Alex Ritter
Radiation Oncology Physician · Marion, OH
Alex Ritter is a radiation oncology physician with a practice address in Marion, Ohio, and NPI 1336608421, issued on Mar 18, 2019. Check the license (Ohio 35.154707, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Alex Ritter
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 35.154707 OH
33857 WV
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Mckinley Park Dr, Marion, OH 43302
- Phone
- (740) 375-2275
- Enumerated
- Mar 18, 2019
- Record last updated
- Nov 24, 2025
- Medicare enrollment
- Enrolled (PECOS I20240917004876); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 298 in Ohio → Look up another NPI →
Also registered at 1000 Mckinley Park Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samer Abubakr, MDHospitalist Physician1235260464
- Nosayaba Agidigbi, MDHospitalist Physician1356572879
- Anas Ahmed, MDHospitalist Physician1841797750
- Imtiaz Ahmed, M.D.Interventional Cardiology Physician1407916505
- Alicia Alvarado, CNPFamily Nurse Practitioner1487194536
- Goitom Asgedom, MDHospitalist Physician1548574296
Verify Alex Ritter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35.154707Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average radiation oncology physician in 2024
27 Medicare Part D claims for 15 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through 2 group practices
- Ohiohealth CorporationDelaware, OH
- West Virginia University Medical CorporationMorgantown, WV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alex Ritter among 298 radiation oncology physician records in Ohio
Alex Ritter is one of 298 radiation oncology physician records with a practice address in Ohio. 83% 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 92% of them.
- NPI issued2019 · 92% of these records are older, 6% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2019 · median 2008 among the 226 with a school on file
- Record last updated2025 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Ohio
There are 298 radiation oncology physician records in Ohio.
All 298 in Ohio → Every provider in Marion → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Jeanne Ashworth, MDMarion, OH 433021720065576
- Chelsea MillerMarion, OH 433021598150708
- Reinhard Gahbauer, MDColumbus, OH 432351710085519
- Thomas Anderson, DOColumbus, OH 432281003858234
- Young Cho, M.D.Columbus, OH 432221285623322
- Abhay Gokhale, M.D.Columbus, OH 432221528371937
- Douglas Widman, MDColumbus, OH 432221669461828
- Louis Rivello, MDColumbus, OH 432191598754848
Common questions
What is Alex Ritter's NPI number?
Alex Ritter's National Provider Identifier (NPI) is 1336608421, issued on Mar 18, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Alex Ritter located?
The NPPES record lists a practice address at 1000 Mckinley Park Dr, Marion, OH, 43302. Phone: (740) 375-2275. Providers update this record themselves, so call before visiting.
How can I verify Alex Ritter's license?
NPPES lists Ohio license number 35.154707, 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 Alex Ritter prescribe under Medicare Part D?
In 2024, Alex Ritter had 27 Medicare Part D claims for 15 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
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.