Quick answers
- Which hospitals does Andrew J. Day work at?
- Medicare's official clinician data lists Andrew J. Day at 3 hospitals: Antelope Valley Hospital, Ridgecrest Regional Hospital and Ronald Reagan UCLA Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Andrew J. Day see patients?
- Medicare's clinician data lists 4 practice locations, including Encino, CA, Santa Monica, CA and Valencia, CA. Call before your visit to confirm the address.
- What is Andrew J. Day's specialty?
- Medicare lists Endocrinology as the primary specialty, and also Internal Medicine.
- Does Andrew J. Day accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew J. Day 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.
- Does Andrew J. Day offer telehealth?
- Medicare's clinician data says Andrew J. Day offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Andrew J. Day?
- (818) 461-8148, as listed in official Medicare / NPI Registry data.
- What is Andrew J. Day's NPI number?
- 1336584515. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Andrew J. Day works
Medicare's Facility Affiliation Data lists Andrew J. Day at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Antelope Valley HospitalLancaster, CA · Acute Care Hospital · CCN 050056
- Ridgecrest Regional HospitalRidgecrest, CA · Critical Access Hospital · CCN 051333
- Ronald Reagan UCLA Medical CenterLos Angeles, CA · Acute Care Hospital · CCN 050262
Practice locations
Addresses where Andrew J. Day is enrolled with Medicare (CMS data updated 2026-10-02).
- 15503 Ventura BlvdEncino, CA 91436 (818) 461‑8148
- 2020 Santa Monica Blvd, Suite 210Santa Monica, CA 90404 (310) 458‑2381
- 25775 McBean PkwyValencia, CA 91355
- 2625 W Alameda Ave, Suite 322Burbank, CA 91505 (818) 843‑9015
Group practices
Medicare enrollment lists Andrew J. Day as a member of this group (CMS data updated 2026-10-02).
- The Regents of the University of California1,462 clinicians in the group
Specialties
- Endocrinologyprimary
- Internal Medicinealso
Other endocrinologists in Encino
Clinicians with the same Medicare primary specialty in Encino, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Temple University School Of Medicine |
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1336584515 |
| 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