Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stephen J Hartsock, MD

Sports Medicine (Family Medicine) Physician in Avon, IN · enumerated 2006.

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

National Provider Identifier

1114938453

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen J Hartsock

Credential MD

Sex Male

Practice address 1115 Ronald Reagan Pkwy, Ste 148, Avon, IN, 46123

Phone (317) 962-8893

Fax (317) 962-6722

Enumeration date Aug 11, 2006

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 036110046 (IL) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 01072804A (IN) Secondary

207QS0010X Sports Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 01072804A (IN) Primary

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

Other identifiers

Identifier	Type	State	Issuer
336070768	Other	IL	CONTROLLED SUBSTANCE #
201166240	Medicaid	IN	-

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

Where does Stephen Hartsock practice?

The practice location on file with NPPES is in Avon, IN. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Stephen Hartsock?

The National Provider Identifier (NPI) for Stephen Hartsock is 1114938453, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.