DR. ANDREW W. WALTER MD
NPI 1629160445
Pediatrics - Pediatric Hematology-Oncology in Wilmington, DE
About Dr. Andrew W. Walter Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANDREW W. WALTER MD (NPI 1629160445) is an individual pediatric hematology-oncology provider in Wilmington, Delaware, licensed in Delaware (C10005784) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 9
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Andrew W. Walter Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Andrew Walter reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Wilmington, DE 19803
- Reassigned Medicare billing, Delaware enrollment
- 526 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.
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.
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
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 Andrew Walter's NPI number?
The NPI number for Andrew Walter is 1629160445. It was assigned to this individual provider in the NPPES registry on September 29, 2006.
Where is Andrew Walter located?
Andrew Walter practices at A.I. Dupont Hospital For Children 1600 Rockland Road, Wilmington, DE 19803. The listed phone number is (302) 651-4000.
What is Andrew Walter's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.
Is Andrew Walter enrolled in Medicare?
Yes. Andrew Walter is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Andrew Walter's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Walter reassigns Medicare benefits to The Nemours Foundation (Wilmington, DE). 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 Andrew Walter's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Andrew Walter accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and AmeriHealth Caritas Next and 1 other insurer list Andrew Walter 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.
When was this NPI record last updated?
The NPPES record for Andrew Walter was last updated on September 6, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Dr. Andrew W. Walter, MD · NPI 1629160445
Pediatric Hematology-Oncology physician in Wilmington, Delaware. Individual provider, active in the CMS NPPES registry since September 29, 2006.
## Identity
- **NPI:** 1629160445 (Entity type: Individual)
- **Enumerated:** September 29, 2006
- **Primary specialty:** Pediatrics - Pediatric Hematology-Oncology · taxonomy 2080P0207X
- **State license:** C10005784 (Delaware)
- **Sole proprietor:** No
## Practice location
- **Address:** A.I. DUPONT HOSPITAL FOR CHILDREN, 1600 ROCKLAND ROAD, Wilmington, DE 19803-3607
- **Phone:** (302) 651-4000 · **Fax:** (302) 651-4945
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** The Nemours Foundation (NPI 1366594699, Wilmington, DE), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 6, 2011
- **Other identifiers:** Medicaid 0891002 (MD); Medicaid 8054703 (NJ); Medicaid 057837 (IA); and 6 more
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Source: [NPI Profile](https://npiprofile.com/npi/1629160445) · Data from the CMS NPPES public registry.