Quick answers
- Where does John D. Szewczyk see patients?
- Medicare's clinician data lists 4 practice locations, including Saint Louis, MO, St Louis, MO and Saint Loius, MO. Call before your visit to confirm the address.
- What is John D. Szewczyk's specialty?
- Medicare lists Optometry as the primary specialty.
- Does John D. Szewczyk accept Medicare assignment?
- Yes. Medicare's clinician data says John D. Szewczyk 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 D. Szewczyk?
- (314) 362-3937, as listed in official Medicare / NPI Registry data.
- What is John D. Szewczyk's NPI number?
- 1275264996. 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 D. Szewczyk is enrolled with Medicare (CMS data updated 2026-10-02).
- 401 Holly Hills AveSaint Louis, MO 63111
- 401 Holly Hills AveSt Louis, MO 63111
- 4901 Forest Park Ave, Fl 6Saint Louis, MO 63108 (314) 362‑3937
- 7840 Natural Bridge RdSaint Loius, MO 63121 (314) 516‑5131
Group practices
Medicare enrollment lists John D. Szewczyk as a member of these groups (CMS data updated 2026-10-02).
- Washington University3,029 clinicians in the group
- Family Care Health Centers50 clinicians in the group
- Curators of the University of Missouri19 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Medical school | New England College Of Optometry |
| Graduation year | 2022 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275264996 |
| 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