Mark E. Thomas, D.O.
Emergency Medicine Physician · Moreno Valley, CA
Mark E. Thomas, D.O. is an emergency medicine physician with a practice address in Moreno Valley, California, and NPI 1669587614, issued on Aug 20, 2006. Check the license (California 20A5977, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark E. Thomas
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 20A5977 CA
Self-reported in NPPES; status is on the state search - Practice location
- 26520 Cactus Ave, Moreno Valley, CA 92555
- Phone
- (909) 486-5650
- Enumerated
- Aug 20, 2006
- Record last updated
- Nov 13, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 00AX59770 CA
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 26520 Cactus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ihab Abed, MDStudent in an Organized Health Care Education/Training Program1912830514
- Mohamed Abu-Qaoud, M.D.Internal Medicine Physician1366635534
- Barbara Ackerman, PH.D.Clinical Psychologist1639126410
- Sana Afroz, MDRheumatology Physician1356724074
- Georgina Aguilar-Portillo, MDFamily Medicine Physician1144804691
- Adolfo Aguilera, MDFamily Medicine Physician1477609808
Verify Mark E. Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A5977Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average emergency medicine physician in 2024
38 Medicare Part D claims for 30 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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).
Mark E. Thomas among 7,751 emergency medicine physician records in California
Mark E. Thomas, D.O. 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2007 · 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).
37 emergency medicine physician records list a practice address in Moreno Valley
They are 37 of the 2,698 NPPES records with a practice address in Moreno Valley, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Moreno Valley → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Samnuel Chua, M.D.Moreno Valley, CA 925551699880724
- VI Dinh, M.D.Moreno Valley, CA 925551699919647
- Radu Dudas, M.D.Moreno Valley, CA 925551629318241
- Robin Fisher, DOMoreno Valley, CA 925551295875185
- Sarah Leaf, M.D.Moreno Valley, CA 925551487064861
- Victor Levine, M.D.Moreno Valley, CA 925551386786374
- John Naftel, M.D.Moreno Valley, CA 925551124133293
- Timothy Nesper, M.D.Moreno Valley, CA 925551629183710
Common questions
What is Mark E. Thomas, D.O.'s NPI number?
Mark E. Thomas, D.O.'s National Provider Identifier (NPI) is 1669587614, issued on Aug 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark E. Thomas, D.O. located?
The NPPES record lists a practice address at 26520 Cactus Ave, Moreno Valley, CA, 92555. Phone: (909) 486-5650. Providers update this record themselves, so call before visiting.
How can I verify Mark E. Thomas, D.O.'s license?
NPPES lists California license number 20A5977, 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 Mark E. Thomas, D.O. prescribe under Medicare Part D?
In 2024, Mark E. Thomas, D.O. had 38 Medicare Part D claims for 30 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Mark E. Thomas, D.O.'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.