Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thomas B. Stelmak, CRNA

Certified Registered Nurse Anesthetist in Butte, MT · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1356374524

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Registry record

Entity type Individual (Type 1)

Name Thomas B. Stelmak

Credential CRNA

Sex Male

Practice address 400 S Clark St, Butte, MT, 59701

Phone (406) 723-2500

Enumeration date Jul 9, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License RN9822 (MT) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

Other identifiers

Identifier	Type	State	Issuer
0437597	Medicaid	MT	-
9639725	Medicaid	WA	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Thomas Stelmak?

Thomas Stelmak is registered in NPPES with the primary taxonomy of Certified Registered Nurse Anesthetist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Cindy Simpkins Family Nurse Practitioner · Butte, MT NPI 1457357980 Eva Curry Family Nurse Practitioner · Butte, MT NPI 1255312575 Matthew Wild Certified Registered Nurse Anesthetist · Butte, MT NPI 1902882558 St James Healthcare General Acute Care Hospital · Butte, MT NPI 1528037215 Charles Watson Internal Medicine Physician · Butte, MT NPI 1124065792 Christopher Heard Athletic Trainer · Butte, MT NPI 1225071889 William Ellis Emergency Medicine Physician · Butte, MT NPI 1821025792 Debra Lewis Emergency Medicine Physician · Butte, MT NPI 1457388324

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.