NPPES file of Aug 9, 2026

Doctors and health care providers in Columbia, MD

6,690 individual NPPES records list a practice address in Columbia, 4th of 284 Maryland cities. The largest group is behavior technician: 2,034, 30% of the city's records, against 16% across Maryland. Page 134 of 134.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Columbia

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Columbia in Maryland

  • Rank in Maryland4th of 284 cities by records
  • Share of the state4.2% of Maryland's records
  • Specialties present25 or more taxonomy codes
  • Top three groups47.3% of all records
  • Behavior Technician rank3rd of the 10 Maryland cities with the most

Compared with Maryland as a whole, Columbia has 7.6× the state's share of registered nurse records and 0.47× its share of occupational therapist records.

Providers in Columbia, alphabetically

  1. Victoria ZaluskiBehavior Technician1396620506
  2. Noreen ZamanRegistered Nurse1639572415
  3. Moe Zan, M.D.Rheumatology Physician1831365378
  4. Brianna ZaniBehavior Technician1598696270
  5. Renata ZanilattoBehavior Technician1508727892
  6. Sepideh Zarani, O.D.Optometrist1235418583
  7. Faramarz ZarfeshanPharmacist1043931967
  8. Mia ZarroMental Health Counselor1134094675
  9. Petrona Zavala, RNRegistered Nurse1508242728
  10. Mary Zelio, CRNP-PMHPsychiatric/Mental Health Nurse Practitioner1588901946
  11. Crystal Zell, RNRegistered Nurse1245783331
  12. Mekdelawit ZergawBehavior Technician1154005346
  13. Aurelio Zerla, MDPsychiatry Physician1881615987
  14. Julia Zeroth, PHDClinical Child & Adolescent Psychologist1881317543
  15. Angelica ZetinoBehavior Technician1003618398
  16. Jennie Zhang, D.OGastroenterology Physician1245687599
  17. Jing Zhang, M.D.Psychiatry Physician1811001258
  18. Yuanjue Zhang, MDHematology & Oncology Physician1124236286
  19. Emmy Zhao, PHARMDPharmacist1245104777
  20. Yiyun ZhouOphthalmology Physician1326501537
  21. Zhumingxin ZhuBehavior Technician1609522101
  22. Debra ZieglerPsychologist1396619664
  23. Harold Ziesat, PH.D.Clinical Psychologist1811101769
  24. Zoe Ziman, LCSW-CClinical Social Worker1427502129
  25. Daniel Zimet, PHDClinical Psychologist1699833004
  26. Margaret ZimmerBehavior Technician1598582892
  27. Deborah Zimmerman, MSPTPediatric Physical Therapist1508991738
  28. Virginia Zimmerman, PH.DClinical Psychologist1235401092
  29. Brittney Ziskind, PHDPsychologist1548519754
  30. Pamela Zisselman, C.R.N.P.Primary Care Nurse Practitioner1336133917
  31. Dieuwke Zolas, RN, CCMRegistered Nurse1619424728
  32. Constance Zou, MDPsychiatry Physician1518525450
  33. Laurette ZougaBehavior Technician1336953546
  34. Rahel Zubairi, MDSpecialist1871535088
  35. Angela ZubrodRegistered Nurse1497184964
  36. Bisma Zulfiqar, MDFamily Medicine Physician1538510375
  37. Nicole ZunigaBehavior Technician1053875450
  38. Yahaira Zupkusky, RDH, CRDHDental Hygienist1003794355
  39. Cheryl Zwart, PH.D.Clinical Psychologist1922163591
  40. Anne Marie Zwycewicz, PH.D.Psychologist1457987828

The largest Maryland cities

  1. Baltimore35,183
  2. Rockville14,353
  3. Bethesda7,245
  4. Silver Spring6,531
  5. Frederick3,981

All of Maryland →

How to read this directory

Columbia, Maryland appears in the CMS National Plan and Provider Enumeration System with 6,690 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 Columbia - 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 Columbia 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 Columbia is weighted toward Behavior Technician (2,034 clinicians, followed by Registered Nurse with 783 and Clinical Social Worker with 346). 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, Columbia reports roughly 108.2 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 Columbia practice address, a coverage gap Columbia patients typically fill by traveling to a larger nearby hub.

For Columbia 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 Columbia, MD?

There are 6,690 registered healthcare providers in Columbia, MD, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Columbia?

The most common specialties in Columbia are Behavior Technician, Registered Nurse, Clinical Social Worker, Behavior Analyst, Physical Therapist. Behavior Technician has the most providers with 2,034.

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.