Alejandro Guan
Pharmacist · Brentwood, CA
Alejandro Guan is a pharmacist with a practice address in Brentwood, California, and NPI 1164972121, issued on Oct 13, 2016. Check the license (California 75430, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alejandro Guan
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 75430 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2643 Presidio Dr, Brentwood, CA 94513
- Phone
- (925) 481-4921
- Enumerated
- Oct 13, 2016
- Record last updated
- Oct 13, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 32,533 in California → Look up another NPI →
Verify Alejandro Guan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 75430Check 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, 100% of the cost of the top drugs
52 Medicare Part D claims for 48 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 98% 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.
- Shingrix21 claims
- Abrysvo15 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.
Alejandro Guan among 32,533 pharmacist records in California
Alejandro Guan 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 2016, is newer than 47% of them.
- NPI issued2016 · 47% of these records are older, 47% 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 updated2016 · 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).
34 pharmacist records list a practice address in Brentwood
They are 34 of the 1,212 NPPES records with a practice address in Brentwood, and 32,533 pharmacist records in California.
All 32,533 in California → Every provider in Brentwood → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Trease BeskalessBrentwood, CA 945131588937080
- Michelle Chang, PHARMDBrentwood, CA 945131356642631
- Chibogwu Chika, RPHBrentwood, CA 945131851692982
- Susan DhamiBrentwood, CA 945131699187278
- David Hwang, PHARM D.Brentwood, CA 945131700186855
- Grace Lan, PHARM.D.Brentwood, CA 945131013253608
- Clive Lin, PHARMACISTBrentwood, CA 945131003229824
- Kim Robertson, RPHBrentwood, CA 945131942587167
Common questions
What is Alejandro Guan's NPI number?
Alejandro Guan's National Provider Identifier (NPI) is 1164972121, issued on Oct 13, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Alejandro Guan located?
The NPPES record lists a practice address at 2643 Presidio Dr, Brentwood, CA, 94513. Phone: (925) 481-4921. Providers update this record themselves, so call before visiting.
How can I verify Alejandro Guan's license?
NPPES lists California license number 75430, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Alejandro Guan prescribe under Medicare Part D?
In 2024, Alejandro Guan had 52 Medicare Part D claims for 48 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.