Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

15th Street Chiropractic PC

Clinic/Center in Great Falls, MT · enumerated 2008 · authorized official Mark Hertenstein, Owner.

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

National Provider Identifier

1073786653

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Registry record

Entity type Organization (Type 2)

Legal business name 15th Street Chiropractic PC

Practice address 222 15th St S, Suite C, Great Falls, MT, 59405

Phone (406) 771-1222

Fax (406) 771-1225

Enumeration date Apr 3, 2008

Last updated in NPPES Apr 3, 2008

Taxonomy & classification

261Q00000X Clinic/Center Ambulatory Health Care Facilities · License 537 (MT) Primary

Authorized official

Name Mark Hertenstein

Title Owner

Phone (406) 771-1222

Other identifiers

Identifier	Type	State	Issuer
0164398	Medicaid	MT	-
40763	Other	MT	BLUE CROSS/BLUE SHIELD

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.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-04-03. Verify at npiregistry.cms.hhs.gov.

Where is 15th Street Chiropractic PC located?

The practice location on file with NPPES is in Great Falls, MT.

Providers at this address

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Mark Hertenstein Chiropractor · Great Falls, MT NPI 1114030814

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-03.