NPPES file of Aug 9, 2026

Psychiatry Physician in Massachusetts

2,736 NPPES records list psychiatry physician with a practice address in Massachusetts, 39 per 100,000 residents, the 2nd highest rate of 51. Boston and Cambridge have the most; each record links to the provider's NPI and the Massachusetts license search. Page 37 of 55.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2084P0800X · 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, 845

  1. Boston845
  2. Cambridge213
  3. Belmont151
  4. Worcester133
  5. Brookline117

Psychiatry Physician records in Massachusetts

  1. Simone Obara, MDBoston, MA 022151508360512
  2. Mohamad Och, M.D.Worcester, MA 016051629098496
  3. Olivia Okereke, MDBoston, MA 021141457332637
  4. Ebele Okpokwasili-Johnson, M.D.Boston, MA 021291528194941
  5. Adeolu Oladunjoye, MDBoston, MA 021141629658703
  6. William OlcottMiddleboro, MA 023461114414828
  7. Sean OldakBoston, MA 021151104486372
  8. David Olds, M.D.Great Barrington, MA 012301801951736
  9. Jacqueline Olds, MDCambridge, MA 021401336139054
  10. Adeliza Olivero, MDBoston, MA 021181013238682
  11. Anne Ollen-Smith, MDBoston, MA 021181255482998
  12. David Olson, M.D.Worcester, MA 016551982687679
  13. Rozan Omdah, M.D.Boston, MA 021111326276841
  14. Sarah Oneil, MDNewton Centre, MA 024591700876885
  15. Dost Ongur, M.D., PH.D.Belmont, MA 024781740267392
  16. Alex Orlikov, M.D., PH.DNewton, MA 024621528172426
  17. Peter Orlov, M.D.Woburn, MA 018011477550754
  18. Kleopatra Ormos, MDFalmouth, MA 025401932203205
  19. Miriam Lilla Ornstein, M.D.Cambridge, MA 021391104873892
  20. Rafael Ornstein, MDBrookline, MA 024461083688774
  21. Lawrence Osborn, MDEasthampton, MA 010271164510905
  22. Terry Osborne, D.O.Fitchburg, MA 014201811194913
  23. Olga Osokina, M.D.Brockton, MA 023011114949195
  24. David Osser, MDBrockton, MA 023011700852779
  25. Michael Ostacher, MDBoston, MA 021141093789083
  26. Janet Osterman, MDQuincy, MA 021691689613770
  27. Britta Ostermeyer, M.D.Springfield, MA 011071376652214
  28. Louis OstrowskyCambridge, MA 021391306135082
  29. Ariel Otero, M.D.Cambridge, MA 021401295953867
  30. Sally Ourieff, M.D.Wayland, MA 017781013964709
  31. Simon Ovanessian, MDWestborough, MA 015811376585091
  32. Micaela Owusu, MDBoston, MA 021181770921850
  33. Gregory Oxenkrug, M.D.Newton, MA 024591891805073
  34. Jacob Oyer, M.D.Amherst, MA 010031376961235
  35. Timothy Pace, M.D.Jamaica Plain, MA 021301538101639
  36. Auralyd Padilla, M.D.Worcester, MA 016061932420692
  37. Jaya Padmanabhan, MDBoston, MA 022151104141639
  38. Kambiz Pahlavan, M.D.Worcester, MA 016061235103375
  39. Marcelo Pakman, M.D.Springfield, MA 011031659463818
  40. Christopher Palacios, M.D.Attleboro, MA 027031932250172
  41. Allen Palmer, M.D.Newton Highlands, MA 024611740328707
  42. Christopher Palmer, M.D.Belmont, MA 024781134167414
  43. Jonathan Palmer, M.D.Newton, MA 024591588795520
  44. Nina Palmer, M.D.Wellesley, MA 024811912920216
  45. Valerie Palms, MDCambridge, MA 021381669585436
  46. Robert Palombo, MDAndovor, MA 018101225104607
  47. Suvasini Pandit, M.D.South Attleboro, MA 027031467497180
  48. Frank Paolitto, M.D.North Easton, MA 023561942253455
  49. George Papakostas, MDBoston, MA 021141588654131
  50. Arthur Papas, MDWeston, MA 024931508857277

Source: CMS NPPES, primary taxonomy 2084P0800X: records by practice city and the list of records, file of Aug 9, 2026.

Massachusetts ranks 2 of 51 per resident

  1. District of Columbia70
  2. Massachusetts39
  3. Rhode Island35
  4. New York34
  5. 50 states and D.C.17

Source: CMS NPPES, primary taxonomy 2084P0800X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

65.4% of these records appear in a Medicare file, against 68.5% 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. Massachusetts65.4%
  2. United States68.5%

Psychiatry Physician records in Massachusetts, measured

  • In a Medicare file1,788 of 2,736 · 65.4% here, 68.5% nationally
  • In the CMS Doctors and Clinicians file1,220 · 44.6% here, 42.4% nationally
  • Not updated in five years or more1,685 · 61.6% here, 56.2% nationally
  • Median graduation year2005 · the 1,219 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2084P0800X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,736 NPPES records list psychiatry physician (2084P0800X) as their primary taxonomy with a practice address in Massachusetts: 39 per 100,000 residents against 17 nationally (50 states and D.C.). Boston has 845 of them (31%).

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. Florida2,744
  2. Pennsylvania2,662
  3. Texas3,318
  4. Illinois2,147

States with a similar rate per 100,000

  1. Rhode Island34.9
  2. New York33.7
  3. Connecticut32.5
  4. Vermont31.4

The largest states

  1. California8,673
  2. New York6,589
  3. Texas3,318
  4. Florida2,744
  5. Pennsylvania2,662

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.