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 62 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. Minerva Rosenthal, LCSWClinical Social Worker1699196063
  2. Daniel Rosko, PA-CMedical Physician Assistant1154686392
  3. Deborah Rosman, OTR LHand Occupational Therapist1558376418
  4. Michelle Ross, LMSWSocial Worker1629681218
  5. Rozalyn RossClinical Social Worker1518731389
  6. Samantha Ross, LGPCProfessional Counselor1306321047
  7. Jeremy Roth, M.D.Anesthesiology Physician1346288628
  8. Trudy Roth, PTPhysical Therapist1265903546
  9. Stephanie RothenbergerSocial Worker1043739147
  10. Raymond Rother, PH.D., LCSW-CClinical Social Worker1538203773
  11. Michelle RouchSurgical Assistant1508746843
  12. Mackenzie Rourke, NCC, LPCProfessional Counselor1649118662
  13. Damian Roussel, DPMFoot & Ankle Surgery Podiatrist1659436509
  14. Anthony Rowedder, M.D.Diagnostic Radiology Physician1699711671
  15. Janiece RoyallSpeech-Language Pathologist1114688314
  16. Paulette Rozankowski, FNP-CNurse Practitioner1720954381
  17. Christina RubenSpeech-Language Pathologist1730658501
  18. Alexander Rubin, M.D.Anesthesiology Physician1023064219
  19. Hope Rubin, LGPCProfessional Counselor1144786401
  20. Mamie Ruble, N.P.Nurse Practitioner1255310058
  21. Amanda Ruch, AGPCNP-BCAdult Health Nurse Practitioner1326430414
  22. Jenna Rucker, L. ACAcupuncturist1841730389
  23. Diane Ruckert, CRNPAdult Health Nurse Practitioner1720028673
  24. Abby Rudesill, PTPhysical Therapist1972888709
  25. Ariana Ruetten, LMSWSocial Worker1376226886
  26. Mariah Ruffin, LMSWSocial Worker1831793504
  27. Joseph Ruhala, D.O.Surgery Physician1922415421
  28. Chhiar Ruma, FNPFamily Nurse Practitioner1215634183
  29. Krystle RumbaughPhysical Rehabilitation Occupational Therapist1093259475
  30. Ashley Russell, N.D.Naturopath1285052563
  31. Victoria Russo, LCSW-CClinical Social Worker1558137521
  32. Florin Rusu, MDInternal Medicine Physician1578522280
  33. Calvin Ryan, LMSWSocial Worker1215776869
  34. Jamie RyanBehavior Technician1427991587
  35. Rachael RybakMental Health Counselor1669079737
  36. Sujung RyuPharmacist1295337509
  37. Kenneth Saad, LCPCProfessional Counselor1912107335
  38. Muhammad Saad, MDInterventional Cardiology Physician1083090278
  39. Nicole Saavedra, CRNPFamily Nurse Practitioner1356914592
  40. Erica Sacchetti, LCSW-CClinical Social Worker1679967426
  41. Jane Sachs, JD, PHDClinical Psychologist1023059698
  42. Chelsea Sadaie, OTR/LPhysical Rehabilitation Occupational Therapist1851776983
  43. Karen Saguban, BSNRegistered Nurse1164198081
  44. Jalal Saied, MDInternal Medicine Physician1477590255
  45. Maryse SaintdicPrimary Care Nurse Practitioner1356105365
  46. Myriam Sakai, C.P.N.P.Pediatric Nurse Practitioner1780683862
  47. Seleste Salamanca, OTROccupational Therapist1295855609
  48. Maya Salameh, M.D.Internal Medicine Physician1669545497
  49. Jengo SallahRegistered Nurse1659231504
  50. Mary Salmon, PTPhysical Therapist1356963854

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.