Mark Thornton, D.O.
Emergency Medicine Physician · Dayton, OH
Mark Thornton, D.O. is an emergency medicine physician with a practice address in Dayton, Ohio, and NPI 1629203112, issued on May 27, 2009. Check the license (Ohio 34.010681, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Mark Thornton
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 34.010681 OH
58.002831 OH
Self-reported in NPPES; status is on the state search - Practice location
- 405 W Grand Ave, Dayton, OH 45405
- Phone
- (937) 723-3211
- Enumerated
- May 27, 2009
- Record last updated
- Mar 31, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130409000629); accepts Medicare assignment
- Medical or professional school
- Ohio Medical University, 2008
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,002 in Ohio → Look up another NPI →
Also registered at 405 W Grand Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rachel AbercrombieStudent in an Organized Health Care Education/Training Program1790589794
- Emmanuel Aguh, M.D.Family Medicine Physician1588058549
- Ammar Ahmad, MDInternal Medicine Physician1366905390
- Shahzad Akbar, MDInternal Medicine Physician1326675661
- Radhika Akella, MDHospitalist Physician1619905601
- Peter Albrecht, DOVascular Surgery Physician1457858904
Verify Mark Thornton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 34.010681Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average emergency medicine physician in 2024
90 Medicare Part D claims for 69 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 21 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen20 claims
- Ondansetron Odt11 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
- Emergency Medicine Specialists IncKettering, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Thornton among 3,002 emergency medicine physician records in Ohio
Mark Thornton, D.O. is one of 3,002 emergency medicine physician records with a practice address in Ohio. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 48% of them.
- NPI issued2009 · 48% of these records are older, 49% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2008 · median 2013 among the 1,720 with a school on file
- Record last updated2021 · 60% 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 Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
119 emergency medicine physician records list a practice address in Dayton
They are 119 of the 12,431 NPPES records with a practice address in Dayton, and 3,002 emergency medicine physician records in Ohio.
All 3,002 in Ohio → Every provider in Dayton → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Jeffrey Amburgey, DODayton, OH 454051124373998
- Craig Dues, D.O.Dayton, OH 454051508879776
- Martin Dunsky, D.O.Dayton, OH 454051760495949
- Jeremy Jackson, D.O., M.P.H.Dayton, OH 454051902244312
- George Kaiser, D.O.Dayton, OH 454051891808002
- David Lazenby, D.O.Dayton, OH 454051992143531
- Charles McIntosh, DODayton, OH 454051215080049
- Christopher McIntosh, D.O.Dayton, OH 454051316272149
Common questions
What is Mark Thornton, D.O.'s NPI number?
Mark Thornton, D.O.'s National Provider Identifier (NPI) is 1629203112, issued on May 27, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mark Thornton, D.O. located?
The NPPES record lists a practice address at 405 W Grand Ave, Dayton, OH, 45405. Phone: (937) 723-3211. Providers update this record themselves, so call before visiting.
How can I verify Mark Thornton, D.O.'s license?
NPPES lists Ohio license number 34.010681, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Thornton, D.O. prescribe under Medicare Part D?
In 2024, Mark Thornton, D.O. had 90 Medicare Part D claims for 69 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Mark Thornton, 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.