ESTHER ELISE KNAPP M.D.
NPI 1275785479
Pediatrics - Pediatric Hematology-Oncology in Louisville, KY
About Esther Elise Knapp M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ESTHER ELISE KNAPP M.D. (NPI 1275785479) is an individual pediatric hematology-oncology provider in Louisville, Kentucky, licensed in Kentucky (49652) and active in the NPI registry since October 2008. She is enrolled in Medicare PECOS, is affiliated with Norton Hospitals, Inc, and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (2008).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 2
Accepted Insurance
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
Esther Elise Knapp M.d. 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 Esther Knapp reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Louisville, KY 40202
- Reassigned Medicare billing, Kentucky enrollment
- 2,337 clinicians in this Medicare group
Louisville, KY 40241
- Reassigned Medicare billing, Kentucky enrollment
- Medicare enrollment name: Norton Childrens Medical Group LLC
- 1,008 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Norton Hospitals, Inc
Acute Care Hospitals · Louisville, KYMedicare 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.
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
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 Esther Knapp's NPI number?
The NPI number for Esther Knapp is 1275785479. It was assigned to this individual provider in the NPPES registry on October 21, 2008.
Where is Esther Knapp located?
Esther Knapp practices at 210 E Gray St Ste 601, Louisville, KY 40202. The listed phone number is (502) 588-3600.
What is Esther Knapp's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.
Is Esther Knapp enrolled in Medicare?
Yes. Esther 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 Esther Knapp's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Esther Knapp reassigns Medicare benefits to 2 organizations: University Of Louisville Physicians, Inc. (Louisville, KY) and Norton Children's Medical Group, LLC (Louisville, KY). 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 Esther Knapp's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Esther Knapp accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter of Tennessee and CareSource list Esther Knapp as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Esther Knapp affiliated with any hospitals?
According to CMS data, Esther Knapp is affiliated with Norton Hospitals, Inc.
When was this NPI record last updated?
The NPPES record for Esther Knapp was last updated on October 23, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.
# Esther Elise Knapp, M.D. · NPI 1275785479
Pediatric Hematology-Oncology physician in Louisville, Kentucky. Individual provider, active in the CMS NPPES registry since October 21, 2008.
## Identity
- **NPI:** 1275785479 (Entity type: Individual)
- **Enumerated:** October 21, 2008
- **Primary specialty:** Pediatrics - Pediatric Hematology-Oncology · taxonomy 2080P0207X
- **State license:** 49652 (Kentucky)
- **Sole proprietor:** No
## Practice location
- **Address:** 210 E GRAY ST, STE 601, Louisville, KY 40202-3902
- **Phone:** (502) 588-3600 · **Fax:** (502) 588-9536
## 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): University Of Louisville Physicians, Inc. (NPI 1144586876, Louisville, KY); Norton Children's Medical Group, LLC (NPI 1013559921, Louisville, KY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Albert Einstein College Of Medicine Of Yeshiva University, class of 2008
## Record status
- **NPPES last updated:** October 23, 2020
- **Other identifiers:** Medicaid 201410250 (IN); Medicaid 7100445180 (KY)
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Source: [NPI Profile](https://npiprofile.com/npi/1275785479) · Data from the CMS NPPES public registry.