John Mizenko, D.O.
NPI 1417958703 · Gastroenterology Physician · Warrensville Heights, OH
John Mizenko, D.O. is a Gastroenterology Physician provider in Warrensville Heights, OH (NPI 1417958703).
Provider details
- NPI number
- 1417958703
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- License
- 34001263M (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Mizenko's NPI number?
- John Mizenko's National Provider Identifier (NPI) is 1417958703, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mizenko's specialty?
- John Mizenko is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is John Mizenko located?
- John Mizenko's practice location on file with NPPES is 4100 Warrensville Center Rd, Warrensville Heights, OH 44122-7024.
- What is John Mizenko's phone number?
- The practice phone number listed in the NPPES registry for John Mizenko is (216) 561-0801.
- Is John Mizenko's NPI active?
- Yes — John Mizenko's NPI (1417958703) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.