NPPES file of Aug 9, 2026

Obstetrics Physician in Massachusetts

25 NPPES records list obstetrics physician with a practice address in Massachusetts, 0.4 per 100,000 residents, the 32nd highest rate of 51. Boston and Worcester have the most; each record links to the provider's NPI and the Massachusetts license search.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207VX0000X · 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, 8

  1. Boston8
  2. Worcester5
  3. Arlington1
  4. Brockton1
  5. Cambridge1

Obstetrics Physician records in Massachusetts

  1. Mohamed Ali, M.D.Fall River, MA 027201124122270
  2. Patricia Aronson, M.D.Worcester, MA 016051710978085
  3. Peter Brown, MDPembroke, MA 023591942249214
  4. Adrian Chiem, MDBoston, MA 021151508445248
  5. Madelyn Conner, MDBoston, MA 021181316684475
  6. Robert DalessandroLeominster, MA 014531295967669
  7. Radhika Datar, MDBoston, MA 021181366753642
  8. Debra Disandro, M.D.Springfield, MA 011071043219397
  9. Jonathan Friedes, MDBoston, MA 022151780606160
  10. Lisa Haddad, M.D.Boston, MA 021151285789545
  11. Mary Herlihy, M.D.Worcester, MA 016051679564967
  12. Taylor Hotchkiss, M.D.Arlington, MA 024761023150695
  13. Susan Lincoln, M.D.Needham, MA 024921568423119
  14. Amir Mehdizadeh, M.D.Worcester, MA 016041073976932
  15. Janelle Murphy, NPWeymouth, MA 021891457688756
  16. Melanie Nathan, MDDanvers, MA 019231861655821
  17. Debra Papa, M.D.Worcester, MA 016051053392019
  18. Emma PattersonBoston, MA 021111275425365
  19. Edward Peskin, M.D.Worcester, MA 016051982685061
  20. Shenbagavalli Ramaswami, MDBrockton, MA 023011255385266
  21. Paul Richer, MDWellesley Hills, MA 024811487640413
  22. Serena Rosa, WHNP, MPH, CLCDedham, MA 020261215413240
  23. Alison VogellBoston, MA 021111598909269
  24. Chana Wasserman, MDCambridge, MA 021391336112291
  25. Lily Wu, M.D.Boston, MA 022151073824835

Source: CMS NPPES, primary taxonomy 207VX0000X: records by practice city and the list of records, file of Aug 9, 2026.

Massachusetts ranks 32 of 51 per resident

  1. Washington0.4
  2. Pennsylvania0.4
  3. Rhode Island0.4
  4. Massachusetts0.4
  5. New Hampshire0.4
  6. Minnesota0.3
  7. 50 states and D.C.0.4

Source: CMS NPPES, primary taxonomy 207VX0000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

56.0% of these records appear in a Medicare file, against 73.6% 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. Massachusetts56.0%
  2. United States73.6%

Obstetrics Physician records in Massachusetts, measured

  • In a Medicare file14 of 25 · 56.0% here, 73.6% nationally
  • In the CMS Doctors and Clinicians file12 · 48.0% here, 58.2% nationally
  • Not updated in five years or more16 · 64.0% here, 55.7% nationally
  • Median graduation year2008 · the 12 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207VX0000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

25 NPPES records list obstetrics physician (207VX0000X) as their primary taxonomy with a practice address in Massachusetts: 0.4 per 100,000 residents against 0.4 nationally (50 states and D.C.). Boston has 8 of them (32%).

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. Arizona24
  2. Indiana26
  3. Louisiana26
  4. Maryland24

States with a similar rate per 100,000

  1. Minnesota0.3
  2. Pennsylvania0.4
  3. Washington0.4
  4. Missouri0.4

The largest states

  1. California174
  2. New York118
  3. Texas103
  4. Florida85
  5. Georgia64

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.