Quick answers
- Where does John Thesing see patients?
- Medicare's clinician data lists 1 practice location in Winfield, KS. Call before your visit to confirm the address.
- What is John Thesing's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does John Thesing accept Medicare assignment?
- Yes. Medicare's clinician data says John Thesing 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 Thesing?
- (620) 222-6270, as listed in official Medicare / NPI Registry data.
- What is John Thesing's NPI number?
- 1770274664. 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 Thesing is enrolled with Medicare (CMS data updated 2026-10-02).
- 1300 E 5th AveWinfield, KS 67156 (620) 222‑6270
Group practices
Medicare enrollment lists John Thesing as a member of this group (CMS data updated 2026-10-02).
- William Newton Memorial Hospital42 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Winfield
Clinicians with the same Medicare primary specialty in Winfield, KS — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2023 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1770274664 |
| 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