NPPES file of Aug 9, 2026

Doctors and health care providers in Frederick, MD

3,981 individual NPPES records list a practice address in Frederick, 6th of 284 Maryland cities. The largest group is behavior technician: 427, 11% of the city's records, against 16% across Maryland. Page 71 of 80.

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

The 8 largest groups in Frederick

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

Frederick in Maryland

  • Rank in Maryland6th of 284 cities by records
  • Share of the state2.5% of Maryland's records
  • Specialties present25 or more taxonomy codes
  • Top three groups25.7% of all records

Compared with Maryland as a whole, Frederick has 2.3× the state's share of massage therapist records and 0.60× its share of internal medicine physician records.

Providers in Frederick, alphabetically

  1. Barbara TarlowskiPhysical Therapy Assistant1578934550
  2. Meaghan Tarquinio, LCSW-CClinical Social Worker1801595012
  3. Marshall Tarzy, DPMPodiatrist1194852707
  4. Susan TassinSchool Psychologist1093530065
  5. Jennifer Tatanish, LBABehavior Analyst1376163188
  6. Marie Tate, PMHNPPsychiatric/Mental Health Nurse Practitioner1346903051
  7. Melissa Tatem, PTPhysical Therapist1609847466
  8. Douglas Tavenner, D.D.S.General Practice Dentistry1174678262
  9. Aryna TaylorBehavior Technician1770219362
  10. Roberta Taylor, PA-CPhysician Assistant1033189386
  11. Ruth Taylor, OTROccupational Therapist1235619594
  12. Paul TeieAudiologist-Hearing Aid Fitter1477508752
  13. Marc Teitelbaum, M.D.Obstetrics & Gynecology Physician1841593548
  14. Mesay TekluPharmacist1366915035
  15. Alyssa TennantBehavior Analyst1992440333
  16. Melissa Tennant, P.T.Physical Therapist1073558961
  17. Lawrence Tepper, MS MACAcupuncturist1316029135
  18. Edna Termilus, MDPediatrics Physician1992020838
  19. Coralia Terol, DPMFoot & Ankle Surgery Podiatrist1902135296
  20. Jane Terry, M.D.Psychiatry Physician1861481632
  21. Azeb Tesfalidet, M.D.Family Medicine Physician1487687521
  22. Emily TexSchool Psychologist1376369041
  23. Lili ThaPhysician Assistant1114699428
  24. Renju Thackenkary, BDS,DDSGeneral Practice Dentistry1932410297
  25. Sunil Thadani, MDOphthalmology Physician1790951986
  26. Grace Thammasuvimol, M.D.Child & Adolescent Psychiatry Physician1992948277
  27. Casandra Theriault, LGSWSocial Worker1750897385
  28. Anjali ThomasBehavior Technician1619801263
  29. Derek ThomasBehavior Analyst1821667387
  30. Elijah ThomasBehavior Technician1174201354
  31. Hallie Thomas, PA-CPhysician Assistant1548157944
  32. Joseph Thomas, PHARMDPharmacist1174932420
  33. Malyn ThomasClinical Social Worker1235081258
  34. Margareta Thomas, MSW, LCSW-CClinical Social Worker1245381235
  35. Petra Thomas, M.D.Pulmonary Disease Physician1518957661
  36. Rosemary Thomas, L.C.P.C.Professional Counselor1295817203
  37. Selena Thomas, MDObstetrics & Gynecology Physician1265615116
  38. Tina Thomas, CRNPPediatric Nurse Practitioner1043757156
  39. Renee Thomas-Spencer, MDObstetrics & Gynecology Physician1407839772
  40. David Thomassen, MS, LGPCMental Health Counselor1013338623
  41. Alexa Thompson, DCChiropractor1972374668
  42. Debra Thompson, LCSW-CClinical Social Worker1831419100
  43. Erin Thompson, PT, DPTPhysical Therapist1366871345
  44. Hannah ThompsonBehavior Technician1285519934
  45. Kassie ThompsonBehavior Technician1811400765
  46. Katherine ThompsonSocial Worker1770258899
  47. Maggie ThompsonSpeech-Language Pathologist1255840070
  48. Matthew ThompsonPhysical Therapist1548028673
  49. Meghan Thompson, M.S., S.S.P.School Psychologist1740005719
  50. Patrick Thompson, LACAcupuncturist1003323478

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

Frederick, Maryland appears in the CMS National Plan and Provider Enumeration System with 3,981 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 Frederick - 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 Frederick 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 Frederick is weighted toward Behavior Technician (427 clinicians, followed by Clinical Social Worker with 348 and Physical Therapist with 249). 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, Frederick reports roughly 64.4 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.

Of Maryland's most common specialties, Home Health Aide is the most prominent one with no provider currently listing a Frederick practice address, a coverage gap Frederick patients typically fill by traveling to a larger nearby hub.

For Frederick 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 Frederick, MD?

There are 3,981 registered healthcare providers in Frederick, MD, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Frederick?

The most common specialties in Frederick are Behavior Technician, Clinical Social Worker, Physical Therapist, Professional Counselor, Mental Health Counselor. Behavior Technician has the most providers with 427.

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.