Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Diablo Valley Optical

Eyewear Supplier in Walnut Creek, CA · enumerated 2007 · authorized official Nancy Gould, Accounts Receivable.

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

National Provider Identifier

1710109236

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Registry record

Entity type Organization (Type 2)

Legal business name Diablo Valley Optical

Practice address 112 La Casa Via Ste 260, Walnut Creek, CA, 94598

Phone (925) 934-6300

Enumeration date May 3, 2007

Last updated in NPPES Jan 22, 2008

Taxonomy & classification

332H00000X Eyewear Supplier Suppliers Primary

Authorized official

Name Nancy Gould

Title Accounts Receivable

Phone (925) 934-6300

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

Where is Diablo Valley Optical located?

The practice location on file with NPPES is in Walnut Creek, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-01-22. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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J. Frederick Riedel, M.D., Inc. Ophthalmology Physician · Walnut Creek, CA NPI 1265655195 James E. Dowling, M.D., Inc Ophthalmology Physician · Walnut Creek, CA NPI 1295958130 Diablo Valley Optical Eyewear Supplier · Walnut Creek, CA NPI 1629299573 Diablo Valley Eye Medical Center Ophthalmology Physician · Walnut Creek, CA NPI 1053527259

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-22.