DR. CRAIG JANN LEONG M.D.
NPI 1639103344
Ophthalmology - Retina Specialist in Walnut Creek, CA

Active since July 10, 2006
365 LENNON LN STE 250, WALNUT CREEK, CA 94598(925) 943-6800(925) 943-6880 Get Directions Write a Review

NPPES record last updated: April 29, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Craig Jann Leong M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CRAIG JANN LEONG M.D. (NPI 1639103344) is an individual retina specialist in Walnut Creek, California, licensed in California (G28041) and active in the NPI registry since July 2006. He maintains 2 additional practice locations.

NPPES Registry Identity

NPI1639103344
Entity TypeIndividualMale
Primary Taxonomy207WX0107X
Provider Legal NameDR. CRAIG JANN LEONGCredential: M.D.
Location Address365 LENNON LN STE 250Walnut Creek, CA 94598-5915
Mailing Address365 Lennon Ln Ste 250Walnut Creek, CA 94598-5915 · (925) 943-6800 · Fax (925) 943-6880
Fax(925) 943-6880
Sole ProprietorNo
Enumeration DateJuly 10, 2006
Last NPPES UpdateApril 29, 2021
NPPES CertifiedApril 29, 2021
NPI 1639103344 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyOphthalmology · Retina SpecialistAllopathic & Osteopathic Physicians
Taxonomy Code207WX0107X
License Licensed in CA · G28041
Definition

An ophthalmologist who specializes in the diagnosis and treatment of vitreoretinal diseases.

Also ListedOphthalmologyTaxonomy 207W00000X · License G28041 (CA)
365 LENNON LN STE 250, Walnut Creek, CA 94598

Secondary Practice Locations 2

Location 120130 Lake Chabot Rd Ste 303Castro Valley, CA 94546-5340 · Phone (510) 733-1888 · Fax (510) 881-5332
Location 25980 Stoneridge Dr Ste 117Pleasanton, CA 94588-2723 · Phone (925) 463-8200 · Fax (925) 463-8201

Other Identifiers 1

Medicaid00G280410CA

Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Ophthalmology (Retina Specialist)
365 LENNON LN STE 250
WALNUT CREEK, CA 94598
Orthopaedic Surgery
365 LENNON LN STE 250, SUITE 250
WALNUT CREEK, CA 94598
Ophthalmology (Retina Specialist)
365 LENNON LN STE 250
WALNUT CREEK, CA 94598
Ophthalmology (Retina Specialist)
365 LENNON LN STE 250
WALNUT CREEK, CA 94598
Ophthalmology (Retina Specialist)
365 LENNON LN STE 250
WALNUT CREEK, CA 94598
Ophthalmology (Retina Specialist)
365 LENNON LN STE 250
WALNUT CREEK, CA 94598
Ophthalmology (Retina Specialist)
365 LENNON LN STE 250
WALNUT CREEK, CA 94598
Ophthalmology (Retina Specialist)
365 LENNON LN STE 250
WALNUT CREEK, CA 94598

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Craig Leong's NPI number?

The NPI number for Craig Leong is 1639103344. It was assigned to this individual provider in the NPPES registry on July 10, 2006.

Where is Craig Leong located?

Craig Leong practices at 365 Lennon Ln Ste 250, Walnut Creek, CA 94598. The listed phone number is (925) 943-6800.

What is Craig Leong's specialty?

The primary specialty registered for this NPI is Ophthalmology, specializing in Retina Specialist, with taxonomy code 207WX0107X.

When was this NPI record last updated?

The NPPES record for Craig Leong was last updated on April 29, 2021. NPI Profile syncs with the weekly NPPES data releases published by CMS.