LISA ROSTOKER MUCHNIK C.R.N.A., R.N.
NPI 1972874998
Nurse Anesthetist, Certified Registered in Syosset, NY
About Lisa Rostoker Muchnik C.r.n.a., R.n. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LISA ROSTOKER MUCHNIK C.R.N.A., R.N. (NPI 1972874998) is an individual nurse anesthetist, certified registered in Syosset, New York, licensed in New York (564682) and active in the NPI registry since January 2012.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Lisa Rostoker Muchnik C.r.n.a., R.n. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Lisa Muchnik reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Jericho, NY 11753
- Reassigned Medicare billing, New York enrollment
- 413 clinicians in this Medicare group
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 2
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.
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.
SYOSSET, NY 11791
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 Lisa Muchnik's NPI number?
The NPI number for Lisa Muchnik is 1972874998. It was assigned to this individual provider in the NPPES registry on January 23, 2012. The provider is also known as Lisa Susan Rostoker.
Where is Lisa Muchnik located?
Lisa Muchnik practices at 221 Jericho Tpke, Syosset, NY 11791. The listed phone number is (516) 496-6500.
What is Lisa Muchnik's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Lisa Muchnik enrolled in Medicare?
Yes. Lisa Muchnik is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Lisa Muchnik's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lisa Muchnik reassigns Medicare benefits to 2 organizations: Optum Urgent Care, PLLC (Jericho, NY) and Optum Medical Care, P.C. (Mount Kisco, 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 Lisa Muchnik's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Lisa Muchnik was last updated on April 29, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.