DR. DERIK HOSSEPIAN PSY.D.
NPI 1477163004
Psychologist in North Hollywood, CA

Active since August 07, 2020PECOS EnrolledAccepts Medicare Assignment
4605 LANKERSHIM BLVD STE 545, NORTH HOLLYWOOD, CA 91602(818) 261-3130(855) 568-6438 Get Directions Write a Review

NPPES record last updated: February 11, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Feb 7, 2026, Oct 10, 2024, Aug 7, 2020 (3 updates tracked since 2020).

About Dr. Derik Hossepian Psy.d. NPPES

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

DR. DERIK HOSSEPIAN PSY.D. (NPI 1477163004) is an individual psychologist in North Hollywood, California, licensed in California (34310) and active in the NPI registry since August 2020. He is enrolled in Medicare PECOS, maintains a secondary practice location in Encino, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1477163004
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameDR. DERIK HOSSEPIANCredential: PSY.D.
Location Address4605 LANKERSHIM BLVD STE 545North Hollywood, CA 91602-1818
Mailing Address4605 Lankershim Blvd Ste 545North Hollywood, CA 91602-1818 · (818) 261-3130 · Fax (855) 568-6438
Fax(855) 568-6438
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateAugust 7, 2020
Last NPPES UpdateFebruary 11, 20263 updates tracked since enumeration
NPPES CertifiedFebruary 11, 2026
✔ NPI 1477163004 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License✔ Licensed in CA · 34310
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.
4605 LANKERSHIM BLVD STE 545, North Hollywood, CA 91602

Secondary Practice Location 1

Location 116055 Ventura Blvd Ste 715Encino, CA 91436-2610 · Phone (818) 949-8126

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Derik Hossepian Psy.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2062867583
PECOS Enrollment IDI20231018001155
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 Reassignments

2

Medicare enrollment records show Derik Hossepian reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Clinical
4605 LANKERSHIM BLVD # 545
North Hollywood, CA 91602
  • Reassigned Medicare billing, California enrollment
  • 13 clinicians in this Medicare group
Mental Health
99 S ALMADEN BLVD STE 600
San Jose, CA 95113
  • Reassigned Medicare billing, California enrollment
  • 3,139 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 4

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

Social Worker (Clinical)
4605 LANKERSHIM BLVD STE 545
NORTH HOLLYWOOD, CA 91602
Psychologist
4605 LANKERSHIM BLVD STE 545
NORTH HOLLYWOOD, CA 91602
Counselor
4605 LANKERSHIM BLVD STE 545
NORTH HOLLYWOOD, CA 91602
Psychologist (Clinical)
4605 LANKERSHIM BLVD STE 545
NORTH HOLLYWOOD, CA 91602

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 Derik Hossepian's NPI number?

The NPI number for Derik Hossepian is 1477163004. It was assigned to this individual provider in the NPPES registry on August 7, 2020.

Where is Derik Hossepian located?

Derik Hossepian practices at 4605 Lankershim Blvd Ste 545, North Hollywood, CA 91602. The listed phone number is (818) 261-3130.

What is Derik Hossepian's specialty?

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

Is Derik Hossepian enrolled in Medicare?

Yes. Derik Hossepian is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Derik Hossepian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Derik Hossepian reassigns Medicare benefits to 2 organizations: Spencer Scott Psychologist Corp (North Hollywood, CA) and Grow Healthcare Group PC (San Jose, CA). Each 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 Derik Hossepian'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 Derik Hossepian was last updated on February 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.