Obstetrics & Gynecology in Belleville, Illinois
Data updated monthly · Last refresh September 2026
10 Obstetrics & Gynecology providers practice in Belleville. Listings are drawn from federal public records and are not endorsements.
Obstetrics & Gynecology providers in Belleville
Listed alphabetically. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Frank Mussemann, M.D.Belleville, IL · No drug or device payments recorded (2025) ·
(618) 233-0017 Dr. Helen Mussemann, M.D.Belleville, IL · No drug or device payments recorded (2025) ·
(618) 233-0017 Dr. James Hobby, MDBelleville, IL · No drug or device payments recorded (2025) ·
(618) 398-8840 Dr. John Hucker, M.D.Belleville, IL · No drug or device payments recorded (2025) ·
(618) 355-7745 Dr. Lorna O'young, M.D.Belleville, IL · No drug or device payments recorded (2025) ·
(618) 236-7555 Dr. Michael Herrmann, M.D.Belleville, IL · $272 in drug and device payments (2025) ·
(618) 235-8600 Dr. Steven Mathus, M.D.Belleville, IL · No drug or device payments recorded (2025) ·
(618) 233-0017 Dr. Vicente Colon-alcaraz, MDBelleville, IL · No drug or device payments recorded (2025) ·
(618) 394-0712 Dr. Walter Yee, D.O.Belleville, IL · No drug or device payments recorded (2025) ·
(618) 394-0712 Dr. William Chadwick, M.D.Belleville, IL · $44 in drug and device payments (2025) ·
(618) 234-2390 Conditions Obstetrics & Gynecology providers in Belleville, Illinois commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Obstetrics & Gynecology providers. Individual practices vary, so confirm with the provider before booking.
- Pregnancy care
- Endometriosis
- Fibroids
- PCOS
- Menopause
- Contraception
Common questions
How many Obstetrics & Gynecology providers are in Belleville, Illinois?There are 10 Obstetrics & Gynecology providers with active NPI records practicing in Belleville, according to federal NPPES data refreshed monthly.
What conditions do Obstetrics & Gynecology providers in Belleville treat?Obstetrics & Gynecology providers in Belleville commonly treat pregnancy care, endometriosis, fibroids, PCOS, menopause and related conditions. Individual practices vary, so confirm with the provider before booking.
Where does this data come from?Provider records come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
All specialties in Belleville Obstetrics & Gynecology across Illinois