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 56 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. Victor Peng, DOSleep Medicine (Internal Medicine) Physician1508357021
  2. Ella PennyBehavior Technician1861341489
  3. Monica Pentony, PSYDClinical Psychologist1386876811
  4. Michael Pepper, MDEmergency Medicine Physician1184676256
  5. Ashley Pereira, LMSWSocial Worker1336065002
  6. Miguel Pereyra OrozcoPhysical Therapist1447985221
  7. Daraven Perez, PT, DPT, CSCSPhysical Therapist1669398871
  8. Rosa Mirian Perez-MontoyaPersonal Care Attendant1487515102
  9. Jennifer PerezchicaBehavior Analyst1134887409
  10. Janelle Perfetto, DPTPhysical Therapist1912492703
  11. Louis Perraut, MDOphthalmology Physician1497832000
  12. Michelle PerretPharmacist1609477314
  13. Elizabeth Perry, LGPCMental Health Counselor1003374281
  14. Kaitlyn PersicoSchool Psychologist1598575813
  15. Kent Perttula, NPNurse Practitioner1003668138
  16. Michael Pesin, D.D.S.General Practice Dentistry1457440174
  17. Gayatri PestonjeeCertified Registered Nurse Anesthetist1235475674
  18. Samantha Petela, OTR/LPediatric Occupational Therapist1699486688
  19. Judy Peters, CCC-SLPSpeech-Language Pathologist1669646600
  20. Lori Peters, CRNPNurse Practitioner1114934684
  21. Amanda PetersonBehavior Technician1346061512
  22. Analeta Peterson, M.D.Obstetrics & Gynecology Physician1083933162
  23. Anna Peterson, LCSW-CMental Health Counselor1255408563
  24. Lindsey Peterson, PHDPsychologist1104527019
  25. Nico PetrettaBehavior Technician1700568235
  26. Heather Petro, LCPCProfessional Counselor1619475647
  27. Elizabeth Petrolle, LCSW-CClinical Social Worker1417152273
  28. Alberta Peugeot, ARNP-COccupational Health Nurse Practitioner1558403345
  29. Leah PfisterPhysical Medicine & Rehabilitation Physician1811461643
  30. Jeannie Pham, MDChild & Adolescent Psychiatry Physician1720271430
  31. Karen Pheasant, DOEmergency Medicine Physician1992911788
  32. Debra PhebusMental Health Counselor1184176943
  33. Amanda Phelan, LCSW-CClinical Social Worker1518218445
  34. Melanie PhelanBehavior Technician1487223012
  35. Jayme Phelps, APRNFamily Nurse Practitioner1104689447
  36. Sydni Phelps, SLPSpeech-Language Pathologist1659153054
  37. Hamblin PhillipsClinical Social Worker1740750983
  38. Todd PhillipsPhysical Therapist1255746020
  39. Michele Phulsuksombati, MS, MED,RDRegistered Dietitian1386014819
  40. Yechen PiEmergency Medicine Physician1164865523
  41. John Piacentino, MDInternal Medicine Physician1114936895
  42. Wray Pianta, MMSC PTOrthopedic Physical Therapist1932205424
  43. Brian PickMassage Therapist1588110696
  44. Marijo Pickett, PTAPhysical Therapy Assistant1023396116
  45. Naomi PickettBehavior Technician1174355200
  46. Erin Picotte, CRNPPediatric Nurse Practitioner1750798401
  47. Sharon Pieczenik, LCSW-CClinical Social Worker1588394092
  48. Nicole Piekarski, LGPCCounselor1487475117
  49. Martha Pierce, M.D.Specialist1295716827
  50. Jennifer PierreMassage Therapist1518823475

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.