• In private Practice on Long Island for 40 years with special interest in the management of Adult Mood Disorders, Dementias, Psychiatric Manifestations of Medical and Neurologic Illness, Mental Retardation, Autism and Schizophrenias.
  • Diplomate American Board of Psychiatry & Neurology with added qualification in Geriatric Psychiatry.
  • Former Adjunct Professor of Psychiatry, State University at Stony Brook.
  • Distinguished Life Fellow, American Psychiatric Association. Member American Academy of Psychoanalysis and Dynamic Psychiatry, Greater Long Island Psychiatric Society and NY Academy of Sciences.
  • Former Hospital Affiliations:
    • Good Samaritan Hospital, West Islip, NY
    • Winthrop University Hospital, Mineola, NY
    • South Oaks Hospital, Amityville, NY
    • Long Island Jewish Hospital, New Hyde Park, NY
    • Southside Hospital, Bayshore, NY
  • Listed in Castle Connolly Guide: How To Find The Best Doctor For You and Your Family - New York Metro Area 1994 to 2016.
  • Listed among the best psychiatrists in the USA at: and Recipient of the Patients' Choice Award 2012.
  • Ranked among Top Ten Psychiatrists on Long Island by Newsday 2008 through 2020.

Medical and Informational Forms

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Contact Information

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Jack Nass, MD, FAPA
2100 Deer Park Avenue, Suite 8
Deer Park, NY 11729
Tel: 631.321.7697
Fax: 631.321.6140