Quick answers
- Which hospitals does Matthew B. Chapman work at?
- Medicare's official clinician data lists Matthew B. Chapman at 1 hospital: Barnes Jewish Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Matthew B. Chapman see patients?
- Medicare's clinician data lists 1 practice location in Saint Louis, MO. Call before your visit to confirm the address.
- What is Matthew B. Chapman's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Matthew B. Chapman accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew B. Chapman 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 Matthew B. Chapman?
- (314) 286-1712, as listed in official Medicare / NPI Registry data.
- What is Matthew B. Chapman's NPI number?
- 1821583949. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Matthew B. Chapman works
Medicare's Facility Affiliation Data lists Matthew B. Chapman 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
Practice locations
Addresses where Matthew B. Chapman is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Barnes Jew Hosp PlzSaint Louis, MO 63110 (314) 286‑1712
Group practices
Medicare enrollment lists Matthew B. Chapman as a member of this group (CMS data updated 2026-10-02).
- Washington University3,029 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Medical school | Creighton University School Of Medicine |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821583949 |
| 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