Lieb Mark MD

Matthew R Mannini, DO is a board-certified physician, specializing in Internal medicine. With an office conveniently located in Brewster, NY, Dr. Mannini can help with your everyday health needs, from regular checkups to caring for you when you’re injured or ill. At Optum, primary care physicians can oversee all your health care needs. We care for short-term health problems like the common cold or a sprained ankle. Or, long-term health problems, such as allergies, high blood pressure, heart disease and diabetes. Our doctors will work with specialists to make sure you get any extra care you might need. Optum accepts most major health plans.

Donna Finkelstein, MD is a board-certified physician, specializing in Internal medicine. With an office conveniently located in Brewster, NY, Dr. Finkelstein can help with your everyday health needs, from regular checkups to caring for you when you’re injured or ill. At Optum, primary care physicians can oversee all your health care needs. We care for short-term health problems like the common cold or a sprained ankle. Or, long-term health problems, such as allergies, high blood pressure, heart disease and diabetes. Our doctors will work with specialists to make sure you get any extra care you might need. Optum accepts most major health plans.

At Optum, our board-certified OBGYNs focus on the individual needs of women, offering comprehensive care along with a variety treatment options. We specialize in obstetrics (pregnancy and childbirth), gynecological care, menopausal care, preventative health and healthy living to address the issues women face throughout their lifetime. Our practices are dedicated to delivering the best possible experience for every patient. This includes providing comprehensive obstetrical and gynecological care, routine annual visits, breastfeeding support, birth control options, comprehensive menopausal functional and anti-aging preferences, and same-day appointments for urgent care needs whenever possible.