MRS. MARTHA LOUISE WALKER NP
NPI 1366714339
Nurse Practitioner in Corning, NY
About Mrs. Martha Louise Walker Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. MARTHA LOUISE WALKER NP (NPI 1366714339) is an individual nurse practitioner in Corning, New York, licensed in New York (308472) and active in the NPI registry since February 2012. She is enrolled in Medicare PECOS, is affiliated with Arnot Ogden Medical Center, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
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
Mrs. Martha Louise Walker Np 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 Martha Walker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Elmira, NY 14905
- Reassigned Medicare billing, New York enrollment
- 122 clinicians in this Medicare group
Elmira, NY 14902
- Reassigned Medicare billing, New York enrollment
- 7 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 5
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.
Arnot Ogden Medical Center
Acute Care Hospitals · Elmira, NYCorning Hospital
Acute Care Hospitals · Corning, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 14830 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 5
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 Martha Walker's NPI number?
The NPI number for Martha Walker is 1366714339. It was assigned to this individual provider in the NPPES registry on February 6, 2012.
Where is Martha Walker located?
Martha Walker practices at 123 Conhocton St Ste 101, Corning, NY 14830. The listed phone number is (607) 438-1200.
What is Martha Walker's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Martha Walker enrolled in Medicare?
Yes. Martha 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 Martha Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Martha Walker reassigns Medicare benefits to 2 organizations: Arnot Medical Services PLLC (Elmira, NY) and County Of Chemung (Elmira, NY). 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 Martha Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Martha Walker affiliated with any hospitals?
According to CMS data, Martha Walker is affiliated with Arnot Ogden Medical Center and Corning Hospital.
When was this NPI record last updated?
The NPPES record for Martha Walker was last updated on May 18, 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.
# Mrs. Martha Louise Walker, NP · NPI 1366714339
Nurse Practitioner physician in Corning, New York. Individual provider, active in the CMS NPPES registry since February 6, 2012.
## Identity
- **NPI:** 1366714339 (Entity type: Individual)
- **Enumerated:** February 6, 2012
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 308472 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 123 CONHOCTON ST STE 101, Corning, NY 14830-2959
- **Phone:** (607) 438-1200 · **Fax:** (607) 438-1221
## 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): Arnot Medical Services PLLC (NPI 1427326768, Elmira, NY); County Of Chemung (NPI 1528054194, Elmira, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** May 18, 2020
- **Other identifiers:** Medicaid 05100165 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1366714339) · Data from the CMS NPPES public registry.