Quick answers
- Which hospitals does Brendan J. Knapp work at?
- Medicare's official clinician data lists Brendan J. Knapp at 3 hospitals: Barnes Jewish Hospital, Barnes-Jewish West County Hospital and Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Brendan J. Knapp see patients?
- Medicare's clinician data lists 3 practice locations, including Saint Louis, MO, Shiloh, IL and Belleville, IL. Call before your visit to confirm the address.
- What is Brendan J. Knapp's specialty?
- Medicare lists Medical Oncology as the primary specialty, and also Internal Medicine.
- Does Brendan J. Knapp accept Medicare assignment?
- Yes. Medicare's clinician data says Brendan J. Knapp 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 Brendan J. Knapp?
- (314) 747-3000, as listed in official Medicare / NPI Registry data.
- What is Brendan J. Knapp's NPI number?
- 1366002420. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Brendan J. Knapp works
Medicare's Facility Affiliation Data lists Brendan J. Knapp 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
- Barnes-Jewish West County HospitalCreve Coeur, MO · Acute Care Hospital · CCN 260162
- Memorial HospitalBelleville, IL · Acute Care Hospital · CCN 140185
Practice locations
Addresses where Brendan J. Knapp is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Barnes Jew Hosp PlzSaint Louis, MO 63110 (314) 747‑3000
- 1404 Cross StShiloh, IL 62269 (314) 362‑5641
- 4500 Memorial DrBelleville, IL 62226 (314) 747‑1171
Group practices
Medicare enrollment lists Brendan J. Knapp as a member of these groups (CMS data updated 2026-10-02).
- Washington University3,029 clinicians in the group
- Washington University Physicians in Illinois Inc175 clinicians in the group
Specialties
- Medical Oncologyprimary
- Internal Medicinealso
Other oncologists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Indiana University School Of Medicine |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1366002420 |
| 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