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

William Byron Zipf, MD

Q: What is the NPI number for William Zipf?

The National Provider Identifier (NPI) for William Zipf is 1801974951, a Type 1 (individual) record in the CMS NPPES registry.

Specialist in Columbus, OH · enumerated 2006.

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

National Provider Identifier

1801974951

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Registry record

Entity type Individual (Type 1)

Name William Byron Zipf

Credential MD

Sex Male

Practice address Columbus, OH, 43235

Phone (614) 839-3040

Fax (614) 839-3041

Enumeration date Nov 2, 2006

Last updated in NPPES Aug 8, 2018

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

Taxonomy & licenses

2080P0205X Pediatric Endocrinology Physician Allopathic & Osteopathic Physicians · License 074171 (GA) Secondary

174400000X Specialist Other Service Providers · License 35012599Z (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
0373760	Medicaid	OH	-

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 William Zipf practice?

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

What is the NPI number for William Zipf?

The National Provider Identifier (NPI) for William Zipf is 1801974951, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Jennifer Dyer Pediatric Endocrinology Physician · Columbus, OH NPI 1932121480 Crosswoods Women'S Health, Inc. Specialist · Columbus, OH NPI 1154544823 Patricia Graves Pediatric Nurse Practitioner · Columbus, OH NPI 1235331703 Central Ohio Pediatric Endocrinology & Diabetes Serv LLC Specialist · Columbus, OH NPI 1194965699 Abimbola Oyedola Family Nurse Practitioner · Columbus, OH NPI 1619371002 Rick Stephenson Physician Assistant · Columbus, OH NPI 1265978373 Rachel Kirk Family Medicine Physician · Columbus, OH NPI 1710417498 Nicole Herath Physician Assistant · Columbus, OH NPI 1295224350

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-08-08.