MARY KATHERYN BUFFINGTON RN
NPI 1326891136
Nurse Practitioner - Family in Winchester, VA
About Mary Katheryn Buffington Rn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY KATHERYN BUFFINGTON RN (NPI 1326891136) is an individual family provider in Winchester, Virginia, licensed in West Virginia (123570) and active in the NPI registry since April 2024. She is enrolled in Medicare PECOS, is affiliated with Berkeley Medical Center, and maintains a secondary practice location in Berkeley Springs.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Location 1
Accepted Insurance
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
Mary Katheryn Buffington Rn 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 Mary Buffington reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ranson, WV 25438
- Reassigned Medicare billing, West Virginia enrollment
- 231 clinicians in this Medicare group
Ranson, WV 25438
- Reassigned Medicare billing, West Virginia enrollment
- 2,471 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Berkeley Medical Center
Acute Care Hospitals · Martinsburg, WVValley Health War Memorial Hospital
Critical Access Hospitals · Berkeley Springs, WVJefferson Medical Center
Critical Access Hospitals · Ranson, WVPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 22601 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 14
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WINCHESTER, VA 22601
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 Mary Buffington's NPI number?
The NPI number for Mary Buffington is 1326891136. It was assigned to this individual provider in the NPPES registry on April 10, 2024. The provider is also known as Mary Katheryn Hill Rn.
Where is Mary Buffington located?
Mary Buffington practices at 2913 Valley Ave, Winchester, VA 22601. The listed phone number is (540) 536-5200.
What is Mary Buffington's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Mary Buffington enrolled in Medicare?
Yes. Mary Buffington 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 Mary Buffington's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Buffington reassigns Medicare benefits to 2 organizations: City Hospital, Inc. (Ranson, WV) and West Virginia University Medical Corporation (Ranson, WV). 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 Mary Buffington's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Buffington accept?
Health plans from CareSource, Highmark Blue Cross Blue Shield West Virginia and Molina Healthcare list Mary Buffington 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 Mary Buffington affiliated with any hospitals?
According to CMS data, Mary Buffington is affiliated with Berkeley Medical Center, Valley Health War Memorial Hospital and Jefferson Medical Center.
When was this NPI record last updated?
The NPPES record for Mary Buffington was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 40 days 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.
# Mary Katheryn Buffington, RN · NPI 1326891136
Family physician in Winchester, Virginia. Individual provider, active in the CMS NPPES registry since April 10, 2024.
## Identity
- **NPI:** 1326891136 (Entity type: Individual)
- **Enumerated:** April 10, 2024
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 123570 (West Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 2913 VALLEY AVE, Winchester, VA 22601-2676
- **Phone:** (540) 536-5200
## 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): City Hospital, Inc. (NPI 1336657493, Ranson, WV); West Virginia University Medical Corporation (NPI 1215785563, Ranson, WV) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** September 29, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1326891136) · Data from the CMS NPPES public registry.