STEVEN W. HRYSZCZUK D.O.
NPI 1255368890
Anesthesiology in Madison, WI
About Steven W. Hryszczuk D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEVEN W. HRYSZCZUK D.O. (NPI 1255368890) is an individual anesthesiology provider in Madison, Wisconsin, licensed in Wisconsin (4000-21) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Ssm Health St Mary's Hospital - Janesville, and maintains a secondary practice location in Madison.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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 W. Hryszczuk D.o. 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 Reassignments
3Medicare enrollment records show Steven Hryszczuk reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Madison, WI 53715
- Reassigned Medicare billing, Wisconsin enrollment
- 1,377 clinicians in this Medicare group
Rockford, IL 61107
- Reassigned Medicare billing, Illinois enrollment
- 562 clinicians in this Medicare group
Oak Park, IL 60302
- Reassigned Medicare billing, Illinois enrollment
- 826 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 6
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ssm Health St Mary's Hospital - Janesville
Acute Care Hospitals · Janesville, WIOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MADISON, WI 53715
MADISON, WI 53715
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 Hryszczuk's NPI number?
The NPI number for Steven Hryszczuk is 1255368890. It was assigned to this individual provider in the NPPES registry on June 27, 2006.
Where is Steven Hryszczuk located?
Steven Hryszczuk practices at 700 S Park St, Madison, WI 53715. The listed phone number is (608) 251-6100.
What is Steven Hryszczuk's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Steven Hryszczuk enrolled in Medicare?
Yes. Steven Hryszczuk 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 organizations bill Medicare for Steven Hryszczuk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Hryszczuk reassigns Medicare benefits to 3 organizations: Dean Health Systems, Inc (Madison, WI), Orthomidwest, PLLC (Rockford, IL) and North American Partners In Anesthesia (illinois), LLC (Oak Park, IL). 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 Steven Hryszczuk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Steven Hryszczuk affiliated with any hospitals?
According to CMS data, Steven Hryszczuk is affiliated with Ssm Health St Mary's Hospital - Janesville.
When was this NPI record last updated?
The NPPES record for Steven Hryszczuk was last updated on November 24, 2020. 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.
# Steven W. Hryszczuk, D.O. · NPI 1255368890
Anesthesiology physician in Madison, Wisconsin. Individual provider, active in the CMS NPPES registry since June 27, 2006.
## Identity
- **NPI:** 1255368890 (Entity type: Individual)
- **Enumerated:** June 27, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 4000-21 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 700 S PARK ST, Madison, WI 53715
- **Phone:** (608) 251-6100
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Dean Health Systems, Inc (NPI 1053358846, Madison, WI); Orthomidwest, PLLC (NPI 1730136474, Rockford, IL); North American Partners In Anesthesia (illinois), LLC (NPI 1699032524, Oak Park, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Midwestern University, Chicago College Of Osteopathic Med, class of 1997
## Record status
- **NPPES last updated:** November 24, 2020
- **Other identifiers:** Medicaid 1255368890 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1255368890) · Data from the CMS NPPES public registry.