NPPES file of Aug 9, 2026

Doctors and health care providers in Brockton, MA

4,287 individual NPPES records list a practice address in Brockton, 5th of 406 Massachusetts cities. The largest group is mental health counselor: 498, 12% of the city's records, against 8% across Massachusetts. Page 60 of 86.

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

The 8 largest groups in Brockton

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

Brockton in Massachusetts

  • Rank in Massachusetts5th of 406 cities by records
  • Share of the state2% of Massachusetts's records
  • Specialties present25 or more taxonomy codes
  • Top three groups26.6% of all records
  • Mental Health Counselor rank5th of the 10 Massachusetts cities with the most

Compared with Massachusetts as a whole, Brockton has 4.3× the state's share of specialist records and 0.50× its share of physical therapist records.

Providers in Brockton, alphabetically

  1. Ann Cathrine Ong, DMDGeneral Practice Dentistry1013768621
  2. Luei Ong, M.D.Family Medicine Physician1841670536
  3. Esther Onochie, MSNAdministrator Registered Nurse1851023832
  4. Caroline Onuegbu, LPNLicensed Practical Nurse1053061622
  5. Oyere Onuma, M.D.Cardiovascular Disease Physician1760687339
  6. Ernest OnyinahCritical Care Pharmacist1922932615
  7. Ezedi OputaSocial Worker1972002194
  8. Austin Oriakhi, LPNLicensed Practical Nurse1861631368
  9. Angela Orlandi, MAMental Health Counselor1770645798
  10. Nicole Orlando, DSSpecialist1922669621
  11. Stacey Orpen, LICSWClinical Social Worker1346574019
  12. Kelsey Orpin, PT, DPTPhysical Therapist1790448074
  13. Jessica OrrStudent in an Organized Health Care Education/Training Program1841637121
  14. Samantha Orth, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1700269032
  15. Alba OrtizMental Health Counselor1326429200
  16. Luis Ortiz, M.D.Emergency Medicine Physician1063447415
  17. Sharier Ortiz, MSMental Health Counselor1427703685
  18. Celso Ortiz CabreraCounselor1386300291
  19. Carissa OrtmanSocial Worker1861827529
  20. Pamela OsaighaleFamily Nurse Practitioner1922931161
  21. David Osayande, MDVascular & Interventional Radiology Physician1053973297
  22. Erin Osborne, DSSpeech-Language Pathologist1942720784
  23. Sean Osborne, PAPhysician Assistant1073977823
  24. Olga Osokina, M.D.Psychiatry Physician1114949195
  25. David Osser, MDPsychiatry Physician1700852779
  26. Mohamad Ossiani, MDDiagnostic Radiology Physician1902867336
  27. Mary OstranderSpecialist1306900055
  28. Christina Otis, APRN, MSN, FNP-CNurse Practitioner1679252795
  29. Sarah OtisStudent in an Organized Health Care Education/Training Program1649796723
  30. Alana Ounan, LCSWClinical Social Worker1346966389
  31. Jennifer Oung Mathurin, NPPsychiatric/Mental Health Nurse Practitioner1073148540
  32. Joseph OwadCounselor1346634102
  33. Michael Owen, M.D.Emergency Medicine Physician1881032894
  34. Barbara Owens, M.S.Case Manager/Care Coordinator1568724573
  35. Kristen OwensCounselor1508017518
  36. Beth Owings, B.S.Addiction (Substance Use Disorder) Counselor1417406521
  37. Kerri OxnerStudent in an Organized Health Care Education/Training Program1063718120
  38. Marcella Oyadiji, MSWSocial Worker1629905195
  39. Corinna Oyer, BASpecialist1396875845
  40. Frantz OzileCounselor1982420279
  41. Nduka OzulumbaRegistered Nurse1730007824
  42. Koralys Ozuna, MSMental Health Counselor1194475988
  43. Brandi PaceDevelopmental Therapist1861091647
  44. Gary Pace, PH.DPsychologist1912172990
  45. Gabriela PachecoClinical Child & Adolescent Psychologist1649638669
  46. Katherine Pacheco, NPNurse Practitioner1821025719
  47. Rachel PachecoMental Health Counselor1598014185
  48. George Padilla, MDStudent in an Organized Health Care Education/Training Program1568216943
  49. Samantha PadillaMental Health Counselor1710200167
  50. Joan Padrenoss, PTAPhysical Therapy Assistant1962909911

The largest Massachusetts cities

  1. Boston41,865
  2. Worcester13,166
  3. Springfield8,553
  4. Cambridge5,145
  5. Milford3,459

All of Massachusetts →

How to read this directory

Brockton, Massachusetts appears in the CMS National Plan and Provider Enumeration System with 4,287 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 Brockton - 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 Brockton 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 Brockton is weighted toward Mental Health Counselor (498 clinicians, followed by Clinical Social Worker with 380 and Behavior Technician with 261). 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 Massachusetts's population, Brockton reports roughly 61.2 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 Massachusetts's most common specialties, Developmental Therapist is the most prominent one with no provider currently listing a Brockton practice address, a coverage gap Brockton patients typically fill by traveling to a larger nearby hub.

For Brockton 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 Brockton, MA?

There are 4,287 registered healthcare providers in Brockton, MA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Brockton?

The most common specialties in Brockton are Mental Health Counselor, Clinical Social Worker, Behavior Technician, Student in an Organized Health Care Education/Training Program, Addiction (Substance Use Disorder) Counselor. Mental Health Counselor has the most providers with 498.

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.