DR. BRENDAN JAMES KNAPP MD
NPI 1366002420
Internal Medicine - Medical Oncology in Saint Louis, MO
About Dr. Brendan James Knapp Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRENDAN JAMES KNAPP MD (NPI 1366002420) is an individual medical oncology provider in Saint Louis, Missouri, licensed in Missouri (2021036593) and active in the NPI registry since June 2019. He is enrolled in Medicare PECOS, is affiliated with Memorial Hospital, and is a graduate of Indiana University School Of Medicine (2019).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Brendan James Knapp Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Brendan Knapp reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 1,133 clinicians in this Medicare group
Saint Louis, MO 63108
- Reassigned Medicare billing, Illinois enrollment
- 530 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Memorial Hospital
Acute Care Hospitals · Belleville, ILBarnes Jewish Hospital
Acute Care Hospitals · Saint Louis, MOBarnes-Jewish West County Hospital
Acute Care Hospitals · Creve Coeur, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63110 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Brendan Knapp's NPI number?
The NPI number for Brendan Knapp is 1366002420. It was assigned to this individual provider in the NPPES registry on June 19, 2019.
Where is Brendan Knapp located?
Brendan Knapp practices at 1 Barnes Jewish Hospital Plz Div Im Medical Oncology, Saint Louis, MO 63110. The listed phone number is (800) 647-2098.
What is Brendan Knapp's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Brendan Knapp enrolled in Medicare?
Yes. Brendan Knapp is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Brendan Knapp's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brendan Knapp reassigns Medicare benefits to 2 organizations: Washington University (Saint Louis, MO) and Washington University Physicians In Illinois, Inc (Saint Louis, MO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Brendan Knapp's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Brendan Knapp affiliated with any hospitals?
According to CMS data, Brendan Knapp is affiliated with Memorial Hospital, Barnes Jewish Hospital and Barnes-Jewish West County Hospital.
When was this NPI record last updated?
The NPPES record for Brendan Knapp was last updated on August 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Brendan James Knapp, MD · NPI 1366002420
Medical Oncology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since June 19, 2019.
## Identity
- **NPI:** 1366002420 (Entity type: Individual)
- **Enumerated:** June 19, 2019
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** 2021036593 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 BARNES JEWISH HOSPITAL PLZ, DIV IM MEDICAL ONCOLOGY, Saint Louis, MO 63110-1003
- **Phone:** (800) 647-2098 · **Fax:** (314) 362-3192
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Washington University (NPI 1992746903, Saint Louis, MO); Washington University Physicians In Illinois, Inc (NPI 1457203135, Saint Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Indiana University School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** August 6, 2025
- **Other identifiers:** Medicaid 200073435 (MO)
---
Source: [NPI Profile](https://npiprofile.com/npi/1366002420) · Data from the CMS NPPES public registry.