John Mark Sawyer, MD
Emergency Medicine Physician · Los Angeles, CA
John Mark Sawyer, MD is an emergency medicine physician with a practice address in Los Angeles, California, and NPI 1174082176, issued on Mar 19, 2019. Check the license (California A178772, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Mark Sawyer
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A178772 CA
Self-reported in NPPES; status is on the state search - Practice location
- 924 Westwood Blvd Ste 300, Los Angeles, CA 90024
- Phone
- (310) 794-0785
- Enumerated
- Mar 19, 2019
- Record last updated
- Mar 20, 2024
- Medicare enrollment
- Enrolled (PECOS I20230207003621); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 924 Westwood Blvd Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- David Bernheimer, M.D.Emergency Medicine Physician1447420286
- Brainard Burrus, MDStudent in an Organized Health Care Education/Training Program1831776889
- Alexandra DyerEmergency Medicine Physician1326465501
- Brandon EndoEmergency Medicine Physician1144648841
- Vanessa Franco, M.D., PH.D.Sports Medicine (Emergency Medicine) Physician1306188727
- Wesley Gaschler, M.D.Emergency Medicine Physician1083956338
Verify John Mark Sawyer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A178772Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% more Medicare Part D claims than the average emergency medicine physician in 2024
234 Medicare Part D claims for 178 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 15 claims were for opioids.
Most prescribed
- Prednisone18 claims
- Cephalexin16 claims
- Ibuprofen16 claims
- Cefpodoxime Proxetil15 claims
- Cefdinir12 claims
- Ondansetron Odt12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 94.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Cep America - CaliforniaLong Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Mark Sawyer among 7,751 emergency medicine physician records in California
John Mark Sawyer, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2019 · median 2011 among the 4,560 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Los Angeles → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Ashkan Akasheh, M.D.Los Angeles, CA 900241790074243
- David Bernheimer, M.D.Los Angeles, CA 900241447420286
- Joseph Chan, M.D.Los Angeles, CA 900241477847994
- Alexandra DyerLos Angeles, CA 900241326465501
- Brandon Firestone, M.D.Los Angeles, CA 900241487996161
- Wesley Gaschler, M.D.Los Angeles, CA 900241083956338
- Delaram Ghadishah, M.D.Los Angeles, CA 900241417909573
- Simone Gold, M.D.Los Angeles, CA 900241851341895
Common questions
What is John Mark Sawyer, MD's NPI number?
John Mark Sawyer, MD's National Provider Identifier (NPI) is 1174082176, issued on Mar 19, 2019. An NPI identifies a provider in billing; it is not a license.
Where is John Mark Sawyer, MD located?
The NPPES record lists a practice address at 924 Westwood Blvd Ste 300, Los Angeles, CA, 90024. Phone: (310) 794-0785. Providers update this record themselves, so call before visiting.
How can I verify John Mark Sawyer, MD's license?
NPPES lists California license number A178772, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Mark Sawyer, MD prescribe under Medicare Part D?
In 2024, John Mark Sawyer, MD had 234 Medicare Part D claims for 178 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is John Mark Sawyer, MD's MIPS final score?
The 2023 MIPS final score is 94.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.