NPPES file of Aug 9, 2026

Clinical Social Worker in Massachusetts

17,815 NPPES records list clinical social worker with a practice address in Massachusetts, 254 per 100,000 residents, the 3rd highest rate of 51. Boston and Springfield have the most; each record links to the provider's NPI and the Massachusetts license search. Page 242 of 357.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 1041C0700X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Boston has the most, 1,906

  1. Boston1,906
  2. Springfield624
  3. Worcester611
  4. Cambridge545
  5. Brookline393

Clinical Social Worker records in Massachusetts

  1. Molly O'NeilDorchester, MA 021221811489768
  2. Shannon O'NeilSpringfield, MA 011041659928760
  3. Susan O'Neil, LICSWLowell, MA 018521265470124
  4. Taryn O'NeilSouth Weymouth, MA 021901093597718
  5. Chesney O'NeillFramingham, MA 017021336741651
  6. Elizabeth O'NeillSwansea, MA 027771770136897
  7. Emily O'Neill, MSWBrookline, MA 024451235966268
  8. John O'Neill, MSW, LICSWWest Springfield, MA 010891336421395
  9. Julie O'NeillBrockton, MA 023011457042087
  10. Margaret O'Neill, LCSWGloucester, MA 019301417064692
  11. Michele O'Neill, LICSWWilbraham, MA 010951750715579
  12. Stephen O'Neill, LICSW, JDBoston, MA 022151477592483
  13. Tegan O'Neill, LICSWRoxbury, MA 021191740785500
  14. Ashley O'NiellFramingham, MA 017021841768074
  15. Maura O'RahillyDuxbury, MA 023321720557812
  16. Maureen O'Regan, LICSWOrleans, MA 026531386795359
  17. Caitlin O'Reilly, LICSWBoston, MA 021151194046458
  18. Emily O'Reilly, LICSWBoston, MA 021181790278737
  19. Lianne O'ReillyBoston, MA 021161386373439
  20. Christopher O'Rourke, LICSWBoston, MA 022151093852782
  21. Jane O'Rourke, MSWLincoln, MA 017731902036080
  22. Julie O'Rourke, LICSWDedham, MA 020261952885535
  23. Lauren O'Rourke, LCSWJamaica Plain, MA 021301235541830
  24. Tessa O'Rourke, LCSWBoston, MA 021151265230411
  25. Andrea O'Rourke-Friel, LICSWBelmont, MA 024781699842294
  26. Brianne O'Shea, LICSWBoston, MA 021151124880885
  27. Brian O'Sullivan, LICSWMalden, MA 021481285788695
  28. Fiona O'Sullivan, MSWPittsfield, MA 012011356127120
  29. Hayley O'Sullivan, LCSWLawrence, MA 018431407186059
  30. Julianne O'Sullivan, LCSWWest Bridgewater, MA 023791194468595
  31. Samantha O'Sullivan, LICSWFoxboro, MA 020351124573159
  32. Rachael O'Toole, LICSWWestford, MA 018861285176115
  33. Robyn O'Toole, LICSWWorcester, MA 016041326381138
  34. Terri O'TooleNorthampton, MA 010621770072480
  35. Vanessa O'Toole, LICSWPlymouth, MA 023601154754687
  36. Kristina O'Toole-Montgomery, LCSWLawrence, MA 018431023408226
  37. Kelsey Oakes, LICSWSomerville, MA 021441912506395
  38. Shelly Oakes, LICSWBraintree, MA 021841548413974
  39. Kaleb Oakleaf, LICSWStoneham, MA 021801023625456
  40. Timothy Oaks, LCSWHadley, MA 010351699986414
  41. Nessa Oates, LCSWBoston, MA 021111922797802
  42. Lois ObengMilton, MA 021861124982509
  43. Jana Oberheu, LICSWChelsea, MA 021501447864319
  44. Gail OberstNorth Adams, MA 012471427328822
  45. Megan OberstLynn, MA 019011376195115
  46. Peter Obour-Mensah, LICSWBrockton, MA 023011821726944
  47. Edward Obrien, LICSWTaunton, MA 027801902195290
  48. Erin Obrien, MSWStockbridge, MA 012621851501241
  49. Kimberly Obrien, PHD, LICSWWalpole, MA 020811275694309
  50. Marianne Obrien, LICSWWrentham, MA 020931407351943

Source: CMS NPPES, primary taxonomy 1041C0700X: records by practice city and the list of records, file of Aug 9, 2026.

Massachusetts ranks 3 of 51 per resident

  1. District of Columbia283
  2. Maine263
  3. Massachusetts254
  4. Rhode Island222
  5. Connecticut214
  6. 50 states and D.C.93

Source: CMS NPPES, primary taxonomy 1041C0700X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

8.4% of these records appear in a Medicare file, against 11.7% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Massachusetts8.4%
  2. United States11.7%

Clinical Social Worker records in Massachusetts, measured

  • In a Medicare file1,497 of 17,815 · 8.4% here, 11.7% nationally
  • In the CMS Doctors and Clinicians file3,060 · 17.2% here, 19.1% nationally
  • Not updated in five years or more12,111 · 68.0% here, 52.9% nationally
  • Median graduation year2004 · the 3,059 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 1041C0700X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

17,815 NPPES records list clinical social worker (1041C0700X) as their primary taxonomy with a practice address in Massachusetts: 254 per 100,000 residents against 93 nationally (50 states and D.C.). Boston has 1,906 of them (11%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. Michigan17,644
  2. North Carolina15,561
  3. Illinois13,637
  4. Florida13,458

States with a similar rate per 100,000

  1. Maine263.2
  2. District of Columbia282.9
  3. Rhode Island222.5
  4. Connecticut213.7

The largest states

  1. California36,261
  2. New York29,293
  3. Michigan17,644
  4. North Carolina15,561
  5. Illinois13,637

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

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.