NPI Portal NPI Lookup & Verification

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

Dr. Joel David Ziff, ED.D., PSYCHOLOGIST

Psychologist in Newton Center, MA · enumerated 2006.

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

National Provider Identifier

1154484822

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Joel David Ziff
Credential ED.D., PSYCHOLOGIST
Sex Male
Practice address Newton Center, MA, 02459
Phone (617) 965-3932
Enumeration date Dec 17, 2006
Last updated in NPPES Jul 8, 2007

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 2485 (MA) Primary

Other identifiers

Identifier Type State Issuer
W02624 Other MA BLUE CROSS BLUE SHIELD

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

What is the NPI number for Joel Ziff?
The National Provider Identifier (NPI) for Joel Ziff is 1154484822, a Type 1 (individual) record in the CMS NPPES registry.
Where does Joel Ziff practice?
The practice location on file with NPPES is in Newton Center, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.