NPPES file of Aug 9, 2026

Rheumatology Physician in Massachusetts

343 NPPES records list rheumatology physician with a practice address in Massachusetts, 4.9 per 100,000 residents, the 2nd highest rate of 51. Boston and Worcester have the most; each record links to the provider's NPI and the Massachusetts license search. Page 4 of 7.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RR0500X · 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, 145

  1. Boston145
  2. Worcester42
  3. Cambridge16
  4. Burlington11
  5. Fall River7

Rheumatology Physician records in Massachusetts

  1. Elizabeth Karlson, MDBoston, MA 021151548228075
  2. Isaac Kasper, MDReading, MA 018671871889881
  3. Shanthini Kasturi, M.D.Boston, MA 021111144531047
  4. Guy Katz, M.D.Boston, MA 021141285168187
  5. Jeffrey Katz, MDBoston, MA 021151275582769
  6. Sharon Katz, MDBurlington, MA 018051144311226
  7. Maneet Kaur, MDFall River, MA 027201144480641
  8. Yumeko Kawano, M.D.Boston, MA 021151316478886
  9. Jonathan Kay, MDWorcester, MA 016051699766964
  10. Raphael Kieval, MDBrockton, MA 023011730155029
  11. Kyu Kim, M.D.Brockton, MA 023011942442405
  12. Nancy Kim, M.D.Boston, MA 021141669447090
  13. Seoyoung Kim, MDBoston, MA 021151972667020
  14. Eugene Kissin, M.D.Boston, MA 021181295770386
  15. Teresa Klich-Nowak, M.D.Northampton, MA 010601366489072
  16. Lloyd Klickstein, MD, PHDCambridge, MA 021391467423418
  17. Minna Kohler, M.D.Boston, MA 021141518924711
  18. Sarita Konka, M.D.Burlington, MA 018051790047520
  19. Anna Korogodina, MDWorcester, MA 016051154880029
  20. Susan Kovacs, MDBurlington, MA 018051114024379
  21. Jeffrey Kraines, M.D.Cambridge, MA 021421932146123
  22. Vasileios Kyttaris, M.D.Boston, MA 022151851344139
  23. Robert LafyatisBoston, MA 021181902896822
  24. Youmna Lahoud, MDBoston, MA 021181194039545
  25. Tanya Laidlaw, M.D.Boston, MA 021151386690949
  26. Alisha Lakhani, MD, MPHWorcester, MA 016051033521802
  27. Brandon Law, MDBoston, MA 021141578128864
  28. David Lee, MD PHDBoston, MA 021151821040387
  29. Ji Lee, M.D.Boston, MA 021111386873313
  30. Matthew Liang, MDBoston, MA 021151205893575
  31. Katherine Liao, MDBoston, MA 021151013962703
  32. Caryn Libbey, M.D.Boston, MA 021181417934142
  33. Jean Liew, MDBoston, MA 021181417374513
  34. Daniel Lindstrom, MDBoston, MA 021181215469077
  35. Erin Little, M.D.Boston, MA 021111770978835
  36. Nancy Liu, M.D.Worcester, MA 016051265416531
  37. William Lloyd, MDSalem, MA 019701033211164
  38. Juan-Pablo Lopez-Zertuche Ortiz, M.D.Boston, MA 021181013363167
  39. Evelyn Love, M.D.Worcester, MA 016051164538922
  40. Suzelle Luc, MDFairhaven, MA 027191770765505
  41. Daniel Magliulo, MDBoston, MA 022151174050595
  42. Divya Mahajan, MDFall River, MA 027201578879904
  43. Alan Marks, MDConcord, MA 017421689773236
  44. Marie-Claire Maroun, MDHolyoke, MA 010401942250501
  45. Marlene Marte Furment, MDHyannis, MA 026011376195123
  46. Peter Martens, M.D.Milton, MA 021861417981242
  47. Alexander Martin, MDWorcester, MA 016051245762913
  48. Elena Massarotti, MDBoston, MA 021151104980762
  49. Mark MatzaBoston, MA 021141306264577
  50. Kimberly May, MDLeeds, MA 010531588738447

Source: CMS NPPES, primary taxonomy 207RR0500X: records by practice city and the list of records, file of Aug 9, 2026.

Massachusetts ranks 2 of 51 per resident

  1. District of Columbia8.4
  2. Massachusetts4.9
  3. New Hampshire4.1
  4. Connecticut4.0
  5. 50 states and D.C.2.4

Source: CMS NPPES, primary taxonomy 207RR0500X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

73.5% of these records appear in a Medicare file, against 81.6% 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. Massachusetts73.5%
  2. United States81.6%

Rheumatology Physician records in Massachusetts, measured

  • In a Medicare file252 of 343 · 73.5% here, 81.6% nationally
  • In the CMS Doctors and Clinicians file212 · 61.8% here, 69.5% nationally
  • Not updated in five years or more214 · 62.4% here, 56.6% nationally
  • Median graduation year2004 · the 212 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RR0500X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

343 NPPES records list rheumatology physician (207RR0500X) as their primary taxonomy with a practice address in Massachusetts: 4.9 per 100,000 residents against 2.4 nationally (50 states and D.C.). Boston has 145 of them (42%).

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. Illinois340
  2. Ohio289
  3. Pennsylvania413
  4. New Jersey253

States with a similar rate per 100,000

  1. New Hampshire4.1
  2. Connecticut4.0
  3. Maryland3.5
  4. New York3.1

The largest states

  1. California926
  2. New York599
  3. Texas545
  4. Florida494
  5. Pennsylvania413

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.