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 27 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. Rachel Martin, RD, LDNorth Andover, MA 018451548633167
  2. Sarah Martin, RDNBlackstone, MA 015041114358926
  3. Kayla MartinielloWilmington, MA 018871508719667
  4. Jessica Martino, MS, RD, LDNSouth Hamilton, MA 019821417665605
  5. Andrea Martinsen, MS, RD, CDNDuxbury, MA 023321205118866
  6. Gina Masciovecchio, RDStoughton, MA 020721952972150
  7. Jennifer Masello, MS, RD, LDNSouth Boston, MA 021271932068525
  8. Valerie Mason, RDNeedham, MA 024921720790777
  9. Susan Massad, HSD, RD, CHESWayland, MA 017781225458995
  10. Hypatia Massey, RD, LDN, CNSCBurlington, MA 018051811487838
  11. Christine Mastrangelo, RDNNewburyport, MA 019501558982827
  12. Helen Mastro, RDSomerville, MA 021441730152638
  13. Sarah Masukewicz, RD, LDN, CNSCBoston, MA 021111114794773
  14. Rebecca Materazzo, RD, LDNBoston, MA 021141174702054
  15. Elizabeth Matteo, M.S, RD, LDNBoston, MA 022151316479827
  16. Michelle Mattia, RDNSpringfield, MA 011041114670502
  17. Leslie Mattimore, MS, RD, LDNBoston, MA 021151669725123
  18. Lois Maurer, RDBurlington, MA 018051548430853
  19. Sarah Maurer, RD, LDNBoston, MA 021161689226664
  20. Christy Maxwell, PHD, RDN, LDNSouth Hadley, MA 010751144861022
  21. Julianne Maxwell, RDNEdgartown, MA 025391063275881
  22. Elizabeth May, MHSC, RDN, LDNNatick, MA 017601386047736
  23. Karen May, RD; LDNLowell, MA 018541457885998
  24. Adele Mayer, RDNAuburn, MA 015011902768179
  25. Lauren Mayer, MS, RDN, LDNBoston, MA 021301336544592
  26. Anna Maynes, RDN, LDNBoston, MA 021151821646522
  27. Sarah Mazerall, MBA, MS, RD, LDNBoston, MA 022151972733483
  28. Susan Mazrolle, MSRD, LDNLudlow, MA 010561407372519
  29. Morgan Mazzone, RDN, LDNAmherst, MA 010021962057992
  30. D Mazzoni, RDConcord, MA 017421235710997
  31. Jodi McAndrewCanton, MA 020211073060299
  32. Jenna McAuliffe, RDCambridge, MA 021391629724646
  33. Lauren McAvoy, RDBoston, MA 021201740804822
  34. Joy McCallum, REGISTERED DIETITIANLexington, MA 024211528650058
  35. Rosamond McCann, RD CDEMansfield, MA 020481578581583
  36. Amy McCarthy, MPH, RDN, LDNWestfield, MA 010851801446372
  37. Jeanna McCarthy, RDNBoston, MA 021141437703709
  38. Samantha McCarthy, MS, RDHaverhill, MA 018351609293273
  39. Helen McClarence, RD LDN M EDBedford, MA 017301447364864
  40. Holly McClung, MS, RDNatick, MA 017601336293554
  41. Michelle McCool, RDCharlestown, MA 021291184971491
  42. Melissa McCormack, RD, LDNTewksbury, MA 018761568755619
  43. Janelle McCormick, MS, RDN, LDNBoston, MA 021141245153063
  44. Carole McCorry, R.D.Weymouth, MA 021901275736423
  45. Anne McDonald, M.S., R.D. LDNDorchester, MA 021241528209996
  46. Cameron McDonald, RDCambridge, MA 021391356958003
  47. Claire McDonald, RDNBoston, MA 021111457059214
  48. Sarah McDonald-Roach, RDSpringfield, MA 011041063247872
  49. Andrea McDonough, RD LDNSpringfield, MA 011071700958840
  50. Laura McDonough, RDPittsfield, MA 012011528111416

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.