Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. GARY JAMES HAGNER D.C.
NPI 1154452647
Chiropractor in Saint Peters, MO

Q: What is Gary Hagner's NPI number?

The NPI number for Gary Hagner is 1154452647. It was assigned to this individual provider in the NPPES registry on March 8, 2007.

Q: What is Gary Hagner's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Gary Hagner was last updated on October 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 days 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.

Active since March 08, 2007

4139 MEXICO RD, SAINT PETERS, MO 63376(636) 447-1717(636) 922-9124 Get Directions Write a Review

NPPES record last updated: October 24, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Gary James Hagner D.c. NPPES

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

DR. GARY JAMES HAGNER D.C. (NPI 1154452647) is an individual chiropractor in Saint Peters, Missouri, licensed in Missouri (2007006520) and active in the NPI registry since March 2007. He is a graduate of Logan College Of Chiropractic (2006).

NPPES Registry Identity

NPI1154452647

Entity TypeIndividualMale

Primary Taxonomy111N00000X

Provider Legal NameDR. GARY JAMES HAGNERCredential: D.C.

Location Address4139 MEXICO RDSaint Peters, MO 63376-6410

Mailing Address4087 Veterans Memorial PkwySaint Peters, MO 63376-6421 · (636) 447-1717 · Fax (636) 922-9124

Phone(636) 447-1717

Fax(636) 922-9124

Sole ProprietorNo

Medical School CMSLogan College Of ChiropracticGraduated 2006

Enumeration DateMarch 8, 2007

Last NPPES UpdateOctober 24, 2026

NPPES CertifiedOctober 24, 2026

✔ NPI 1154452647 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyChiropractorChiropractic Providers

Taxonomy Code111N00000X

License✔ Licensed in MO · 2007006520

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.

4139 MEXICO RD, Saint Peters, MO 63376

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Gary James Hagner D.c. 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 ID3971609421

PECOS Enrollment IDI20070501000041

Areas of Expertise CMS Part B claims

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Chiropractic manipulative treatment, 3-4 spinal regions 98941

Chiropractic manipulative treatment for 3-4 spinal regions involves a trained professional applying controlled force to specific areas of your spine. This can help alleviate pain, improve physical function, and support your body's natural healing process.

1,178 services58 patients

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HAGNER CHIROPRACTIC

Chiropractor

4139 MEXICO RD
SAINT PETERS, MO 63376

St. Charles County (636) 447-1717

BRICKEY CHIROPRACTIC AND REHABILITATION, LLC

Chiropractor

4139 MEXICO RD
SAINT PETERS, MO 63376

St. Charles County (636) 358-4157

DR. DAVID JOSEPH BRICKEY DC

Chiropractor

4139 MEXICO RD
SAINT PETERS, MO 63376

St. Charles County (636) 447-1717

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 Gary Hagner's NPI number?

The NPI number for Gary Hagner is 1154452647. It was assigned to this individual provider in the NPPES registry on March 8, 2007.

Where is Gary Hagner located?

Gary Hagner practices at 4139 Mexico Rd, Saint Peters, MO 63376. The listed phone number is (636) 447-1717.

What is Gary Hagner's specialty?

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

Is Gary Hagner enrolled in Medicare?

Yes. Gary Hagner 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.

What insurance does Gary Hagner accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 4 other insurers list Gary Hagner 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 Gary Hagner was last updated on October 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 days 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.