Preventive & wellness care
Annual physicals, screenings, and chronic-condition management — blood pressure, diabetes, cholesterol.
PHYSICIAN-LED PRIMARY CARE · FAIRFAX, VIRGINIA
Care That Knows You.
Experienced physicians. Personalized care. A relationship you can count on.
For more than 18 years, United Doctors Medical Center has provided thoughtful, personalized medical care to patients and families in Fairfax and the surrounding Northern Virginia communities.
From preventive care and chronic disease management to same-day visits, immigration medical examinations, weight management, and wellness services, we're here for the care you need today—and the health you want for tomorrow.
Expert care. Familiar faces.Two board-certified physicians, one caring practice.
Here for every
chapter of your life.
FEELING BETTER STARTS HEREThe right care, when you need it.
More than a visit.
A relationship.
Since 2008Part of the Fairfax community
Care in your languageEnglish, Urdu, Hindi & more
More care, one placeOn-site labs & video visits
CARE FOR YOUR EVERYDAY. AND YOUR WHAT-IFS.
A healthier you.
At every stage of life.
From your annual checkup to the unexpected sick day, we bring a personal approach to everyday medicine.
Sick & urgent visits
Coughs, fevers, infections, ear and sinus problems, rashes, urinary symptoms, sprains, and other injuries that don't need an ER. We can do rapid strep, flu, and urine testing in the office. Call in the morning — we keep room in the schedule.
Telemedicine
Video visits for follow-ups, medication questions, and many sick visits that do not need an exam room. Call the office to see whether your concern can be handled by video — some visits still need to be in person.
On-site laboratory
Blood draws and urine testing in the office. Common orders include CBC, metabolic panels, glucose, flu, and screening labs. Results return to your own doctor, and a clinician follows up. We work with established laboratory partners so most routine work has a short turnaround.
Vaccines & injectables
Routine immunizations for children and adults, flu shots, and injectable medications given by clinical staff.
Women's & men's health
Well-woman and well-man exams, hormonal and reproductive concerns, and age-appropriate screening.
Child medicine
School and sports physicals, well-child exams, childhood vaccinations, and sick care for the youngest in the family.
Immigration physicals (I-693)
Examinations, vaccination review, and required lab testing for Form I-693. Your sealed envelope is prepared when results and requirements are complete.
Explore this careWeight loss & GLP-1 shots
Physician-supervised weight management — personalized plans, with weekly semaglutide or tirzepatide for qualifying patients.
Explore this careExperienced. Compassionate. Patient-Focused.
Your doctors.
Your partners in health.
Two board-certified physicians with more than twenty years of experience each. Here to listen, understand, and care for the whole you.
INTERNAL MEDICINEInternal Medicine · Founder
Sadia Masood, MD
A familiar face in Fairfax since 2008. Dr. Masood brings a thoughtful, personal approach to your long-term health.
Monday–Friday · English, Urdu, Hindi
Get to know Dr. Masood
Dr. Masood founded United Doctors Medical Center in 2008 and has served the Fairfax community ever since. She completed her medical degree at Deccan College of Medical Sciences. Board-certified in internal medicine with more than twenty years in practice, she completed her residency at Franklin Square Hospital after an internship at St. Agnes Hospital in Baltimore. She holds admitting privileges at Inova Fairfax and Inova Fair Oaks — and she is one of the few physicians who still cares for her own patients when they're hospitalized.
- Board-certified, Internal Medicine
- Admitting privileges: Inova Fairfax & Fair Oaks
- Sees patients Monday through Friday
- Speaks English, Urdu and Hindi; conversational Telugu
FAMILY MEDICINEBoard-Certified Family Physician
Rashid Mohiuddin, MD, FAAFP
Comprehensive medical care and long-term relationships with patients and families.
Fridays · English, Urdu, Hindi
Get to know Dr. Mohiuddin
Dr. Rashid Mohiuddin is a board-certified family physician with more than 20 years of experience caring for patients across a broad range of medical needs. He completed his residency in Family Medicine at Howard University Hospital in Washington, DC, and is a Fellow of the American Academy of Family Physicians. His approach to medicine emphasizes listening carefully, understanding the individual patient, preventive care, and developing practical treatment plans that patients can understand and follow. At United Doctors Medical Center, Dr. Mohiuddin provides comprehensive medical care while building long-term relationships with patients and families.
- Board-certified, Family Medicine · Fellow, AAFP
- Residency, Howard University Hospital
- Sees patients on Fridays
- Speaks English, Urdu and Hindi; conversational Arabic
NEW HERE? YOU’RE IN THE RIGHT PLACE.
How a first visit works
Let’s make your first visit feel a little more familiar. A few simple steps, and we’ll take it from there.
Your new-patient guide
- 01
Schedule
Call (703) 573-0086 to book. Walk-ins are welcome during office hours when the schedule allows; calling first is faster. Same-day sick visits: call in the morning.
- 02
Forms we send
If we have sent new-patient forms, complete them before you arrive so you spend less time in the waiting room.
- 03
What to bring
Photo ID, Insurance card, a list of current medications and pharmacies, and relevant records or vaccine cards if you have them.
- 04
Your visit
Appointments are 15-minute blocks. Copays are due at the visit. We e-prescribe to your pharmacy.
What patients say
In their words.
Personal care makes a difference.
A turning point in my life was hearing the words, ‘I think this has been a misdiagnosis,’ and I am, thanks to you, now back on the road to health and happiness.
I was referred to Dr. Masood by a friend and we both love and trust her for our health care. She is very caring and spends as much time with you as you need. I’m also impressed with how much she remembers about my past visits without checking the computer.
Dr. Mohiuddin is a great doctor, compassionate and caring. He really listens to his patients. He has been my doctor for 10+ years.
LESS GUESSWORK. MORE PEACE OF MIND.
Let’s talk coverage.
We work with most major insurance plans. Participation varies by specific plan, so our billing team will verify your coverage before your visit.
Questions? Call our team11 options listed · specific plan coverage must be verified
- Anthem HealthKeepers
- Anthem Blue Cross Blue Shield
- Cigna Health
- CareFirst Blue Cross Blue Shield
- Sentara Health Plans
- UnitedHealthcare
- Aetna
- Humana
- TRICARE
- Medicare
- Self-pay
Don’t see your plan? Please ask. Self-pay options are available.
GOOD CARE, CLOSE TO HOME.
We’re right here
in your neighborhood.
One office in Merrifield, near the Mosaic District. Familiar faces, easy directions, and a team ready to help.
UNITED DOCTORS MEDICAL CENTER2812 Old Lee Highway, Suite 210B
Fairfax, VA 22031
Fairfax, VA 22031
Near the Mosaic District · Merrifield
Get directionsPlease do not email protected health information.
A little planning goes a long way.
| Monday | 9:00 AM – 5:00 PM |
|---|---|
| Tuesday | 9:00 AM – 5:00 PM |
| Wednesday | 9:00 AM – 5:00 PM |
| Thursday | 9:00 AM – 5:00 PM |
| Friday | 9:00 AM – 5:00 PM |
| Saturday & Sunday | Closed |
Last appointment: 4:45 PM. Dr. Masood’s first appointment is at 10:00 AM on weekdays. Dr. Mohiuddin sees patients Fridays from 9:00 AM.
After hours & holiday information
After hours: call (703) 573-0086 for urgent issues. Closed New Year’s Day, Memorial Day, Independence Day, Labor Day, Thanksgiving, and Christmas.
For a life-threatening emergency, call 911 or go to the nearest emergency room.
A FEW THINGS YOU MAY BE WONDERING
Good questions.
Clear answers.
Can’t find what you need? Our front desk is happy to help.
Call (703) 573-0086Where is United Doctors Medical Center located?
One office at 2812 Old Lee Highway, Suite 210B, Fairfax, VA 22031 — near the Mosaic District in Merrifield. Exit toward Mosaic; we are on Old Lee Highway.
What are your office hours?
Monday through Friday, 9:00 AM to 5:00 PM. The last appointment starts at 4:45 PM. Dr. Masood sees patients weekdays (first appointment 10:00 AM). Dr. Mohiuddin sees patients on Fridays from 9:00 AM.
What languages are spoken?
Both physicians speak English, Urdu, and Hindi. Dr. Masood also has conversational Telugu; Dr. Mohiuddin has conversational Arabic.
Do you offer USCIS Immigration Physicals?
Yes. Form I-693 examinations are booked in 15-minute appointment blocks. The completed sealed envelope is provided after required results and vaccinations are complete. Call (703) 573-0086 to schedule.
Do you offer telemedicine?
Yes. Video visits are available for follow-ups, medication questions, and many sick visits that do not need an exam room. Call the office to confirm whether your concern can be handled by video — some visits still need to be in person.
Which insurance plans do you accept?
We work with Anthem HealthKeepers, Anthem Blue Cross Blue Shield, Cigna Health, CareFirst Blue Cross Blue Shield, Sentara Health Plans, UnitedHealthcare, Aetna, Humana, TRICARE, and Medicare. Participation varies by plan — call so billing can verify coverage before you come. Self-pay options are available.
LET’S TAKE GOOD CARE OF YOU.
A healthier tomorrow
starts with a hello.
One conversation. A caring team. Your next step.