Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Bartram Fox, MD

Internal Medicine Physician in Sandwich, MA · enumerated 2006 · practices at Briarpatch Pediatrics.

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

National Provider Identifier

1881651560

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name William Bartram Fox

Credential MD

Sex Male

Practice address 68b Route 6a, Briar Patch Medical Associates, Sandwich, MA, 02563

Phone (508) 833-3285

Fax (508) 833-8318

Enumeration date Apr 27, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 59349 (MA) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians 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
J07149	Other	MA	BLUECROSS BLUESHIELD
04-01209	Other	-	UNITED HEALTHCARE
6530	Other	MA	HARVARD PILGRIM HEALTH CA
9765611	Medicaid	MA	-
761758	Other	MA	TUFTS HEALTH PLAN
B10320301	Other	-	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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is William Fox?

William Fox is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.