Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Roger Sirek, D.C
Chiropractor in Billings, MT · enumerated 2016.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1174065874
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Registry record
Entity type Individual (Type 1)
Name Dr. Roger Sirek
Credential D.C
Sex Male
Practice address 1918 Broadwater Ave, Billings, MT, 59102
Phone (406) 969-3805
Fax (406) 530-1326
Enumeration date Nov 11, 2016
Last updated in NPPES Feb 12, 2020
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC credential
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.
Frequently asked questions
How do I verify Roger Sirek's NPI record?
Cross-check NPI 1174065874 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1174065874 active?
Yes, as of the latest NPPES snapshot, NPI 1174065874 is active (record last updated 2020-02-12).
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-12.