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 9 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. David Weinstock, MDBoston, MA 022151295707529
  2. Glen Weiss, MDBoston, MA 021111770639353
  3. Eric Westin, MDCambridge, MA 021391134397912
  4. Jennifer Westrup, M.D.Boston, MA 021181356397582
  5. Peter Whooley, D.O.Boston, MA 022151578927521
  6. Lori Wirth, MDBoston, MA 021151750344008
  7. Jonathan Wischhusen, M.D.Foxborough, MA 020351770930588
  8. John Wolff, M.D.Burlington, MA 018051255497400
  9. Brian Wolpin, M.D.Boston, MA 022151922066893
  10. Kwok Kin Wong, MDBoston, MA 022151235192576
  11. Wenxin Xu, M.D.Boston, MA 022151710390778
  12. Faiza Yasin, M.D.Boston, MA 022151649627704
  13. Andrew Yee, MDBoston, MA 021141568453496
  14. Channing Yu, M.D., PH.D.Boston, MA 022151518036672
  15. Matthew Yurgelun, M.D.Boston, MA 022151134386014
  16. Rushdia Yusuf, M.D.Boston, MA 021141396782348
  17. Ken Zaner, MDBoston, MA 021181073529137
  18. Corrine Zarwan, MDBurlington, MA 018051790724409
  19. Andrew Zhu, MD PHDBoston, MA 021141699741769
  20. Rebecca Zon, MDBoston, MA 021151003344037
  21. Leyre Zubiri Oteiza, MD, PHDBoston, MA 021141114574522

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.