NPPES file of Aug 9, 2026

Allergy & Immunology Physician in Montana

12 NPPES records list allergy & immunology physician with a practice address in Montana, 1.1 per 100,000 residents, the 28th highest rate of 51. 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 207K00000X · 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, 4

  1. Billings4
  2. Bozeman3
  3. Missoula3
  4. Great Falls1
  5. Helena1

Allergy & Immunology Physician records in Montana

  1. Juan Adams, M.D.Billings, MT 591011144512096
  2. Elaine Barbieri, MDGreat Falls, MT 594011639170525
  3. Kathleen Davis, MDBillings, MT 591021407959489
  4. Ward Dewitt, MDMissoula, MT 598041710095211
  5. Michael Dicello, MDBozeman, MT 597151720083173
  6. Donald Gillespie, MDMissoula, MT 598021831126747
  7. Summer Monforte, M.D.Helena, MT 596011194927293
  8. Thomas Scarborough, M.D.Billings, MT 591021235194200
  9. Carl Thornblade, MDMissoula, MT 598081073605200
  10. Alan Wanderer, MDBozeman, MT 597181386633220
  11. Michael Younker, DOBillings, MT 591011750493532
  12. Michael Zacharisen, MDBozeman, MT 597181316999824

Source: CMS NPPES, primary taxonomy 207K00000X: records by practice city and the list of records, file of Aug 9, 2026.

Montana ranks 28 of 51 per resident

  1. Texas1.1
  2. Delaware1.1
  3. Wisconsin1.1
  4. Montana1.1
  5. Iowa1.0
  6. Oregon1.0
  7. 50 states and D.C.1.2

Source: CMS NPPES, primary taxonomy 207K00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

58.3% of these records appear in a Medicare file, against 80.0% 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. Montana58.3%
  2. United States80.0%

Allergy & Immunology Physician records in Montana, measured

  • In a Medicare file7 of 12 · 58.3% here, 80.0% nationally
  • In the CMS Doctors and Clinicians file5 · 41.7% here, 65.7% nationally
  • Not updated in five years or more7 · 58.3% here, 57.3% nationally

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207K00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

12 NPPES records list allergy & immunology physician (207K00000X) as their primary taxonomy with a practice address in Montana: 1.1 per 100,000 residents against 1.2 nationally (50 states and D.C.). Billings has 4 of them (33%).

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. Rhode Island12
  2. West Virginia12
  3. Delaware11
  4. Maine10

States with a similar rate per 100,000

  1. Wisconsin1.1
  2. Texas1.1
  3. Iowa1.0
  4. Oregon1.0

The largest states

  1. California444
  2. Texas327
  3. New York311
  4. Florida204
  5. Pennsylvania183

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.