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

Dr. Karen Joyner Douglas, O.D.

Optometrist in Saginaw, MI · enumerated 2006 · practices at Douglas Family Vision, P.C..

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

National Provider Identifier

1669583258

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Registry record

Entity type Individual (Type 1)

Name Dr. Karen Joyner Douglas

Credential O.D.

Sex Female

Practice address Saginaw, MI, 48603

Phone (989) 752-7121

Enumeration date Aug 31, 2006

Last updated in NPPES Nov 5, 2018

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 4901004041 (MI) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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

What is the NPI number for Karen Douglas?

The National Provider Identifier (NPI) for Karen Douglas is 1669583258, a Type 1 (individual) record in the CMS NPPES registry.

Where does Karen Douglas practice?

The practice location on file with NPPES is in Saginaw, MI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Joseph Douglas Optometrist · Saginaw, MI NPI 1114935426 Douglas Family Vision, P.C. Optometrist · Saginaw, MI NPI 1871699314

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-11-05.