Quick answers
- Where does Mark D. Hahn see patients?
- Medicare's clinician data lists 1 practice location in Pekin, IL. Call before your visit to confirm the address.
- What is Mark D. Hahn's specialty?
- Medicare lists Optometry as the primary specialty.
- Does Mark D. Hahn accept Medicare assignment?
- Yes. Medicare's clinician data says Mark D. Hahn 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 Mark D. Hahn?
- (309) 353-9313, as listed in official Medicare / NPI Registry data.
- What is Mark D. Hahn's NPI number?
- 1528055969. 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 Mark D. Hahn is enrolled with Medicare (CMS data updated 2026-10-02).
- 3287 Court StPekin, IL 61554 (309) 353‑9313
Group practices
Medicare enrollment lists Mark D. Hahn as a member of this group (CMS data updated 2026-10-02).
- J A K Enterprises Inc25 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Pekin
Clinicians with the same Medicare primary specialty in Pekin, IL — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Medical school | Illinois College Of Optometry At Chicago |
| Graduation year | 2000 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1528055969 |
| 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