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 111 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. Shante ShorterBehavior Technician1902383060
  2. Samantha ShraderBehavior Technician1972208510
  3. Mona Shroff, O.D.Optometrist1912229865
  4. Robert Shroyer, MDDiagnostic Radiology Physician1386910370
  5. Christopher Shubert, MDSurgery Physician1164717559
  6. Ashleigh ShugarsPsychiatric/Mental Health Nurse Practitioner1063237626
  7. Brooke ShullBehavior Technician1376212134
  8. Ralph Shumake, P.D.Nutrition Support Pharmacist1619235181
  9. Nicole ShuronBehavior Technician1053245647
  10. Jeri Shuster, M.D.Gynecology Physician1487644894
  11. Adrienne Shutt, LCSW-CClinical Social Worker1457624462
  12. Alarie ShyllonBehavior Technician1043055106
  13. Joseph SiakamLicensed Practical Nurse1689036170
  14. Sandeep Sidana, M.D.Psychosomatic Medicine Physician1346409091
  15. Afsheen SiddiquiInternal Medicine Physician1205366911
  16. Barbara Siddle, PHDPsychologist1952422131
  17. Hema Sidhu, PH.D., RPSGT, RSTOther Specialist/Technologist1497162853
  18. Gabriela Siegel, M.D.Family Medicine Physician1518499730
  19. Clelia Sigaud, PSY.DStudent in an Organized Health Care Education/Training Program1881219814
  20. Adejoke Sijuwade, CRNP-FAMILYFamily Nurse Practitioner1811274632
  21. Tasmiyah SikdarBehavior Technician1881541274
  22. Bohne Silber, M.D.Psychologist1063763423
  23. Glenn Silber, MDAllergy & Immunology Physician1659315570
  24. Joanne Silbert-Flagg, C.R.N.P.Pediatric Nurse Practitioner1306872148
  25. Richard Silver, MDPsychiatry Physician1851326383
  26. Jack Silverman, D.D.S.General Practice Dentistry1013090976
  27. Michael Silverman, MDSpecialist1255309977
  28. Sharon Silverman, M.D.Internal Medicine Physician1144296328
  29. Nataliya SimakAcupuncturist1902227051
  30. Kamron SimmonsBehavior Technician1982557849
  31. Leah SimmonsBehavior Analyst1619562048
  32. Gereka SimmsBehavior Technician1952985327
  33. Kathrine SimmsMental Health Counselor1194912584
  34. Rachel Simms, PSY.D., L.C.P.CPsychologist1376910851
  35. Alexander SimonBehavior Technician1184394546
  36. Dawn SimonClinical Social Worker1891171740
  37. Maren Simons, PA-CPhysician Assistant1609955806
  38. Noah SimonsBehavior Technician1053111815
  39. Denashaja Simpkins, BEHAVIOR TECHNICIANBehavior Technician1467345363
  40. Ronnea SimpkinsBehavior Technician1003702226
  41. Syntia SimpkinsBehavior Technician1861090409
  42. Gaynell Simpson, LCSW-CClinical Social Worker1962611855
  43. Kathryn Simpson, RN, BSNRegistered Nurse1023567443
  44. Kelly SimpsonBehavior Technician1922999341
  45. Vontrese Simpson, APRNWomen's Health Nurse Practitioner1275077372
  46. Anthony Sims, DDSDentist1336485903
  47. Cheryl SimsBehavior Technician1942018411
  48. Rachel SimsBehavior Technician1518826197
  49. Sara Sims, P.T.Physical Therapist1235559899
  50. Tijnae SinclairBehavior Technician1740026566

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.