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 52 of 80.
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
- Faith Nguyen, CRNPNurse Practitioner1699175737
- Jessica NguyenPharmacist1801559372
- Joe Nguyen, DDS, PHDGeneral Practice Dentistry1093360604
- Jankey NiasseHome Health Aide1053103705
- Morgan NicelyBehavior Technician1912416272
- Stephen Nicewarner, CRNPEndocrinology, Diabetes & Metabolism Physician1548975253
- Amy Nicholas, MDOphthalmology Physician1407081680
- Andrew Nicholas, OTR/LOccupational Therapist1043812134
- Caroline Nichols, PTPhysical Therapist1104977149
- Chloe Nichols, NPNurse Practitioner1053654541
- Jennifer Nichols, MS, CCC-SLPSpeech-Language Pathologist1598235319
- Bryson Nicholson, M.D.Surgery Physician1356661839
- Hannah NicholsonSpeech-Language Pathologist1760057103
- Blair Nieman, DNPPediatric Nurse Practitioner1740168939
- Jennifer NimarkoNurse Practitioner1477108041
- Obed Nimoh, CPHTPharmacy Technician1386461309
- Jeffrey NinesBehavior Technician1396264412
- Corey Nininger, PTPhysical Therapist1750876603
- Frank Nisenfeld, M.D.Specialist1952371841
- La Reine NjapndounkeBehavior Technician1396549572
- Samuel NkumPharmacist1225829880
- Amy Nolde, RRTPulmonary Function Technologist Registered Respiratory Therapist1245530864
- Lewis Nordan, LCSW-CClinical Social Worker1174664924
- Jeffrie Normoyle, RDHDental Hygienist1699856427
- Stephanie Norrgard, NNP-B-C, APRNCritical Care Neonatal Nurse Practitioner1487029195
- Emily Norton, CCC-SLPSpeech-Language Pathologist1144793977
- Amber Norville, LCSW, CCFP, CIMHPClinical Social Worker1114577137
- Donald Novak, PTPhysical Therapist1720106024
- Christine Noyan-Lue, DNP, APRN, FNP-BCFamily Nurse Practitioner1912561408
- Natalia NtebohPsychiatric/Mental Health Nurse Practitioner1245182203
- Alyssa NubgaardBehavior Analyst1770195935
- Olivia NussMental Health Counselor1609550722
- Dawn NwachukwuRegistered Nurse1205191228
- Blessing Nwaneri, NPPsychiatric/Mental Health Nurse Practitioner1184272403
- Gideon Nyambiya, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1245969963
- Andrews Nyantakyi, RNRegistered Nurse1396552279
- Isabelle Nyota, NPPsychiatric/Mental Health Nurse Practitioner1417583030
- Olivia NystromBehavior Technician1104509157
- Patricia O Brien, PTPhysical Therapist1710195797
- John O'Brien, LCSW-CClinical Social Worker1700137940
- Brian O'Connor, MDMedical Oncology Physician1174515050
- Megan O'ConnorSpeech-Language Pathologist1215466388
- Nancy O'Donnell, PTPhysical Therapist1275666174
- Celia O'FallonSpeech-Language Pathologist1508334434
- Jane O'KeefeBehavior Analyst1245755446
- Kelli O'Neal, PA-CPhysician Assistant1144537184
- Avery O'NeillBehavior Technician1720944275
- James O'Neill, LCPCMental Health Counselor1356695118
- Erin O'Toole, LCPCProfessional Counselor1649741943
- Catherine OakleyPhysician Assistant1235948274
The largest Maryland cities
- Baltimore35,183
- Rockville14,353
- Bethesda7,245
- Columbia6,690
- Silver Spring6,531
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.