Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Alexei Adan

Individual provider Emergency Medicine Physician · NPI 1679968978

Alexei Adan practises Emergency Medicine in Castro Valley, California. Graduated from Perelman School of Med at the University of Pennsylvania in 2015, 11 years ago. Practices with Eden Emergency Medical Group Inc, a 27-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
11
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
CA
In the registry since
2015
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Practice location Address checks out

20103 Lake Chabot Rd
Castro Valley, CA 94546-5305
Phone: (510) 727-3015
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A161408 (CA)

Record details

NPI number1679968978
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 2, 2015
Last updated in NPPESFebruary 26, 2021
Certification dateFebruary 26, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 2015 (11 years in practice)
Group practice Eden Emergency Medical Group Inc — 27 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients508
Services billed 889 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Eden Emergency Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 27 clinicians in the practice; 12 are shown here.

Other providers in Castro Valley