Beginning in 1973, Balboa has grown from two physicians to a comprehensive nephrology team of over 50 board certified physici ... ans and 8 advanced practitioners. On January 1, 2018, Balboa Nephrology Medical Group (BNMG) launched Balboa United, a full-service medical practice management services organization. From one small office, BNMG now has 24 clinical offices throughout San Diego, Imperial, Orange and Riverside counties. In addition to office and hospital-based patient care, Balboa physicians manage the dialysis treatments of approximately 4,500 patients at 88 dialysis centers and conduct Nephrology based clinical research at 6 centers throughout Imperial and San Diego counties (California Institute of Renal Research). read more