California patient guide · Doctors, locations, insurance, billing and forms
Navigate BASS Medical Group Without Calling the Wrong Office
BASS Medical Group is a large California multi-specialty organization offering primary care, surgery, cancer care, imaging and dozens of specialty services. Its physicians work through many separately operated offices, so appointment scheduling, patient forms, records and insurance participation can differ from one provider to another.
This guide brings the important patient instructions into one page. Use it to select the right doctor, confirm new-patient availability, prepare for an appointment, avoid insurance surprises, pay the correct account and contact the department that actually controls your request.
PRIMARY CARE
SPECIALISTS
IMAGING
CANCER CARE
Medical emergency: Do not use the BASS website contact form, billing line or ordinary physician messaging for chest pain, severe breathing difficulty, possible stroke, heavy bleeding, loss of consciousness, poisoning or another potentially life-threatening condition. Call 911 or go to the nearest emergency department.
Important organization detail: BASS Medical Group is not one single clinic building. It is a network of physician practices and medical services. The phone number, form, insurance participation, appointment availability and portal may depend on the individual provider office.
Coverage area
Northern California, the Bay Area and additional California communities.
Medical range
Primary care, surgery, cancer care, imaging and more than 48 specialties.
Scheduling
Appointments are handled by the individual physician office.
Information review
Official information checked August 1, 2026.
Start with the right route
Which BASS Medical Group service solves your problem?
PRIMARY CARE
You need routine or ongoing care
Select family medicine, internal medicine, pediatrics or geriatrics for preventive visits, common health concerns, chronic-condition management and referrals.
Best for: checkups, blood pressure, diabetes follow-up, medication monitoring, vaccines and non-emergency symptoms.
SPECIALTY OR DIAGNOSTIC CARE
You already know the service needed
Search by specialty when you need surgery, gastroenterology, urology, neurology, cancer care, imaging, ENT, podiatry or another focused service.
Confirm: referral, physician order, prior authorization, provider network and exact office address.
URGENT OR EMERGENCY
Your symptoms cannot safely wait
Call the appropriate same-day office for a non-life-threatening problem. Use 911 or the nearest emergency department for serious or rapidly worsening symptoms.
BASS does not operate a dedicated emergency room. Never wait for a website reply during an emergency.
Most efficient sequence: Select the medical specialty, find the provider, open the provider profile, confirm that appointments are being scheduled, call that exact office and verify insurance before choosing a visit date.
Provider search workflow
How to find the right BASS Medical Group doctor
Begin with the medical need
Search by specialty rather than choosing the closest office first. A nearby building may not provide the service, test or procedure you need.
Use the provider directory
Search for a physician by name, specialty or community. Open the complete provider profile rather than relying only on the search-result card.
Read both availability messages
Some profiles show “accepting new patients” while also saying “currently not scheduling patients.” Treat those as separate facts and call the office for the current status.
Check every listed office
A physician may practice at more than one location. Confirm which location offers the required service and where the physician is currently scheduling.
Review languages and affiliations
The profile may identify languages, hospital affiliations, board training, age limitations and clinical focus.
Open the patient-form section
Many profiles contain office-specific new-patient packets, history forms, financial agreements, privacy forms and records-release documents.
Call the direct physician-office number
BASS does not operate one central appointment-scheduling line. Scheduling, cancellations and rescheduling are handled by each practice.
Provider-availability call script
“I am looking for care for [condition or service]. The website lists Dr. [name] as [accepting new patients/currently not scheduling]. Is the doctor scheduling new patients now? Which office should I use, what is the earliest appointment, and does the doctor accept my exact insurance plan?”
California offices
How to choose the correct BASS Medical Group location
BASS locations extend across Northern California, the Bay Area, parts of the Central Valley and additional California communities. The directory includes offices in communities such as Antioch, Berkeley, Brentwood, Campbell, Danville, Pleasanton, San Francisco, San Ramon, Walnut Creek and other areas.
Confirm the specialty shown beside the address
Confirm the physician actually practices at that office
Check the street number, suite and city
Ask whether the visit is office-based or hospital-based
Verify parking and building-entry instructions
Ask whether imaging, lab work or treatment occurs elsewhere
Confirm the office phone instead of using a general number
Check the appointment date and arrival time before traveling
Bay Area travel tip: A BASS surgeon’s consultation office, hospital procedure site and follow-up office may be in different cities. Save each address separately and ask where you must report on the actual procedure day.
Office-specific scheduling
How to schedule, cancel or change a BASS appointment
There is no central BASS appointment line. The general contact form can help route a patient, but appointments, cancellations and changes are handled by the individual physician office.
Locate the provider profile
Confirm the specialty, city, office address, phone number and current scheduling message.
Call the direct office
State whether you are a new or established patient and describe the service you need in one clear sentence.
Give the complete insurance name
Read the full plan, network or medical-group name from the card. Do not provide only the insurer brand.
Ask about referral and authorization
Confirm whether the office needs a primary-care referral, medical-group authorization, physician order or previous test results.
Confirm the exact facility
Record the building, suite, parking location and whether the appointment is an office visit, test, infusion or procedure.
Ask for cancellation rules
Provider offices may have different notice requirements or missed-appointment policies. Do not assume one rule applies across the whole network.
Complete appointment script
“I am a [new/existing] patient seeking [type of visit]. My insurance is [full plan and network]. Is this provider scheduling patients now? Do I need a referral or authorization? Which records or imaging should I send, what amount may be due, and what is the cancellation deadline?”
Prevent first-visit delays
What a new BASS Medical Group patient should prepare
Government-issued photo identification
Primary and secondary insurance cards
Referral or authorization number when required
Medication list with strength and frequency
Drug, food and material allergy list
Relevant laboratory and imaging results
Prior surgery and hospitalization history
Name and contact of your primary-care doctor
Preferred pharmacy name and location
Completed office-specific patient forms
Forms commonly found on provider profiles
New-patient packet
Registration, demographic, insurance, medical-history and contact information.
Financial agreement
Patient responsibility, insurance filing, payment and office billing terms.
Privacy and communication forms
HIPAA acknowledgement and consent for email or text communication.
Medical-record release
Authorization to obtain outside records or send BASS records to another recipient.
Specialty questionnaire
Condition-specific history such as neurology, gastroenterology or surgical symptoms.
Procedure instructions
Preparation details for colonoscopy, surgery, imaging or another scheduled service.
Practical shortcut: Download forms from the exact provider profile rather than using a packet from another BASS office. Independent practices may use different forms and submission instructions.
More than 48 specialties
Major BASS Medical Group services explained
Service, common use and appointment preparation
| Service |
What it may cover |
What to confirm first |
| Primary care |
Preventive visits, common illnesses, chronic conditions, medication management and referrals. |
New-patient availability, age range and exact insurance network. |
| General and specialty surgery |
Evaluation and surgical treatment across general, vascular, breast, colorectal, bariatric and other fields. |
Consultation requirements, hospital site, authorization and surgeon participation. |
| Gastroenterology |
Digestive symptoms, diagnostic testing, colonoscopy and management of gastrointestinal conditions. |
Age limit, referral, procedure preparation and facility network. |
| Neurology |
Headache, seizures, memory concerns, nerve disorders, movement problems and other neurologic conditions. |
Previous imaging, records, referral and current scheduling status. |
| ENT and audiology |
Ear, nose, throat, hearing, sinus, voice and related head-and-neck concerns. |
Whether hearing testing and physician evaluation occur at the same office. |
| Urology |
Urinary conditions, kidney stones, prostate concerns and male or female urologic care. |
Prior tests, imaging, referral and whether a full bladder or urine sample is needed. |
| Podiatry and foot surgery |
Foot pain, wounds, deformity, sports injuries and surgical conditions. |
Relevant imaging, footwear, diabetes history and network participation. |
| Cancer care |
Medical oncology, hematology, radiation oncology, infusion and coordinated cancer services. |
Diagnosis records, pathology, imaging, authorization and treatment-site details. |
| Diagnostic imaging |
Imaging studies ordered to evaluate or monitor a medical condition. |
Written order, authorization, preparation, contrast use and expected cost. |
| Urgent-care clinicians |
Prompt evaluation of selected non-life-threatening illnesses and injuries, depending on availability. |
Location, hours, walk-in status, age eligibility and symptoms accepted. |
Choose the right level of care
Primary care, BASS urgent care or an emergency room?
Primary-care office
- Annual and preventive visits
- Mild or ongoing symptoms
- Chronic-condition follow-up
- Medication management
- Specialist referrals
Urgent or same-day care
- Minor injuries
- Sprains or possible simple fractures
- Mild infections
- Short-term non-emergency illness
- Symptoms that cannot wait for a routine appointment
911 or emergency department
- Chest pain
- Severe breathing difficulty
- Possible stroke
- Heavy bleeding
- Loss of consciousness or major trauma
Website inconsistency to handle carefully: BASS publishes an urgent-care specialty page with clinicians in Danville, while another BASS care-setting guide says the organization offers primary and specialty care rather than general urgent-care services. Call ahead and confirm that the specific Danville office is providing urgent visits before traveling.
BASS does not operate a dedicated emergency room. Some BASS clinicians may work with hospitals, but a physician directory listing is not a substitute for going directly to an emergency department during a serious event.
Avoid coverage surprises
How BASS Medical Group insurance participation works
BASS is contracted with many commercial carriers and participates in Medicare. However, every provider can have different plan participation. Coverage can depend on the insurer, product, network, employer group, medical group, physician, location and service.
Commercial carriers commonly listed
- Anthem Blue Cross
- Blue Shield of California
- Cigna
- Health Net
- TRICARE
- UnitedHealthcare
Other coverage categories
- Medicare
- Commercial PPO products
- Medical-group or HMO arrangements
- Employer-specific networks
What a logo does not prove
- Your specific plan is accepted
- The physician is in network
- The procedure site is in network
- Authorization is complete
Read the complete plan name
Use the network, product or medical-group wording printed on the insurance card.
Call the physician office
Ask whether the specific doctor and location accept that exact plan.
Call the insurer
Use the member-services number on the card and verify the provider using name, address and National Provider Identifier when available.
Verify the service separately
An office visit may be covered while imaging, surgery, anesthesia, pathology, infusion or facility fees follow different network rules.
Obtain authorization evidence
Record the authorization number, approved service, facility, date range and representative name.
Insurance-verification script
“My plan is [complete plan and network name]. I am seeing [provider] at [exact address] for [visit, test or procedure]. Is the physician in network? Is the facility in network? Do I need a referral or authorization, and what copay, deductible or coinsurance may apply?”
Statement troubleshooting
How to understand a BASS Medical Group bill before paying
Patient name matches the person who received care
Service date matches an appointment or procedure
Provider name matches the treating clinician
Insurance shown is the correct active plan
Insurer payment and contractual adjustment appear
Patient balance matches the explanation of benefits
Account number matches the statement being paid
A separate hospital or laboratory bill is not being confused with BASS
BASS billing contacts published for different account groups
| Billing group |
Phone |
When to use it |
| Main billing department |
925-627-3424 |
General BASS physician billing questions. |
| Spanish billing assistance |
925-627-3424 ext. 2138 |
Spanish-language billing help. |
| Pleasanton or Visalia |
925-378-4508 |
Statements assigned to the Pleasanton or Visalia billing group. |
| San Francisco |
925-329-4017 |
Statements assigned to the San Francisco billing group. |
Published billing hours differ across BASS pages. The dedicated billing page lists Monday through Thursday from 8 a.m. to 5 p.m. and Friday from 8 a.m. to 3 p.m. The general contact page presents broader weekday hours. For billing, use the dedicated department schedule and call earlier in the day.
When lines are busy: BASS asks patients to leave their name, account number and callback number. Its billing page says a representative will return the call and asks patients to wait 24–48 hours before calling again.
Billing correction script
“I am calling about account [number] for service date [date]. My statement shows [amount], while my insurance explanation of benefits shows [status or amount]. Please explain the charge, payment, adjustment and remaining responsibility, and tell me whether the claim needs correction or reprocessing.”
Correct online payment workflow
How to pay a BASS Medical Group statement online
Use the official BASS payment page
Do not pay from a search advertisement, text-message link or unfamiliar collection page without confirming the statement.
Use a desktop or laptop when possible
BASS states that mobile devices may cause issues with form submission, payment processing or receipt delivery.
Allow pop-ups
Disable the browser’s pop-up blocker for the official payment page before beginning.
Enter the patient’s full name
Use the first and last name connected to the billing account.
Copy the account number exactly
The account number is needed to apply payment to the correct balance. Do not substitute an insurance member number or medical-record number.
Submit only after reviewing the amount
Compare the payment amount with the current statement and any recent insurance adjustment.
Wait for processing
BASS states that processing and receipt delivery can take approximately two to three hours.
Save the receipt
Keep the emailed receipt, payment date, amount and account number until the payment appears on the account.
Wrong account number risk: BASS warns that incomplete or inaccurate information may delay the payment or cause it not to be applied to the correct account.
Chart access workflow
How to request BASS Medical Group medical records
The public BASS website does not present one central records department for every physician office. Provider profiles commonly include a Release of Medical Records form, indicating that requests are generally routed through the office that maintains the chart.
Identify the record owner
Determine which BASS physician or office created the visit note, result, procedure report or imaging order.
Open the provider profile
Look for “Release of Medical Records,” “Medical Records Release Form” or similar wording.
Enter complete patient information
Use the patient’s legal name, date of birth, address, telephone number and other identifiers requested by the form.
Choose the exact records
State the date range and whether you need visit notes, laboratory results, imaging reports, procedure records, billing records or the complete chart.
Name the recipient clearly
Include the receiving person or organization, address, fax or secure delivery details.
Sign and date the authorization
A parent, guardian or legal representative may need proof of authority.
Submit using the office’s method
Obtain the correct fax, mailing address or secure process directly from the provider office.
Save proof of submission
Keep the completed form, fax confirmation, mailing receipt or secure-message confirmation.
Medical-record request script
“I need records from Dr. [name] for dates [range] sent to [recipient]. Which authorization form should I use, where should I submit it, is identification required, is there a copy fee, and how long should I allow before following up?”
Faster request tip: Ask only for the records actually needed. A specialist may need the latest notes, imaging reports and laboratory results rather than an entire multi-year chart.
Portal safety
How to identify the correct BASS patient portal
The public BASS website does not display one clearly identified universal portal for every physician practice. Because BASS physicians may use office-specific systems, use only a portal invitation or link supplied by your treating office.
You received a portal invitation
Confirm that the physician name, practice name and contact information match your appointment before creating the account.
A search result shows a portal
Do not enter medical or financial information until the treating office confirms that it is the correct portal.
You forgot your password
Use the portal’s official recovery option. Ask the office to confirm the email or mobile number connected to the account.
A result is missing
Contact the ordering office to ask whether the result is complete, reviewed and released.
You need records for another doctor
Use the formal records-release process when the portal does not contain the complete chart.
You need urgent medical help
Do not wait for a portal reply. Call the office or seek emergency care based on symptom severity.
Privacy rule: Never send a Social Security number, insurance card, detailed history or medical-record number through the general BASS contact form.
Diagnostic services
How to prepare for BASS Medical Group imaging
Bring photo identification and insurance cards
Bring the physician order when instructed
Ask whether fasting is required
Report pregnancy or possible pregnancy
Report implants, devices or metal when relevant
Ask whether kidney-function testing is needed before contrast
Confirm how results reach the ordering doctor
Ask when to call if results are not received
Authorization tip: “The order was sent” does not necessarily mean insurance authorization is complete. Confirm both before traveling.
Specialized centers
BASS cancer and breast-health contact preparation
Information to have ready when calling
Diagnosis or reason for referral
Referring physician name and phone
Pathology report date and facility
Recent imaging type and location
Current medications and allergies
Complete insurance and medical-group details
Authorization or referral number
Preferred appointment location and travel limits
Care-coordination tip: Ask which office is collecting pathology, imaging discs and outside oncology records. Sending every document to an unrelated central number can delay review.
Local patient shortcuts
Practical BASS Medical Group tips for California patients
01
Call the exact practice
The central contact form cannot schedule, cancel or reschedule your appointment.
02
Read conflicting availability carefully
“Accepting new patients” does not always mean appointment slots are currently open.
03
Verify all billing entities
Surgery may generate physician, facility, anesthesia, laboratory or pathology charges.
04
Save the suite number
Bay Area medical campuses may contain several unrelated offices in one building.
05
Check traffic before travel
Allow extra time when traveling between Contra Costa, Alameda, San Francisco or Santa Clara County offices.
06
Use a laptop for payments
BASS recommends a desktop or laptop to reduce payment and receipt problems.
07
Match the account number
A payment can be delayed or misapplied when the statement number is entered incorrectly.
08
Download provider-specific forms
Do not assume one BASS office’s packet is accepted by another practice.
09
Do not send PHI in the general form
Use the secure process supplied by the treating office for sensitive information.
No-result troubleshooting
What to do when you cannot find the doctor, form or appointment
The doctor does not appear by name
Search by specialty and city. The provider may be listed under a middle initial, full legal name or affiliated practice.
The profile says accepting but not scheduling
Call the office and ask about a waitlist, another location or another physician in the same specialty.
The correct form is missing
Ask the direct office to send the current packet rather than downloading a form from another practice.
The office has no referral
Contact the referring office and confirm the destination fax, provider name and authorization number.
Insurance says the doctor is out of network
Verify the exact office address and billing entity. The same physician may have different participation at another site.
A payment receipt has not arrived
Allow the stated two-to-three-hour processing period, check spam folders and then contact billing with the account and transaction details.
The online payment is not reflected
Compare the entered account number with the statement and provide the receipt to billing.
You need urgent clinical advice
Call the treating office. Use emergency services when symptoms are serious or rapidly worsening.
Ten patient questions
BASS Medical Group frequently asked questions
What is BASS Medical Group?
BASS is a California multi-specialty physician organization offering primary care, surgery, cancer care, imaging and numerous specialty services through a network of physician practices.
How do I schedule a BASS appointment?
Find the physician or location and call that office directly. The general BASS contact form does not schedule, cancel or reschedule appointments.
Does BASS accept new patients?
Availability varies by physician. Read the complete profile and call because a provider may be accepting new patients but not currently opening appointment slots.
Does BASS Medical Group have urgent care?
BASS lists urgent-care clinicians in Danville, but service availability should be confirmed before travel. BASS does not operate a dedicated emergency room.
Which insurance plans does BASS accept?
BASS lists many commercial carriers and participates in Medicare. Participation varies by physician, product, network, employer group and location.
What is the main BASS billing number?
The main billing line is 925-627-3424. Spanish assistance is available at extension 2138.
How do I pay a bill online?
Use the official payment page, allow pop-ups and enter the patient’s full name and exact account number from the statement. A desktop or laptop is recommended.
How long does an online payment receipt take?
BASS states that processing and delivery of the receipt may take approximately two to three hours.
How do I request BASS medical records?
Contact the physician office that maintains the chart. Many provider profiles include an office-specific Release of Medical Records form.
Does BASS have one patient portal?
The public website does not clearly identify one universal portal for every office. Use only the portal invitation or link confirmed by your treating practice.
Final live actions
Official BASS Medical Group tools
The important procedures and warnings are explained above. Use the official website when you are ready to complete a live doctor search, office lookup, insurance check, payment or contact submission.
