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 61 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. Harleigh Robbins, LCPC, LPC, LGPCMental Health Counselor1003574104
  2. Kai Robbins, LMTMassage Therapist1790649903
  3. Angela Roberts, PTPhysical Therapist1881601060
  4. Mien Roberts, PHARMACISTPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1861751836
  5. Rosa RobertsonProfessional Counselor1942907597
  6. Katherine Robinett, LMSWSocial Worker1346986809
  7. Elizabeth Robinson, M.AC., L.AC.Acupuncturist1740623370
  8. Janel Robinson, RDHDental Hygienist1033975388
  9. Kristan RobinsonDoula1982530457
  10. Nicole Robinson, LMTMassage Therapist1184337172
  11. Ylodia Robinson, MDMental Health Counselor1003747510
  12. Stanley Robison, D.D.S., M.S.Orthodontics and Dentofacial Orthopedics Dentistry1114388469
  13. Sarah Robles, WHNPInpatient Obstetric Registered Nurse1073366019
  14. Leeann Rock, M.D.Anatomic Pathology & Clinical Pathology Physician1164447405
  15. Barbara RoddyProfessional Counselor1033998562
  16. Deborah Rodriguez-GummoRegistered Nurse1760001721
  17. James Roembke, PSY.D.Psychologist1285756767
  18. McKenzie RoenickBehavior Technician1689512519
  19. Anne Roessler, LCSW-CClinical Social Worker1912902370
  20. Christina RoethlePhysical Therapist1780292748
  21. Deborah Rogan, RNRegistered Nurse1730172487
  22. Colleen RogersClinical Social Worker1972925477
  23. Nikkia RogersPhysical Therapy Assistant1598608937
  24. Richard Rogers, D.D.S.General Practice Dentistry1073732210
  25. Kathleen Rogers-Senuta, PHD; LCPC; SEPMental Health Counselor1972204295
  26. Mikenna Rogowsky, OTR/LOccupational Therapist1689391807
  27. Sheila Rohe, CRNPFamily Nurse Practitioner1972936516
  28. Isabelle Rohloff, LMSWSocial Worker1013615830
  29. Alan Rohrer, M.D.Internal Medicine Physician1326022807
  30. Sarah RohrerBehavior Technician1982123907
  31. Justin RollinsBehavior Technician1770378259
  32. Ellen Rollman, MMT, LMTMassage Therapist1316417199
  33. Robin Rolph, M. ED., L.AC.Acupuncturist1639389760
  34. Brittany Roman, BEHAVIOR TECHNICIANBehavior Technician1346949369
  35. Christine RomanStudent in an Organized Health Care Education/Training Program1235015082
  36. Ld RomaneEmergency Medicine Physician1487681060
  37. Elena RomanekPhysical Therapist1730788233
  38. Branislav Romanic, MDNephrology Physician1649239153
  39. Sheyla RomeroBehavior Technician1679424279
  40. Erin Roosa, DPTPhysical Therapist1013045178
  41. Karen Ropp, LCSW-CClinical Social Worker1841411261
  42. Trina-Michelle Rosado, LCPCMental Health Counselor1053977645
  43. Josannah Phoebe RosarioPhysical Therapist1801525712
  44. Catherine Rose, PAPhysician Assistant1720106560
  45. Christie Rose, LCSW-C-Clinical Social Worker1235196312
  46. James RoseMental Health Counselor1093377525
  47. Taylor Rose, PA-CPhysician Assistant1972067908
  48. Nicole Rosen, DPTPhysical Therapist1689944894
  49. Garth Rosenberg, MDVascular Surgery Physician1942262480
  50. Jessica RosenbergGastroenterology Physician1942734694

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.