NPPES file of Aug 9, 2026

Physician Assistant in Massachusetts

4,713 NPPES records list physician assistant with a practice address in Massachusetts, 67 per 100,000 residents, the 12th highest rate of 51. Boston and Worcester have the most; each record links to the provider's NPI and the Massachusetts license search. Page 35 of 95.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 363A00000X · 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, 1,660

  1. Boston1,660
  2. Worcester425
  3. Springfield172
  4. Burlington154
  5. Cambridge99

Physician Assistant records in Massachusetts

  1. Julie Grassi, P.A.-CBoston, MA 021151952762486
  2. Alexandra Grasso, PA-CBrockton, MA 023021366034886
  3. Amanda Grasso, PA-CBoston, MA 021151386202281
  4. Gianna Grasso, PA-CNorth Andover, MA 018451326779596
  5. Jessica Grasso, PA-CBoston, MA 021141841846284
  6. Victoria Grasso, PA-CBoston, MA 021151740950021
  7. Elizabeth Graves-WitherellNewton Centre, MA 024591619119815
  8. Morgan Gravlin, PABoston, MA 021151174918296
  9. Haley Gray, PA-CBoston, MA 021111942955174
  10. Jonathan Gray, PA-CBoston, MA 021141083887541
  11. Mary Ellen Gray, PABurlington, MA 018051437208816
  12. Stephanie GrayBoston, MA 021151912541996
  13. Madeleine Graziano, PA-CBoston, MA 022151649166588
  14. Andrea Grealish, PABurlington, MA 018051144379454
  15. Lindsey Grealish, PA-CChestnut Hill, MA 024671952612434
  16. Daniel Greel, PABurlington, MA 018051124435318
  17. Catherine GreenRaynham, MA 027671063829620
  18. Krysta Green, P.A.Brockton, MA 023011982023107
  19. Nicole Green, PA-CBoston, MA 021161346297256
  20. Marianne GreeneBoston, MA 022411710706155
  21. Bryna Greenspan, PANorth Adams, MA 012471811966039
  22. Cheryl Greenstein, P.ASpringfield, MA 011991467541060
  23. Michelle Greer, PA-CBoston, MA 021151144579723
  24. Roman Greer, PABoston, MA 022151245687144
  25. Hayley Grelson, PA-CBoston, MA 021151174169700
  26. Cassidy GriecoBoston, MA 022151306428941
  27. Cassidy GriffinDorchester, MA 021221477170223
  28. Matthew Griffin, PA-CPembroke, MA 023591225649049
  29. Michele Griffin, PABurlington, MA 018051538219191
  30. Alexandra Griffith, PA-CBoston, MA 021151336797240
  31. Emily Griffith, PA-CLynn, MA 019011558074344
  32. Kimberly Grill, PAWorcester, MA 016061164032629
  33. Klaus GrimMelrose, MA 021761366919110
  34. Robin Grimes, PHYSICIAN ASSISTANTConcord, MA 017421508088543
  35. Timothy Grinnell, PA-CWaltham, MA 024511790828119
  36. Aaron Grinstein, PAEasthampton, MA 010271457762106
  37. James Grogan, PA-CWorcester, MA 016551093332025
  38. Christine Gross, PA-CSalem, MA 019701740428440
  39. Joanna Gross, PA-CBrighton, MA 021351023260981
  40. Sara Grosslein, PABoston, MA 021141003486499
  41. Robert Grueter, PA-CWeymouth, MA 021901538606025
  42. Dana Guarino, PA-CPeabody, MA 019601720319924
  43. Joseph Guarino, PA-CReading, MA 018671982215877
  44. Jennifer Guertin, PA-CWorcester, MA 016051346471521
  45. Gail GuidiceBoston, MA 021151740064443
  46. Matthew Guido, PA-CBoston, MA 021141063917763
  47. Janet Guilfoyle, PA-CEverett, MA 021491588682306
  48. Ryan Gulla, PA-CNatick, MA 017601396212072
  49. Amy-Lyn Gumprecht, P.A.Greenfield, MA 013011558377093
  50. Johnathan Gunn, PA-CBuzzards Bay, MA 025421255832069

Source: CMS NPPES, primary taxonomy 363A00000X: records by practice city and the list of records, file of Aug 9, 2026.

Massachusetts ranks 12 of 51 per resident

  1. Nebraska68
  2. New Hampshire68
  3. Delaware67
  4. Massachusetts67
  5. West Virginia65
  6. Colorado64
  7. 50 states and D.C.49

Source: CMS NPPES, primary taxonomy 363A00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

77.6% of these records appear in a Medicare file, against 77.9% 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. Massachusetts77.6%
  2. United States77.9%

Physician Assistant records in Massachusetts, measured

  • In a Medicare file3,659 of 4,713 · 77.6% here, 77.9% nationally
  • In the CMS Doctors and Clinicians file3,220 · 68.3% here, 62.6% nationally
  • Not updated in five years or more1,780 · 37.8% here, 39.3% nationally
  • Median graduation year2019 · the 3,217 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 363A00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

4,713 NPPES records list physician assistant (363A00000X) as their primary taxonomy with a practice address in Massachusetts: 67 per 100,000 residents against 49 nationally (50 states and D.C.). Boston has 1,660 of them (35%).

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. Georgia4,662
  2. Illinois4,926
  3. Virginia4,408
  4. Ohio5,325

States with a similar rate per 100,000

  1. Delaware67.4
  2. New Hampshire67.5
  3. Nebraska68.3
  4. Michigan69.6

The largest states

  1. New York15,555
  2. California14,451
  3. Texas10,999
  4. Florida10,257
  5. North Carolina9,279

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.