Field office and facility location for LI both point to
Pilgrim PC, Building 45-3
998 Crooked Hill Road
West Brentwood, NY 11717-1087
Then there's just a facility here
SAGAMORE CHILDREN'S PSYCHIATRIC CENTER
197 Half Hollow Road
Dix Hills, NY 11746
Here is whats listed for Pilgrim. Freq and call sign. I ran them thru the fcc and only one is expired. Try those freqs and see if they help..
155.0700 KRO257 BUILDING 18 Pilgrim Psychiatric Center Active
460.3000 WPZP495 998 CROOKED HILL ROAD PILGRIM PSYCHIATRIC CENTER Active
464.5750 KNBC354 BLDG 36 PILGRIM PSYCHIATRIC CENTER Pilgrim Psychiatric Center Expired
461.2000 WPKU299 BLDG 23 PILGRIM STATE HOSPITAL PILGRIM PSYCHIATRIC CENTER Active
464.1250 WPJH932 BUILDING 36 PILGRIM PSYCHIATRIC CENTER Active
462.7500 WQBI309 197 HALF HOLLOW RD DIX HILLS SAGAMORE PSYCHIATRIC CENTER Active