NPPES file of Aug 9, 2026

Derik Hossepian, PSY.D.

Psychologist · North Hollywood, CA

Derik Hossepian, PSY.D. is a psychologist with a practice address in North Hollywood, California, and NPI 1477163004, issued on Aug 7, 2020. Check the license (California 34310, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1477163004
Name
Derik Hossepian
Credential
PSY.D.
Primary taxonomy
Psychologist 103T00000X
License number
34310 CA
Self-reported in NPPES; status is on the state search
Practice location
4605 Lankershim Blvd Ste 545, North Hollywood, CA 91602
Phone
(818) 261-3130
Enumerated
Aug 7, 2020
Record last updated
Feb 11, 2026
Fax
(855) 568-6438
Medicare enrollment
Enrolled (PECOS I20231018001155); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest psychologist records → All 7,304 in California → Look up another NPI →

Also registered at 4605 Lankershim Blvd Ste 545

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nastaran Bayani-Rad, PSYDClinical Psychologist1811321193
  2. Mariko Iwabuchi, PH.D.Psychologist1477072718
  3. Maite Savage SchwartzCounselor1700639317

Verify Derik Hossepian in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 34310    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Spencer Scott Psychologist CorpNorth Hollywood, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Derik Hossepian among 7,304 psychologist records in California

Derik Hossepian, PSY.D. is one of 7,304 psychologist records with a practice address in California. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 80% of them.

  • NPI issued2020 · 80% of these records are older, 17% newer
  • In a Medicare fileYes · 6% of these records are
  • In the CMS Doctors and Clinicians fileYes · 14% of these records are
  • Graduated2021 · median 2005 among the 1,058 with a school on file
  • Record last updated2026 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychologist providers in California

There are 7,304 psychologist records in California.

All 7,304 in California → Every provider in North Hollywood → Psychologist nationwide →

The 8 psychologist records with the nearest ZIP codes

  1. Ying-An ChiNorth Hollywood, CA 916021639787310
  2. Wiyatta Fahnbulleh, PSYDToluca Lake, CA 916021750690327
  3. Mariko Iwabuchi, PH.D.North Hollywood, CA 916021477072718
  4. Julia Markowski, PSYDNorth Hollywood, CA 916021528787603
  5. Nancy Robinson, PHDToluca Lake, CA 916021639268741
  6. Kari SchallNorth Hollywood, CA 916021326778887
  7. Nicole Shoumer, MA, LMFTStudio City, CA 916021972156412
  8. Beatriz BelloNorth Hollywood, CA 916011801311790

Common questions

What is Derik Hossepian, PSY.D.'s NPI number?

Derik Hossepian, PSY.D.'s National Provider Identifier (NPI) is 1477163004, issued on Aug 7, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Derik Hossepian, PSY.D. located?

The NPPES record lists a practice address at 4605 Lankershim Blvd Ste 545, North Hollywood, CA, 91602. Phone: (818) 261-3130. Providers update this record themselves, so call before visiting.

How can I verify Derik Hossepian, PSY.D.'s license?

NPPES lists California license number 34310, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.