CAROL ANN KILLIAN MD
NPI 1841285335
Emergency Medicine in Mount Kisco, NY
About Carol Ann Killian Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CAROL ANN KILLIAN MD (NPI 1841285335) is an individual emergency medicine provider in Mount Kisco, New York, licensed in New York (206671) and active in the NPI registry since September 2005. She is enrolled in Medicare PECOS, is affiliated with Northern Westchester Hospital, and is a graduate of State University Of New York At Buffalo School Of Medicine (1994).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 13
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
Carol Ann Killian 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 Carol Killian reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mount Kisco, NY 10549
- Reassigned Medicare billing, New York enrollment
- 76 clinicians in this Medicare group
Great Neck, NY 11021
- Reassigned Medicare billing, New York enrollment
- 9,353 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.
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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MOUNT KISCO, NY 10549
MOUNT KISCO, NY 10549
MOUNT KISCO, NY 10549
MOUNT KISCO, NY 10549
MOUNT KISCO, NY 10549
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 Carol Killian's NPI number?
The NPI number for Carol Killian is 1841285335. It was assigned to this individual provider in the NPPES registry on September 12, 2005.
Where is Carol Killian located?
Carol Killian practices at 400 E Main St Northern Westchester Hospital Emergency Department, Mount Kisco, NY 10549. The listed phone number is (914) 666-1254.
What is Carol Killian's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Carol Killian enrolled in Medicare?
Yes. Carol Killian 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 Carol Killian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carol Killian reassigns Medicare benefits to 2 organizations: Northern Westchester Hospital Association (Mount Kisco, NY) and North Shore-Lij Medical PC (Great Neck, 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 Carol Killian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Carol Killian affiliated with any hospitals?
According to CMS data, Carol Killian is affiliated with Northern Westchester Hospital.
When was this NPI record last updated?
The NPPES record for Carol Killian was last updated on May 2, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Carol Ann Killian, MD · NPI 1841285335
Emergency Medicine physician in Mount Kisco, New York. Individual provider, active in the CMS NPPES registry since September 12, 2005.
## Identity
- **NPI:** 1841285335 (Entity type: Individual)
- **Enumerated:** September 12, 2005
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 206671 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 400 E MAIN ST, NORTHERN WESTCHESTER HOSPITAL EMERGENCY DEPARTMENT, Mount Kisco, NY 10549-3417
- **Phone:** (914) 666-1254 · **Fax:** (914) 666-1931
## 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): Northern Westchester Hospital Association (NPI 1679641237, Mount Kisco, NY); North Shore-Lij Medical PC (NPI 1053688572, Great Neck, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York At Buffalo School Of Medicine, class of 1994
## Record status
- **NPPES last updated:** May 2, 2008
- **Other identifiers:** Other 7171238 (NY); Medicaid 02041770 (NY); Other 2101172; and 10 more
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Source: [NPI Profile](https://npiprofile.com/npi/1841285335) · Data from the CMS NPPES public registry.