JILLIAN HYNYNEN LCSW
NPI 1558196428
Social Worker - Clinical in Tustin, CA

Active since September 03, 2024
17541 IRVINE BLVD STE E, TUSTIN, CA 92780(949) 237-2925 Get Directions Write a Review

NPPES record last updated: June 19, 2025. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Jun 19, 2025, Sep 3, 2024 (2 updates tracked since 2024).

About Jillian Hynynen Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JILLIAN HYNYNEN LCSW (NPI 1558196428) is an individual clinical provider in Tustin, California, licensed in California (117609) and active in the NPI registry since September 2024.

NPPES Registry Identity

NPI1558196428
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameJILLIAN HYNYNENCredential: LCSW
Location Address17541 IRVINE BLVD STE ETustin, CA 92780-3158
Mailing Address25 TiaraIrvine, CA 92614-5383 · (703) 598-8036
Sole ProprietorYes
Enumeration DateSeptember 3, 2024
Last NPPES UpdateJune 19, 20252 updates tracked since enumeration
NPPES CertifiedJune 19, 2025
NPI 1558196428 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License Licensed in CA · 117609
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
17541 IRVINE BLVD STE E, Tustin, CA 92780

Other Names 1

Former Name (1)Jillian Bryant

Accepted Insurance

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Acupuncturist
17541 IRVINE BLVD STE E
TUSTIN, CA 92780
Social Worker (Clinical)
17541 IRVINE BLVD STE E
TUSTIN, CA 92780
Pediatrics
17541 IRVINE BLVD STE E
TUSTIN, CA 92780
Pediatrics
17541 IRVINE BLVD STE E
TUSTIN, CA 92780

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Jillian Hynynen's NPI number?

The NPI number for Jillian Hynynen is 1558196428. It was assigned to this individual provider in the NPPES registry on September 3, 2024. The provider is also known as Jillian Bryant.

Where is Jillian Hynynen located?

Jillian Hynynen practices at 17541 Irvine Blvd Ste E, Tustin, CA 92780. The listed phone number is (949) 237-2925.

What is Jillian Hynynen's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

What insurance does Jillian Hynynen accept?

Health plans from BridgeSpan Health Company and Regence BlueCross BlueShield of Utah list Jillian Hynynen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Jillian Hynynen was last updated on June 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.