Quick answers
- Where does John Grzebieniak see patients?
- Medicare's clinician data lists 2 practice locations, including Lisbon, OH. Call before your visit to confirm the address.
- What is John Grzebieniak's specialty?
- Medicare lists Clinical Psychologist as the primary specialty.
- Does John Grzebieniak accept Medicare assignment?
- Yes. Medicare's clinician data says John Grzebieniak accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John Grzebieniak?
- (330) 424-9573, as listed in official Medicare / NPI Registry data.
- What is John Grzebieniak's NPI number?
- 1437150968. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John Grzebieniak is enrolled with Medicare (CMS data updated 2026-10-02).
- 40722 State Route 154Lisbon, OH 44432 (330) 424‑9573
- PO Box, Suite 429Lisbon, OH 44432
Group practices
Medicare enrollment lists John Grzebieniak as a member of this group (CMS data updated 2026-10-02).
- Columbiana County Mental Health Clinic23 clinicians in the group
Specialties
- Clinical Psychologistprimary
Other clinical psychologists in Ohio
Clinicians with the same Medicare primary specialty in Ohio — not a recommendation.
Clinician information
| Medical school | University Of Pittsburgh School Of Medicine |
|---|---|
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437150968 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians