Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Andrea Y Tam, OD
Optometrist in Baldwin Park, CA · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1811563174
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Registry record
Entity type Individual (Type 1)
Name Andrea Y Tam
Credential OD
Sex Female
Practice address 1011 Baldwin Park Blvd, Baldwin Park, CA, 91706
Phone (833) 574-2273
Enumeration date May 27, 2021
Last updated in NPPES Aug 22, 2025
Taxonomy & licenses
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.
Frequently asked questions
What is the NPI number for Andrea Tam?
The National Provider Identifier (NPI) for Andrea Tam is 1811563174, a Type 1 (individual) record in the CMS NPPES registry.
Where does Andrea Tam practice?
The practice location on file with NPPES is in Baldwin Park, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Heng Long Chhay Family Medicine Physician · Baldwin Park, CA NPI 1225021041 Armond Khachatourians Orthopaedic Surgery Physician · Baldwin Park, CA NPI 1689656340 Steven Park Internal Medicine Physician · Baldwin Park, CA NPI 1104897495 Vicki Quan Internal Medicine Physician · Baldwin Park, CA NPI 1962477299 Michelle Britt Ophthalmology Physician · Baldwin Park, CA NPI 1043286040 Andrea Backes Emergency Medicine Physician · Baldwin Park, CA NPI 1831158104 Ying-Ting Yeh Family Medicine Physician · Baldwin Park, CA NPI 1508825944 Jennifer Graham Orthopaedic Surgery Physician · Baldwin Park, CA NPI 1629025085
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-22.