Quick answers
- Which hospitals does Daniel M. Marion work at?
- Medicare's official clinician data lists Daniel M. Marion at 4 hospitals: Barnes-Jewish West County Hospital, Mercy Hospital St Louis, Missouri Baptist Medical Center and St Lukes Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Daniel M. Marion see patients?
- Medicare's clinician data lists 2 practice locations, including Chesterfield, MO and Saint Louis, MO. Call before your visit to confirm the address.
- What is Daniel M. Marion's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Daniel M. Marion accept Medicare assignment?
- Yes. Medicare's clinician data says Daniel M. Marion 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 Daniel M. Marion?
- (314) 205-6160, as listed in official Medicare / NPI Registry data.
- What is Daniel M. Marion's NPI number?
- 1275875908. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Daniel M. Marion works
Medicare's Facility Affiliation Data lists Daniel M. Marion at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Barnes-Jewish West County HospitalCreve Coeur, MO · Acute Care Hospital · CCN 260162
- Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · CCN 260020
- Missouri Baptist Medical CenterSaint Louis, MO · Acute Care Hospital · CCN 260108
- St Lukes HospitalChesterfield, MO · Acute Care Hospital · CCN 260179
Practice locations
Addresses where Daniel M. Marion is enrolled with Medicare (CMS data updated 2026-10-02).
- 121 Saint Lukes Ctr DrChesterfield, MO 63017 (314) 205‑6160
- 7212 Balson AveSaint Louis, MO 63130
Group practices
Medicare enrollment lists Daniel M. Marion as a member of these groups (CMS data updated 2026-10-02).
- Aging Well Health Care, LLC238 clinicians in the group
- Conway Internists, LLC4 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Chesterfield
Clinicians with the same Medicare primary specialty in Chesterfield, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275875908 |
| 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