Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John Henry Marsh
Chiropractor in Manhattan, MT · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1588556013
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Registry record
Entity type Individual (Type 1)
Name John Henry Marsh
Sex Male
Practice address 114 W Main St, Manhattan, MT, 59741
Phone (406) 284-3246
Fax (406) 284-3245
Enumeration date Jul 18, 2025
Last updated in NPPES Oct 29, 2025
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1114095502 | Other | MT | GROUP NPI |
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
Is NPI 1588556013 active?
Yes, as of the latest NPPES snapshot, NPI 1588556013 is active (record last updated 2025-10-29).
How do I verify John Marsh's NPI record?
Cross-check NPI 1588556013 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-29.