AVORS Medical Group 2026: Doctors, Services, Portal & Locations

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Lancaster + Sylmar, California · Orthopedics, pain, joints and rehabilitation

From Injury to Movement: A Practical AVORS Patient Guide

AVORS Medical Group stands for Antelope Valley Orthopedic & Rehabilitation Specialists. It is a California multispecialty practice focused heavily on bones, joints, muscles, nerves, mobility, orthopedic trauma, pain management and recovery.

Instead of sending you through a collection of provider pages, this guide explains what AVORS treats, which specialist may fit the problem, how to prepare for your first visit, what is inside the new-patient packet, how the patient portal works, how to request records, what to ask before surgery and how to avoid common insurance and scheduling problems.

Request an appointment Open patient portal Choose the right service
Emergency warning: AVORS is an outpatient specialty practice, not a substitute for emergency care. Call 911 or use an emergency department for severe bleeding, loss of consciousness, major breathing difficulty, chest pain, suspected stroke or another potentially life-threatening condition.
Practice name

Antelope Valley Orthopedic & Rehabilitation Specialists.

Serving since

AVORS says the combined practice has operated under its current model since 2007.

Lancaster

661-726-5005

Sylmar

661-705-5100

General hours

Monday-Friday, 8 a.m.-5 p.m.; weekends closed.

Start here

Which AVORS Medical Group service fits your problem?

AVORS combines several musculoskeletal specialties. That can be useful when one problem overlaps more than one area—but it also means choosing the correct service when you call can save time.

ORTHOPEDICS Bone, joint or injury problem

Start with orthopedics for fractures, joint pain, sprains, tendon injuries, arthritis, sports injuries, loss of motion or a condition that may require surgical evaluation.

Common body areas: shoulder, elbow, wrist, hand, hip, knee, ankle and foot.
PM&R / PAIN Pain is limiting daily function

Physical Medicine & Rehabilitation physicians, often called physiatrists, evaluate pain and dysfunction involving nerves, muscles and bones with a goal of improving movement and function.

Useful for: persistent pain, rehabilitation planning, functional limitations and selected interventional pain procedures.
JOINT / SUBSPECIALTY You already know the body area

AVORS has focused services for total joints, hand and upper extremity, foot and ankle, sports medicine, chiropractic care and other musculoskeletal needs.

Tell scheduling the exact body part and whether imaging or a diagnosis already exists.
Fast routing rule: Tell the receptionist the injured body part, how the problem started, whether there was trauma, whether you can bear weight or use the limb, how long symptoms have lasted and whether another doctor already ordered imaging.

Go directly to the patient task you need

The important instructions are explained on this page. Official systems are used mainly for the final action.

Local office guide

AVORS Medical Group Lancaster and Sylmar locations

Lancaster office
42135 10th Street West, Suite 101
Lancaster, CA 93534

Phone: 661-726-5005
Fax: 661-726-5377
Email: info@avorsmedgroup.com

Sylmar office
14124 Foothill Boulevard
Sylmar, CA

Phone: 661-705-5100
Fax: 661-705-5101
Email: info@avorsmedgroup.com

Monday-Friday

Published general hours are 8:00 a.m. to 5:00 p.m.

Saturday-Sunday

Published as closed.

Before driving

Confirm your provider, building, suite and appointment time because specialty schedules can differ.

Local naming tip: Some older AVORS pages still use “Valencia” in headings or telephone instructions even though the current contact information identifies the second physical office as Sylmar. Use the street address provided on your actual appointment confirmation rather than relying on an older page heading.

Lancaster office map

Appointment workflow

How to schedule an AVORS appointment without creating a referral delay

Identify the main body area Say shoulder, elbow, hand, hip, knee, ankle, foot, spine or another specific location rather than simply saying “I have pain.”
Explain how it began Tell scheduling whether this is a recent accident, work injury, sports injury, chronic condition, arthritis, post-surgical problem or gradual pain.
Tell them if another doctor already diagnosed it Give the diagnosis, referring provider and date of the most recent examination.
Mention existing imaging Tell the office if you already have X-rays, CT scans, MRI studies, nerve tests or another relevant study.
Provide your exact insurance plan Read the insurer, product and network information from your card. Do not stop at the insurance-company name.
Ask about referral or authorization requirements Some health plans require authorization before specialty evaluation, imaging, injections, therapy or surgery.
Confirm which AVORS location to use Not every physician or specialty is necessarily available at both offices every day.
Ask what to bring Confirm whether AVORS needs the actual imaging disc, written report, referral, operative notes, previous treatment records or claim information.
Appointment call script
“I need an appointment for my [body part]. The problem started [date/how it happened]. I have already had [X-ray/MRI/treatment] and my insurance is [full plan name]. Which AVORS specialist should I see, which office should I use, do I need a referral or authorization, and which records should I bring?”
Call Lancaster: 661-726-5005 Call Sylmar: 661-705-5100 Use official contact form
First-visit checklist

What to bring to your first AVORS Medical Group appointment

Government-issued photo identification
Current insurance card
Referral or authorization when required
Completed new-patient packet
Current medication list with dose
Medication and material allergies
Previous orthopedic or surgical records
X-ray, CT or MRI reports
Actual imaging disc if requested
Brace, splint or assistive device being used
Workers’ compensation information when applicable
Questions written in priority order

Prepare a short injury timeline

When?

Exact or approximate date the problem started.

How?

Fall, collision, sports movement, lifting, work activity or gradual onset.

What changed?

Pain, weakness, swelling, numbness, clicking, instability or reduced motion.

What helped?

Rest, medication, injection, therapy, brace or another treatment.

Practical orthopedic tip: If you have imaging from another facility, ask AVORS whether the physician needs both the radiology report and the actual images. A report summarizes what was seen; the surgeon may still want to review the images directly.
Paperwork decoded

What is inside the AVORS new-patient packet?

AVORS provides downloadable forms so patients can complete paperwork before arriving. The official instructions ask patients to print the forms on white paper and bring the completed documents to the appointment.

AVORS new-patient paperwork and why each section matters
Form section What it collects What to prepare before filling it out
Patient information Identity, address, contact and demographic details. Legal name, date of birth, current address, telephone and emergency contact.
Insurance information Insurance carrier and coverage details used for billing. Primary and secondary cards plus subscriber information.
Assignment & release Billing and information-release permissions related to treatment and claims. Read the authorization before signing rather than treating it as a routine checkbox.
Arbitration agreement Agreement concerning how certain disputes may be handled. Read the complete provision before signing and ask questions about anything unclear.
Payment policy Patient acknowledgement of financial responsibilities. Know your deductible, copay and coinsurance when possible.
Medical-information release Permission regarding medical-information disclosure. Names of doctors or facilities whose information may be needed.
Privacy acknowledgement Acknowledgement of the Notice of Privacy Practices. Review how health information may be used and disclosed.
Pain / chiropractic agreement Additional terms that may apply to pain-management or chiropractic treatment. Bring a complete medication and treatment history.
Health-history questionnaire Past diagnoses, surgery, symptoms, medications and relevant health history. Write a medication list and previous surgery dates before starting.
Work/DMV physical paperwork: AVORS also publishes a separate work-physical packet containing patient information, a pre-participation medical history and work/DMV physical evaluation information.
Need help with forms? AVORS lists the Lancaster reception number as 661-726-5005, extension 100. Call before your appointment if you are unsure which packet applies.
Download official patient forms
Patient portal

How to reach the correct AVORS Medical Group patient portal

AVORS links its website to an AdvancedMD patient portal. This is an important identity check because searching the web for “AVORS portal” can expose patients to unrelated login pages.

Start from the AVORS website when possible The official site displays a “Register for Patient Portal” link that routes patients to AdvancedMD.
Check the portal address before entering information AVORS’s official link points to the AdvancedMD patient-portal domain.
Use your own patient credentials Do not share a family member’s login or save credentials on a public computer.
Use the office for access problems If registration details do not match or an invitation is missing, call AVORS rather than repeatedly creating accounts.
Do not send emergency symptoms through a portal message. A portal is not a real-time emergency response system.
Open AVORS-linked AdvancedMD portal
Services in one place

AVORS Medical Group specialties and what each one is for

Specialty routing guide
Service Typical reason to use it Useful question before scheduling
Orthopedics Fractures, joint pain, sprains, tendon injuries, arthritis and other musculoskeletal disorders. Which orthopedic specialist treats my exact body area?
Orthopedic trauma More complex fractures and traumatic injuries. Should outside emergency imaging be sent before the appointment?
Total joint replacement Severely damaged or painful hip, knee, shoulder or selected other joints. What nonsurgical options should be exhausted first?
Pain management / PM&R Pain, nerve-muscle-bone dysfunction and impaired function. Do I need recent imaging before the evaluation?
Hand / upper extremity Hand, wrist, elbow and upper-extremity injury or reconstruction needs. Does the provider need nerve testing or prior hand imaging?
Foot & ankle Foot and ankle pain, injury, deformity and surgical conditions. Should I bring the shoes, brace or orthotic I normally use?
Sports medicine Athletic and activity-related injuries and return-to-activity planning. What activities should I stop until the appointment?
Chiropractic care Selected musculoskeletal and mechanical pain complaints. Is chiropractic care appropriate with my diagnosis or imaging findings?
Regenerative medicine Selected conditions for which injection-based regenerative approaches may be discussed. What evidence supports this treatment for my exact diagnosis and what will insurance cover?
DME Durable medical equipment and supportive devices used in treatment or recovery. Is the device covered by my plan and is prior authorization required?
Body-area shortcut

Not sure which specialist to ask for? Start with the painful body area

Shoulder Rotator-cuff symptoms, arthritis, instability, trauma or replacement evaluation.
Elbow Trauma, tendon conditions, upper-extremity problems or reconstruction.
Hand / wrist Pain, nerve symptoms, injury, fracture or reconstructive need.
Hip Arthritis, chronic pain, trauma or possible hip-replacement evaluation.
Knee ACL and sports injuries, arthritis, instability, trauma or joint replacement.
Foot / ankle Foot pain, ankle injury, structural problems, podiatry and surgical evaluation.
Scheduling shortcut: If you do not know the diagnosis, that is okay. Give AVORS the body area, symptoms, how the injury occurred and any imaging already completed. The office can route the appointment more accurately from those details.
Provider routing

Which types of doctors work with AVORS Medical Group?

The current AVORS provider directory includes orthopedic surgeons, orthopedic-trauma surgeons, physical-medicine and rehabilitation specialists, pain-management physicians, foot-and-ankle specialists, chiropractic care and other musculoskeletal clinicians.

Selected current AVORS providers and published areas
Provider Published role Possible reason a patient may be routed there
Alon Antebi, D.O., FAAOS Board-certified orthopedic trauma surgeon. Orthopedic trauma, complex injury and reconstruction.
Thomas S. Nasser, D.O. Board-certified Physical Medicine & Rehabilitation physician. Pain, rehabilitation and musculoskeletal function.
Justin Sherfey, D.O. Board-certified orthopedic surgeon. Orthopedic evaluation and surgical care.
Kofi Agyeman, M.D. Board-certified orthopedic surgeon with shoulder and elbow focus. Shoulder, elbow and upper-extremity reconstruction.
Justin B. Heller, M.D., FACS Board-certified trauma plastic surgeon. Reconstructive and selected hand or upper-extremity needs.
Orlando Pena, D.O. Board-certified Physical Medicine & Rehabilitation physician. Rehabilitation, pain and restoration of function.
Gregory Tennant, D.O. Orthopedic trauma surgeon. Traumatic orthopedic injuries and complex fracture care.
Eric Owashi, M.D., FAAOS Orthopedics and total joints. Joint-replacement and orthopedic evaluation.
Kyle Hopkins, D.P.M. Foot and ankle surgeon. Foot and ankle disorders and surgical evaluation.
Tony Smith, D.C. Chiropractic and physiotherapy. Selected mechanical and musculoskeletal complaints.
Provider schedules change. Use the provider directory to understand specialties, but confirm current office location, new-patient availability and insurance participation when scheduling.
Check current AVORS provider directory
Orthopedic care

What orthopedic problems does AVORS evaluate?

AVORS describes orthopedic medicine as care involving bones, joints and muscles as well as related nerves, tendons and ligaments. The practice treats pediatric, adult and older patients depending on the provider and condition.

FX
Fractures

Bone injuries ranging from straightforward fractures to more complex orthopedic trauma.

J
Joint pain

Pain, stiffness, swelling, reduced motion, instability and degenerative joint problems.

S
Sprains

Ligament injuries and related mobility or stability concerns.

T
Tendon injuries

Overuse, sports or traumatic tendon conditions involving upper or lower extremities.

A
Arthritis

Joint degeneration and inflammation requiring conservative or surgical planning.

R
Recovery

Rehabilitation and follow-up designed to restore strength, motion and function.

Surgical treatment is not automatically the first step

AVORS’s orthopedic information describes nonsurgical options when appropriate. Depending on diagnosis and medical history, treatment discussions may include physical therapy, anti-inflammatory medication, bracing, lifestyle changes and targeted injections before surgery is considered.

Useful question for the surgeon: “What is my diagnosis, what happens if I wait, what nonsurgical treatment remains reasonable, and what specific improvement should surgery provide that those options cannot?”
Hip, knee and shoulder

AVORS total joint replacement: what patients should understand before surgery

AVORS lists both total and partial joint-replacement options. Joint replacement may be considered when pain, stiffness, swelling, weakness, instability or severely limited range of motion continues despite appropriate treatment.

Hip
  • Hip replacement
  • Anterior total hip replacement
  • Other joint-preservation options when appropriate
Knee
  • Total knee replacement
  • Partial knee replacement
  • Selected robotic-assisted approaches
Shoulder
  • Total shoulder replacement
  • Reverse shoulder replacement
  • Other repair or reconstruction depending on diagnosis

Questions to answer before agreeing to joint replacement

What exactly is damaged?
Why is replacement preferred now?
What nonsurgical options remain?
Total or partial replacement?
Where will surgery occur?
What type of anesthesia is expected?
What equipment will I need at home?
When does physical therapy begin?
When can I drive?
What symptoms require an urgent call?
What will insurance require beforehand?
What is the estimated total patient cost?
Important 2026 local development: AVORS reported in March 2026 that its joint program, working with Embassy Surgery Center and Dr. Eric Owashi, added access to the VELYS robotic-assisted system for selected knee-replacement procedures in Lancaster. Robotic assistance does not automatically mean a patient is a candidate; suitability must be decided during surgical evaluation.
Pain + function

How AVORS pain management and rehabilitation fit into orthopedic care

AVORS describes chronic pain as pain that may continue beyond normal healing and can interfere with work, daily activities and quality of life. Its Physical Medicine & Rehabilitation physicians focus on conditions affecting nerves, muscles and bones and on restoring function.

Define the pain Location, duration, severity, triggers, weakness, numbness and effect on normal activities are reviewed.
Identify the underlying condition The clinician may review prior imaging, examination findings, previous treatment and whether additional testing is necessary.
Set a functional goal A useful treatment goal may be walking farther, sleeping better, returning to work, improving strength or participating in rehabilitation—not simply changing a pain score.
Choose treatment Depending on the diagnosis, options may involve medication management, rehabilitation, therapy, targeted procedures or collaboration with an orthopedic surgeon.
Reassess response Follow-up should measure function, side effects, pain pattern and whether the treatment is achieving the agreed goal.
Bring a treatment history: Write down previous injections, therapy courses, operations, medications and whether each one helped. “I tried therapy” is less useful than “I completed eight weeks and improved walking but not nighttime pain.”
Coverage verification

Does AVORS Medical Group accept your insurance?

Do not rely on an old online insurance list. The official AVORS patient pages reviewed for this guide do not publish a complete current payer-and-network roster. Insurance participation can also vary by provider, procedure and location.

Before the visit, verify coverage in two directions: first with AVORS, then with the insurer. This catches problems that a simple “yes, we accept that insurance company” answer can miss.

Read the complete plan name Give AVORS the insurer, network, product type and member details printed on the card.
Verify the exact physician A medical group may participate while a particular provider, location or service has a different status.
Verify the exact AVORS location Ask the insurer to check the street address where the appointment or procedure will occur.
Ask about specialist referrals HMO and other managed plans may require a primary-care referral before orthopedic or pain-management care.
Ask about prior authorization MRI, injections, DME, therapy and surgical procedures may require separate approval.
Get a reference number Save the date, representative’s name and call-reference number from the insurer.
Insurance call script
“I am planning care with AVORS Medical Group at [Lancaster/Sylmar] with [provider] for [consultation, imaging, injection, therapy or surgery]. Is this provider and location in network under my exact plan? Do I need a referral or prior authorization, and what deductible, copay or coinsurance applies?”
Billing preparation

What to ask about cost before orthopedic treatment

AVORS’s contact page states that the practice accepts cash, credit card and check. The amount you owe for clinical care, however, depends on the service and insurance terms.

Office visit

Ask about the specialist copay, deductible and whether new imaging may create a separate charge.

Procedure or injection

Ask whether the medication, procedure, ultrasound or fluoroscopy guidance and facility charge are billed separately.

Surgery

Ask separately about surgeon, facility, anesthesia, implant, imaging, pathology, therapy and DME costs when applicable.

Cost question that prevents surprises: “Is the amount you are quoting only AVORS’s professional fee, or does it include the facility, anesthesia, implant, imaging, brace and rehabilitation?”
Medical records

How to request AVORS Medical Group medical records

AVORS publishes a specific medical-records extension through its Lancaster office: 661-726-5005, extension 152.

Decide exactly what you need Ask whether the receiving provider needs the complete chart or only clinic notes, imaging reports, procedure reports or operative records.
Choose a date range Narrow requests are easier to route and can reduce unnecessary pages.
Identify the recipient Have the doctor’s name, facility, fax number or secure delivery information ready.
Complete required authorization AVORS’s new-patient materials include medical-information release paperwork, and additional authorization may be required depending on the request.
Ask whether images are included Medical records and actual radiology images may be maintained or transmitted differently.
Confirm receipt before an important specialist visit Do not assume a fax or electronic transfer reached the new doctor. Verify before traveling.
Records call script
“I need records for [patient name and date of birth] covering [date range]. Please tell me which authorization is required and whether you can send [clinic notes / operative report / imaging report / complete chart] to [provider and destination]. Do I need to request the actual imaging separately?”
Medical records: 661-726-5005 ext. 152
After the examination

What should happen after an AVORS visit?

You were given a diagnosis Ask the doctor to explain the diagnosis in plain language and identify the structure causing the symptoms.
An MRI or another test was ordered Ask who obtains authorization, where the test will be performed and who contacts you with results.
Physical therapy was recommended Ask how soon to begin, how often to attend and which activities should be avoided meanwhile.
A brace or DME item was recommended Ask how long to wear it, whether it can be removed for sleep or bathing and whether insurance approval is required.
An injection was recommended Ask what medication is being used, expected benefit, important side effects and what activity restrictions follow the injection.
Surgery was recommended Ask what operation, why now, alternatives, recovery milestones and preauthorization steps apply before choosing a date.
You are waiting for a result Ask at the visit exactly how results are delivered and when you should call if you have not heard back.
The condition is suddenly worse Call the treating office for guidance. Severe or life-threatening symptoms belong in emergency care.
Local patient shortcuts

Practical AVORS tips that can save a second trip

01
Bring the imaging, not only the report

Ask whether the specialist needs the actual study so it can be reviewed directly.

02
Confirm Lancaster vs. Sylmar

Provider schedules can differ by location. Save the exact address from the appointment confirmation.

03
Complete forms at home

The new-patient packet is detailed. Finishing it beforehand leaves more time to focus on the medical visit.

04
Know your medication doses

A drug name without strength or schedule may not be enough for safe medication review.

05
Verify procedure authorization

An approved office consultation does not automatically mean an MRI, injection or operation is approved.

06
Ask what improvement is realistic

Recovery goals should be specific: walking, sleep, work, range of motion or return to an activity.

07
Track numbness and weakness

Write down where it occurs and whether it is constant or triggered by a position or activity.

08
Use the records extension

For records questions, call the Lancaster number and ask for extension 152 instead of starting with a general message.

09
Save insurer reference numbers

Document prior-authorization and network-verification calls in case coverage is questioned later.

When not to wait

Orthopedic warning signs that need faster medical attention

AVORS specifically advises prompt medical attention after traumatic injury when a joint is deformed, when a patient cannot walk or move the leg, or when weight cannot be placed on the injured leg.

Contact urgent medical care after significant injury when:
  • A joint or limb appears visibly deformed.
  • You cannot bear weight after a significant injury.
  • You cannot move the affected limb normally.
  • Pain or swelling is severe after trauma.
  • Symptoms are rapidly worsening rather than stabilizing.
Call 911 for a life-threatening emergency such as:
  • Loss of consciousness.
  • Severe uncontrolled bleeding.
  • Serious breathing difficulty.
  • Chest pain or suspected heart emergency.
  • Possible stroke symptoms.
  • Major multi-system trauma.
10 patient questions

AVORS Medical Group frequently asked questions

What does AVORS Medical Group specialize in?

AVORS focuses on musculoskeletal care including orthopedics, orthopedic trauma, joint replacement, pain management, rehabilitation, hand and upper-extremity care, foot and ankle treatment, chiropractic care, sports medicine, regenerative medicine and DME.

Where are AVORS Medical Group offices?

AVORS currently publishes locations in Lancaster and Sylmar, California. The Lancaster office is at 42135 10th Street West, Suite 101, Lancaster, CA 93534. Confirm the exact Sylmar address shown on your appointment before travel.

What are AVORS office hours?

The general hours published by AVORS are Monday through Friday from 8 a.m. to 5 p.m., with Saturday and Sunday closed. Individual provider or procedure schedules can differ.

How do I schedule an AVORS appointment?

Call Lancaster at 661-726-5005 or Sylmar at 661-705-5100. Give the scheduler your body area, symptoms, existing diagnosis, insurance information and whether you already have imaging or a referral.

Does AVORS have a patient portal?

Yes. The official AVORS website links patients to an AdvancedMD patient portal for online patient access.

What forms should a new AVORS patient complete?

The official new-patient packet includes identity and insurance information, assignment and release paperwork, payment policy, arbitration agreement, authorization to release medical information, privacy acknowledgement, relevant pain or chiropractic agreements and a health-history questionnaire.

How do I request medical records from AVORS?

Call 661-726-5005 and ask for extension 152. Be ready to identify the patient, date range, record type and recipient and to complete any required authorization.

Does AVORS perform hip, knee and shoulder replacement?

Yes. AVORS lists hip replacement, anterior total hip replacement, knee replacement, partial knee replacement and total or reverse shoulder replacement among its joint services.

Does AVORS accept my insurance?

Coverage depends on the exact plan, network, provider and procedure. Because a complete current payer roster is not published on the AVORS pages used for this guide, verify directly with both AVORS and your insurance company before receiving care.

When should I seek urgent care instead of waiting for an orthopedic appointment?

Seek prompt evaluation after traumatic injury when a joint appears deformed, you cannot walk or move the injured leg, or you cannot bear weight. Call 911 for a potentially life-threatening emergency.

Final live actions

AVORS official tools to use after you know what you need

The patient workflow is explained above. Use these official AVORS systems when you are ready to complete the final action.

Contact / appointment request Patient portal Patient forms Orthopedic services Joint replacement Pain management
Independent information notice:

USMedicalGroup.org is not AVORS Medical Group and cannot schedule care, determine medical eligibility, confirm insurance benefits or provide treatment. Provider schedules, locations, insurance participation and clinical services may change.

This guide is educational and does not replace evaluation by a qualified healthcare professional. Call 911 for a life-threatening emergency.

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