Marvin Leibowitz PH.D. LLC
NPI 1578809448 · Clinical Psychologist · Ridgewood, NJ
Marvin Leibowitz PH.D. LLC is a Clinical Psychologist organization in Ridgewood, NJ (NPI 1578809448).
Provider details
- NPI number
- 1578809448
- Entity type
- Organization
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Marvin Leibowitz, Managing Partner(201) 445-6378
- License
- 35S100088200 (NJ)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-12-21
- Last updated
- 2012-12-21
Frequently asked questions
- What is Marvin Leibowitz PH.D. LLC's NPI number?
- Marvin Leibowitz PH.D. LLC's National Provider Identifier (NPI) is 1578809448, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Marvin Leibowitz PH.D. LLC?
- Marvin Leibowitz PH.D. LLC is classified in the NPPES registry as Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Marvin Leibowitz PH.D. LLC located?
- Marvin Leibowitz PH.D. LLC's practice location on file with NPPES is 61 N Maple Ave, Ridgewood, NJ 07450-3255.
- What is Marvin Leibowitz PH.D. LLC's phone number?
- The practice phone number listed in the NPPES registry for Marvin Leibowitz PH.D. LLC is (201) 445-6378.
- Who is the authorized official for Marvin Leibowitz PH.D. LLC?
- The authorized official listed on Marvin Leibowitz PH.D. LLC's NPPES record is Marvin Leibowitz, Managing Partner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Marvin Leibowitz PH.D. LLC's NPI active?
- Yes — Marvin Leibowitz PH.D. LLC's NPI (1578809448) is active in the NPPES registry as of the last update on 2012-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.