Dr. Loreta Kalish is an internist in Walnut Creek, California and is affiliated with multiple hospitals in the area, including John Muir Health-Walnut Creek Medical Center and John Muir Health-Concord Medical Center. She received her medical degree from Kaunas Medical Institute and has been in practice for more than 20 years. Dr. Loreta Kalish has expertise in treating kidney disease, hypertension & high blood pressure, diabetes, among other conditions - see all areas of expertise. Dr. Loreta Kalish accepts Medicare, Aetna, Humana, Blue Cross, United Healthcare - see other insurance plans accepted.