DR. ANDREW R WALKER MD
NPI 1639198559
Internal Medicine in Camp Hill, PA
About Dr. Andrew R Walker Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ANDREW R WALKER MD (NPI 1639198559) is an individual internal medicine provider in Camp Hill, Pennsylvania, licensed in Pennsylvania (MD056746L) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Penn State Health Holy Spirit Medical Center, and is a graduate of Other (1990).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Other Identifiers 12
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. Andrew R Walker 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 Reassignments
2Medicare enrollment records show Andrew Walker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Camp Hill, PA 17011
- Reassigned Medicare billing, Pennsylvania enrollment
- 994 clinicians in this Medicare group
Etters, PA 17319
- Reassigned Medicare billing, Pennsylvania enrollment
- 3,080 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.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Penn State Health Holy Spirit Medical Center
Acute Care Hospitals · Camp Hill, PAPenn State Health St. Joseph
Acute Care Hospitals · Reading, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 17011 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Walker's NPI number?
The NPI number for Andrew Walker is 1639198559. It was assigned to this individual provider in the NPPES registry on July 19, 2006. The provider is also known as Dr. Andrzej Rafel Walker MD.
Where is Andrew Walker located?
Andrew Walker practices at 431 N 21st St, Camp Hill, PA 17011. The listed phone number is (717) 763-3730.
What is Andrew Walker's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Andrew Walker enrolled in Medicare?
Yes. Andrew Walker 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 Andrew Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Walker reassigns Medicare benefits to 2 organizations: Penn State Health Medical Group, LLC (Camp Hill, PA) and Wellspan Medical Group (Etters, PA). 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 Andrew Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Andrew Walker affiliated with any hospitals?
According to CMS data, Andrew Walker is affiliated with Penn State Health Holy Spirit Medical Center and Penn State Health St. Joseph.
When was this NPI record last updated?
The NPPES record for Andrew Walker was last updated on August 11, 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.
# Dr. Andrew R Walker, MD · NPI 1639198559
Internal Medicine physician in Camp Hill, Pennsylvania. Individual provider, active in the CMS NPPES registry since July 19, 2006.
## Identity
- **NPI:** 1639198559 (Entity type: Individual)
- **Enumerated:** July 19, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD056746L (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 431 N 21ST ST, Camp Hill, PA 17011-2202
- **Phone:** (717) 763-3730 · **Fax:** (717) 763-3734
## 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): Penn State Health Medical Group, LLC (NPI 1922771534, Camp Hill, PA); Wellspan Medical Group (NPI 1760550883, Etters, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1990
## Record status
- **NPPES last updated:** August 11, 2020
- **Other identifiers:** Other 2161248 (PA); Other 1517816 (PA); Other 5784725 (PA); and 9 more
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Source: [NPI Profile](https://npiprofile.com/npi/1639198559) · Data from the CMS NPPES public registry.