Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dennis Worthington, MD

Maternal & Fetal Medicine Physician in Wauwatosa, WI · enumerated 2005.

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

National Provider Identifier

1245224864

Verified

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Registry record

Entity type Individual (Type 1)

Name Dennis Worthington

Credential MD

Sex Male

Practice address 201 N Mayfair Road, Wauwatosa, WI, 53226

Phone (414) 259-7480

Fax (414) 259-7481

Enumeration date Sep 9, 2005

Last updated in NPPES Feb 6, 2012

Taxonomy & licenses

207VM0101X Maternal & Fetal Medicine Physician Allopathic & Osteopathic Physicians · License 23370 (WI) Primary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 23370 (WI) Secondary

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
30340800	Medicaid	WI	-
1245224864	Medicaid	WI	-

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

What is the NPI number for Dennis Worthington?

The National Provider Identifier (NPI) for Dennis Worthington is 1245224864, a Type 1 (individual) record in the CMS NPPES registry.

Where does Dennis Worthington practice?

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

Other providers at this practice address

Browse all →

Menachem Graupe Maternal & Fetal Medicine Physician · Wauwatosa, WI NPI 1518952563 Margaret Carr Maternal & Fetal Medicine Physician · Wauwatosa, WI NPI 1053306126 John Daniels Pulmonary Disease Physician · Wauwatosa, WI NPI 1821052705 Kimberly Lamack Endocrinology, Diabetes & Metabolism Physician · Wauwatosa, WI NPI 1679531958

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-06.