Jay Warden, 43, is joining the Chicago office of The Camden Group as senior advisor. Warden comes to Camden from JW1 Ventures & Consulting, a Chicago-based health care consulting firm he founded. Warden also had served as senior vice president at Kaufman Hall Associates, where he led the firms physician strategy practice. He had a similar role at Sg2, an international healthcare intelligence and consulting firm. Warden holds master's degrees in business and health services administration from the University of Michigan, Ann Arbor, Mich., and a bachelor of arts degree in government from Dartmouth College, N.H.