Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Jeremy Diego Martinez, MD

Individual provider Health Maintenance Organization · NPI 1649362534

Dr. Jeremy Diego Martinez, MD practises Emergency Medicine in Elk Grove, California. Graduated from Js Weill Medical College, Cornell University in 1999, 27 years ago. Practices with American Specialty Physicians Group Inc, a 92-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
27
Trained at
Js Weill Medical College, Cornell University
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

9521 Newington Way
Elk Grove, CA 95758-4443 Not confirmed with CMS for 13 years — call before visiting
Phone: (916) 432-0109
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Health Maintenance Organization (primary) Taxonomy 302R00000X · Licence A78740 (CA)

Record details

NPI number1649362534
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 28, 2006
Last updated in NPPESApril 19, 2013

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolJS WEILL MEDICAL COLLEGE, CORNELL UNIVERSITY
Graduated 1999 (27 years in practice)
Group practice American Specialty Physicians Group Inc — 92 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 patients440
Services billed 902 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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. Those with a page here are linked.

Colleagues at American Specialty Physicians Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 92 clinicians in the practice; 12 are shown here.

Other providers in Elk Grove