NPPES file of Aug 9, 2026

R Stephen Irwin, M. D.

Geriatric Medicine (Family Medicine) Physician · Polson, MT

R Stephen Irwin, M. D. is a geriatric medicine (family medicine) physician with a practice address in Polson, Montana, and NPI 1528093382, issued on Jul 11, 2006. Check the license (Montana 4753, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1528093382
Name
R Stephen Irwin
Credential
M. D.
Primary taxonomy
Geriatric Medicine (Family Medicine) Physician 207QG0300X
License number
4753 MT
Self-reported in NPPES; status is on the state search
Practice location
29822 Smugglers Point RD, Polson, MT 59860
Phone
(406) 883-5680
Enumerated
Jul 11, 2006
Record last updated
Mar 7, 2025
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

7 nearest geriatric medicine (family medicine) physician records → All 8 in Montana → Look up another NPI →

Verify R Stephen Irwin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMontana Board of Medical Examiners
    Search for license 4753    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Montana license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

18% more Medicare Part D claims than the average geriatric medicine (family medicine) physician in 2024

6,160 Medicare Part D claims for 97 beneficiaries, against an average of 5,222 among the 1,271 providers of this specialty who prescribed in Part D. 316 claims were for opioids.

  1. R Irwin6,160
  2. Specialty average5,222

Most prescribed

  1. Furosemide405 claims
  2. Levothyroxine Sodium341 claims
  3. Gabapentin207 claims
  4. Atorvastatin Calcium164 claims
  5. Hydrocodone-Acetaminophen143 claims
  6. Potassium Chloride138 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Geriatric Medicine (Family Medicine) Physician providers in Montana

There are 8 geriatric medicine (family medicine) physician records in Montana.

All 8 in Montana → Every provider in Polson → Geriatric Medicine (Family Medicine) Physician nationwide →

The 7 geriatric medicine (family medicine) physician records with the nearest ZIP codes

  1. Karen Leggett, D.O.Kalispell, MT 599011093883357
  2. Roman Hendrickson, MDSheridan, MT 597491205823135
  3. Melissa Vance, MDBozeman, MT 597151902300486
  4. James Meyer, M.D.Fort Harrison, MT 596361952403313
  5. Kyra Carpenter, D.O.Great Falls, MT 594051639462294
  6. Rose PicchiGreat Falls, MT 594011568043362
  7. Irene Lohkamp, MDBillings, MT 591011891759197

Common questions

What is R Stephen Irwin, M. D.'s NPI number?

R Stephen Irwin, M. D.'s National Provider Identifier (NPI) is 1528093382, issued on Jul 11, 2006. An NPI identifies a provider in billing; it is not a license.

Where is R Stephen Irwin, M. D. located?

The NPPES record lists a practice address at 29822 Smugglers Point RD, Polson, MT, 59860. Phone: (406) 883-5680. Providers update this record themselves, so call before visiting.

How can I verify R Stephen Irwin, M. D.'s license?

NPPES lists Montana license number 4753, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does R Stephen Irwin, M. D. prescribe under Medicare Part D?

In 2024, R Stephen Irwin, M. D. had 6,160 Medicare Part D claims for 97 beneficiaries; the average among geriatric medicine (family medicine) physician prescribers was 5,222. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

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

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.