Quick answers
- Which hospitals does Charles S. Larsen work at?
- Medicare's official clinician data lists Charles S. Larsen at 3 hospitals: SSM Health Depaul Hospital St Louis, SSM St Clare Health Center and SSM St Joseph Health Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Charles S. Larsen see patients?
- Medicare's clinician data lists 1 practice location in Maryland Heights, MO. Call before your visit to confirm the address.
- What is Charles S. Larsen's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Charles S. Larsen accept Medicare assignment?
- Yes. Medicare's clinician data says Charles S. Larsen 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 Charles S. Larsen?
- (314) 590-0550, as listed in official Medicare / NPI Registry data.
- What is Charles S. Larsen's NPI number?
- 1902169972. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Charles S. Larsen works
Medicare's Facility Affiliation Data lists Charles S. Larsen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- SSM Health Depaul Hospital St LouisBridgeton, MO · Acute Care Hospital · CCN 260104
- SSM St Clare Health CenterFenton, MO · Acute Care Hospital · CCN 260081
- SSM St Joseph Health CenterSaint Charles, MO · Acute Care Hospital · CCN 260005
Practice locations
Addresses where Charles S. Larsen is enrolled with Medicare (CMS data updated 2026-10-02).
- 2024 Dorsett VlgMaryland Heights, MO 63043 (314) 590‑0550
Group practices
Medicare enrollment lists Charles S. Larsen as a member of this group (CMS data updated 2026-10-02).
- SSM Medical Group Inc568 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Maryland Heights
Clinicians with the same Medicare primary specialty in Maryland Heights, MO — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Lake Erie College Of Osteopathic Medicine, Erie |
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902169972 |
| 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