Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Calvin Lung Chan, PHARM. D.
Pharmacist in San Francisco, CA · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639483324
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Registry record
Entity type Individual (Type 1)
Name Calvin Lung Chan
Credential PHARM. D.
Sex Male
Practice address 2550 Ocean Ave, San Francisco, CA, 94132
Phone (415) 587-9000
Enumeration date Aug 5, 2010
Last updated in NPPES Aug 5, 2010
Taxonomy & licenses
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy.
About the PHARMD 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 Calvin Chan?
The National Provider Identifier (NPI) for Calvin Chan is 1639483324, a Type 1 (individual) record in the CMS NPPES registry.
Where does Calvin Chan practice?
The practice location on file with NPPES is in San Francisco, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Walgreen Co Pharmacy · San Francisco, CA NPI 1407861735 Albert Lau Pharmacist · San Francisco, CA NPI 1679855282 Walgreens Pharmacist · San Francisco, CA NPI 1033492533 Phuong Nguyen Pharmacist · San Francisco, CA NPI 1053695635 Sint Taw Pharmacist · San Francisco, CA NPI 1902172869 Calvin Hui Pharmacist · San Francisco, CA NPI 1528699337
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-05.