Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William A Fitzmaurice Jr., M.D.

Obstetrics & Gynecology Physician in Elmhurst, IL · enumerated 2005.

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

National Provider Identifier

1013907393

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Registry record

Entity type Individual (Type 1)

Name Dr. William A Fitzmaurice Jr.

Credential M.D.

Sex Male

Practice address 360 W Butterfield Rd, Suite 250, Elmhurst, IL, 60126

Phone (630) 832-4210

Fax (630) 832-8110

Enumeration date Oct 26, 2005

Last updated in NPPES Oct 18, 2022

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 036-075014 (IL) 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
036075014	Medicaid	IL	-

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 William Fitzmaurice practice?

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

What is the NPI number for William Fitzmaurice?

The National Provider Identifier (NPI) for William Fitzmaurice is 1013907393, 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 2022-10-18.