Internal Medicine in Crystal Lake, Illinois
Data updated monthly · Last refresh September 2026
18 Internal Medicine providers practice in Crystal Lake. Listings are drawn from federal public records and are not endorsements.
Internal Medicine providers in Crystal Lake
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. Abhirami RavichandranCrystal Lake, IL · No drug or device payments recorded (2025) ·
(779) 220-5500 Dr. Barbara Burrell, MDCrystal Lake, IL · No drug or device payments recorded (2025) · Telehealth ·
(815) 455-6000 Dr. Carol Kotzan, M.D.Crystal Lake, IL · No drug or device payments recorded (2025) ·
(815) 455-7200 Dr. Daniela Huerta De Hathaway, MDCrystal Lake, IL · No drug or device payments recorded (2025) · Telehealth ·
(815) 338-6600 Dr. George Gancayco, M.D.Crystal Lake, IL · No drug or device payments recorded (2025) ·
(815) 459-2200 Dr. Gilbert Egekeze, MDCrystal Lake, IL · $1,020 in drug and device payments (2025) · Telehealth ·
(815) 477-7800 Dr. Jonathan Huang, M.D.Crystal Lake, IL · No drug or device payments recorded (2025) ·
(815) 455-6000 Dr. Lindsay Esch, M.D.Crystal Lake, IL · No drug or device payments recorded (2025) · Telehealth ·
(815) 338-6600 Dr. Marvin Salzmann, MDCrystal Lake, IL · No drug or device payments recorded (2025) ·
(815) 455-1344 Dr. Mukesh Arora, MDCrystal Lake, IL · $1,158 in drug and device payments (2025) ·
(815) 455-8600 Dr. Raman Popli, MDCrystal Lake, IL · No drug or device payments recorded (2025) ·
(815) 363-6055 Dr. Robert Brizzolara, M.D.Crystal Lake, IL · No drug or device payments recorded (2025) ·
(815) 455-6000 Dr. Sanjeev Gupta, MDCrystal Lake, IL · $40 in drug and device payments (2025) · Telehealth ·
(815) 479-7490 Dr. Sonia Mehta, M.D.Crystal Lake, IL · $19 in drug and device payments (2025) ·
(815) 338-6600 Dr. Syed Asghar, M.D.Crystal Lake, IL · $79 in drug and device payments (2025) ·
(815) 459-3030 Dr. Syed Haider, M.D.Crystal Lake, IL · $23 in drug and device payments (2025) · Telehealth ·
(815) 455-6000 Dr. William Stinson, MDCrystal Lake, IL · No drug or device payments recorded (2025) · Telehealth ·
(815) 338-6600 Dr. Zbigniew Lorenc, MDCrystal Lake, IL · $166 in drug and device payments (2025) ·
(815) 338-6600 Conditions Internal Medicine providers in Crystal Lake, 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 Crystal Lake, Illinois?There are 18 Internal Medicine providers with active NPI records practicing in Crystal Lake, according to federal NPPES data refreshed monthly.
What conditions do Internal Medicine providers in Crystal Lake treat?Internal Medicine providers in Crystal Lake 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 Crystal Lake Internal Medicine across Illinois