NPPES file of Aug 9, 2026

Doctors and health care providers in Gaithersburg, MD

2,580 individual NPPES records list a practice address in Gaithersburg, 9th of 284 Maryland cities. The largest group is behavior technician: 580, 22% of the city's records, against 16% across Maryland. Page 29 of 52.

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

The 8 largest groups in Gaithersburg

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

Gaithersburg in Maryland

  • Rank in Maryland9th of 284 cities by records
  • Share of the state1.6% of Maryland's records
  • Specialties present25 or more taxonomy codes
  • Top three groups36.3% of all records
  • Behavior Technician rank7th of the 10 Maryland cities with the most

Compared with Maryland as a whole, Gaithersburg has 2.5× the state's share of acupuncturist records and 0.26× its share of home health aide records.

Providers in Gaithersburg, alphabetically

  1. Mark Macauley, LGSWClinical Social Worker1679021794
  2. Roxana Macelaru, MAAssistant Health Information Record Technician1174474639
  3. Tatiyana MaciasBehavior Technician1932020690
  4. Julieta Macias-Martinez, LCSW-C, PH.D.Clinical Social Worker1205277589
  5. Julia Mack, LCSWCClinical Social Worker1972664423
  6. Karisma MackBehavior Technician1811796907
  7. Carla Macleod, MDAnatomic Pathology & Clinical Pathology Physician1699774497
  8. William Macleod-Silberstein, LMSWClinical Social Worker1295477362
  9. Hameedah MadyunBehavior Technician1063384329
  10. Brittany Mahalick, M.S.Genetic Counselor (M.S.)1184024929
  11. Michelle MaherBehavior Technician1013787522
  12. Sameea Mahmud, DMDDentist1770245888
  13. Richard Mahon, M.D.Pulmonary Disease Physician1538237730
  14. Barbara Mai, PH.D., APRN, BC-PAdult Psychiatric/Mental Health Registered Nurse1821065350
  15. Varshasarvani MajetiBehavior Technician1326804287
  16. Mahshid Majlessi KoopaeeiDentist1235573486
  17. Gnyapti MajmudarGenetic Counselor (M.S.)1093462244
  18. Marian MakhoulBehavior Technician1154183770
  19. Lisa Makstein, LCSW-CClinical Social Worker1801094107
  20. Maria Maletta, RPHPharmacist1336767995
  21. Arnold Malhmood, DDSGeneral Practice Dentistry1447261342
  22. Sushmita MalikInternal Medicine Physician1477189322
  23. Kevin Malloy, PHARMDPharmacist1528507571
  24. Sara MamozaiBehavior Technician1518894054
  25. Maryanne Mancuso, APRNAdult Psychiatric/Mental Health Registered Nurse1215149794
  26. Grace Manglet, DNP ( PMH-NP-BC)Psychiatric/Mental Health Nurse Practitioner1013206655
  27. Samantha MangunePharmacist1699437582
  28. James Manwaring, D.M.D.General Practice Dentistry1598067035
  29. Rozhan ManzaBehavior Technician1891584132
  30. Yani MaoAcupuncturist1265301477
  31. Ann Lorry Marcelin, LGPCMental Health Counselor1033707310
  32. Sruthi MareeduPhysical Therapist1154094746
  33. Victoria Marin, MA, BCBA, LBABehavior Analyst1194155895
  34. Sarah Marionneaux, LGPCProfessional Counselor1669943254
  35. Christopher MarkClinical Social Worker1417307364
  36. Avis Marleau-WebbCertified Registered Nurse Anesthetist1326298068
  37. Amada Marquez, AMADANurse's Aide1700366945
  38. Jennifer Marquez AguilarClinical Social Worker1750937900
  39. Davielle Marsh, LCSW-CClinical Social Worker1619754678
  40. Evelyn MarshBehavior Technician1184491607
  41. Brittany Marshall, LCSW-CClinical Social Worker1811578677
  42. Dominique MarshallBehavior Technician1891441952
  43. Suzette MarshallBehavior Technician1588414478
  44. Aisha MartinSocial Worker1720407836
  45. Bradley Martin, CAPSHome Modifications Contractor1851693659
  46. Geoffrey Martin, MDRadiation Oncology Physician1245675800
  47. Jandel MartinBehavior Technician1629959242
  48. Kathy MartinBehavior Technician1427816669
  49. Kimberly MartinBehavior Technician1972302057
  50. Monica MartinClinical Social Worker1891916011

The largest Maryland cities

  1. Baltimore35,183
  2. Rockville14,353
  3. Bethesda7,245
  4. Columbia6,690
  5. Silver Spring6,531

All of Maryland →

How to read this directory

Gaithersburg, Maryland appears in the CMS National Plan and Provider Enumeration System with 2,580 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 Gaithersburg - 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 Gaithersburg 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 Gaithersburg is weighted toward Behavior Technician (580 clinicians, followed by Clinical Social Worker with 221 and Social Worker with 135). 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 Maryland's population, Gaithersburg reports roughly 41.7 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 Gaithersburg 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 Gaithersburg, MD?

There are 2,580 registered healthcare providers in Gaithersburg, MD, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Gaithersburg?

The most common specialties in Gaithersburg are Behavior Technician, Clinical Social Worker, Social Worker, Pharmacist, Mental Health Counselor. Behavior Technician has the most providers with 580.

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.