John Diehl is a Mental Health Counselor based in West Sayville, NY and is specialized in Mental Health. John Diehl practices in West Sayville, NY and has the professional credentials of MS. The NPI Number for John Diehl is 1619187101 and holds a License No. 001807-1 (New York).
The current practice location address for John Diehl is 131 Cherry Ave, West Sayville, NY and can be reached out via phone at 631-834-5809.
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