David L. Zehrung, PHD

Practice Context in IntroTherapy

• • IntroTherapy lists 4 mental health practices in Greencastle. David L. Zehrung, PHD is one of them.
• • 13,232 practices statewide in Pennsylvania are tracked in our directory.
• • Typical psychologist compensation in Pennsylvania: $78,000 – $147,000 (median $90,000). 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 July 2026.