As of my last knowledge update in September 2021, Stony Brook University offered a Nurse Practitioner (NP) program with various tracks such as Family Nurse Practitioner (FNP) or Adult-Gerontology Primary Care Nurse Practitioner (AGPCNP). The length of NP programs can vary depending on the specific program and the level of education you are pursuing (e.g., Master's or Doctorate). Typically, a Master of Science in Nursing (MSN) program to become an NP can take around 2 to 3 years to complete, while a Doctor of Nursing Practice (DNP) program may take longer, often around 3 to 4 years.
Please note that program lengths and requirements can change, so I recommend visiting Stony Brook University's official website or contacting their admissions office for the most up-to-date information regarding their Nurse Practitioner programs, including the program length and any recent updates or changes.