News Network Harmanjot K. Grewal, MD, Joins North Oaks Rheumatology Clinic Posted By Melanie Zaffuto June 6, 2017 Featured Media Release Dr. Harmanjot K. Grewal has joined North Oaks Rheumatology in Hammond and is accepting new patients. She is certified by the American Board of Internal Medicine in internal medicine and rheumatology. To schedule an appointment with Dr. Grewal or for more information on accepted insurance plans, call ... Continue Reading