Quick answers
- Which hospitals does Kelly Ludwig work at?
- Medicare's official clinician data lists Kelly Ludwig at 1 hospital: Mercy Hospital South. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Kelly Ludwig see patients?
- Medicare's clinician data lists 2 practice locations, including Saint Louis, MO. Call before your visit to confirm the address.
- What is Kelly Ludwig's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Kelly Ludwig accept Medicare assignment?
- Yes. Medicare's clinician data says Kelly Ludwig 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 Kelly Ludwig?
- (314) 525-3423, as listed in official Medicare / NPI Registry data.
- What is Kelly Ludwig's NPI number?
- 1992720361. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Kelly Ludwig works
Medicare's Facility Affiliation Data lists Kelly Ludwig at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Hospital SouthSaint Louis, MO · Acute Care Hospital · CCN 260077
Practice locations
Addresses where Kelly Ludwig is enrolled with Medicare (CMS data updated 2026-10-02).
- 10010 Kennerly RdSaint Louis, MO 63128
- 10018 Kennerly RdSaint Louis, MO 63128 (314) 525‑3423
Group practices
Medicare enrollment lists Kelly Ludwig as a member of this group (CMS data updated 2026-10-02).
- St Anthonys Physician Organization Hospitalist Services LC144 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 2000 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1992720361 |
| 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