Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Thomas Stuart, MD

Anesthesiology Physician in Farmington, CT · enumerated 2016.

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

National Provider Identifier

1659735652

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Registry record

Entity type Individual (Type 1)

Name William Thomas Stuart

Credential MD

Sex Male

Practice address 263 Farmington Ave, Farmington, CT, 06030

Phone (860) 679-3600

Fax (860) 679-1275

Enumeration date Apr 6, 2016

Last updated in NPPES Jul 11, 2021

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 64740 (CT) 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

How do I verify William Stuart's NPI record?

Cross-check NPI 1659735652 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1659735652 active?

Yes, as of the latest NPPES snapshot, NPI 1659735652 is active (record last updated 2021-07-11).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-11.