Garth Davis, M.D., practices internal medicine at the NorthBay Center for Primary Care in Vacaville.

Dr. Davis earned his medical degree from Oregon Health Science University School of Medicine. He completed his internship and internal medicine residency at David Grant Medical Center, Travis Air Force Base and U.C. Davis. He is board-certified in internal medicine.

Michelle Katzaroff, D.O., has joined the NorthBay Center for Primary Care in Vacaville.

Dr. Katzaroff earned her doctor of osteopathy degree from Touro University of Osteopathic Medicine in Vallejo. She completed her residency in internal medicine at Alameda County Medical Center in Oakland.

She is available to care for patients age 18 and older and has a special interest in geriatrics, pain management, health promotion and wellness. She is board-eligible in internal medicine.

Nancy McAfee, M.D., practices internal medicine and pediatrics at the NorthBay Center for Primary Care in Vacaville. She earned her medical degree from Creighton University School of Medicine in Omaha, Neb. Dr. McAfee completed an internal medicine and pediatrics combined residency at University of Missouri Kansas City, Mo., which is affiliated with Truman Medical Center, The Children’s Mercy Hospital and St. Luke’s Hospital. She is board-eligible in internal medicine and pediatrics.