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
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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 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
Mailing address1841 Merrick Ave, Merrick, NY 11566-2736

Other providers in Merrick