Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Douglas Eric Widmer, O.D.

Optometrist in South Bend, IN · enumerated 2011 · practices at Eyecare Indiana Ll, PC.

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

National Provider Identifier

1710269550

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Registry record

Entity type Individual (Type 1)

Name Dr. Douglas Eric Widmer

Credential O.D.

Sex Male

Practice address 4121 S. Michigan Street, South Bend, IN, 46614

Phone (574) 291-9200

Fax (574) 299-4423

Enumeration date Sep 19, 2011

Last updated in NPPES Mar 25, 2013

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 18003697A (IN) 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
201034430	Medicaid	IN	-

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 Douglas Widmer's NPI record?

Cross-check NPI 1710269550 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1710269550 active?

Yes, as of the latest NPPES snapshot, NPI 1710269550 is active (record last updated 2013-03-25).

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Lawrence Shinneman Optometrist · South Bend, IN NPI 1306813464 Eyecare Indiana Ll, PC Optometrist · South Bend, IN NPI 1447516604

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-25.