Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mark Hertenstein

Chiropractor in Great Falls, MT · enumerated 2006 · practices at 15th Street Chiropractic PC.

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

National Provider Identifier

1114030814

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Registry record

Entity type Individual (Type 1)

Name Mark Hertenstein

Sex Male

Practice address Great Falls, MT, 59405

Phone (406) 771-1222

Fax (406) 771-1225

Enumeration date Aug 16, 2006

Last updated in NPPES Jul 9, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 537 (MT) Primary

Other identifiers

Identifier	Type	State	Issuer
0164398	Medicaid	MT	-
0164407	Medicaid	MT	-

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

How do I verify Mark Hertenstein's NPI record?

Cross-check NPI 1114030814 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1114030814 active?

Yes, as of the latest NPPES snapshot, NPI 1114030814 is active (record last updated 2007-07-09).

Other providers at this practice address

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15th Street Chiropractic PC Clinic/Center · Great Falls, MT NPI 1073786653

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.