Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Stuart Epstein, MD

Ophthalmology Physician in Ashland, OR · enumerated 2005.

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

National Provider Identifier

1740285667

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Registry record

Entity type Individual (Type 1)

Name Dr. William Stuart Epstein

Credential MD

Sex Male

Practice address 3530 Tolman Creek Rd, Ashland, OR, 97520

Phone (541) 482-8100

Fax (541) 488-5081

Enumeration date Jun 16, 2005

Last updated in NPPES Feb 16, 2018

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License MD13789 (OR) 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
0000WCPBQ	Other	OR	MEDICARE GROUP NUMBER
180036231	Other	CA	RAILROAD MEDICARE
GR0063170	Medicaid	CA	-
289751	Medicaid	OR	-
180001658	Other	OR	RAILROAD MEDICARE
ZZZ13445Z	Other	CA	MEDICARE GROUP NUMBER

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 1740285667 active?

Yes, as of the latest NPPES snapshot, NPI 1740285667 is active (record last updated 2018-02-16).

How do I verify William Epstein's NPI record?

Cross-check NPI 1740285667 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 2018-02-16.