DR. R STEPHEN IRWIN (M. D.) – Geriatric Medicine (Family Medicine) Physician, NPI 1528093382

Geriatric Medicine (Family Medicine) Physician

DR. R STEPHEN IRWIN (M. D.) is a healthcare provider. based in Polson, Montana. specializing in Geriatric Medicine (Family Medicine) Physician. They hold the professional credentials M. D.. They hold a License No. 4753 (MT). The NPI Number for DR. R STEPHEN IRWIN (M. D.) is 1528093382

Main info

Male

55 Years Of Experience

Accepts Medicare Assignment

Name

DR. R STEPHEN IRWIN (M. D.)

NPI

1528093382

Phone

(406) 883-5680

Address

PO BOX 1010

Enumeration Date

11 July 2006

Last Update Date

7 March 2025

Doctor Profile

Medical School Name

INDIANA UNIVERSITY SCHOOL OF MEDICINE

Secondary Phone

4068835377

Graduation Year

1971 (55 years ago)

PAC ID

9436196300

Group Practice PAC ID

0446230247

Professional Enrollment ID

I20050412000918

Contacts

Secure Messaging

rirwin214610@wm.providencedirect.org

Data current as of

19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology

Experience67

Completeness85

Years active:19State licenses:1Other namesUpdated within 12 months

Provider Addresses for DR. R STEPHEN IRWIN (M. D.)

PO BOX 1010
POLSON, MT 598601010
Phone: (406) 883-5680
Fax: (406) 883-8926
Type: Mailing
29822 SMUGGLERS POINT RD
POLSON, MT 598605315
Phone: (406) 883-5680
Type: Location
Providence Saint Joseph Medical Center, 6, 13th Avenue East, Polson, Lake County, Montana, 59860, United States
POLSON, MT 598605315
Phone: (406) 883-5680
Fax: (406) 883-8926
Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

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Medicare Enrollment & Revalidation

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Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

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Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 59860)

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Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.

PAC ID: 0446230247View full group profile

Name	Specialty	State
LOUIS BRENNER (M.D.)	Family Practice	CA
REBECCA FILIPOWICZ (PA-C, MS)	Physician Assistant	WA
ANGELA LEMIRE (PA-C)	Physician Assistant	MT
MATTHEW JOSEPH ANDERSON	Orthopedic Surgery	NY
MICHELE A DANICICH (MD)	E N D O C R I N O L O G Y	MT
SCOT A SWANSON (M.D,)	-	MT
THOMAS E SHERRY (M.D.)	-	WA
DEBORAH F SYBRANT (PA-C)	Physician Assistant	MT
JOSEPH JR. SMITH (M.D.)	Emergency Medicine	NM
DR. REBECCA LEAH BONTADELLI (MD)	Emergency Medicine	OH

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Frequently asked questions

What NPI should I save for DR. R STEPHEN IRWIN (M. D.)?

Save NPI 1528093382 if you need a stable reference for DR. R STEPHEN IRWIN (M. D.).

Does this profile mean DR. R STEPHEN IRWIN (M. D.) is currently active?

Yes — DR. R STEPHEN IRWIN (M. D.) appears active in the national provider directory.

Can you summarize DR. R STEPHEN IRWIN (M. D.)'s specialty in plain language?

Clinically, the directory lists DR. R STEPHEN IRWIN (M. D.) with Geriatric Medicine (Family Medicine) Physician. Clinical services aligned with this taxonomy classification.

Where is DR. R STEPHEN IRWIN (M. D.)'s primary listing?

We display Polson, Montana because that is what the record indicates for DR. R STEPHEN IRWIN (M. D.).

Does Medicare enrollment show here?

Medicare enrollment screens are separate from the basic NPI extract shown here.