DR. MARK ALLAN WALKER MD
NPI 1194815001
Specialist in Binghamton, NY
About Dr. Mark Allan Walker Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK ALLAN WALKER MD (NPI 1194815001) is an individual specialist in Binghamton, New York, licensed in New York (162227-1) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Our Lady Of Lourdes Memorial Hospital, Inc, and is a graduate of Northwestern University Feinberg Medical School (1978).
NPPES Registry Identity
Specialties & Licenses
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 (PECOS)
Dr. Mark Allan Walker Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mark Walker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Binghamton, NY 13905
- Reassigned Medicare billing, New York enrollment
- 386 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.
Our Lady Of Lourdes Memorial Hospital, Inc
Acute Care Hospitals · Binghamton, NYOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BINGHAMTON, NY 13905
BINGHAMTON, NY 13905
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 Mark Walker's NPI number?
The NPI number for Mark Walker is 1194815001. It was assigned to this individual provider in the NPPES registry on October 13, 2006.
Where is Mark Walker located?
Mark Walker practices at 161 Riverside Dr Suite M01, Binghamton, NY 13905. The listed phone number is (607) 729-5085.
What is Mark Walker's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Mark Walker enrolled in Medicare?
Yes. Mark Walker is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mark Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Walker reassigns Medicare benefits to Our Lady Of Lourdes Memorial Hospital, Inc. (Binghamton, NY). 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 Mark Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Walker accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Mark Walker 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 Mark Walker affiliated with any hospitals?
According to CMS data, Mark Walker is affiliated with Our Lady Of Lourdes Memorial Hospital, Inc.
When was this NPI record last updated?
The NPPES record for Mark Walker was last updated on November 21, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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. Mark Allan Walker, MD · NPI 1194815001
Specialist provider in Binghamton, New York. Individual provider, active in the CMS NPPES registry since October 13, 2006.
## Identity
- **NPI:** 1194815001 (Entity type: Individual)
- **Enumerated:** October 13, 2006
- **Primary specialty:** Specialist · taxonomy 174400000X
- **State license:** 162227-1 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 161 RIVERSIDE DR, SUITE M01, Binghamton, NY 13905-4176
- **Phone:** (607) 729-5085
## 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:** Our Lady Of Lourdes Memorial Hospital, Inc. (NPI 1063557189, Binghamton, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northwestern University Feinberg Medical School, class of 1978
## Record status
- **NPPES last updated:** November 21, 2011
- **Other identifiers:** Medicare ID-Type Unspecified 16815B (NY); Medicare UPIN D79133 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1194815001) · Data from the CMS NPPES public registry.