NPPES file of Aug 9, 2026

Neonatal-Perinatal Medicine Physician in Montana

25 NPPES records list neonatal-perinatal medicine physician with a practice address in Montana, 2.2 per 100,000 residents, the 25th highest rate of 50. Billings and Bozeman have the most; each record links to the provider's NPI and the Montana license search.

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).

Billings has the most, 11

  1. Billings11
  2. Bozeman5
  3. Kalispell4
  4. Great Falls3
  5. Manhattan1

Neonatal-Perinatal Medicine Physician records in Montana

  1. Sasha Amiri, M.D., M.S., MPHBillings, MT 591011679137897
  2. Kara Arvin, MDBozeman, MT 597151083605976
  3. Mark BakerBillings, MT 591011538665187
  4. Kari Barrett, MDBillings, MT 591011114963485
  5. Fermin Blanco, MDBillings, MT 591011376656751
  6. Luca Brunelli, MDBozeman, MT 597151790726412
  7. Jeffrey Carroll, MDBillings, MT 591011023050192
  8. Jeffrey Cooper, MDBillings, MT 591011265663322
  9. Danielle Deines, D.O.Kalispell, MT 599011750648044
  10. Marshall Dressel, M.D.Kalispell, MT 599011629176680
  11. Claire Gallibois, MDBillings, MT 591011396365664
  12. Steven Jesse, M.D.Manhattan, MT 597411215472915
  13. Mark Kaneta, MDKalispell, MT 599011992715114
  14. Sarah Kenney, M.D.Great Falls, MT 594051609090174
  15. Cynthia Padilla, M.D.Great Falls, MT 594051285880278
  16. Evelyn Peterson, MDKalispell, MT 599011306809520
  17. Loreen Pettit, MDBozeman, MT 597151417994328
  18. Alison Rentz, MDBillings, MT 591011356332621
  19. Philip Riedel, M.D.Great Falls, MT 594051679523427
  20. Leslie Ruybal, M.D.Billings, MT 591011457612921
  21. Nadine Seger, MDBillings, MT 591011255464046
  22. Bonnie Stephens, MDMissoula, MT 598041396832846
  23. Kathleen Stevens, MDBillings, MT 591011710914940
  24. Diane Warner, MDBozeman, MT 597151497835482
  25. Kristi Washburn-Tolsma, M.D.Bozeman, MT 597151932258647

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

Montana ranks 25 of 50 per resident

  1. Texas2.3
  2. California2.2
  3. Hawaii2.2
  4. Montana2.2
  5. Virginia2.2
  6. Oregon2.1
  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.

16.0% 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. Montana16.0%
  2. United States15.6%

Neonatal-Perinatal Medicine Physician records in Montana, measured

  • In a Medicare file4 of 25 · 16.0% here, 15.6% nationally
  • In the CMS Doctors and Clinicians file3 · 12.0% here, 7.0% nationally
  • Not updated in five years or more10 · 40.0% 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

25 NPPES records list neonatal-perinatal medicine physician (2080N0001X) as their primary taxonomy with a practice address in Montana: 2.2 per 100,000 residents against 2.3 nationally (50 states and D.C.). Billings has 11 of them (44%).

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. Maine24
  2. North Dakota28
  3. New Hampshire21
  4. Rhode Island29

States with a similar rate per 100,000

  1. Virginia2.2
  2. Hawaii2.2
  3. California2.2
  4. Texas2.3

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.