DR. STEVEN E. AKS DO
NPI 1295810356
Emergency Medicine - Medical Toxicology in Chicago, IL
About Dr. Steven E. Aks Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. STEVEN E. AKS DO (NPI 1295810356) is an individual medical toxicology provider in Chicago, Illinois, licensed in Illinois (036079268) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Steven E. Aks Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Steven Aks reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chicago, IL 60612
- Reassigned Medicare billing, Illinois enrollment
- 1,047 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60612 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.
CHICAGO, IL 60612
CHICAGO, IL 60612
CHICAGO, IL 60612
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 Aks's NPI number?
The NPI number for Steven Aks is 1295810356. It was assigned to this individual provider in the NPPES registry on October 26, 2006.
Where is Steven Aks located?
Steven Aks practices at 1900 W Polk St 10th Floor, Department Of Emergency Medicine, Chicago, IL 60612. The listed phone number is (312) 864-0060.
What is Steven Aks's specialty?
The primary specialty registered for this NPI is Emergency Medicine, specializing in Medical Toxicology, with taxonomy code 207PT0002X.
Is Steven Aks enrolled in Medicare?
Yes. Steven Aks is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Steven Aks's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Aks reassigns Medicare benefits to Cook County (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 Steven Aks'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 Steven Aks was last updated on April 21, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Steven E. Aks, DO · NPI 1295810356
Medical Toxicology physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since October 26, 2006.
## Identity
- **NPI:** 1295810356 (Entity type: Individual)
- **Enumerated:** October 26, 2006
- **Primary specialty:** Emergency Medicine - Medical Toxicology · taxonomy 207PT0002X
- **State license:** 036079268 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1900 W POLK ST, 10TH FLOOR, DEPARTMENT OF EMERGENCY MEDICINE, Chicago, IL 60612-3723
- **Phone:** (312) 864-0060
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Cook County (NPI 1912063439, Chicago, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 21, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1295810356) · Data from the CMS NPPES public registry.