Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark E Hostettler, M.D.

Internal Medicine Physician in Alliance, OH · enumerated 2005.

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

National Provider Identifier

1265431753

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Registry record

Entity type Individual (Type 1)

Name Mark E Hostettler

Credential M.D.

Sex Male

Practice address 1207 W State St, Suite N, Alliance, OH, 44601

Phone (330) 821-3244

Fax (330) 868-5782

Enumeration date Jul 18, 2005

Last updated in NPPES Mar 30, 2017

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 35-05-2184-H (OH) 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
000000269631	Other	OH	ANTHEM
0690739	Medicaid	OH	-
110035014	Other	OH	MEDICARE RAILROADERS

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 does Mark Hostettler practice?

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

What is the NPI number for Mark Hostettler?

The National Provider Identifier (NPI) for Mark Hostettler is 1265431753, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-30.