HY DIEP
NPI 1053609834
Psychologist in San Jose, CA

Active since July 14, 2011PECOS EnrolledAccepts Medicare Assignment
80.58/100
CMS Quality Rating
2400 MOORPARK AVE, 300, SAN JOSE, CA 95128(408) 975-2730(408) 975-2745 Get Directions Write a Review

NPPES record last updated: December 1, 2017. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Hy Diep NPPES

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

HY DIEP (NPI 1053609834) is an individual psychologist in San Jose, California and active in the NPI registry since July 2011. He is enrolled in Medicare PECOS and is a graduate of Other (2013).

NPPES Registry Identity

NPI1053609834
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameHY DIEP
Location Address2400 MOORPARK AVE, 300San Jose, CA 95128-2631
Mailing Address2400 Moorpark Ave, 300San Jose, CA 95128-2631
Fax(408) 975-2745
Sole ProprietorYes
Medical School CMSOtherGraduated 2013
Enumeration DateJuly 14, 2011
Last NPPES UpdateDecember 1, 2017
✔ NPI 1053609834 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
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 PSY26861 (CA)
2400 MOORPARK AVE, San Jose, CA 95128

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

Hy Diep 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 ID5395057772
PECOS Enrollment IDI20150629001668
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 Hy Diep reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Federally Qualified Health Center (FQHC)
2400 MOORPARK AVE, STE 100, 118, 204, 212, 220
San Jose, CA 95128
  • Reassigned Medicare billing, California enrollment
  • Also billed through NPI 1588721500 (California)
  • 2,460 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

80.58/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality67.43
Promoting Interoperability100
Improvement Activities40
Cost46.5

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.

Pharmacist
2400 MOORPARK AVE
SAN JOSE, CA 95128
Dietitian, Registered
2400 MOORPARK AVE
SAN JOSE, CA 95128
Internal Medicine
2400 MOORPARK AVE, VHC MOORPARK INTERNAL MEDICINE CLINIC
SAN JOSE, CA 95128
Internal Medicine
2400 MOORPARK AVE, VHC MOORPARK INTERNAL MEDICINE CLINIC
SAN JOSE, CA 95128
Psychologist (Clinical)
2400 MOORPARK AVE, SUITE 300
SAN JOSE, CA 95128
Family Medicine
2400 MOORPARK AVE, SUITE #319
SAN JOSE, CA 95128
Counselor (Mental Health)
2400 MOORPARK AVE, 300
SAN JOSE, CA 95128
Case Manager/Care Coordinator
2400 MOORPARK AVE, SUITE #300
SAN JOSE, CA 95128

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 Hy Diep's NPI number?

The NPI number for Hy Diep is 1053609834. It was assigned to this individual provider in the NPPES registry on July 14, 2011.

Where is Hy Diep located?

Hy Diep practices at 2400 Moorpark Ave 300, San Jose, CA 95128. The listed phone number is (408) 975-2730.

What is Hy Diep's specialty?

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

Is Hy Diep enrolled in Medicare?

Yes. Hy Diep 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 organization bills Medicare for Hy Diep's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hy Diep reassigns Medicare benefits to County Of Santa Clara (San Jose, 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 Hy Diep'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 Hy Diep was last updated on December 1, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.