Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Marvin Leibowitz PHD LLC

Organization Clinical Psychologist · NPI 1578809448

Marvin Leibowitz PHD LLC provides Clinical Psychologist services in Ridgewood, New Jersey. Licensed in New Jersey. Registered with an NPI since 2012.

Licensed in
NJ
In the registry since
2012
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

61 N Maple Ave Ste 103
Ridgewood, NJ 07450-3255 Not confirmed with CMS for 13 years — call before visiting
Phone: (201) 445-6378
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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 35S100088200 (NJ)

Record details

NPI number1578809448
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Marvin Leibowitz — Managing Partner · (201) 445-6378
NPI enumeratedDecember 21, 2012
Last updated in NPPESDecember 21, 2012
Mailing address61 N Maple Ave, Suite 103, Ridgewood, NJ 07450-3255

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