KARYN M MURRAY FNP
NPI 1639116270
Nurse Practitioner in Mount Kisco, NY
About Karyn M Murray Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KARYN M MURRAY FNP (NPI 1639116270) is an individual nurse practitioner in Mount Kisco, New York, licensed in New York (303949) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS, is affiliated with Northern Westchester Hospital, and is a graduate of Mercy College (2003).
NPPES Registry Identity
Specialties & Licenses
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
Karyn M Murray Fnp 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 Reassignment
Medicare enrollment records show Karyn Murray reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Mount Kisco, NY 10549
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Optum Medical Care PC
- 1,601 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 3
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northern Westchester Hospital
Acute Care Hospitals · Mount Kisco, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10549 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MOUNT KISCO, NY 10549
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 Karyn Murray's NPI number?
The NPI number for Karyn Murray is 1639116270. It was assigned to this individual provider in the NPPES registry on June 1, 2006.
Where is Karyn Murray located?
Karyn Murray practices at 400 E Main Street Care Mount Medical, PC, Mount Kisco, NY 10549. The listed phone number is (914) 241-1050.
What is Karyn Murray's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Karyn Murray enrolled in Medicare?
Yes. Karyn Murray 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 organization bills Medicare for Karyn Murray's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karyn Murray reassigns Medicare benefits to Optum Medical Care, P.C. (Mount Kisco, 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 Karyn Murray's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Karyn Murray affiliated with any hospitals?
According to CMS data, Karyn Murray is affiliated with Northern Westchester Hospital.
When was this NPI record last updated?
The NPPES record for Karyn Murray was last updated on August 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Karyn M Murray, FNP · NPI 1639116270
Nurse Practitioner physician in Mount Kisco, New York. Individual provider, active in the CMS NPPES registry since June 1, 2006.
## Identity
- **NPI:** 1639116270 (Entity type: Individual)
- **Enumerated:** June 1, 2006
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 303949 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 400 E MAIN STREET, CARE MOUNT MEDICAL, PC, Mount Kisco, NY 10549-3412
- **Phone:** (914) 241-1050 · **Fax:** (914) 242-1516
## 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:** Optum Medical Care, P.C. (NPI 1982643003, Mount Kisco, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Mercy College, class of 2003
## Record status
- **NPPES last updated:** August 13, 2026
- **Other identifiers:** Medicaid 04210904 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1639116270) · Data from the CMS NPPES public registry.