Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Andrew R Walker, MD

Internal Medicine Physician in Camp Hill, PA · enumerated 2006 · practices at Spirit Physician Services, Inc..

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

National Provider Identifier

1639198559

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Registry record

Entity type Individual (Type 1)

Name Dr. Andrew R Walker

Credential MD

Sex Male

Practice address 431 N 21st St, Camp Hill, PA, 17011

Phone (717) 763-3730

Fax (717) 763-3734

Enumeration date Jul 19, 2006

Last updated in NPPES Aug 11, 2020

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License MD056746L (PA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD056746L (PA) 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
884265	Other	MD	CAREFIRST MARYLAND BCBS
2161248	Other	PA	MAMSI-WMG
0510341000	Other	PA	AMERIHEALTH 65 PA
680764	Other	PA	HIGHMARK BLUE SHIELD
001844611	Medicaid	PA	-
20055661	Other	PA	AMERIHEALTH MERCY-WMG
186678	Other	PA	UNISON-WMG
203884	Other	PA	JOHNS HOPKINS
50059815	Other	PA	CAPITAL BLUE CROSS-WMG
5784725	Other	PA	AETNA
1517816	Other	PA	GATEWAY-WMG
6937	Other	PA	GEISINGER

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 1639198559 active?

Yes, as of the latest NPPES snapshot, NPI 1639198559 is active (record last updated 2020-08-11).

How do I verify Andrew Walker's NPI record?

Cross-check NPI 1639198559 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 2020-08-11.