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

Mark R Gardner, M.D.

Occupational Medicine Physician in East Chicago, IN · enumerated 2007 · practices at St. Catherine Hospital Occupational Health.

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

National Provider Identifier

1114055787

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Registry record

Entity type Individual (Type 1)

Name Mark R Gardner

Credential M.D.

Sex Male

Practice address East Chicago, IN, 46312

Phone (219) 392-7424

Fax (219) 392-7450

Enumeration date Mar 2, 2007

Last updated in NPPES Oct 13, 2017

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036068695 (IL) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 01059461A (IN) Secondary

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License 036068695 (IL) Secondary

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License 01059461A (IN) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

Is NPI 1114055787 active?

Yes, as of the latest NPPES snapshot, NPI 1114055787 is active (record last updated 2017-10-13).

How do I verify Mark Gardner's NPI record?

Cross-check NPI 1114055787 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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St. Catherine Hospital Occupational Health Occupational Medicine Clinic/Center · East Chicago, IN NPI 1689905440

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-10-13.