Quick answers
- Which hospitals does Jason Wellen work at?
- Medicare's official clinician data lists Jason Wellen at 3 hospitals: Barnes Jewish Hospital, Herrin Hospital and Missouri Baptist Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jason Wellen see patients?
- Medicare's clinician data lists 2 practice locations, including Saint Louis, MO and St Louis, MO. Call before your visit to confirm the address.
- What is Jason Wellen's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Jason Wellen accept Medicare assignment?
- Yes. Medicare's clinician data says Jason Wellen 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 Jason Wellen?
- (314) 362-9355, as listed in official Medicare / NPI Registry data.
- What is Jason Wellen's NPI number?
- 1134331382. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jason Wellen works
Medicare's Facility Affiliation Data lists Jason Wellen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Barnes Jewish HospitalSaint Louis, MO · Acute Care Hospital · CCN 260032
- Herrin HospitalHerrin, IL · Acute Care Hospital · CCN 140011
- Missouri Baptist Medical CenterSaint Louis, MO · Acute Care Hospital · CCN 260108
Practice locations
Addresses where Jason Wellen is enrolled with Medicare (CMS data updated 2026-10-02).
- 216 S Kingshighway BlvdSaint Louis, MO 63110 (314) 362‑9355
- 660 S Euclid Ave, Campus Box 8109St Louis, MO 63110 (314) 362‑7841
Group practices
Medicare enrollment lists Jason Wellen as a member of this group (CMS data updated 2026-10-02).
- Washington University3,029 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1134331382 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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