John Joseph Ondrejka, MD
Internal Medicine Physician · Mentor, OH
John Joseph Ondrejka, MD is an internal medicine physician with a practice address in Mentor, Ohio, and NPI 1770543159, issued on Mar 28, 2006. Check the license (Ohio 35-055148, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- John Joseph Ondrejka
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 35-055148 OH
Self-reported in NPPES; status is on the state search - Practice location
- 7956 Tyler Blvd, Mentor, OH 44060
- Phone
- (440) 716-1283
- Enumerated
- Mar 28, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (440) 716-1605
- Medicaid ID
- 2073581 OH
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,277 in Ohio → Look up another NPI →
Also registered at 7956 Tyler Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Joseph Ondrejka in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35-055148Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
16 Medicare Part D claims, against an average of 3,176 among the 108,855 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.
John Joseph Ondrejka among 5,277 internal medicine physician records in Ohio
John Joseph Ondrejka, MD is one of 5,277 internal medicine physician records with a practice address in Ohio. 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 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 65% of these records are
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 internal medicine physician records list a practice address in Mentor
They are 15 of the 1,824 NPPES records with a practice address in Mentor, and 5,277 internal medicine physician records in Ohio.
All 5,277 in Ohio → Every provider in Mentor → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- John Baniewicz, MDMentor, OH 440601285740530
- John Barnett, MDMentor, OH 440601225291560
- Stephen Baum, MDMentor, OH 440601396847307
- Nancy Beller, MDMentor, OH 440601598864423
- Nicholas Detore, M.D.Mentor, OH 440601942438197
- Shermeen Farukhi, M.D.Mentor, OH 440601073693925
- Haitham Kousa, M.D.Mentor, OH 440601598774762
- Anju Lele, MDMentor, OH 440601558467423
Common questions
What is John Joseph Ondrejka, MD's NPI number?
John Joseph Ondrejka, MD's National Provider Identifier (NPI) is 1770543159, issued on Mar 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Joseph Ondrejka, MD located?
The NPPES record lists a practice address at 7956 Tyler Blvd, Mentor, OH, 44060. Phone: (440) 716-1283. Providers update this record themselves, so call before visiting.
How can I verify John Joseph Ondrejka, MD's license?
NPPES lists Ohio license number 35-055148, 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 John Joseph Ondrejka, MD prescribe under Medicare Part D?
In 2024, John Joseph Ondrejka, MD had 16 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.