Quick answers
- Which hospitals does Alexei Adan work at?
- Medicare's official clinician data lists Alexei Adan at 1 hospital: Eden Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alexei Adan see patients?
- Medicare's clinician data lists 1 practice location in Castro Valley, CA. Call before your visit to confirm the address.
- What is Alexei Adan's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Alexei Adan accept Medicare assignment?
- Yes. Medicare's clinician data says Alexei Adan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Alexei Adan?
- (510) 537-1234, as listed in official Medicare / NPI Registry data.
- What is Alexei Adan's NPI number?
- 1679968978. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alexei Adan works
Medicare's Facility Affiliation Data lists Alexei Adan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Eden Medical CenterCastro Valley, CA · Acute Care Hospital · CCN 050488
Practice locations
Addresses where Alexei Adan is enrolled with Medicare (CMS data updated 2026-10-02).
- 20103 Lake Chabot RdCastro Valley, CA 94546 (510) 537‑1234
Group practices
Medicare enrollment lists Alexei Adan as a member of this group (CMS data updated 2026-10-02).
- Eden Emergency Medical Group Inc28 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Castro Valley
Clinicians with the same Medicare primary specialty in Castro Valley, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Perelman School Of Med At The University Of Pennsylvania |
| Graduation year | 2015 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1679968978 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians