NPI Portal NPI Lookup & Verification

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

Ms. Jonel Mizerak, LMFT

Marriage & Family Therapist in Pleasant Hill, CA · enumerated 2006.

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

National Provider Identifier

1598856015

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Ms. Jonel Mizerak
Credential LMFT
Sex Female
Practice address Pleasant Hill, CA, 94523
Phone (925) 548-8841
Fax (925) 548-8841
Enumeration date Sep 28, 2006
Last updated in NPPES Jul 20, 2011

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

Taxonomy & licenses

225200000X Physical Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License AT259 (CA) Secondary
106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License MFC48118 (CA) Primary
LMFT · Licensed Marriage and Family Therapist: A licensed therapist specializing in relational and family psychotherapy. About the LMFT 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

Where does Jonel Mizerak practice?
The practice location on file with NPPES is in Pleasant Hill, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jonel Mizerak?
The National Provider Identifier (NPI) for Jonel Mizerak is 1598856015, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-07-20.