NPPES file of Aug 9, 2026

Neonatal-Perinatal Medicine Physician in Washington

128 NPPES records list neonatal-perinatal medicine physician with a practice address in Washington, 1.6 per 100,000 residents, the 39th highest rate of 50. Seattle and Tacoma have the most; each record links to the provider's NPI and the Washington license search. Page 3 of 3.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2080N0001X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Seattle has the most, 86

  1. Seattle86
  2. Tacoma14
  3. Spokane11
  4. Richland4
  5. Yakima4

Neonatal-Perinatal Medicine Physician records in Washington

  1. Ronald Shapiro, M.D.Spokane, WA 992041124082953
  2. Dyan Simon, M.D.Seattle, WA 981051629080106
  3. Dalbir Singh, MDOlympia, WA 985061235269127
  4. Robert Skarin, M.D.Yakima, WA 989021992767008
  5. Jessica Slusarski, MDSeattle, WA 981951801900410
  6. Santhosh Somashekar, M.D.Richland, WA 993521356658959
  7. Jeffrey Stolz, M.D.Seattle, WA 981051780649004
  8. Adam Stranberg, DOSpokane, WA 992041598253700
  9. Thomas StrandjordSeattle, WA 981051467533729
  10. Erik Strandness, MDSpokane, WA 992041144273715
  11. Terrence Sweeney, M.D.Seattle, WA 981221497702633
  12. Cherrie Tan Dy, M.D.Renton, WA 980551780972638
  13. Peter Tarczy-HornochSeattle, WA 981051215018577
  14. Gary Twiggs, M.D.Seattle, WA 981051730295569
  15. Rachel Umoren, MDSeattle, WA 981951619186046
  16. Mark Underwood, MDSpokane, WA 992041265414460
  17. Kirtikumar Upadhyay, MDSeattle, WA 981051184935678
  18. Theresa Urbina, DOTacoma, WA 984311518359652
  19. Linda Wallen, MDSeattle, WA 981951225046758
  20. Timothy Wang, MDSeattle, WA 981221104212398
  21. Kathleen Webb, M.D.Spokane, WA 992041447476429
  22. Claudia Weinheimer, M.D.Spokane, WA 992041548556376
  23. Elliott Weiss, M.D.Seattle, WA 981051073825303
  24. Richard WennbergSeattle, WA 981051184705436
  25. Bruce Willham, M.D.Tacoma, WA 984051447200704
  26. Jennifer Williams, M.D.Seattle, WA 981041972998946
  27. Jeff Yuan, MDGig Harbor, WA 983351316151376
  28. Miriam Zaragoza, MDRichland, WA 993521922150556

Source: CMS NPPES, primary taxonomy 2080N0001X: records by practice city and the list of records, file of Aug 9, 2026.

Washington ranks 39 of 50 per resident

  1. South Carolina1.8
  2. Arkansas1.8
  3. Maine1.7
  4. Washington1.6
  5. Idaho1.6
  6. Nebraska1.6
  7. 50 states and D.C.2.3

Source: CMS NPPES, primary taxonomy 2080N0001X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

14.8% of these records appear in a Medicare file, against 15.6% 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. Washington14.8%
  2. United States15.6%

Neonatal-Perinatal Medicine Physician records in Washington, measured

  • In a Medicare file19 of 128 · 14.8% here, 15.6% nationally
  • In the CMS Doctors and Clinicians file8 · 6.3% here, 7.0% nationally
  • Not updated in five years or more77 · 60.2% here, 55.5% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2080N0001X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

128 NPPES records list neonatal-perinatal medicine physician (2080N0001X) as their primary taxonomy with a practice address in Washington: 1.6 per 100,000 residents against 2.3 nationally (50 states and D.C.). Seattle has 86 of them (67%).

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. Louisiana118
  2. Colorado115
  3. Minnesota110
  4. Wisconsin146

States with a similar rate per 100,000

  1. Idaho1.6
  2. Nebraska1.6
  3. Michigan1.6
  4. Georgia1.6

The largest states

  1. California871
  2. Texas697
  3. New York513
  4. Florida457
  5. Pennsylvania393

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.