Alexandra Mai Tamayo Tong, PA-C
Physician Assistant · San Leandro, CA
Alexandra Mai Tamayo Tong, PA-C is a physician assistant with a practice address in San Leandro, California, and NPI 1548803562, issued on Oct 22, 2019. Check the license (California 58584, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Alexandra Mai Tamayo Tong
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 58584 CA
085.007310 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2500 Merced St, San Leandro, CA 94577
- Phone
- (510) 454-7300
- Enumerated
- Oct 22, 2019
- Record last updated
- Feb 6, 2025
- Medicare enrollment
- Enrolled (PECOS I20210329001148); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 14,451 in California → Look up another NPI →
Also registered at 2500 Merced St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alexandra Mai Tamayo Tong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 58584Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average physician assistant in 2024
236 Medicare Part D claims for 97 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 65 claims were for opioids.
Most prescribed
- Ondansetron Odt52 claims
- Omeprazole39 claims
- Oxycodone Hcl36 claims
- Ibuprofen29 claims
- Meloxicam28 claims
- Tramadol Hcl17 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.
Bills Medicare through one group practice
- Permanente Medical Group IncRichmond, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexandra Mai Tamayo Tong among 14,451 physician assistant records in California
Alexandra Mai Tamayo Tong, PA-C is one of 14,451 physician assistant records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 56% of them.
- NPI issued2019 · 56% of these records are older, 38% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2019 · median 2018 among the 7,214 with a school on file
- Record last updated2025 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Physician Assistant providers in California
There are 14,451 physician assistant records in California.
All 14,451 in California → Every provider in San Leandro → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Emily Choi, PA-CSan Leandro, CA 945771750920609
- Kathleen Chu, PA-CSan Leandro, CA 945771578734455
- Natalie Griffin, PASan Leandro, CA 945771609499326
- Alexander Hoffman, PA-CSan Leandro, CA 945771740731066
- Craig Humes, PA-CSan Leandro, CA 945771164775839
- Michael Jones, PA-CSan Leandro, CA 945771730235136
- Jennifer Katsuyama, PA-CSan Leandro, CA 945771841513900
- Makenna KummerSan Leandro, CA 945771144863408
Common questions
What is Alexandra Mai Tamayo Tong, PA-C's NPI number?
Alexandra Mai Tamayo Tong, PA-C's National Provider Identifier (NPI) is 1548803562, issued on Oct 22, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Alexandra Mai Tamayo Tong, PA-C located?
The NPPES record lists a practice address at 2500 Merced St, San Leandro, CA, 94577. Phone: (510) 454-7300. Providers update this record themselves, so call before visiting.
How can I verify Alexandra Mai Tamayo Tong, PA-C's license?
NPPES lists California license number 58584, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Alexandra Mai Tamayo Tong, PA-C prescribe under Medicare Part D?
In 2024, Alexandra Mai Tamayo Tong, PA-C had 236 Medicare Part D claims for 97 beneficiaries; the average among physician assistant prescribers was 830. 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.