MR. John Diehl, MS is a mental health counselor in West Sayville, NY. MR. John Diehl, MS NPI is 1619187101. The provider is registered as an individual entity type.
The NPPES NPI record indicates the provider is a male.
The provider's business location address is:
131 CHERRY AVE
WEST SAYVILLE, NY
ZIP 11796-214
Phone: (631) 834-5809
The enumeration date for this NPI number is 5/23/2007 and was last updated on 7/8/2007.