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

John Mark Sawyer, MD

Individual provider Emergency Medicine Physician · NPI 1174082176

John Mark Sawyer, MD practises Emergency Medicine in Los Angeles, California. Graduated from Medical University of South Carolina College of Medicine in 2019, 7 years ago. Practices with Cep America - California, a 1,267-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
7
Trained at
Medical University of South Carolina College of Medicine
Licensed in
CA
In the registry since
2019
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

924 Westwood Blvd Ste 300
Los Angeles, CA 90024-2924
Phone: (310) 794-0785
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2228 Baxter St, Los Angeles, CA 90039-3602 — (803) 206-5526

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A178772 (CA)

Record details

NPI number1174082176
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 19, 2019
Last updated in NPPESMarch 20, 2024
Certification dateMarch 20, 2024

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolMEDICAL UNIVERSITY OF SOUTH CAROLINA COLLEGE OF MEDICINE
Graduated 2019 (7 years in practice)
Group practice Cep America - California — 1267 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 patients477
Services billed 866 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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 Cep America - California

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1267 clinicians in the practice; 12 are shown here.

Other providers in Los Angeles