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

Dr. Mark S. Weiss, PSYD

Individual provider Clinical Psychologist · NPI 1003116831

Dr. Mark S. Weiss, PSYD is a Clinical Psychologist in Merrick, New York. Practices as a sole proprietor. Licensed in New York.

Licensed in
NY
In the registry since
2010
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

See every abbreviation used in this directory →

Practice location Address checks out

1841 Merrick Ave
Merrick, NY 11566-2736
Phone: (516) 374-6577
Fax: (516) 546-0654
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 01970 (NY)

Record details

NPI number1003116831
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorYes
NPI enumeratedOctober 27, 2010
Last updated in NPPESOctober 27, 2010

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