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 80 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
- Jessica ZambrenyCounselor1740099050
- Myla Zamora, P.T.Physical Therapist1487993077
- John Zapas, M.D.Surgery Physician1487613022
- Taylor ZaranskiPhysical Therapist1841014123
- Kiarash Zarbalian, MDEndocrinology, Diabetes & Metabolism Physician1467587063
- Arash Zarrin, DOGastroenterology Physician1407351729
- Lauren Zaryk, DPTPhysical Therapist1407259666
- Melissa Zatz, LCSW-CClinical Social Worker1790927986
- Deborah Zayas, APRN, FNPFamily Nurse Practitioner1982891073
- James Zazanis, LCSW-CClinical Social Worker1659048833
- Monica Zeballos, PHARM.D.Pharmacist1700174018
- Lisa Zecher, LCSW-CClinical Social Worker1255495305
- Christina Zeilberger, M.D.Pediatrics Physician1922397306
- Cynthia Zeller, CRNPNurse Practitioner1093744831
- Gabrielle Zeller, OTOccupational Therapist1417883463
- Amanda Zellner, RNRegistered Nurse1205659604
- Deborah ZemedeRegistered Dietitian1821949231
- Kimberly Zeren, CRNP- FAMILYFamily Nurse Practitioner1003813072
- Patricia Zetkulic, LCPCCounselor1548968589
- Dulat Zhandossov, DPTPhysical Therapist1477851434
- Mahsa ZiashakeriOrthodontics and Dentofacial Orthopedics Dentistry1225804404
- Louisa Ziglar, MDRheumatology Physician1538336151
- Katumu ZinnahClinical Social Worker1558072298
- Rachel Zirlin, MS, CCC-SLPSpeech-Language Pathologist1184083529
- Kimberly Zisman, RDN,LDNRegistered Dietitian1417768763
- Olivia Zucco, M.A., B.C.B.A.Behavior Analyst1366717332
- Salam Zughayer, DONeurology Physician1205950045
- Cassandra Zurbuch, PT, DPTPhysical Therapist1437172632
- Keith Zurbuch, PTPhysical Therapist1437321825
- Garrit Zwakenberg, PTAPhysical Therapy Assistant1447624788
- Jack ZygmuntPhysical Therapist1053334656
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.