STEVEN M ZAK MD
NPI 1861467755
Psychiatry & Neurology - Neurology in Northbrook, IL
About Steven M Zak Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEVEN M ZAK MD (NPI 1861467755) is an individual neurology provider in Northbrook, Illinois, licensed in Illinois (036070165) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS, is affiliated with Holmes Regional Medical Center, and is a graduate of Northwestern University Feinberg Medical School (1981).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Steven M Zak 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 Reassignment
Medicare enrollment records show Steven Zak reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Columbia, MD 21044
- Reassigned Medicare billing, Illinois enrollment
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 7
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Holmes Regional Medical Center
Acute Care Hospitals · Melbourne, FLLakewood Ranch Medical Center
Acute Care Hospitals · Bradenton, FLCommunity Hospital
Acute Care Hospitals · Munster, INEssentia Health St Mary's Medical Center
Acute Care Hospitals · Duluth, MNSentara Norfolk General Hospital
Acute Care Hospitals · Norfolk, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60062 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.
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 Steven Zak's NPI number?
The NPI number for Steven Zak is 1861467755. It was assigned to this individual provider in the NPPES registry on February 22, 2006.
Where is Steven Zak located?
Steven Zak practices at 1403 Kingsport Ct, Northbrook, IL 60062. The listed phone number is (847) 564-1870.
What is Steven Zak's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is Steven Zak enrolled in Medicare?
Yes. Steven Zak 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 Steven Zak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Zak reassigns Medicare benefits to American Neuromonitoring Associates, PC (Columbia, MD). 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 Steven Zak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Steven Zak accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan and Ambetter from Meridian list Steven Zak 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 Steven Zak affiliated with any hospitals?
According to CMS data, Steven Zak is affiliated with Holmes Regional Medical Center, Lakewood Ranch Medical Center, Community Hospital, Essentia Health St Mary's Medical Center and Sentara Norfolk General Hospital.
When was this NPI record last updated?
The NPPES record for Steven Zak was last updated on January 24, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Steven M Zak, MD · NPI 1861467755
Neurology physician in Northbrook, Illinois. Individual provider, active in the CMS NPPES registry since February 22, 2006.
## Identity
- **NPI:** 1861467755 (Entity type: Individual)
- **Enumerated:** February 22, 2006
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **State license:** 036070165 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1403 KINGSPORT CT, Northbrook, IL 60062-5100
- **Phone:** (847) 564-1870
## 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:** American Neuromonitoring Associates, PC (NPI 1740391283, Columbia, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northwestern University Feinberg Medical School, class of 1981
## Record status
- **NPPES last updated:** January 24, 2024
- **Other identifiers:** Medicaid 0360701653 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1861467755) · Data from the CMS NPPES public registry.