ALEXANDER E AYALA MD, MPH
NPI 1396262549
Emergency Medicine in San Jose, CA
About Alexander E Ayala Md, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXANDER E AYALA MD, MPH (NPI 1396262549) is an individual emergency medicine provider in San Jose, California, licensed in California (A194701) and active in the NPI registry since August 2017. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Northwestern University Feinberg Medical School (2021).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Alexander E Ayala Md, Mph is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Alexander Ayala reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Jose, CA 95128
- Reassigned Medicare billing, California enrollment
- 197 clinicians in this Medicare group
Pleasant Hill, CA 94523
- Reassigned Medicare billing, California enrollment
- 17 clinicians in this Medicare group
Ukiah, CA 95482
- Reassigned Medicare billing, California enrollment
- 112 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95128 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN JOSE, CA 95128
SAN JOSE, CA 95128
SAN JOSE, CA 95128
SAN JOSE, CA 95128
SAN JOSE, CA 95128
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Alexander Ayala's NPI number?
The NPI number for Alexander Ayala is 1396262549. It was assigned to this individual provider in the NPPES registry on August 28, 2017.
Where is Alexander Ayala located?
Alexander Ayala practices at 751 S Bascom Ave, San Jose, CA 95128. The listed phone number is (916) 216-5829.
What is Alexander Ayala's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Alexander Ayala enrolled in Medicare?
Yes. Alexander Ayala is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Alexander Ayala's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Ayala reassigns Medicare benefits to 3 organizations: Emergency Physicians Associates San Jose PC (San Jose, CA), East Bay Integrated Care, Inc (Pleasant Hill, CA) and Pacific Redwood Medical Group Inc (Ukiah, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Alexander Ayala's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Alexander Ayala was last updated on August 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Alexander E Ayala, MD, MPH · NPI 1396262549
Emergency Medicine physician in San Jose, California. Individual provider, active in the CMS NPPES registry since August 28, 2017.
## Identity
- **NPI:** 1396262549 (Entity type: Individual)
- **Enumerated:** August 28, 2017
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A194701 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 751 S BASCOM AVE, San Jose, CA 95128-2604
- **Phone:** (916) 216-5829
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Emergency Physicians Associates San Jose PC (NPI 1306311576, San Jose, CA); East Bay Integrated Care, Inc (NPI 1205946555, Pleasant Hill, CA); Pacific Redwood Medical Group Inc (NPI 1033103676, Ukiah, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northwestern University Feinberg Medical School, class of 2021
## Record status
- **NPPES last updated:** August 16, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1396262549) · Data from the CMS NPPES public registry.