NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Denise K Snow Williams, OD

Optometrist in Randolph, MA · enumerated 2006.

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

National Provider Identifier

1710087788

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Denise K Snow Williams
Credential OD
Sex Female
Practice address 9 Warren Street, Randolph, MA, 02368
Fax (781) 963-5289
Enumeration date Sep 22, 2006
Last updated in NPPES Jun 4, 2015

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 3651 (MA) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
468944 Other - TUFTS HEALTH PLAN
0002693 Other - NEIGHBORHOOD HEALTH PLAN
19316 Other - SPECTERA
331044505 Other - CIGNA HEALTHCARE
W16275 Other - BLUE CROSS BLUE SHIELD
0338150 Medicaid MA -
152632 Other - HARVARD PILGRIM HEALTH PL
331044505 Other - UNITED HEALTH CARE

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 Denise Snow Williams?
Denise Snow Williams is registered in NPPES with the primary taxonomy of Optometrist. 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-04.