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JOHN HENRY MARSH
NPI 1588556013
Chiropractor in Manhattan, MT

Active since July 18, 2025Accepts Medicare Assignment
114 W MAIN ST, MANHATTAN, MT 59741(406) 284-3246(406) 284-3245 Get Directions Write a Review

NPPES record last updated: October 29, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About John Henry Marsh NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN HENRY MARSH (NPI 1588556013) is an individual chiropractor in Manhattan, Montana, licensed in Montana (10026) and active in the NPI registry since July 2025. He is a graduate of Northwestern College Of Chiropractic (2025).

NPPES Registry Identity

NPI1588556013
Entity TypeIndividualMale
Primary Taxonomy111N00000X
Provider Legal NameJOHN HENRY MARSH
Location Address114 W MAIN STManhattan, MT 59741-2207
Mailing AddressPo Box 855Manhattan, MT 59741-0855 · (406) 284-3246
Phone(406) 284-3246
Fax(406) 284-3245
Sole ProprietorNo
Medical School CMSNorthwestern College Of ChiropracticGraduated 2025
Enumeration DateJuly 18, 2025
Last NPPES UpdateOctober 29, 2025
NPPES CertifiedOctober 29, 2025
✔ NPI 1588556013 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyChiropractorChiropractic Providers
Taxonomy Code111N00000X
License✔ Licensed in MT · 10026
Definition
A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.
114 W MAIN ST, Manhattan, MT 59741
Open in Google Maps ↗

Other Identifiers 1

Other1114095502MT · Group Npi

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, Mountain Health CO-OP, PacificSource Health Plans.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

John Henry Marsh is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5496240673
PECOS Enrollment IDI20251224002072

Medicare Billing Reassignments

2

Medicare enrollment records show John Marsh reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Manhattan Back & Neck Inc
0.1 mi
Chiropractor
114 WEST MAIN
Manhattan, MT 59741
  • Reassigned Medicare billing, Montana enrollment
  • 2 clinicians in this Medicare group
NPI 1114095502 (406) 284-3246
Big Sky Chiropractic Clinic PC
18 mi
Chiropractor
120 N 19TH AVE, SUITE B
Bozeman, MT 59718
  • Reassigned Medicare billing, Montana enrollment
  • 3 clinicians in this Medicare group
NPI 1427125251 (406) 586-0275

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is John Marsh's NPI number?

The NPI number for John Marsh is 1588556013. It was assigned to this individual provider in the NPPES registry on July 18, 2025.

Where is John Marsh located?

John Marsh practices at 114 W Main St, Manhattan, MT 59741. The listed phone number is (406) 284-3246.

What is John Marsh's specialty?

The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.

Is John Marsh enrolled in Medicare?

Yes. John Marsh is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for John Marsh's services?

According to the CMS Revalidation Reassignment List (October 2026 release), John Marsh reassigns Medicare benefits to 2 organizations: Manhattan Back & Neck Inc (Manhattan, MT) and Big Sky Chiropractic Clinic PC (Bozeman, MT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Marsh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does John Marsh accept?

Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP and PacificSource Health Plans list John Marsh as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for John Marsh was last updated on October 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.