Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William P Brotherton, M.D.

Anesthesiology Physician in Hackensack, NJ · enumerated 2005.

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

National Provider Identifier

1023090537

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Registry record

Entity type Individual (Type 1)

Name William P Brotherton

Credential M.D.

Sex Male

Practice address 140 Prospect Ave, Suite 8, Hackensack, NJ, 07601

Phone (201) 488-0066

Fax (201) 488-6769

Enumeration date Nov 18, 2005

Last updated in NPPES Jan 31, 2015

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 25MA03735100 (NJ) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 Brotherton practice?

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

What is the NPI number for William Brotherton?

The National Provider Identifier (NPI) for William Brotherton is 1023090537, 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 2015-01-31.