NPPES file of Aug 9, 2026

Psychologist in Massachusetts

2,367 NPPES records list psychologist with a practice address in Massachusetts, 34 per 100,000 residents, the 3rd highest rate of 51. Boston and Cambridge have the most; each record links to the provider's NPI and the Massachusetts license search. Page 31 of 48.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 103T00000X · 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, 457

  1. Boston457
  2. Cambridge184
  3. Brookline98
  4. Worcester81
  5. Newton79

Psychologist records in Massachusetts

  1. Susan Nardella, PSY.D.Lunenburg, MA 014621194161398
  2. Jessica Nargiso, PH.D.Boston, MA 021141497929632
  3. Christene NarikkattuLexington, MA 024211053882761
  4. Barbara Nash, ED.D.Concord, MA 017421598385114
  5. Derek Neaz-Nibur, PSYDPittsfield, MA 012011366993933
  6. Angelica NegronSpringfield, MA 011041831707280
  7. Alexandra Nelson, PHDWeymouth, MA 021891710326962
  8. Ashley Nelson, PHDBoston, MA 021141801388400
  9. Kimberly Nelson, PHD, MPHBoston, MA 021181154172518
  10. Sarah Nelson, PHDBoston, MA 021151821517947
  11. Nicole NemerovskyBoston, MA 021141861004798
  12. Michael Nester, PHDWakefield, MA 018801922597996
  13. Caroline Nester Rooney, PHDBoston, MA 021151730816554
  14. Juliana NeuspielJamaica Plain, MA 021301871962241
  15. Charles Newfield, PH.D. BCBAMilford, MA 017571447746599
  16. Natasha Newson, PHDBoston, MA 021151033056346
  17. Li Ting Eileen Ng, PSYDWoburn, MA 018011841972106
  18. Margaret Nichols, PSYDBelmont, MA 024781396818084
  19. Joanne Nicholson, PH.D.Worcester, MA 016551811096530
  20. Yael Nillni, PH.D.Boston, MA 021301578948493
  21. Tal Nir, PH.D.Newton, MA 024591558690370
  22. Steven Nisenbaum, PHDTopsfield, MA 019831184614612
  23. Bridget NishimuraBellingham, MA 020191659928364
  24. Denise Noonan, PH.D.Waban, MA 024681902970742
  25. Andrea Norkus, ED.D.Boston, MA 021161437206612
  26. Dennis Norman, EDDBoston, MA 021141578553012
  27. Martin Norman, PHDBelmont, MA 024781598772741
  28. Edward NorrisNorthampton, MA 010601669822292
  29. Nancy Norton, ED.DSharon, MA 020671528104106
  30. David Norwood, MSW LICSW LEAPAuburn, MA 015011780754598
  31. Haruka Notsu, PHDBoston, MA 022151275479271
  32. Elana November, PSY.D.Newton Centre, MA 024591316199870
  33. Thomas Nowak, PHDWorcester, MA 016091780730531
  34. Nestor Noyola, PHDBoston, MA 021141265923064
  35. Mira Nurko, PSYDBoston, MA 021301356824288
  36. Prince NwafordBoston, MA 021241821581422
  37. Paul O'Brien, EDDMedford, MA 021551215978895
  38. William O'Brien, PSY.DWestborough, MA 015811255740254
  39. Emily O'Bryan, PH.D.Boston, MA 021151184207904
  40. Christopher O'Connell, PSY.DBoston, MA 021141295985869
  41. Mark O'Connell, PH.D.Chestnut Hill, MA 024671932364908
  42. Sydni O'Connell, LEP, NCSPWestwood, MA 020901952749277
  43. Margaret O'Connor, PH.D.Boston, MA 022151730122201
  44. Ellen O'Donnell, PH.D.Boston, MA 021141154523983
  45. Sarah O'Dor, PHDBoston, MA 021141225485592
  46. Jennifer O'Keeffe, PH.D.Lexington, MA 024211225107964
  47. Kerry O'Loughlin, PHDBoston, MA 021141730785759
  48. Kelley O'Neel, PHDPlymouth, MA 023601417062605
  49. Melissa O'Neill, PSYDSpringfield, MA 011051447693809
  50. James O'Rourke, PSY.D.Belmont, MA 024781568567261

Source: CMS NPPES, primary taxonomy 103T00000X: records by practice city and the list of records, file of Aug 9, 2026.

Massachusetts ranks 3 of 51 per resident

  1. District of Columbia49
  2. Vermont40
  3. Massachusetts34
  4. Minnesota30
  5. New York26
  6. 50 states and D.C.14

Source: CMS NPPES, primary taxonomy 103T00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

10.9% of these records appear in a Medicare file, against 10.1% 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. Massachusetts10.9%
  2. United States10.1%

Psychologist records in Massachusetts, measured

  • In a Medicare file258 of 2,367 · 10.9% here, 10.1% nationally
  • In the CMS Doctors and Clinicians file487 · 20.6% here, 18.0% nationally
  • Not updated in five years or more1,608 · 67.9% here, 63.9% nationally
  • Median graduation year1997 · the 487 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 103T00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,367 NPPES records list psychologist (103T00000X) as their primary taxonomy with a practice address in Massachusetts: 34 per 100,000 residents against 14 nationally (50 states and D.C.). Boston has 457 of them (19%).

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. Florida2,202
  2. Michigan2,549
  3. Texas2,141
  4. Pennsylvania2,687

States with a similar rate per 100,000

  1. Puerto Rico36.4
  2. Minnesota29.5
  3. Vermont40.2
  4. New York25.8

The largest states

  1. California7,304
  2. New York5,045
  3. Pennsylvania2,687
  4. Michigan2,549
  5. Florida2,202

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.