About Us

Daniel Kushner, M.D. is the Medical Director of Mid Westchester OB/GYN. He is a Board Certified Obstetrician and Gynecologist M.D. After graduating from University of Pennsylvania in 1998, he entered SUNY Medical University in Syracuse, NY. Dr. Kushner earned his M.D. in 2003. Dr. Kushner went on to complete his residency program at Albert Einstein College of Medicine / Montifiore Medical Center in 2007. He has full privileges at White Plains Hospital. Dr. Kushner is fluent in Swedish and proficient in Spanish.

“I enjoy being an Obstetrician / Gynecologist because of the opportunity it gives me to improve my patient’s lives. I pride myself in my ability to listen carefully to the needs of each individual patient as well as being able to convey information in a calm and respectful manner.”

Samantha K. Kesten, WHNP-BC is a board certified Nurse Practitioner who specializes in women’s health. After graduating from the University of Delaware in 2007, she continued her studies at Columbia University, receiving a B.S.N. and M.S.N. from the School of Nursing. As a Nurse Practitioner, Ms. Kesten works in collaboration with the healthcare team. She is proficient in Spanish and Italian.

“As a Women’s Health Nurse Practitioner, I consider myself to be a passionate and proactive clinician whose main objective is to provide each woman with the fundamental tools she needs to take control of her gynecological health and overall well being. My mission is to provide exceptional, individualized, compassionate and comprehensive care to all women across their lifespan.”

Fernando Mariz, M.D. After graduating from Florida State University with a BSc., and attending medical school, Dr. Mariz completed a residency program in Obstetrics and Gynecology at the University of Toledo Medical Center in Toledo Ohio.

He received special training in robotic surgery including Da Vinci Sl and Xi surgical systems as well as single-port incision technique. Dr. Mariz also speaks several languages besides English. He is fluent in Portuguese and Spanish. He also has a working knowledge of Polish.

According to Dr. Mariz, “The pursuit of a degree in Medicine and the specialty of OBGYN was my life long dream!!! I love helping people and spending time with them to work out their medical concerns. There is nothing better than to see the smile on the face of a patient whose medical problems I have helped resolve.”

Aliye Runyan, M.D. Originally from St. Petersburg, Florida, Aliye graduated from the University of Miami Miller SOM. She did health policy and medical education work in the DC area from 2012-2014. She then completed ob-gyn residency at Wayne State University/Detroit Medical Center.

Aliye’s career interests include family planning, international public health, reproductive rights, medical humanities and wellness, and medical education.

“I chose obgyn as a specialty because of the incredible opportunities to advance women’s health and take care of patients across the spectrum of their lives, including planning their families. Besides my clinical work, I am a consultant on medical education and policies to increase access to reproductive health care for all populations. This practice is a wonderful environment- everyone is welcome here – consider us your medical ‘home’!”