Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William J. Mullally, MD

Neurology Physician in Braintree, MA · enumerated 2006.

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

National Provider Identifier

1659463339

Verified

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Registry record

Entity type Individual (Type 1)

Name William J. Mullally

Credential MD

Sex Male

Practice address 111 Grossman Dr, Neurology, Braintree, MA, 02184

Phone (781) 849-2265

Fax (781) 849-2274

Enumeration date Sep 29, 2006

Last updated in NPPES Jun 7, 2011

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 46261 (MA) Secondary

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 46261 (MA) 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
111404	Other	MA	HARVARD PILGRIM
0014880	Other	MA	NEIGHBORHOOD HEALTH PLAN
3179591	Medicaid	MA	-
046261	Other	MA	TUFTS HEALTH PLAN
P00086706	Other	MA	MEDICARE RAILROAD
J12153	Other	MA	BLUE CROSS
7011385-002	Other	MA	CIGNA

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 Mullally practice?

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

What is the NPI number for William Mullally?

The National Provider Identifier (NPI) for William Mullally is 1659463339, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-07.