Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Ari Steven Pizer, PSYD

Psychologist in Philadelphia, PA · enumerated 2019 · practices at Asp Therapy LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1588122139

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Registry record

Entity type Individual (Type 1)

Name Dr. Ari Steven Pizer

Credential PSYD

Sex Male

Practice address Philadelphia, PA, 19103

Phone (215) 341-3494

Enumeration date Mar 2, 2019

Last updated in NPPES Mar 2, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PS018660 (PA) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1588122139 active?

Yes, as of the latest NPPES snapshot, NPI 1588122139 is active (record last updated 2019-03-02).

How do I verify Ari Pizer's NPI record?

Cross-check NPI 1588122139 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Stewart Hockenberry Counseling Psychologist · Philadelphia, PA NPI 1881750271 Asp Therapy LLC Community/Behavioral Health Agency · Philadelphia, PA NPI 1841758497

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-02.