Larry Tsan Lam, PHARM.D.
Pharmacist · Irvine, CA
Larry Tsan Lam, PHARM.D. is a pharmacist with a practice address in Irvine, California, and NPI 1639587595, issued on Jul 23, 2014. Check the license (California 67916, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Larry Tsan Lam
- Credential
- PHARM.D.
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 67916 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3901 Portola Pkwy, Irvine, CA 92602
- Phone
- (657) 273-5755
- Enumerated
- Jul 23, 2014
- Record last updated
- Sep 29, 2023
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 32,533 in California → Look up another NPI →
Also registered at 3901 Portola Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Hsieh, RPHPharmacist1194025478
- Jocenyn Palisoc, RPHPharmacist1871893289
Verify Larry Tsan Lam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 67916Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 91% of the cost of the top drugs
80 Medicare Part D claims for 73 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 100% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Arexvy31 claims
- Shingrix21 claims
- Boostrix Tdap20 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Larry Tsan Lam among 32,533 pharmacist records in California
Larry Tsan Lam, PHARM.D. is one of 32,533 pharmacist records with a practice address in California. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 35% of them.
- NPI issued2014 · 35% of these records are older, 59% newer
- In a Medicare fileYes · 15% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2023 · 76% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 183500000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
284 pharmacist records list a practice address in Irvine
They are 284 of the 7,778 NPPES records with a practice address in Irvine, and 32,533 pharmacist records in California.
All 32,533 in California → Every provider in Irvine → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Celso Catipon, PHARM.D.Irvine, CA 926021356618656
- Priyanka DoshiIrvine, CA 926021245507540
- Dipa Doshi, RPHIrvine, CA 926021528336468
- Mary Hsieh, RPHIrvine, CA 926021194025478
- Eunice Lee, PHARMDIrvine, CA 926021902149453
- Joanna Ma, PHARM.D.Irvine, CA 926021114228939
- Cang Nguyen, PHARM-DIrvine, CA 926021104957448
- Jocenyn Palisoc, RPHIrvine, CA 926021871893289
Common questions
What is Larry Tsan Lam, PHARM.D.'s NPI number?
Larry Tsan Lam, PHARM.D.'s National Provider Identifier (NPI) is 1639587595, issued on Jul 23, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Larry Tsan Lam, PHARM.D. located?
The NPPES record lists a practice address at 3901 Portola Pkwy, Irvine, CA, 92602. Phone: (657) 273-5755. Providers update this record themselves, so call before visiting.
How can I verify Larry Tsan Lam, PHARM.D.'s license?
NPPES lists California license number 67916, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Larry Tsan Lam, PHARM.D. prescribe under Medicare Part D?
In 2024, Larry Tsan Lam, PHARM.D. had 80 Medicare Part D claims for 73 beneficiaries; the average among pharmacist prescribers was 119. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.