NPPES file of Aug 9, 2026

Doctors and health care providers in Fairfax, VA

6,584 individual NPPES records list a practice address in Fairfax, 4th of 351 Virginia cities. The largest group is clinical social worker: 421, 6% of the city's records, against 5% across Virginia. Page 76 of 132.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Fairfax

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Fairfax in Virginia

  • Rank in Virginia4th of 351 cities by records
  • Share of the state4.4% of Virginia's records
  • Specialties present25 or more taxonomy codes
  • Top three groups18% of all records
  • Clinical Social Worker rank3rd of the 10 Virginia cities with the most

Compared with Virginia as a whole, Fairfax has 7.6× the state's share of school social worker records and 0.40× its share of student in an organized health care education/training program records.

Providers in Fairfax, alphabetically

  1. Maurice Martinez, LPCMental Health Counselor1801449988
  2. Jennifer Martini, MDFamily Medicine Physician1225357825
  3. Amanda Marvin, ATCAthletic Trainer1497142780
  4. Vincent Mascatello, MDPediatric Radiology Physician1124006747
  5. Philbert MaselePersonal Care Attendant1962118273
  6. Karen Maser, M.D.Obstetrics & Gynecology Physician1699834986
  7. Catherine Maskell, ARNPAcute Care Nurse Practitioner1205116613
  8. Heather Maslonek, LCSWClinical Social Worker1619293339
  9. Youssef Masmoudi, MDDiagnostic Radiology Physician1386208882
  10. Anna Mason, FNP-CFamily Nurse Practitioner1831809466
  11. David Mason, LPCProfessional Counselor1932477668
  12. Patrick Mason, MDPediatric Endocrinology Physician1144335308
  13. Hiba Masood, FNP-BCFamily Nurse Practitioner1083045587
  14. Khairunnisa Masood, MDInternal Medicine Physician1093731499
  15. Sadia Masood, M.D.Internal Medicine Physician1528244217
  16. Elsayed MasoudBehavior Analyst1720959422
  17. Aubrey Massmann, DOFamily Medicine Physician1174191670
  18. Reda Massoud, RPHPharmacist1811298979
  19. Brian Masterson, MD, MPHPsychiatry Physician1225062383
  20. Lana MastiGeneral Practice Dentistry1821788969
  21. Kristen MastonyOccupational Therapist1154971505
  22. Christos Mastroyannis, MD FACOGReproductive Endocrinology Physician1629009543
  23. Hala Mata, FNPFamily Nurse Practitioner1003583014
  24. Patrick Matheny, PA-CMedical Physician Assistant1073534814
  25. Grace Mathew, PHARM.DPharmacist1093479347
  26. Sherina MathewOccupational Therapist1235543661
  27. John MathewsInternal Medicine Physician1215963129
  28. Previtha MathewsCertified Registered Nurse Anesthetist1134633597
  29. Susan Mathews, RPHPharmacist1790054658
  30. Elizabeth Mathews-JolleySchool Social Worker1861997918
  31. Frank Mathieu, M.D.Anesthesiology Physician1568464121
  32. Joselyn MathisPharmacist1447611769
  33. Priya MathurInternal Medicine Physician1346407418
  34. Thiago Matias, DDSGeneral Practice Dentistry1225341647
  35. Victoria Matkowski, CCC-SLPSpeech-Language Pathologist1114262102
  36. Jennifer Matro, MDMedical Oncology Physician1972765550
  37. Olivia Matson, M.S., CCC-SLPSpeech-Language Pathologist1225754435
  38. James Mattern, O.D.Optometrist1104973205
  39. Teresa MattersProfessional Counselor1720763683
  40. Jay MatthewsPharmacy Technician1649661034
  41. Keisha Matthews, BS MA LCPC LPC ACSProfessional Counselor1790080257
  42. Kimberly Matthijssen, MS, LCGCGenetic Counselor (M.S.)1568827293
  43. Denise MattinglySchool Psychologist1588168694
  44. Rebecca MattoxBehavior Technician1750145223
  45. Michael Matyi, PHARMDPharmacist1023862208
  46. Kimberly Matzie, MDColon & Rectal Surgery Physician1861579898
  47. Lauren Mauro, M.D.Medical Oncology Physician1457536344
  48. Evangelia MavridouSchool Psychologist1407340425
  49. Catherine Maxwell, PAPhysician Assistant1952164782
  50. Jamison Maxwell, MDFamily Medicine Physician1922629369

The largest Virginia cities

  1. Richmond14,083
  2. Virginia Beach9,147
  3. Charlottesville7,000
  4. Norfolk5,993
  5. Alexandria5,424

All of Virginia →

How to read this directory

Fairfax, Virginia appears in the CMS National Plan and Provider Enumeration System with 6,584 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Fairfax - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Fairfax practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in Fairfax is weighted toward Clinical Social Worker (421 clinicians, followed by Behavior Technician with 401 and Speech-Language Pathologist with 361). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to Virginia's population, Fairfax reports roughly 76.2 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

For Fairfax patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.

Common questions

How many doctors are in Fairfax, VA?

There are 6,584 registered healthcare providers in Fairfax, VA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Fairfax?

The most common specialties in Fairfax are Clinical Social Worker, Behavior Technician, Speech-Language Pathologist, Professional Counselor, Physical Therapist. Clinical Social Worker has the most providers with 421.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.