NPPES file of Aug 9, 2026

Registered Dietitian in Massachusetts

2,244 NPPES records list registered dietitian with a practice address in Massachusetts, 32 per 100,000 residents, the 5th highest rate of 51. Boston and Worcester have the most; each record links to the provider's NPI and the Massachusetts license search. Page 31 of 45.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 133V00000X · 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, 411

  1. Boston411
  2. Worcester99
  3. Cambridge69
  4. Brockton56
  5. Springfield50

Registered Dietitian records in Massachusetts

  1. Bethany Nelson, RD, LDNLeominster, MA 014531831692524
  2. Marcia Nelson, RD, LDNHingham, MA 020431548692007
  3. Marianne NelsonNorth Adams, MA 012471487037420
  4. Stacey Nelson, M.S., R.D., L.D.N.Boston, MA 021141225169394
  5. Susan Nelson, RD, LDNWest Brookfield, MA 015851376771394
  6. Tara Nelson, MS, RD, LDN, CNSCSandwich, MA 025631649529454
  7. Tori Nelson, RDNNatick, MA 017601851899421
  8. Emma Newell, RDGeorgetown, MA 018331750925806
  9. Jennifer Newman, MS, RD, LDN, CDCESWorcester, MA 016081194175372
  10. Molly Newman, R.D, L.D.NStow, MA 017751336393115
  11. Natalie Newmeyer-Blunden, RD, LDNFoxboro, MA 020351780380352
  12. Alice Ng, RD, LDN, IBCLCBoston, MA 021111316132400
  13. Vela Nicasio, RD, CDESpringfield, MA 011031245563741
  14. Dominica Nichols, RD, LDNBoston, MA 021141801288402
  15. Lauren Nickerson, RD, LDNEast Boston, MA 021281295666899
  16. Walchris Nicolas, RD, LDNNeedham, MA 024921497516124
  17. Courtney NiebauerMattapan, MA 021261942508346
  18. Michael Niejadlik, MS, RD, LDN, CSCSWorcester, MA 016051235755653
  19. Jessica Nighswander, RDGreenfield, MA 013011548675093
  20. Linda Nikolakopoulos, M.S, R.D, L.D.NLynn, MA 019041427264696
  21. Ashley Nixon, MS, RD, LDN, CNSCBoston, MA 021321245589183
  22. Isadora Nogueira, MS, RD, LDNBoston, MA 021141700170933
  23. Janet Nolan, RD, LDNMedford, MA 021551588894539
  24. Deanna Nole, RDNWorcester, MA 016551801438551
  25. Carol Nolin, MS, RD, LDN, CDEGardner, MA 014401245361179
  26. Polly Normand, MPH, RD, LDN, CDENorthampton, MA 010601528088317
  27. Claire Norton, R.D.,L.D.NAmherst, MA 010021740336544
  28. Claudette Novak, R.D.Amesbury, MA 019131790887875
  29. Erika Novello, RD, LDNGranby, MA 010331841697075
  30. Amanda Nunan, RDN, LDNWorcester, MA 016041043053853
  31. Ashley O'Brien, RD, LDNBoston, MA 021151194965426
  32. Catherine O'Brien, R.D.South Weymouth, MA 021901083683536
  33. Jolene O'Brien, MS RD LDNLakeville, MA 023471790547461
  34. Katherine O'Brien, RD, LDNActon, MA 017201588129639
  35. Lauren O'Brien, MS, RD, LDNBoston, MA 022151831442466
  36. Sara O'Brien, RDBurlington, MA 018051508234022
  37. Susan O'Brien, MS, RD, LDNTewksbury, MA 018761295028322
  38. Erin O'Connell, RDRoslindale, MA 021311407578776
  39. Lauren O'Connor, RDNWest Roxbury, MA 021321477162949
  40. Stefanie O'Connor, MS, RD, LDNRoslindale, MA 021311164816708
  41. Alicia O'Donnell, R.D.Dorchester, MA 021221225375223
  42. Marlene O'Donnell, RDBraintree, MA 021841316910235
  43. Mary Katherine O'Leary, RDHingham, MA 020431841760857
  44. Marc O'Meara, RDChestnut Hill, MA 024671366464398
  45. Meg O'Rourke, R.D.Fall River, MA 027241427255371
  46. Victoria O'Rourke, MPH, RD, LDNLeominster, MA 014531326683566
  47. James O'Toole, RDNPeabody, MA 019601003320102
  48. Kristen Obrien, RD, LDN, CLCAmherst, MA 010021497327399
  49. Coco Pearl Ocker, RDBoston, MA 021151972294536
  50. Elizabeth Odvarka, MS, RDN, LDNBoston, MA 022151992275473

Source: CMS NPPES, primary taxonomy 133V00000X: records by practice city and the list of records, file of Aug 9, 2026.

Massachusetts ranks 5 of 51 per resident

  1. North Dakota39
  2. Rhode Island34
  3. Alaska32
  4. Massachusetts32
  5. New Hampshire31
  6. Vermont30
  7. 50 states and D.C.20

Source: CMS NPPES, primary taxonomy 133V00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

6.5% of these records appear in a Medicare file, against 7.4% 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. Massachusetts6.5%
  2. United States7.4%

Registered Dietitian records in Massachusetts, measured

  • In a Medicare file145 of 2,244 · 6.5% here, 7.4% nationally
  • In the CMS Doctors and Clinicians file202 · 9.0% here, 9.8% nationally
  • Not updated in five years or more1,390 · 61.9% here, 56.3% nationally
  • Median graduation year2011 · the 202 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 133V00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,244 NPPES records list registered dietitian (133V00000X) as their primary taxonomy with a practice address in Massachusetts: 32 per 100,000 residents against 20 nationally (50 states and D.C.). Boston has 411 of them (18%).

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. Washington2,134
  2. New Jersey2,006
  3. Ohio2,581
  4. Michigan1,816

States with a similar rate per 100,000

  1. Alaska32.3
  2. New Hampshire30.7
  3. Rhode Island33.7
  4. Vermont29.8

The largest states

  1. California7,148
  2. Texas5,099
  3. New York4,724
  4. Florida3,443
  5. Pennsylvania3,083

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.