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

Andrew Jeffry Day

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1336584515

Andrew Jeffry Day practises Endocrinology in Los Angeles, California. Graduated from Temple University School of Medicine in 2013, 13 years ago. Practices with The Regents of the University of California, a 1,414-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
13
Trained at
Temple University School of Medicine
Licensed in
CA
In the registry since
2013
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Practice location Address checks out

200 Med Plaza 365 420 120
Los Angeles, CA 90024
Phone: (805) 494-6920
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence A143775 (CA)

Record details

NPI number1336584515
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMay 1, 2013
Last updated in NPPESAugust 9, 2018

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolTEMPLE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice The Regents Of The University Of California — 1414 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

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 patients604
Services billed 1,962 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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 The Regents of the University of California

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1414 clinicians in the practice; 12 are shown here.

Other providers in Los Angeles