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 59 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. Laura O'ConnorCounselor1568719193
  2. Timothy O'Farrell, PH.D.Family Psychologist1962590091
  3. Meaghen O'FlahertyOccupational Therapist1215435664
  4. Ryan O'Gowan, PA-CPhysician Assistant1184659385
  5. John O'Hara, M.D.Anesthesiology Physician1326303124
  6. Brielyn O'LearySpeech-Language Pathologist1689023673
  7. Kelly O'Malley, PH.D.Clinical Psychologist1912551276
  8. Samantha O'MalleyBehavior Analyst1356952378
  9. Connor O'NealSocial Worker1134804883
  10. Laura O'NealMental Health Counselor1538331020
  11. Nicole O'Neil, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1487092102
  12. Cassidy O'Neill, MDStudent in an Organized Health Care Education/Training Program1316735996
  13. James O'Neill, D.O.Emergency Medicine Physician1871029645
  14. Julie O'NeillClinical Social Worker1457042087
  15. Erin O'Regan, MS CCC SLPSpeech-Language Pathologist1124509583
  16. Ryan O'Shaughnessy, PA-CPhysician Assistant1710331095
  17. Dillion O'SheaAddiction (Substance Use Disorder) Counselor1174000350
  18. Kelsey O'SheaSpeech-Language Assistant1699101493
  19. Patricia O'Shea, RNPAdult Health Nurse Practitioner1912948027
  20. Tara O'SheaRegistered Nurse1457516130
  21. Samantha O'Toole, MSBehavior Analyst1760009336
  22. Brittany ObiBehavior Technician1396311817
  23. Peter Obour-Mensah, LICSWClinical Social Worker1821726944
  24. Nicole Obrien, DSSpecialist1699037234
  25. Aengus Oconghaile, MB BCH BAOStudent in an Organized Health Care Education/Training Program1770913774
  26. Omorovbiye Odigie, PAPhysician Assistant1215122478
  27. Toyin OdogunBehavior Technician1649082777
  28. Eileen Odonnell, CRNACertified Registered Nurse Anesthetist1346586690
  29. Christiana Odunze, NURSE PRACTITIONERGerontology Nurse Practitioner1366288326
  30. Thomas Ogbu, NP-CPrimary Care Nurse Practitioner1124551387
  31. Chioma Ogunedo, NPFamily Nurse Practitioner1750660338
  32. Steven Oh, MDDiagnostic Radiology Physician1033161385
  33. Cajetan Ohaya, PROVIDERLicensed Practical Nurse1336897008
  34. Theresa Ohrenberger, BSNRegistered Nurse1578691317
  35. Aderinola Ojengbede, MDInternal Medicine Physician1730218785
  36. Ugwa OjiSocial Worker1437640117
  37. Chinonye OkekeNurse Practitioner1083209688
  38. Obioma OkekePsychiatric/Mental Health Nurse Practitioner1558064659
  39. Pamela Oldenburg, MAEDMental Health Counselor1750734547
  40. Janis Oliveira, LCSWClinical Social Worker1710604871
  41. Jernice Oliveira, MASSAGE THERAPISTMassage Therapist1780438663
  42. Susan Oliveira, CRNACertified Registered Nurse Anesthetist1467596429
  43. Jeffrey OlivierClinical Social Worker1215622485
  44. Ndia OlivierClinical Social Worker1861159196
  45. William Olson, ODOptometrist1427029875
  46. Joshua OmanCase Manager/Care Coordinator1205727195
  47. Daniel Omoayo, LCSWSocial Worker1912942202
  48. Grace Omoregie-EdewiPsychiatric/Mental Health Nurse Practitioner1568190957
  49. Joseph OmwataMedical-Surgical Registered Nurse1033033758
  50. Adeyemi Onayemi, RPHPharmacist1255652848

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.