John J. Mizenko, D.O.
Gastroenterology Physician · Warrensville Heights, OH
John J. Mizenko, D.O. is a gastroenterology physician with a practice address in Warrensville Heights, Ohio, and NPI 1417958703, issued on Aug 9, 2005. Check the license (Ohio 34001263M, as entered in NPPES) on the State Medical Board of Ohio; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John J. Mizenko
- Credential
- D.O.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 34001263M OH
Self-reported in NPPES; status is on the state search - Practice location
- 4100 Warrensville Center RD, Warrensville Heights, OH 44122
- Phone
- (216) 561-0801
- Enumerated
- Aug 9, 2005
- Record last updated
- Jul 13, 2026
- Medicaid ID
- 0089961 OH
- Entity
- Type 1 · individual
Also registered at 4100 Warrensville Center RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amy Knowlton, CTRSRecreation Therapist1194922518
Verify John J. Mizenko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 34001263MCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Gastroenterology Physician providers in Ohio
There are 741 gastroenterology physician records in Ohio. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other gastroenterology physician records in Ohio
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- Fayez Abboud, M.D.Troy, OH1427059013
- Sulieman Abdal Raheem, MDNorwalk, OH1134381742
- Jason Abdallah, M.D.Cuyahoga Falls, OH1093071565
- Ala' Abdel Jalil, M.D.Cleveland, OH1427267871
- Mohammad Abdrabbo, MDMontgomery, OH1104828201
- Ashraf Abushahin, MDFairview Park, OH1205383759
- Suha Abushamma, M.D.Cleveland, OH1134571342
- Chathur Acharya, MDColumbus, OH1962630731
- Edgar Achkar, MDCleveland, OH1881659688
Common questions
What is John J. Mizenko, D.O.'s NPI number?
John J. Mizenko, D.O.'s National Provider Identifier (NPI) is 1417958703, issued on Aug 9, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John J. Mizenko, D.O. located?
The NPPES record lists a practice address at 4100 Warrensville Center RD, Warrensville Heights, OH, 44122. Phone: (216) 561-0801. Providers update this record themselves, so call before visiting.
How can I verify John J. Mizenko, D.O.'s license?
NPPES lists Ohio license number 34001263M, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.