Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Anh Tram Tonnu, O.D. (OPTOMETRIST)
Optometrist in San Diego, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1679521280
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Registry record
Entity type Individual (Type 1)
Name Anh Tram Tonnu
Credential O.D. (OPTOMETRIST)
Sex Female
Practice address 6945 El Cajon Blvd, San Diego, CA, 92115
Phone (800) 898-2020
Enumeration date May 5, 2006
Last updated in NPPES Dec 1, 2020
Taxonomy & licenses
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.
Frequently asked questions
How do I verify Anh Tonnu's NPI record?
Cross-check NPI 1679521280 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1679521280 active?
Yes, as of the latest NPPES snapshot, NPI 1679521280 is active (record last updated 2020-12-01).
Other providers at this practice address
Browse all → Lauren Abo Optometrist · San Diego, CA NPI 1588654719 Brenda Swiderski Optometrist · San Diego, CA NPI 1003806233 Barry Katzman Ophthalmology Physician · San Diego, CA NPI 1760473797 Ai (Theresa) Nguyen Optometrist · San Diego, CA NPI 1508857533 Quang Nguyen Optometrist · San Diego, CA NPI 1417948449 Norman Ratner Optometrist · San Diego, CA NPI 1811094709 Barry Katzman, M.D., Inc., Apc Ophthalmology Physician · San Diego, CA NPI 1326138710 Debra Mcintyre Optometrist · San Diego, CA NPI 1295810349
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-01.