Doctors in Frederick, MD
Active healthcare providers in Frederick sourced from the CMS NPPES weekly file, no proprietary ratings, no editorial scores. NPI counts, specialty distribution, and primary practice addresses refreshed each release.
3,850 healthcare providers across 20 specialties
Frederick, Maryland appears in the CMS National Plan and Provider Enumeration System with 3,850 registered healthcare providers spanning 20 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 2023 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 (368 clinicians, followed by Clinical Social Worker with 319 and Physical Therapist with 238). 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 62.3 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.
Within Maryland, Frederick ranks #6 of 280 cities tracked by provider count, accounting for 2.5% of the state's registered providers. Of Maryland's most common specialties, Student in an Organized Health Care Education/Training Program 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, searching by specialty narrows the 690-taxonomy roster to clinicians with the relevant training, and each provider page links to NPI, state licensing boards, and the NPPES registry for credential verification. 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, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients. Nothing on this page substitutes for consulting a licensed clinician about your personal health decisions.
Which specialties are most common in Frederick
Healthcare Providers (Page 52)
| Name |
|---|
| Sarah Onderko, DPT Physical Therapist |
| Melanie Ondrejko, CRNP Acute Care Nurse Practitioner |
| Jennifer Ononiba, PMHNP Psychiatric/Mental Health Nurse Practitioner |
| Joshua Oppenheimer, M.D. Emergency Medicine Physician |
| Kayla Orcutt Behavior Technician |
| Heather Orndorff, CRNP Critical Care Neonatal Nurse Practitioner |
| Julio Orozco Professional Counselor |
| Jaeda Orr Behavior Technician |
| Lisa Ortiz Chiropractor |
| Melissa Ortiz, OTR Occupational Therapist |
| Daegan Osborne Pharmacist |
| David Osborne Pharmacist |
| Margaret Oshai, RN Continuing Education/Staff Development Registered Nurse |
| Shana Oshiro Specialist |
| Naomi Oshunwusi Behavior Technician |
| Oluwakemi Osidele, DNP, FNP-C, CRNP Nurse Practitioner |
| Said Osman, MD Orthopaedic Surgery of the Spine Physician |
| Antonio Ostrea, PT Physical Therapist |
| Andrea Oudshoorn, PTA Physical Therapy Assistant |
| Chloe Ouimette, DPT Physical Therapist |
| Isabelle Ouimette, BS Mental Health Counselor |
| Lisa Owen Pharmacist |
| Beth Owens, DIPL. AC., L. AC. Acupuncturist |
| Margaret Owens, PHD Psychologist |
| Mary Owens, MSW,ACSW,LCSW-C Clinical Social Worker |
| Stephanie Owlfeather Acupuncturist |
| Jeanette Owusu, M.D. Student in an Organized Health Care Education/Training Program |
| Leah Oxendine Family Nurse Practitioner |
| Radha Padhy, M.D. Obstetrics & Gynecology Physician |
| Marjorie Palmer, CRNP Family Nurse Practitioner |
| Alyshia Palomo Behavior Technician |
| Pratima Pandey, MD Internal Medicine Physician |
| Bobby Pandiarajan Pharmacist |
| Kaley Paniwozik, MA CCC-SLP Speech-Language Pathologist |
| Denise Pankow School Psychologist |
| Jennifer Pantoja, NP Family Nurse Practitioner |
| Ellen Pape Physical Therapist |
| Zinon Pappas, M.D. Specialist |
| Ngun Par Thang Gerontology Nurse Practitioner |
| Thomas Parambil, MD Internal Medicine Physician |
| Augusto Paredes Ubillus, FNP-C Family Nurse Practitioner |
| Erica Parekh School Psychologist |
| Lea Paris Addiction (Substance Use Disorder) Counselor |
| Aimee Park, M.D. Cardiovascular Disease Physician |
| In Park, M.D. Child & Adolescent Psychiatry Physician |
| Sarah Park, CRNP FAMILY Family Nurse Practitioner |
| Cia Parker, PSY.D. Psychologist |
| Jonathan Parker Physician Assistant |
| Siehda Parker, LCSW-C Clinical Social Worker |
| Sandra Parkinson, MD Family Medicine Physician |
Nearby Cities in Maryland
Other Maryland cities with provider coverage in the CMS NPPES registry.
Frequently Asked Questions
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Provider data from CMS NPPES (download.cms.gov/nppes); specialty classification from NUCC Health Care Provider Taxonomy. PlainDoctor does not rate or rank providers. Methodology · About
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from CMS National Plan and Provider Enumeration System (NPPES). Consult a qualified professional before making decisions based on this data.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-20.