About the Practice
This is a practice in Smithtown, New York focused on mental health services.
Practice Context in IntroTherapy
- • IntroTherapy lists 99 mental health practices in Smithtown. Mark I. Lederway, PHD is one of them.
- • 19,105 practices statewide in New York are tracked in our directory.
- • Typical psychologist compensation in New York: $90,000 – $170,000 (median $104,000). Source: BLS OEWS, state cost-of-labor adjusted.
Data compiled from U.S. state licensing boards, NPI public registry, and verified practice listings. Mental health is a YMYL topic — we prioritize licensed, verified providers only. Methodology & sources · Updated June 2026.
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Provider details sourced from NPI Registry
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