Internal Medicine in Marion, Illinois
Data updated monthly · Last refresh September 2026
17 Internal Medicine providers practice in Marion. Listings are drawn from federal public records and are not endorsements.
Internal Medicine providers in Marion
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. Byron Williamson, DOMarion, IL · No drug or device payments recorded (2025) ·
(618) 998-7000 Dr. Clinton Mohr, M.D.Marion, IL · No drug or device payments recorded (2025) ·
(618) 997-2396 Dr. Colleen Lawler-bjornberg, MD Dr. Earl Rudolph, D.O.Marion, IL · No drug or device payments recorded (2025) ·
(618) 998-7017 Dr. Herman Lyle, M.D.Marion, IL · No drug or device payments recorded (2025) ·
(618) 993-3692 Dr. James Lawler, M.D.Marion, IL · No drug or device payments recorded (2025) · Telehealth ·
(618) 518-7700 Dr. James Richards, MDMarion, IL · No drug or device payments recorded (2025) ·
(618) 998-5610 Dr. Joseph Herman, MDMarion, IL · No drug or device payments recorded (2025) ·
(618) 993-4102 Dr. Kirun Ahmad, D.O.Marion, IL · No drug or device payments recorded (2025) ·
(618) 246-2910 Dr. Liudmila Vasilets, MD Dr. Mannil Ravindranathan, MDMarion, IL · No drug or device payments recorded (2025) ·
(618) 997-2396 Dr. Michael Lawler, MDMarion, IL · $117 in drug and device payments (2025) · Telehealth ·
(618) 993-1111 Dr. Mohammed Rahimparast, MDMarion, IL · No drug or device payments recorded (2025) ·
(618) 993-8551 Dr. Ramesh GuthikondaMarion, IL · No drug or device payments recorded (2025) ·
(618) 998-7000 Dr. Silpa Maddala, M.DMarion, IL · No drug or device payments recorded (2025) ·
(618) 998-7000 Dr. Weiyi Tang, MDMarion, IL · No drug or device payments recorded (2025) ·
(618) 997-5311 Conditions Internal Medicine providers in Marion, Illinois commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Internal Medicine providers. Individual practices vary, so confirm with the provider before booking.
- High blood pressure
- Type 2 diabetes
- High cholesterol
- Preventive care
- Chronic disease management
Common questions
How many Internal Medicine providers are in Marion, Illinois?There are 17 Internal Medicine providers with active NPI records practicing in Marion, according to federal NPPES data refreshed monthly.
What conditions do Internal Medicine providers in Marion treat?Internal Medicine providers in Marion commonly treat high blood pressure, type 2 diabetes, high cholesterol, preventive care, chronic disease management 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 Marion Internal Medicine across Illinois