Quick answers
- Where does Jonathan Grischkan see patients?
- Medicare's clinician data lists 4 practice locations, including Toledo, OH and Columbus, OH. Call before your visit to confirm the address.
- What is Jonathan Grischkan's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does Jonathan Grischkan accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan Grischkan 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 Jonathan Grischkan?
- (419) 475-1600, as listed in official Medicare / NPI Registry data.
- What is Jonathan Grischkan's NPI number?
- 1548486715. 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 Jonathan Grischkan is enrolled with Medicare (CMS data updated 2026-10-02).
- 2213 Cherry StToledo, OH 43608
- 3900 Sunforest Ct, Suite 240Toledo, OH 43623 (419) 475‑1600
- 700 Children'S DrColumbus, OH 43205 (614) 722‑2000
- 700 Childrens DrColumbus, OH 43205
Group practices
Medicare enrollment lists Jonathan Grischkan as a member of these groups (CMS data updated 2026-10-02).
- Mercy Health Physicians North Specialty Care LLC355 clinicians in the group
- Nationwide Children's Hospital142 clinicians in the group
- Children's Surgical Associates, Corporation50 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Toledo
Clinicians with the same Medicare primary specialty in Toledo, OH — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548486715 |
| 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