Mark Dewitt Lanyon, PHD
Mark Dewitt Lanyon, PHD is a Cognitive & Behavioral Psychologist in Wilmington, Delaware. Registered with an NPI since 2007.
- In the registry since
- 2007
- Specialties on file
- 2
What do these letters mean?
- PHD — Doctor of Philosophy
- A research doctorate. In healthcare it usually sits alongside a clinical licence.
Practice location Address checks out
2814 W 2nd StWilmington, DE 19805-1807
Phone: (302) 472-0381
Fax: (302) 472-0392
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Pin is approximate — placed at the ZIP-code centre, not the exact door.
Specialties & licences
| Addiction (Substance Use Disorder) Counselor (primary) | Taxonomy 101YA0400X |
|---|---|
| Cognitive & Behavioral Psychologist | Taxonomy 103TB0200X |
Record details
| NPI number | 1417008137 |
|---|---|
| Entity type | Individual (Type 1) |
| Gender | Male |
| Credentials | PHD |
| Sole proprietor | No |
| NPI enumerated | January 16, 2007 |
| Last updated in NPPES | September 11, 2025 |
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Dr. Brian Eric Ashenfelter, PSYD
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-
Dr. Karla Bailey, PSYD
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Dr. Harvey G Doppelt, PHD
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Ieso Digital Health
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Dr. Marsha S Orlov, EDD
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Dr. Kathleen Marie Rupertus, PSYD
501 Silverside Rd Ste 145, Wilmington, DE 19809-1374 · (302) 388-7515
-
The Anxiety and Ocd Treatment Center, LLC
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Dr. Darren Lee Whaley, PSYD
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