DR. RANDY S WITTMAN MD
NPI 1023165644
Obstetrics & Gynecology in Winfield, IL
About Dr. Randy S Wittman Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RANDY S WITTMAN MD (NPI 1023165644) is an individual obstetrics & gynecology provider in Winfield, Illinois, licensed in Illinois (036-072670) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
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 (PECOS)
Dr. Randy S Wittman Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Randy Wittman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Janesville, WI 53548
- Reassigned Medicare billing, Illinois enrollment
- 671 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 60190 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WINFIELD, IL 60190
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 Randy Wittman's NPI number?
The NPI number for Randy Wittman is 1023165644. It was assigned to this individual provider in the NPPES registry on January 4, 2007.
Where is Randy Wittman located?
Randy Wittman practices at 25 N Winfield Rd, Winfield, IL 60190. The listed phone number is (630) 653-4240.
What is Randy Wittman's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Randy Wittman enrolled in Medicare?
Yes. Randy Wittman is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Randy Wittman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Randy Wittman reassigns Medicare benefits to Mercy Health System Corporation (Janesville, WI). 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 Randy Wittman'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 Randy Wittman was last updated on September 3, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.