NICHOLAS STUART LYSAK M.D.
NPI 1477972297
Surgery - Vascular Surgery in Chicago, IL
About Nicholas Stuart Lysak M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NICHOLAS STUART LYSAK M.D. (NPI 1477972297) is an individual vascular surgery provider in Chicago, Illinois, licensed in Illinois (036-156555) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS, is affiliated with Advocate Trinity Hospital, and maintains a secondary practice location in Chicago.
NPPES Registry Identity
Specialties & Licenses 2
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
Nicholas Stuart Lysak M.d. 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 Nicholas Lysak reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chicago, IL 60657
- Reassigned Medicare billing, Illinois enrollment
- 4,870 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 13
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Advocate Trinity Hospital
Acute Care Hospitals · Chicago, ILAdvocate Illinois Masonic Medical Center
Acute Care Hospitals · Chicago, ILAdvocate Lutheran General Hospital
Acute Care Hospitals · Park Ridge, ILAdvocate Good Samaritan Hospital
Acute Care Hospitals · Downers Grove, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60657 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 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60657
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 Nicholas Lysak's NPI number?
The NPI number for Nicholas Lysak is 1477972297. It was assigned to this individual provider in the NPPES registry on April 9, 2014.
Where is Nicholas Lysak located?
Nicholas Lysak practices at 3000 N Halsted St Ste 509, Chicago, IL 60657. The listed phone number is (773) 296-3390.
What is Nicholas Lysak's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.
Is Nicholas Lysak enrolled in Medicare?
Yes. Nicholas Lysak 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 Nicholas Lysak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholas Lysak reassigns Medicare benefits to Advocate Health And Hospitals Corp. (Chicago, IL). 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 Nicholas Lysak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nicholas Lysak accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Nicholas Lysak 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 Nicholas Lysak affiliated with any hospitals?
According to CMS data, Nicholas Lysak is affiliated with Advocate Trinity Hospital, Advocate Illinois Masonic Medical Center, Advocate Lutheran General Hospital and Advocate Good Samaritan Hospital.
When was this NPI record last updated?
The NPPES record for Nicholas Lysak was last updated on September 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.