Centennial Medical Group 2026: Doctors, Services, Urgent Care & Patient Guide

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Columbia, Maryland patient guide · Reviewed July 23, 2026

Plan Primary Care, Urgent Care and Patient Tasks Without Missing a Step

Centennial Medical Group is a Howard County medical practice offering primary care and several outpatient services from its Columbia network. The practice also works with FirstCall Medical Center for walk-in urgent care.

This guide brings the useful information into one place: office hours, appointments, new-patient forms, portal activation, current insurance names, billing rules, refill timing, physical therapy locations and the fees patients most often discover too late.

Request an appointment Open patient portal Choose the right care
Call 911 for a medical emergency. Do not wait for an office message or use walk-in care for chest pain, severe breathing difficulty, possible stroke, loss of consciousness, uncontrolled bleeding, a major injury or another potentially life-threatening condition.
Main clinical location

6250 Old Dobbin Lane, Columbia, MD 21045.

Primary care hours

Monday-Friday, 8:00 a.m.-4:30 p.m.

Main telephone

410-730-3399

Billing department

410-432-1011

New-patient forms fax

443-698-8298

Start here

Which Centennial Medical Group care path fits your problem?

PRIMARY CARE Routine or ongoing healthcare

Schedule primary care for preventive visits, chronic-condition management, medication follow-up, health screenings and problems that do not require emergency treatment.

Best for: annual exams, diabetes, blood pressure, cholesterol, ongoing symptoms, referrals and long-term medication management.
FIRSTCALL WALK-IN CARE Same-day non-emergency concern

The practice directs walk-in urgent-care patients to participating FirstCall locations. The urgent-care service treats acute illness, minor burns, cuts, strains, sprains and other non-life-threatening concerns.

Best for: a problem that needs prompt outpatient care but is not likely to threaten life or permanent function.
911 OR EMERGENCY DEPARTMENT Serious or rapidly worsening symptoms

Emergency care is the correct choice when delay could cause death, major disability or permanent injury.

Use emergency care for: chest pain, severe breathing trouble, stroke signs, major trauma, uncontrolled bleeding or loss of consciousness.
Simple decision rule: Use primary care when the problem can be planned, walk-in urgent care when it needs same-day outpatient attention, and 911 or an emergency department when the condition may be life-threatening.

Go directly to your patient task

The practical rules are explained below. Use an external portal only when the final live request, login, payment or submission must be completed there.

Before driving

Centennial Medical Group address, hours and building check

Main patient location
6250 Old Dobbin Lane
Columbia, MD 21045
410-730-3399

Published primary care hours: Monday-Friday, 8:00 a.m.-4:30 p.m.

Corporate address shown on patient forms
6230 Old Dobbin Lane, Suite 230
Columbia, MD 21045

This address appears on the practice’s patient registration packet. It may not be the location of your clinical appointment.

Do not rely on the organization name alone. Use the exact street number, suite, provider and service shown in your appointment confirmation. The clinical website and registration packet display different Old Dobbin addresses for different practice functions.

Weather and closure rule

The practice evaluates road conditions and parking-lot icing before changing hours during bad weather. Call the office before leaving home when snow, ice or a major storm may affect Columbia.

Local arrival tip: Lab work, a physician visit, physical therapy and a specialty service may use different check-in areas or locations. Ask for the building, floor and suite when scheduling.
Scheduling workflow

How to request a Centennial Medical Group appointment

Identify the service Decide whether you need primary care, family care, urgent care, physical therapy, allergy testing, weight management, occupational health or an immigration exam.
Call, email or use the request form Call 410-730-3399, email appointments@centennialmedical.com or use the appointment-request page.
Include a working telephone number The official request page specifically asks patients to include their phone number so the office can complete scheduling.
State whether you are a new patient New patients need extra registration time and should complete forms before the visit.
Give the complete insurance name State the insurer, product and network printed on the card. “CareFirst” or “UnitedHealthcare” alone may not identify the exact network.
Ask about referral and authorization Confirm whether your HMO, test, therapy or requested service needs a referral or prior authorization.
Confirm the exact location Save the address, building, suite, provider, arrival time and direct telephone number.
Cancel at least 24 hours ahead The published registration packet says a missed appointment without at least 24 hours’ notice may result in a $50 charge.
Appointment call script
“I need an appointment for [reason]. I am a [new/existing] patient. My insurance is [complete plan and network]. Please confirm the provider, exact address and suite, arrival time, referral requirements, forms needed and the amount expected at check-in.”
Open appointment instructions Call 410-730-3399
First visit

New-patient forms and what to bring

Centennial Medical Group asks new patients to complete a registration form and medical-history questionnaire before the first visit. English and Spanish versions are published.

Completed patient registration form
Completed medical-history questionnaire
Government-issued photo identification
Current primary and secondary insurance cards
Medication list with dose and frequency
Allergy and reaction list
Preferred pharmacy name, location and phone
Prior records or signed records-release form
Referral or authorization when required
Payment method for copay or deductible
Arrival rule: Bring the completed forms, photo ID and insurance card at least 15 minutes before the appointment.
Send forms before the visit

Fax: 443-698-8298

Email: appointments@centennialmedical.com

Information the packet requests

Demographics, emergency contact, insurance, pharmacy, other physicians, communication permissions, privacy acknowledgement and financial-policy agreement.

Privacy tip: Verify the destination before emailing forms containing personal or medical information. Ask the office whether a secure upload or portal option is available.
Download official patient forms
Online account

How to activate and use the Centennial Medical Group patient portal

Find the invitation email The portal invitation is sent to the email address you gave the practice. Check spam or junk folders before requesting another invitation.
Open the invitation link Confirm that the portal opens through YourHealthFile before entering personal information.
Enter the patient’s date of birth Use the date of birth associated with the practice record and select Activate Account.
Create account credentials Choose a memorable username, strong password, security question and answer.
Complete each registration screen Use the Previous and Next buttons, update incorrect information and select Save Information at the bottom of each updated page.
Sign at the end Centennial’s instructions state that the patient must sign the completed registration before the medical record can be viewed.

What the portal may help you do

P
Profile and forms

Review account information and complete available forms.

C
Clinical summaries

Review available health-record summaries and recent visit information.

Rx
Medications

Review medicines recorded in the chart and request routine refills.

A
Allergies

Review recorded allergies and alert the office when information is incomplete.

L
Lab results

View results released to the online account.

M
Secure messages

Send non-emergency questions to the practice.

Do not use a portal message for an emergency. Portal messages may not be read immediately. Call the office for time-sensitive concerns and call 911 for emergency symptoms.
Open YourHealthFile portal Read activation instructions
Doctors and outpatient care

Centennial Medical Group providers and services

The current online directory lists primary-care and urgent-care clinicians. Availability, age limits and new-patient status can differ by provider.

Current primary-care directory
  • Dr. David Luebbert
  • Dr. Bisma Zulfiqar
  • Rena Marie Johnson, MD, MPH, ABFM
  • Dr. Rajiv Dua
  • Dr. Joseph F. Gibbons
Additional names currently listed
  • Dr. Arvind Narasimhan
  • Dr. Jacinth Brooks
  • Other FirstCall and practice clinicians may be scheduled by location
Before choosing a clinician
  • Confirm age range
  • Confirm current location
  • Confirm new-patient status
  • Verify exact insurance network
Published examples: Dr. Rajiv Dua’s page says he sees patients age five and older. Dr. Joseph Gibbons’ page says his practice is limited to patients age 15 and older. Confirm age rules when scheduling.
Services available through Centennial Medical Group and related locations
Service What it may include What to confirm first
Primary and family care Preventive exams, chronic-condition care, illness visits, screenings, medication management and referrals. Provider age range, location, new-patient status and insurance network.
Walk-in urgent care Acute illness, minor injuries, burns, cuts, strains, sprains and selected on-site testing. Live FirstCall location, hours, insurance and whether emergency care is safer.
Laboratory and testing Blood work, selected rapid testing, cardiac testing and diagnostic services ordered by a clinician. Fasting, medication instructions, order, network and result process.
Preventive services Physicals, vaccinations, health screenings, bone-density scanning and wellness care. Whether the service is preventive, diagnostic or third-party required.
Physical therapy Orthopedic, postsurgical, balance, vestibular, sports, accident and pain-related rehabilitation. Referral, authorization, visit limit, copay and correct therapy location.
Occupational health Work-related exams, testing and services requested by an employer or regulatory program. Employer forms, payment responsibility and required testing.
I-693 immigration exam Medical-history review, physical examination, required disease screening and vaccination assessment by an authorized civil surgeon. Civil-surgeon availability, current USCIS form edition, records, laboratory work and total self-pay cost.
Check the live provider directory
Same-day outpatient care

How Centennial Medical Group and FirstCall urgent care work together

Centennial Medical Group’s urgent-care information directs patients to FirstCall Medical Center for walk-in treatment. The appointments page says no advance appointment is needed for urgent care at participating FirstCall locations.

Common illnesses

Respiratory symptoms, sore throat, ear complaints, urinary symptoms, vomiting, fever and other acute outpatient conditions.

Minor injuries

Strains, sprains, cuts, minor burns, joint or muscle injuries and selected suspected fractures.

Testing and prevention

Selected blood work, rapid tests, X-ray, physicals, screenings, vaccines and occupational-health services.

Published extended hours: Centennial’s urgent-care page states Monday-Friday from 8:00 a.m. to 8:00 p.m. and weekends from 8:00 a.m. to 5:00 p.m. These hours may apply to participating FirstCall operations rather than every Centennial service. Confirm the selected location before traveling.

Urgent care is not emergency care

Mild-to-moderate illness or minor injury Walk-in urgent care may be appropriate when the patient is stable and the concern is not life-threatening.
Possible heart attack or stroke Call 911. Do not drive past an emergency department to reach a clinic.
Major fracture, severe burn or deep wound Use emergency care when there is deformity, uncontrolled bleeding, loss of function or a serious mechanism of injury.
Symptoms are rapidly worsening Seek emergency evaluation rather than waiting for an outpatient appointment.
Check urgent-care information
Coverage check

Insurance currently listed by Centennial Medical Group

Commercial plans
  • Aetna HMO and PPO
  • BlueCross BlueShield
  • BCBS Federal Employee Program
  • CareFirst and CareFirst BlueChoice
  • Cigna
  • Coventry
  • Humana
Government and employer plans
  • Medicare
  • Railroad Medicare
  • Tricare
  • Johns Hopkins Employee Health Plan
  • Kaiser
  • Bravo Health
United and other products
  • UnitedHealthcare
  • UnitedHealthcare MDIPA
  • UnitedHealthcare Optimum Choice
  • Wellpoint
A company name is not a coverage guarantee. Confirm the exact plan, network, provider, location and service with both the office and insurer. Eligibility verification does not guarantee that the insurer will pay.

HMO and referral rules

You have an HMO Centennial states that HMO patients must designate the practice as their primary care provider.
Your plan requires a referral The patient registration agreement makes the patient responsible for obtaining the referral before the visit.
The referral is missing A denied claim caused by a missing referral may become the patient’s full financial responsibility.
Your insurance recently changed Notify the office immediately. Delayed updates can cause filing-limit denials and leave the balance with the patient.
Insurance-verification script
“My plan is [complete product and network]. I am seeing [provider] at [exact address] for [service]. Is the provider and location in network? Do I need to select Centennial as my PCP, obtain a referral or receive prior authorization? What copay, deductible or coinsurance should I expect?”
Check the current insurance list Verify with the office
Costs and policies

Centennial Medical Group billing, payment and patient fees

Published payment and fee rules patients should know
Item Published rule How to avoid a surprise
Payment at visit Copay, unmet deductible, coinsurance and non-covered charges are expected at the time of service. Ask for an estimate and bring an accepted payment method.
Accepted payment methods Cash, check, Visa, Mastercard, Discover and American Express are listed. Confirm the amount expected before check-in.
No-show fee $50 when an appointment is missed without at least 24 hours’ notice. Cancel or reschedule as early as possible and keep confirmation.
Form-completion fee The financial page says up to $40; the registration packet lists a $40 charge and 24-hour turnaround, except a DOT physical form. Ask about the fee and required appointment before submitting the form.
Returned check $50 service charge. Confirm available funds or use another approved payment method.
Third-party physical School, camp, work, DOT, sport and similar required physicals are described as non-covered and payable at service. Ask for the self-pay price and required paperwork before arrival.
Medical-record transfer A transfer fee may apply when records are sent to another primary care physician. Ask the records staff for the current fee before authorizing delivery.
Payment plan Payment plans may be considered for large balances. Contact billing before the balance becomes delinquent.

Why a preventive visit can still produce a charge

The registration agreement explains that additional screening, counseling, telephone consultation or evaluation of a new or significant medical problem may be billed separately from the preventive service. That additional work can create a copay or coinsurance amount.

Insurance-payment timing: Centennial’s financial policy says the patient may become responsible when the insurer has not paid within 60 days of service. Contact the insurer and billing office before paying a balance that appears to involve an unprocessed or incorrectly filed claim.
Billing-question script
“I am calling about the charge for service date [date]. Please explain the billed service, insurance payment, contractual adjustment and patient balance. Does the claim need corrected information, a referral, authorization or reprocessing before I pay?”
Billing department

410-432-1011

Use for bill questions, insurance updates and payment-plan requests.

Online payment

Check the patient name, service date and account before submitting money.

Open official payment page
After the visit

Prescription refills, test results and referral follow-up

Published refill timing: The patient registration packet gives prescription requests a 48-to-72-hour turnaround. Submit routine requests before the medicine runs out.
Contact your pharmacy first The practice asks patients to have the pharmacy send the refill request to the prescribing clinician.
Use the portal when appropriate Include the medicine name, strength, directions and correct pharmacy.
Allow 48 to 72 hours Weekends, holidays, required appointments, monitoring tests and prior authorization may extend the process.
Check whether follow-up is overdue A clinician may need an appointment, blood pressure reading, laboratory work or medication review before renewing treatment.
The pharmacy has no prescription Confirm the correct pharmacy branch and ask whether the request reached the office.
A result is missing from the portal Ask the ordering office whether the test is complete, under review or not configured for portal release.
An abnormal result appears Do not diagnose yourself from a flag. Ask the ordering clinician what the result means in your clinical situation.
A specialist has not called Confirm that the referral was sent, identify the receiving office and check insurance authorization.
Records and privacy

How to transfer records and control communication permissions

Bring records into Centennial Medical Group

The new-patient page provides a Medical Record Release of Information Authorization to Centennial Medical Group. Complete the form for the doctor or organization currently holding the records and identify Centennial as the receiving practice.

Patient’s complete legal name and date of birth
Previous provider or facility name
Specific records and date range needed
Centennial destination information
Patient or authorized representative signature
Supporting guardianship or representative document when applicable

Send records to another practice

Centennial’s financial policy says a fee may apply when records are transferred to another primary care doctor. Ask the office for the current amount, delivery method and estimated processing time.

Allow another person to communicate for you

The registration packet includes an authorization that can allow named individuals to make or cancel appointments, request or discuss medical information, discuss financial matters, or deliver and collect information.

Choose access carefully. The form allows full access or selected permissions. Name only trusted people and choose an end date when indefinite access is unnecessary.

CRISP health-information exchange

The registration packet says Centennial participates in CRISP, the regional health-information exchange serving Maryland and Washington, D.C. It lists 1-877-952-7477 for patients who want information about opting out.

Important limitation: The packet states that public-health reporting and Maryland Prescription Drug Monitoring Program information remain available to providers even after a general CRISP opt-out.
Open records and registration forms
Rehabilitation locations

Centennial Medical Group physical therapy locations and schedules

Centennial Physical Therapy lists treatment for orthopedic injuries, postsurgical recovery, sports injuries, back and neck pain, balance disorders, vestibular problems, neurological concerns, arthritis, fall prevention, chronic pain and accident-related rehabilitation.

Published physical therapy locations and hours
Location Address Published hours Contact
Columbia Crossing 6250 Old Dobbin Lane, Columbia, MD 21045 Mon & Wed: 7:00 a.m.-6:30 p.m.; Tue & Thu: 10:00 a.m.-6:30 p.m.; Fri: 7:00 a.m.-5:30 p.m. 443-698-8664
Maple Lawn 10981 Johns Hopkins Road, Laurel, MD 20723 Mon, Wed & Fri: 7:00 a.m.-1:00 p.m.; Tue & Thu: 8:00 a.m.-7:00 p.m. 443-698-8664
Ellicott City 10120 Baltimore National Pike, Ellicott City, MD 21042 Mon, Wed & Fri: 7:00 a.m.-3:00 p.m.; Tue & Thu: noon-8:00 p.m. 443-698-8664
Physical therapy email

PhysicalTherapy@CentennialMedical.com

Before the first session

Confirm referral, authorization, visit limit, copay, injury paperwork and whether the selected location treats your condition.

Balance warning from the patient agreement: Frequent therapy visits can make an unpaid balance grow quickly. Discuss cost-sharing and a payment plan early.
Check current therapy schedules
Services beyond routine primary care

Immigration exams, preventive testing and other services

I-693 immigration exams

The practice advertises immigration medical examinations by authorized civil surgeons, including history review, physical examination, communicable-disease screening and vaccination assessment.

Preventive and diagnostic care

Published services include cardiac testing, bone-density screening, blood work, injections, IV therapy and therapeutic phlebotomy when clinically ordered.

Additional programs

The practice lists allergy testing, medical weight loss, occupational health, work physicals and selected travel or vaccine services.

I-693 preparation checklist

Government-issued identity document
Current USCIS instructions and form edition
Complete vaccination records
Prior tuberculosis or disease-test records
Medication and medical-history list
Interpreter plan when needed
Total cost and payment-method confirmation
Follow-up plan for missing vaccines or tests
Do not rely on an old validity statement. Immigration medical requirements and Form I-693 filing rules can change. Confirm the current USCIS edition, submission rule and civil-surgeon status before paying for the exam.

Centennial directs immigration-exam questions to immigration@firstcallmedicalcenter.com.

Ask about Centennial I-693 exams Check current USCIS instructions
Fix common problems

Centennial Medical Group patient problem solver

You did not receive a portal invitation Check spam, confirm the email address on your patient record and ask the office to resend the invitation.
Your portal registration will not finish Review every page, save changes and make sure you completed the final signature.
The insurer says Centennial is out of network Confirm the exact provider, tax entity, service address and product—not only the practice name.
Your claim was denied for no referral Ask the insurer whether a retroactive referral is permitted, then contact the referring office and Centennial billing.
Your prescription is almost finished Do not wait until the final dose. The published refill window is 48 to 72 hours.
Your form is needed tomorrow The published turnaround is 24 hours, but clinical review may take longer. Ask before making a deadline promise.
You arrived at 6230 instead of 6250 Check your confirmation. The form packet lists a corporate address while the practice website lists the primary patient location at 6250.
Snow or ice is expected Call before driving. The practice may adjust hours after evaluating roads and parking conditions.
You need hospital admission The practice states that its physicians use Howard County General Hospital when admission is necessary.
Your therapy balance is increasing Ask billing about insurance processing and a payment plan before several additional visits occur.
Local patient shortcuts

Practical Columbia tips that can prevent repeat calls

01
Save two phone numbers

Use 410-730-3399 for the practice and 410-432-1011 for billing.

02
Confirm the street number

6250 is the published main patient location; 6230 appears as the corporate address on the registration packet.

03
Arrive 15 minutes early

New patients should not use the scheduled appointment time as the check-in time.

04
Start refills early

The official packet gives the process 48 to 72 hours.

05
Ask about form charges

A $40 documentation charge may apply even when the form is handed over during a visit.

06
Verify HMO designation

Make sure Centennial appears as the PCP before the appointment.

07
Use the correct urgent-care brand

Same-day walk-in services may appear under FirstCall rather than only under the Centennial name.

08
Check therapy location

Columbia, Maple Lawn and Ellicott City have different schedules.

09
Keep proof of cancellation

Save the call time, email or portal confirmation when canceling before the 24-hour deadline.

Use the right channel

Centennial Medical Group contact directory

Contact the correct department for faster help
Patient need Contact Best use
Appointments and main office 410-730-3399 Scheduling, location confirmation, medical-office routing and service questions.
Appointment email appointments@centennialmedical.com Non-urgent scheduling requests; include a telephone number.
General non-patient question cmg@centennialmedical.com General practice questions from people not yet established as patients.
Billing 410-432-1011 Statements, insurance updates, payment questions and payment-plan requests.
New-patient forms fax 443-698-8298 Completed registration, medical-history and incoming-record forms.
Physical therapy 443-698-8664 Columbia, Maple Lawn and Ellicott City therapy scheduling.
Established-patient clinical message Patient portal Routine secure messages, refill requests and available record information.
Do not email emergency symptoms or unnecessary sensitive information. Use the patient portal for established-patient communication and call 911 for an emergency.
Main patient location

Map to Centennial Medical Group in Columbia

Centennial Medical Group
6250 Old Dobbin Lane
Columbia, MD 21045
Main telephone: 410-730-3399
Before navigation starts: Compare this address with your appointment confirmation. Physical therapy, urgent care or another service may be scheduled at a different location.
Patient questions answered

Centennial Medical Group frequently asked questions

Where is Centennial Medical Group in Columbia?

The main clinical address is 6250 Old Dobbin Lane, Columbia, MD 21045. Confirm the address and suite because the patient packet also displays a corporate office at 6230 Old Dobbin Lane, Suite 230.

What are the primary care hours?

The published primary care hours are Monday through Friday from 8:00 a.m. to 4:30 p.m. Call for holiday, weather and service-specific changes.

How do I schedule an appointment?

Call 410-730-3399, email appointments@centennialmedical.com or submit the online request. Include a working telephone number.

What should a new patient bring?

Bring completed registration and medical-history forms, photo ID, insurance cards, medication and allergy lists, prior records and any required referral.

How early should a new patient arrive?

The practice asks new patients to arrive at least 15 minutes before the appointment.

How do I access the patient portal?

Use the invitation sent to your registered email address, enter the patient’s date of birth, create account credentials, complete each registration screen and sign at the end.

How much is the missed-appointment fee?

The published registration packet lists a $50 charge when a patient misses an appointment without providing at least 24 hours’ notice.

How long does a refill take?

The published turnaround is 48 to 72 hours. Ask the pharmacy to send the request or use the portal before the medicine runs out.

Does Centennial charge to complete forms?

A fee of up to $40 may apply. The registration packet lists a $40 charge and a 24-hour turnaround, except for the DOT physical form.

Does Centennial Medical Group accept Medicare?

Medicare and Railroad Medicare appear on the published list. Verify the exact provider, location and service before the visit.

Do HMO patients need to choose Centennial as their PCP?

Yes. The insurance page states that HMO patients must designate the practice as their primary care provider.

Does Centennial offer payment plans?

Payment plans may be considered for large balances. Call the billing department at 410-432-1011.

Can I walk in for urgent care?

The appointments page says no advance appointment is required at participating FirstCall walk-in urgent-care locations. Confirm the live location and hours first.

Where is physical therapy offered?

Published locations include Columbia Crossing, Maple Lawn in Laurel and Ellicott City. All use 443-698-8664, but their schedules differ.

Complete the live action

Official Centennial Medical Group patient tools

The rules and preparation steps are explained above. Use the official system below only when you are ready to complete the live appointment, login, payment, provider check or form download.

Request appointment Patient portal Pay bill Provider directory Patient forms Insurance list Billing inquiry Physical therapy
Independent patient-information notice:

USMedicalGroup.org is not Centennial Medical Group, FirstCall Medical Center, an insurer or a government agency. This page does not schedule appointments, process payments, determine insurance benefits or provide medical diagnosis.

Provider availability, hours, locations, fees, insurance participation and office rules can change. Confirm time-sensitive details directly with the practice.

This article is educational and does not replace professional medical advice. Call 911 for a life-threatening emergency.

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