The Arc Westchester Announces Appointment of New Medical Director of its Wellness Center

Alla Nirenberg, M.D. joins the organization, which supports 2,000 individuals with developmental disabilities throughout Westchester County

Westchester, N.Y. (January 29, 2020) – The Arc Westchester is pleased to announce that Alla Nirenberg, M.D., board certified psychiatrist, has been named medical director of the organization’s Wellness Center. In addition to overseeing the clinic, Dr. Nirenberg is also responsible for all psychiatric evaluations and medication management for individuals with developmental disabilities supported by the organization. “We are thrilled with the addition of Dr. Nirenberg to our team,” said Tibi Guzmán, Executive Director and CEO of The Arc Westchester. “She brings a passion for working with this population and sensitivity to the needs of individuals with developmental disabilities and their families that is integral for this role.”

Dr. Nirenberg has worked with individuals with developmental disabilities throughout her career. She served as a medical director at Putnam ARC for more than 20 years, where she treated patients (including evaluations, assessments and medication management), as well as overseeing a team of mental health professionals and the supervision, evaluation and review of medical charts and policies. Dr. Nirenberg has been a staff member of the Westchester Institute of Human Development since 2001 and has been affiliated with Westchester Medical Center/New York Medical College since her residency in 1992. She also has a private practice in the White Plains area.

“I look forward to working with the individuals supported by The Arc Westchester’s Wellness Center and am thrilled with this opportunity,” said Dr. Nirenberg.

For more information on how you can support The Arc Westchester, visit –

About The Arc Westchester
The Arc Westchester, founded in 1949, is the largest agency in Westchester County supporting children, teens and adults with intellectual and developmental disabilities, including individuals on the autism spectrum, and their families. Over 800 employees provide more than 2,000 individuals throughout the county with a broad range of innovative and effective programs and services designed to foster independence, productivity and participation in community life.

The mission of The Arc Westchester is to empower children, teens and adults with intellectual and developmental disabilities, including individuals on the autism spectrum, to achieve their potential by strengthening families and encouraging personal choices, abilities and interests. For more information, please visit

The Arc Westchester is a chapter of The Arc USA and The Arc New York.

donate icon

With your support, we can continue to provide innovative service and support for children, teens and adults with developmental disabilities.

phone icon for contact us
Contact Us

Find out more about our services, career and employment support, volunteer activities, and open positions at The Arc Westchester.

mail icon
Sign Up

Join our mailing list and receive information about events, legislative issues and other news updates.