DR. CAROL KORZEN MD
NPI 1235183229
Obstetrics & Gynecology in Elgin, IL
About Dr. Carol Korzen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CAROL KORZEN MD (NPI 1235183229) is an individual obstetrics & gynecology provider in Elgin, Illinois, licensed in Illinois (36110863) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS, is affiliated with Advocate Sherman Hospital, and is a graduate of Rush Medical College Of Rush University (2000).
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 and accepts Medicare assignment
Dr. Carol Korzen 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 Carol Korzen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Bannockburn, IL 60015
- Reassigned Medicare billing, Illinois enrollment
- 120 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 4
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Advocate Sherman Hospital
Acute Care Hospitals · Elgin, ILPresence Saint Joseph Hospital - Elgin
Acute Care Hospitals · Elgin, ILNorthwestern Medicine Central Dupage Hospital
Acute Care Hospitals · Winfield, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60123 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.
Reported Quality Measures
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.
ELGIN, IL 60123
ELGIN, IL 60123
ELGIN, IL 60123
ELGIN, IL 60123
ELGIN, IL 60123
ELGIN, IL 60123
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 Carol Korzen's NPI number?
The NPI number for Carol Korzen is 1235183229. It was assigned to this individual provider in the NPPES registry on May 22, 2006.
Where is Carol Korzen located?
Carol Korzen practices at 1435 N Randall Rd Suite 309, Elgin, IL 60123. The listed phone number is (847) 741-7990.
What is Carol Korzen's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Carol Korzen enrolled in Medicare?
Yes. Carol Korzen 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 Carol Korzen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Carol Korzen reassigns Medicare benefits to Midwest Center For Women's Health Care, Ltd. (Bannockburn, 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 Carol Korzen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Carol Korzen affiliated with any hospitals?
According to CMS data, Carol Korzen is affiliated with Advocate Sherman Hospital, Presence Saint Joseph Hospital - Elgin and Northwestern Medicine Central Dupage Hospital.
When was this NPI record last updated?
The NPPES record for Carol Korzen was last updated on December 21, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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. Carol Korzen, MD · NPI 1235183229
Obstetrics & Gynecology physician in Elgin, Illinois. Individual provider, active in the CMS NPPES registry since May 22, 2006.
## Identity
- **NPI:** 1235183229 (Entity type: Individual)
- **Enumerated:** May 22, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 36110863 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1435 N RANDALL RD, SUITE 309, Elgin, IL 60123-2300
- **Phone:** (847) 741-7990 · **Fax:** (847) 741-8099
## 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:** Midwest Center For Women's Health Care, Ltd. (NPI 1447200654, Bannockburn, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Rush Medical College Of Rush University, class of 2000
## Record status
- **NPPES last updated:** December 21, 2021
- **Other identifiers:** Medicaid 36110863 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1235183229) · Data from the CMS NPPES public registry.