About the Practice
This is a practice in Frederick, Maryland focused on mental health services.
Practice Context in IntroTherapy
- • IntroTherapy lists 287 mental health practices in Frederick. Farrell John PhD is one of them.
- • 6,790 practices statewide in Maryland are tracked in our directory.
- • Typical psychologist compensation in Maryland: $84,000 – $158,000 (median $97,000). 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 September 2026.
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Frequently asked questions
Where is Farrell John PhD located?
Farrell John PhD is located at 97B McCain Dr, Frederick, MD 21703.
What is the phone number for Farrell John PhD?
You can reach Farrell John PhD at (301) 371-8491.
Providers
1 registered
Provider details sourced from NPI Registry
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