DR. LEWIS M. RUSSAKOFF M.D.
NPI 1225122310
Psychiatry & Neurology - Psychiatry in Sleepy Hollow, NY
About Dr. Lewis M. Russakoff M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LEWIS M. RUSSAKOFF M.D. (NPI 1225122310) is an individual psychiatry provider in Sleepy Hollow, New York, licensed in New York (113198) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 4
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Lewis M. Russakoff M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Lewis Russakoff reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tarrytown, NY 10591
- Reassigned Medicare billing, New York enrollment
- 65 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
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10591 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.
SLEEPY HOLLOW, NY 10591
SLEEPY HOLLOW, NY 10591
SLEEPY HOLLOW, NY 10591
SLEEPY HOLLOW, NY 10591
SLEEPY HOLLOW, NY 10591
SLEEPY HOLLOW, NY 10591
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 Lewis Russakoff's NPI number?
The NPI number for Lewis Russakoff is 1225122310. It was assigned to this individual provider in the NPPES registry on October 3, 2006. The provider is also known as Dr. L. Mark Russakoff M.D..
Where is Lewis Russakoff located?
Lewis Russakoff practices at 701 N Broadway Sleepy Hollow, Sleepy Hollow, NY 10591. The listed phone number is (914) 366-3604.
What is Lewis Russakoff's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Lewis Russakoff enrolled in Medicare?
Yes. Lewis Russakoff is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Lewis Russakoff's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lewis Russakoff reassigns Medicare benefits to 2 organizations: Phelps Memorial Hospital Association (Tarrytown, 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 Lewis Russakoff'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 Lewis Russakoff was last updated on January 20, 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.