Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Andrew W. Walter, MD

Pediatric Hematology & Oncology Physician in Wilmington, DE · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1629160445

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Registry record

Entity type Individual (Type 1)

Name Dr. Andrew W. Walter

Credential MD

Sex Male

Practice address A.I. Dupont Hospital for Children, 1600 Rockland Road, Wilmington, DE, 19803

Phone (302) 651-4000

Fax (302) 651-4945

Enumeration date Sep 29, 2006

Last updated in NPPES Sep 6, 2011

Taxonomy & licenses

2080P0207X Pediatric Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License C10005784 (DE) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
057837	Medicaid	IA	-
0891002	Medicaid	MD	-
4436200	Medicaid	DC	-
001773716	Medicaid	PA	-
Q05784	Medicaid	SC	-
8054703	Medicaid	NJ	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1629160445 active?

Yes, as of the latest NPPES snapshot, NPI 1629160445 is active (record last updated 2011-09-06).

How do I verify Andrew Walter's NPI record?

Cross-check NPI 1629160445 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-09-06.