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

Individual provider Clinical Psychologist · NPI 1023136231

Dr. Mark Lawrence Dayboch, PSYD is a Clinical Psychologist in Smithtown, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2007
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

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Practice location Address checks out

119 Fifty Acre Rd S
Smithtown, NY 11787-2034
Phone: (631) 979-9294
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 009516-1 (NY)

Record details

NPI number1023136231
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorYes
NPI enumeratedMarch 26, 2007
Last updated in NPPESJuly 8, 2007
Mailing address119 Fifty Acre Rd S, Smithtown, NY 11787-2034

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