Quick answers
- Where does John Tatar see patients?
- Medicare's clinician data lists 2 practice locations, including Crystal Lake, IL and Edwardsville, IL. Call before your visit to confirm the address.
- What is John Tatar's specialty?
- Medicare lists Optometry as the primary specialty.
- Does John Tatar accept Medicare assignment?
- Yes. Medicare's clinician data says John Tatar 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 Tatar?
- (815) 455-9393, as listed in official Medicare / NPI Registry data.
- What is John Tatar's NPI number?
- 1306623061. 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 Tatar is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 N Virginia StCrystal Lake, IL 60014 (815) 455‑9393
- 2100 Troy RdEdwardsville, IL 62025 (618) 656‑8888
Group practices
Medicare enrollment lists John Tatar as a member of this group (CMS data updated 2026-10-02).
- Christina J. Levi O D P C.65 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Crystal Lake
Clinicians with the same Medicare primary specialty in Crystal Lake, IL — not a recommendation.
Clinician information
| Graduation year | 2023 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1306623061 |
| 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