LAWRENCE CHEN PHD
NPI 1093305823
Psychologist in Irvine, CA

Active since January 25, 2021PECOS Enrolled
4255 CAMPUS DR STE A245, IRVINE, CA 92612(949) 502-0736 Get Directions Write a Review

NPPES record last updated: July 16, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 16, 2026, Jan 25, 2021 (2 updates tracked since 2021).

About Lawrence Chen Phd NPPES

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

LAWRENCE CHEN PHD (NPI 1093305823) is an individual psychologist in Irvine, California, licensed in California (18649) and active in the NPI registry since January 2021. He is enrolled in Medicare PECOS and is a graduate of Other (1995).

NPPES Registry Identity

NPI1093305823
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameLAWRENCE CHENCredential: PHD
Location Address4255 CAMPUS DR STE A245Irvine, CA 92612-8630
Mailing Address3835 N Freeway Blvd Ste 100Sacramento, CA 95834-1954
Sole ProprietorNo
Medical School CMSOtherGraduated 1995
Enumeration DateJanuary 25, 2021
Last NPPES UpdateJuly 16, 20262 updates tracked since enumeration
NPPES CertifiedJuly 16, 2026
✔ NPI 1093305823 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License✔ Licensed in CA · 18649
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
Also ListedPsychologist · ClinicalTaxonomy 103TC0700X · License 18649 (CA)
4255 CAMPUS DR STE A245, Irvine, CA 92612

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Lawrence Chen Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4082171616
PECOS Enrollment IDI20260804002420
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Lawrence Chen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Psychiatry
5100 N 6TH ST, STE 135
Fresno, CA 93710
  • Reassigned Medicare billing, California enrollment
  • Medicare enrollment name: Mark David Levine MD Professional Corporation
  • 329 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

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

Marriage & Family Therapist
4255 CAMPUS DR STE A245
IRVINE, CA 92612
Psychiatry & Neurology (Psychiatry)
4255 CAMPUS DR STE A245
IRVINE, CA 92612
Marriage & Family Therapist
4255 CAMPUS DR STE A245
IRVINE, CA 92612
Marriage & Family Therapist
4255 CAMPUS DR STE A245
IRVINE, CA 92612
Social Worker
4255 CAMPUS DR STE A245
IRVINE, CA 92612
Marriage & Family Therapist
4255 CAMPUS DR STE A245
IRVINE, CA 92612
Nurse Practitioner (Psychiatric/Mental Health)
4255 CAMPUS DR STE A245
IRVINE, CA 92612
Marriage & Family Therapist
4255 CAMPUS DR STE A245
IRVINE, CA 92612

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 Lawrence Chen's NPI number?

The NPI number for Lawrence Chen is 1093305823. It was assigned to this individual provider in the NPPES registry on January 25, 2021.

Where is Lawrence Chen located?

Lawrence Chen practices at 4255 Campus Dr Ste A245, Irvine, CA 92612. The listed phone number is (949) 502-0736.

What is Lawrence Chen's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Lawrence Chen enrolled in Medicare?

Yes. Lawrence Chen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Lawrence Chen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lawrence Chen reassigns Medicare benefits to Mark David Levine, MD Fresno (Fresno, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Lawrence Chen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Lawrence Chen was last updated on July 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.