Alexander E. Ayala, MD, MPH
Emergency Medicine Physician · San Jose, CA
Alexander E. Ayala, MD, MPH is an emergency medicine physician with a practice address in San Jose, California, and NPI 1396262549, issued on Aug 28, 2017. Check the license (California A194701, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alexander E. Ayala
- Credential
- MD, MPH
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A194701 CA
Self-reported in NPPES; status is on the state search - Practice location
- 751 S Bascom Ave, San Jose, CA 95128
- Phone
- (916) 216-5829
- Enumerated
- Aug 28, 2017
- Record last updated
- Aug 16, 2025
- Medicare enrollment
- Enrolled (PECOS I20240801000847); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 2021
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 751 S Bascom Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Cherine Abu-Eid, MDAnesthesiology Physician1033173307
- Pallavi AcharyaClinical Social Worker1154807873
Verify Alexander E. Ayala in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A194701Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average emergency medicine physician in 2024
142 Medicare Part D claims for 38 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Clopidogrel11 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 2 group practices
- Emergency Physicians Associates San Jose PCSan Jose, CA
- Pacific Redwood Medical Group IncClearlake, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander E. Ayala among 7,751 emergency medicine physician records in California
Alexander E. Ayala, MD, MPH is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 78% of them.
- NPI issued2017 · 78% of these records are older, 19% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2021 · median 2011 among the 4,560 with a school on file
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in San Jose → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Meenesh Bhimani, MDSan Jose, CA 951281598712069
- Jan Bravo, MDSan Jose, CA 951281083651657
- Michael Chin, MDSan Jose, CA 951281700824042
- Howard Davis, MDSan Jose, CA 951281164464319
- Joan Gates, M.D.San Jose, CA 951281245213727
- Steve Germany, DOSan Jose, CA 951281326076241
- Gregory Groetsema, MDSan Jose, CA 951281790727873
- Benjamin Hafkenschiel, MDSan Jose, CA 951281710940457
Common questions
What is Alexander E. Ayala, MD, MPH's NPI number?
Alexander E. Ayala, MD, MPH's National Provider Identifier (NPI) is 1396262549, issued on Aug 28, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Alexander E. Ayala, MD, MPH located?
The NPPES record lists a practice address at 751 S Bascom Ave, San Jose, CA, 95128. Phone: (916) 216-5829. Providers update this record themselves, so call before visiting.
How can I verify Alexander E. Ayala, MD, MPH's license?
NPPES lists California license number A194701, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Alexander E. Ayala, MD, MPH prescribe under Medicare Part D?
In 2024, Alexander E. Ayala, MD, MPH had 142 Medicare Part D claims for 38 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.