Rheumatic Disease Center Physicians was started in 1978, by Dr. Kenneth Crane and Dr. David Sager, to provide consultative and continuing care for individuals with rheumatic disease in the area encompassing nortwest Chicago, the northwest suburbs and the North Shore. Thanks to our supportive patients and referring physicians, we have been able to grow our practice to four board certified rheumatologists who serve over 4,000 patients.


David S. Sager, M.D.


David S. Sager, M.D. was born in Chicago and grew up in Highland Park.  He attended undergraduate college at Tufts University in Boston, and medical school at the University of Illinois in Chicago.  Internship and Residency in Internal Medicine were at the University of Illinois Hospitals in Chicago, and he did his Fellowship in Rheumatology at Parkland, Hospital in Dallas Texas.  He studied there with Dr. Morris Ziff who was one of the founders of the specialty of Rheumatology.  In Dallas, Dr. Sager was the recipient of an NIH Fellowship grant to do research in Rheumatic Diseases. Dr. Sager is Board Certified in both Internal Medicine as well as his specialty of Rheumatology.  

Dr. Sager has served on the Research and Education Committee of the Illinois Chapter of the Arthritis Foundation, and as President of the Chicago Rheumatism Society.  He is also a founding fellow of the American College of Rheumatology.  He lives with his wife Karen in Highland Park.  Dr. Sager has three children, and 4 grandchildren. 

Sergey Furmanov, M.D.


Dr. Furmanov received his Bachelor of Science in Biology from the University of Illinois at Chicago having graduated with College Honors and Departmental Distinction. This was shortly after he made a transition from studying in the Ukraine at the Crimean Medical Institute. He then went on to receive his Doctorate of Medicine from Rush University Medical School and completed residency in Internal Medicine at McGaw Medical Center of Northwestern University. Dr. Furmanov then returned to his Alma Mater, Rush University in Chicago, to complete his fellowship in Rheumatology. Throughout his studies he was involved in multiple research projects in biochemistry, cardiology, and clinical rheumatology, but taking care of patients turned out to be the most rewarding and interesting part of being a highly trained medical subspecialist. Dr. Furmanov continues to learn to improve the quality of patient care. His technical armamentarium has been enriched with an ability to employ ultrasound technology for diagnostic and therapeutic procedures including joint injections with improved accuracy and better outcomes for patients. Dr. Furmanov also speaks fluent Russian, Ukranian and basic conversational Polish.

Nisarg P. Gandhi, M.D.

Dr. Nisarg Gandhi has joined the Rheumatic Disease Center Physicians soon after completing rheumatology fellowship training at Rush University Medical Center, Chicago.  He did his internal medicine residency at Weiss Memorial hospital, Chicago.  Prior to that he finished his medical school education in one of the most prestigious medical schools in India, B. J. Medical college, Ahmedabad.  He was awarded and honored by the present Prime minister of India (former Chief minister of the state of Gujarat) for being the first ranker and having the outstanding performance in the statewide board examination preceding the medical school admission.  During fellowship, he was involved in multiple small and large scale research studies and presented his work at multiple national and international professional meetings.  During his fellowship training he gained expertise in taking care of patients with lupus and osteoporosis. He has special interest in taking care of patients with rheumatoid arthritis and gout.  He received specialized training in performing joint procedures under ultrasound guidance.

Dr. Gandhi is fluent in Gujarati, Hindi and Urdu.

Dr. Olga Goodman, M.D.

Dr. Olga Goodman graduated with honors from Nizhny Novgorod State Medical Academy, Russia, and practiced medicine as an obstetrician and gynecologist for 10 years prior to moving to the USA in 2006. Upon arrival she completed an Internal Medicine and Pediatrics residency program at the West Michigan University followed by a rheumatology fellowship at the Baylor College of Medicine/MD Anderson Cancer Center in Houston, Texas. As one of a few triple board-certified rheumatologists in the country she actively maintains her certifications. She attends professional conferences and meetings and serves as an adviser at some of them. Prior to joining Rheumatic Disease Center Physicians she worked at a large multi-specialty group seeing patients with a variety of rheumatic and orthopedic conditions. Dr. Goodman has extensive training in diagnostic and procedural musculoskeletal ultrasound. She is experienced in performing joint and tendon sheaths aspirations and injections, nerve blocks, myofascial injections and other ultrasound guided procedures.  She was a Grand Prize Winner of the year in ACR Image competition at the 2014 Annual American College of Rheumatology meeting. 


150 N. River Road, Suite 270

Des Plaines, Illinois 60016

For life-threatening emergencies call 911
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