Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Michael J. Hartman, MD, PC

Orthopaedic Surgery of the Spine Physician in Munster, IN · enumerated 2007 · authorized official Martin Hall, MD.

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

National Provider Identifier

1366654410

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Registry record

Entity type Organization (Type 2)

Legal business name Michael J. Hartman, MD, PC

Practice address 801 Mac Arthur Blvd, Suite 304, Munster, IN, 46321

Phone (219) 836-4123

Enumeration date May 3, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

207XS0117X Orthopaedic Surgery of the Spine Physician Allopathic & Osteopathic Physicians · License 01050851A (IN) Primary

Authorized official

Name Martin Hall

Title MD

Phone (708) 799-1144

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

Where is Michael J. Hartman, MD, PC located?

The practice location on file with NPPES is in Munster, IN.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.