Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Mark Sehl, PHD, LCSW

Individual provider Clinical Social Worker · NPI 1063702462

Dr. Mark Sehl, PHD, LCSW is a Clinical Social Worker in New York, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2011
Specialties on file
3
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

59 W 9th St
New York, NY 10011-8901 Not confirmed with CMS for 15 years — call before visiting
Phone: (212) 228-3467
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence PR004650-1 (NY)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X
Psychoanalyst Taxonomy 102L00000X

Record details

NPI number1063702462
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD , LCSW
Sole proprietorYes
NPI enumeratedApril 19, 2011
Last updated in NPPESApril 21, 2011

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