Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark R Bitner, MD

Obstetrics & Gynecology Physician in Layton, UT · enumerated 2005.

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

National Provider Identifier

1447236203

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Registry record

Entity type Individual (Type 1)

Name Mark R Bitner

Credential MD

Sex Male

Practice address 2121 N 1700 W, Layton, UT, 84041

Phone (801) 773-4840

Fax (801) 525-8151

Enumeration date Dec 22, 2005

Last updated in NPPES Jul 23, 2012

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 171203-1205 (UT) 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
005701318	Medicaid	UT	-
005536863	Medicaid	UT	-
07731	Medicaid	UT	-

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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Mark Bitner?

Mark Bitner is registered in NPPES with the primary taxonomy of Obstetrics & Gynecology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-23.