Michael Mazak, OTR
NPI 1891994364 · Occupational Therapist · Ontario, OH
Enrolled with Medicare as Practitioner - Occupational Therapist in Private Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Mazak, OTR is a Occupational Therapist provider in Ontario, OH (NPI 1891994364).
Provider details
- NPI number
- 1891994364
- Entity type
- Individual
- Primary specialty
- Occupational TherapistRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- OTR
- Sex
- Male
- Sole proprietor
- Yes
- License
- OT-5497 (OH)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2007-07-16
- Last updated
- 2014-11-24
Frequently asked questions
- What is Michael Mazak's NPI number?
- Michael Mazak's National Provider Identifier (NPI) is 1891994364, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Mazak's specialty?
- Michael Mazak is listed in the NPPES registry with a primary specialty of Occupational Therapist (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Michael Mazak located?
- Michael Mazak's practice location on file with NPPES is 2291 W 4th St, Ontario, OH 44906-1261.
- What is Michael Mazak's phone number?
- The practice phone number listed in the NPPES registry for Michael Mazak is (419) 589-2238.
- Does Michael Mazak accept Medicare?
- Michael Mazak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Mazak's NPI active?
- Yes — Michael Mazak's NPI (1891994364) is active in the NPPES registry as of the last update on 2014-11-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.