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

James Markle Tatum, OD

Optometrist in Rancho Cucamonga, CA · enumerated 2007 · practices at Rancho Vision Center Optometry Inc.

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

National Provider Identifier

1649307828

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Registry record

Entity type Individual (Type 1)
Name James Markle Tatum
Credential OD
Sex Male
Practice address Rancho Cucamonga, CA, 91730
Phone (909) 987-0728
Fax (909) 987-0729
Enumeration date Feb 27, 2007
Last updated in NPPES Aug 20, 2013

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 6368T (CA) 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.

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Frequently asked questions

What is the NPI number for James Tatum?
The National Provider Identifier (NPI) for James Tatum is 1649307828, a Type 1 (individual) record in the CMS NPPES registry.
Where does James Tatum practice?
The practice location on file with NPPES is in Rancho Cucamonga, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-08-20.