NPPES file of Aug 9, 2026

Medical Oncology Physician in Massachusetts

421 NPPES records list medical oncology physician with a practice address in Massachusetts, 6 per 100,000 residents, the 1st highest rate of 51. Boston and Weymouth have the most; each record links to the provider's NPI and the Massachusetts license search. Page 8 of 9.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RX0202X · 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, 341

  1. Boston341
  2. Weymouth10
  3. Burlington9
  4. Springfield9
  5. Cambridge7

Medical Oncology Physician records in Massachusetts

  1. Harshabad Singh, MDBoston, MA 021141376834325
  2. Cynthia Sirard, M.D.Cambridge, MA 021411336271212
  3. William Slichenmyer, M.D.Sherborn, MA 017701962773424
  4. Deborah Smith, MDNorthampton, MA 010601891778395
  5. Eric Smith, MD, PHDBoston, MA 022151710202866
  6. Matthew Smith, MD PHDBoston, MA 021141679554588
  7. Monica Smith, MDHarwich, MA 026451558309336
  8. Robert Soiffer, MDBoston, MA 021151780653261
  9. Tara Soumerai, M.D.Boston, MA 021141295055663
  10. Dimitrios Spentzos, MDBoston, MA 021141174556120
  11. Laura Spring, M.D.Boston, MA 021141811282957
  12. James Stewart, MDSpringfield, MA 011071518928431
  13. James Stoeckle, M.D.Weymouth, MA 021901578912721
  14. Elizabeth Stover, MD, PHDBoston, MA 022151437387693
  15. Rishi SuranaBoston, MA 022151437513587
  16. Kelly Swanson, DOHyannis, MA 026011306814223
  17. Richard Swanson, MDBoston, MA 021151467402990
  18. Christopher Sweeney, M.D.Boston, MA 021151659337038
  19. Ronald Takvorian, MDBoston, MA 021141093796419
  20. Sualp Tansan, M.D.Plymouth, MA 023601194830877
  21. Jacqueline Tao, MDBoston, MA 021141740817394
  22. Umit Tapan, M.D.Boston, MA 021181457581043
  23. Mary-Ellen Taplin, MDBoston, MA 021151437118627
  24. Paolo Tarantino, MDBoston, MA 022151619747359
  25. Allison Taylor, MDBoston, MA 021141962030312
  26. Jennifer Temel, MDBoston, MA 021141063496479
  27. Robert Tepper, M.D.Weston, MA 024931720101629
  28. Megan Tesch, M.D.Boston, MA 022151306514831
  29. Alok Tewari, M.D., PH.D.Boston, MA 022151689011397
  30. Bicky Thapa, M.D.Boston, MA 022151033662432
  31. Thejus Thayyil Jayakrishnan, MDBoston, MA 022151568880458
  32. Kathy Theall, MDBoston, MA 021111881679462
  33. Katherine Thornton, M.D.Boston, MA 022151689609497
  34. David Ting, MDBoston, MA 021141053388108
  35. Elizabeth Trehu, M.D.Cambridge, MA 021421598901068
  36. Ilit Turgeman, MDBoston, MA 022151073487542
  37. Alice Tzeng, MD, PHDBoston, MA 022151295314755
  38. Shannon Ugarte, M.D.Boston, MA 022151134652118
  39. Eliezer Vanallen, M.D.Boston, MA 022151447484779
  40. Leticia Varella, M.D.Boston, MA 022151134451131
  41. Michael Vasconcelles, M.D.Boston, MA 021151598783292
  42. Vinayak Venkataraman, MDBoston, MA 021141437679610
  43. Martha Wadleigh, MDBoston, MA 021151972578185
  44. Michael WagnerBoston, MA 022151023317898
  45. Jeremiah WalaBoston, MA 022151932669249
  46. Sarah Waliany, MDBoston, MA 021141356802375
  47. Iain Webb, M.D.Boston, MA 021161487844528
  48. Colin Weekes, MDBoston, MA 021141043366750
  49. Xiao Wei, MDBoston, MA 022151255630026
  50. Ronald Weinger, MDPeabody, MA 019601396859294

Source: CMS NPPES, primary taxonomy 207RX0202X: records by practice city and the list of records, file of Aug 9, 2026.

Massachusetts ranks 1 of 51 per resident

  1. Massachusetts6.0
  2. District of Columbia4.3
  3. Maryland3.6
  4. 50 states and D.C.1.7

Source: CMS NPPES, primary taxonomy 207RX0202X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

76.5% of these records appear in a Medicare file, against 81.8% 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. Massachusetts76.5%
  2. United States81.8%

Medical Oncology Physician records in Massachusetts, measured

  • In a Medicare file322 of 421 · 76.5% here, 81.8% nationally
  • In the CMS Doctors and Clinicians file291 · 69.1% here, 72.5% nationally
  • Not updated in five years or more215 · 51.1% here, 49.3% nationally
  • Median graduation year2007 · the 291 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RX0202X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

421 NPPES records list medical oncology physician (207RX0202X) as their primary taxonomy with a practice address in Massachusetts: 6 per 100,000 residents against 1.7 nationally (50 states and D.C.). Boston has 341 of them (81%).

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. California447
  2. Texas547
  3. New York548
  4. Florida561

States with a similar rate per 100,000

  1. District of Columbia4.3
  2. Maryland3.6
  3. Minnesota2.8
  4. Connecticut2.7

The largest states

  1. Florida561
  2. New York548
  3. Texas547
  4. California447
  5. Pennsylvania265

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.