Carol Korzen, MD
Obstetrics & Gynecology Physician · Elgin, IL
Carol Korzen, MD is an obstetrics & gynecology physician with a practice address in Elgin, Illinois, and NPI 1235183229, issued on May 22, 2006. Check the license (Illinois 36110863, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Carol Korzen
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 36110863 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1435 N Randall RD, Elgin, IL 60123
- Phone
- (847) 741-7990
- Enumerated
- May 22, 2006
- Record last updated
- Dec 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (847) 741-8099
- Medicaid ID
- 36110863 IL
- Medicare enrollment
- Enrolled (PECOS I20040804000961); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2000
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 2,062 in Illinois → Look up another NPI →
Also registered at 1435 N Randall RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeness Barthel, M.D.Obstetrics & Gynecology Physician1588780795
- Sharon Bode, FNPFamily Nurse Practitioner1932179751
- John Brems, M.D.Surgery Physician1437139094
- Karthik Challa, M.D.Interventional Cardiology Physician1619293131
- Joong Choh, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1508821778
- Christine Estes, MDObstetrics & Gynecology Physician1811942642
Verify Carol Korzen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 36110863Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
117 Medicare Part D claims for 56 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Estradiol40 claims
- Clobetasol Propionate24 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 75.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $56.62
3 payments; by number, the most common kind was food and beverage; the largest payer was CooperSurgical, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Midwest Center For Women's Healthcare, LtdElgin, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Carol Korzen among 2,062 obstetrics & gynecology physician records in Illinois
Carol Korzen, MD is one of 2,062 obstetrics & gynecology physician records with a practice address in Illinois. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2000 · median 2006 among the 1,168 with a school on file
- Record last updated2021 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Illinois
There are 2,062 obstetrics & gynecology physician records in Illinois.
All 2,062 in Illinois → Every provider in Elgin → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Jeness Barthel, M.D.Elgin, IL 601231588780795
- Brad Epstein, M.D.Elgin, IL 601231699773101
- Christine Estes, MDElgin, IL 601231811942642
- Jessica Flynn, M.D.Elgin, IL 601231992933782
- Lindsey Graff, D.O.Elgin, IL 601231073907663
- Jessica Hyde, DOElgin, IL 601231225769599
- Debra Jaryszak, M.D.Elgin, IL 601231659434579
- Rachel Kulsakdinun, M.D.Elgin, IL 601231407950421
Common questions
What is Carol Korzen, MD's NPI number?
Carol Korzen, MD's National Provider Identifier (NPI) is 1235183229, issued on May 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Carol Korzen, MD located?
The NPPES record lists a practice address at 1435 N Randall RD, Elgin, IL, 60123. Phone: (847) 741-7990. Providers update this record themselves, so call before visiting.
How can I verify Carol Korzen, MD's license?
NPPES lists Illinois license number 36110863, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Carol Korzen, MD prescribe under Medicare Part D?
In 2024, Carol Korzen, MD had 117 Medicare Part D claims for 56 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
What is Carol Korzen, MD's MIPS final score?
The 2023 MIPS final score is 75.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.