DR. KATHERINE N WEILBAECHER MD
NPI 1447277942
Internal Medicine - Medical Oncology in Saint Louis, MO
About Dr. Katherine N Weilbaecher Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KATHERINE N WEILBAECHER MD (NPI 1447277942) is an individual medical oncology provider in Saint Louis, Missouri, licensed in Missouri (2000166707) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Barnes Jewish Hospital, and is a graduate of Stanford University School Of Medicine (1992).
NPPES Registry Identity
Specialties & Licenses
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. Katherine N Weilbaecher 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 Reassignment
Medicare enrollment records show Katherine Weilbaecher reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 1,133 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Barnes 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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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
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 Katherine Weilbaecher's NPI number?
The NPI number for Katherine Weilbaecher is 1447277942. It was assigned to this individual provider in the NPPES registry on July 17, 2006.
Where is Katherine Weilbaecher located?
Katherine Weilbaecher practices at 4921 Parkview Pl Div Im Medical Oncology, Ste 7A, 7B, 7C, Saint Louis, MO 63110. The listed phone number is (800) 647-2098.
What is Katherine Weilbaecher's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Katherine Weilbaecher enrolled in Medicare?
Yes. Katherine Weilbaecher 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 organization bills Medicare for Katherine Weilbaecher's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Weilbaecher reassigns Medicare benefits to Washington University (Saint Louis, MO). The 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 Katherine Weilbaecher's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Katherine Weilbaecher affiliated with any hospitals?
According to CMS data, Katherine Weilbaecher is affiliated with Barnes Jewish Hospital and Barnes-Jewish West County Hospital.
When was this NPI record last updated?
The NPPES record for Katherine Weilbaecher was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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. Katherine N Weilbaecher, MD · NPI 1447277942
Medical Oncology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since July 17, 2006.
## Identity
- **NPI:** 1447277942 (Entity type: Individual)
- **Enumerated:** July 17, 2006
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **State license:** 2000166707 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 4921 PARKVIEW PL, DIV IM MEDICAL ONCOLOGY, STE 7A, 7B, 7C, Saint Louis, MO 63110-1032
- **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:** Washington University (NPI 1992746903, Saint Louis, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Stanford University School Of Medicine, class of 1992
## Record status
- **NPPES last updated:** April 17, 2025
- **Other identifiers:** Medicaid 205092109 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1447277942) · Data from the CMS NPPES public registry.