Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. William C Henshaw, OD

Optometrist in Lodi, CA · enumerated 2006.

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

National Provider Identifier

1205940889

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Registry record

Entity type Individual (Type 1)

Name Dr. William C Henshaw

Credential OD

Sex Male

Practice address Lodi, CA, 95240

Phone (209) 334-2020

Fax (209) 333-2015

Enumeration date Aug 19, 2006

Last updated in NPPES Mar 7, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 5036 TPA (CA) Primary

152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License 5036 TPA (CA) Secondary

152WS0006X Sports Vision Optometrist Eye and Vision Services Providers · License 50360 TPA (CA) Secondary

152WV0400X Vision Therapy Optometrist Eye and Vision Services Providers · License 5036 TPA (CA) Secondary

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
SD0050360	Medicaid	CA	-
5036 TPA	Other	CA	OPTOMETRY LICENSE

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

Is NPI 1205940889 active?

Yes, as of the latest NPPES snapshot, NPI 1205940889 is active (record last updated 2023-03-07).

How do I verify William Henshaw's NPI record?

Cross-check NPI 1205940889 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.