NPPES file of Aug 9, 2026

Nurse Practitioner in Massachusetts

3,480 NPPES records list nurse practitioner with a practice address in Massachusetts, 50 per 100,000 residents, the 6th highest rate of 51. Boston and Worcester have the most; each record links to the provider's NPI and the Massachusetts license search. Page 49 of 70.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 363L00000X · 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, 961

  1. Boston961
  2. Worcester499
  3. Burlington150
  4. Fall River96
  5. Springfield58

Nurse Practitioner records in Massachusetts

  1. Cecilia O'Malley, NPJamaica Plain, MA 021301467541698
  2. Lauren O'Malley-SinghHyde Park, MA 021361346827029
  3. Anna O'Neal, CNPWorcester, MA 016041346789997
  4. Lynn O'Neal, NPWorcester, MA 016551841251261
  5. Charlene O'Reilly, NPBoston, MA 021141174059455
  6. Mary Linda O'Reilly, NPWorcester, MA 016051043271455
  7. Ellen O'Rourke, LIC. AC.Worcester, MA 016081972767135
  8. Michelle O'Rourke, NPWorcester, MA 016551073574927
  9. Nancy O'Rourke, NPWorcester, MA 016551366443418
  10. Patrice O'SullivanHyannis, MA 026011225515695
  11. Sorcha O'Sullivan-Murphy, NPWorcester, MA 016081245565829
  12. Robert Ober, NP-CBoston, MA 021141629640446
  13. Catherine Obin, ANCCWareham, MA 025711841286739
  14. Amy Oddy, NURSE PRACTITIONERBoston, MA 021181124669593
  15. Doris Odion-Ukpebor, RN, NPBoston, MA 021301619649118
  16. Jessica Odotei, NPBoston, MA 021141982239521
  17. Jennifer Odwyer, NPBoston, MA 021111942810387
  18. Lynn Oertel, RN,ANPBoston, MA 021141184774101
  19. Amaka OfonagoroCanton, MA 020211700665932
  20. Chinonye OkekeBrockton, MA 023011083209688
  21. Adetoun Okenla, FNPBoston, MA 021151740631134
  22. Matthew Okscin, NPFlorence, MA 010621760141394
  23. Alyssa Oliveira, CNPFall River, MA 027201326521584
  24. Kimberly Oliver, NPWorcester, MA 016551497088850
  25. Meghan Oliver, NPFall River, MA 027201164134904
  26. Kara Olivier, NPBoston, MA 021141932284791
  27. Glen Ollis, NPFranklin, MA 020381235641143
  28. Miguel Olmedo, DNPWorcester, MA 016041154333920
  29. Kelsey Olson, FNP-CLowell, MA 018541255141792
  30. Marsha Olson, N.P.Leominster, MA 014531184685851
  31. Monika Olsson, NPBoston, MA 021181275688053
  32. Maureen Omeara, CPNP-PCBoston, MA 021141598380974
  33. Margaret Omon-Ukpebor, CNPJamaica Plain, MA 021301962160838
  34. Chidumga Onuigbo-Oben, FNPLynn, MA 019041790924413
  35. Emily OpolskiHaverhill, MA 018301194224436
  36. Jillian Oppenheim, APRN BC FNPSalem, MA 019701679765465
  37. Jennifer OrcuttBoston, MA 021141770734501
  38. Robin Orford, NPWestford, MA 018861205802535
  39. Christina Orr, FNPBoston, MA 021141154704120
  40. Maribel Ortiz, APRNMethuen, MA 018441710055066
  41. Norma Osborn, NPBoston, MA 022151528150075
  42. Eunice OseiWebster, MA 015701396607529
  43. Melissa Osgood, FNP-BCPembroke, MA 023591952008831
  44. Rylee OsgoodHarvard, MA 014511417813890
  45. Maureen Oshea, NPBoston, MA 022151447244694
  46. Oluwatoyin OshinBoston, MA 021141407417355
  47. Janice Oskar, NURSE PRACTIONER/B.CBeverly, MA 019151215242441
  48. Katya Ostrovsky, CNPWorcester, MA 016051194881789
  49. Desiree Otenti, N.P.Boston, MA 021181194928408
  50. Adaline OteroGardner, MA 014401699373811

Source: CMS NPPES, primary taxonomy 363L00000X: records by practice city and the list of records, file of Aug 9, 2026.

Massachusetts ranks 6 of 51 per resident

  1. Delaware53
  2. South Dakota51
  3. Nebraska50
  4. Massachusetts50
  5. Kansas47
  6. Minnesota45
  7. 50 states and D.C.29

Source: CMS NPPES, primary taxonomy 363L00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

70.5% of these records appear in a Medicare file, against 73.4% 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. Massachusetts70.5%
  2. United States73.4%

Nurse Practitioner records in Massachusetts, measured

  • In a Medicare file2,454 of 3,480 · 70.5% here, 73.4% nationally
  • In the CMS Doctors and Clinicians file1,963 · 56.4% here, 57.4% nationally
  • Not updated in five years or more1,803 · 51.8% here, 44.6% nationally
  • Median graduation year2017 · the 1,963 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 363L00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

3,480 NPPES records list nurse practitioner (363L00000X) as their primary taxonomy with a practice address in Massachusetts: 50 per 100,000 residents against 29 nationally (50 states and D.C.). Boston has 961 of them (28%).

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. Michigan3,574
  2. Georgia3,109
  3. New York3,097
  4. Pennsylvania3,916

States with a similar rate per 100,000

  1. Nebraska49.9
  2. South Dakota50.6
  3. Kansas46.7
  4. Delaware52.8

The largest states

  1. Florida8,844
  2. California8,223
  3. Illinois4,892
  4. Texas4,825
  5. North Carolina4,524

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.