DR. DANIEL RYU
NPI 1649777491
Psychologist in Palo Alto, CA

Active since April 09, 2018Opted out of Medicare · through Jun 11, 2027
3801 MIRANDA AVE, PALO ALTO, CA 94304(650) 493-5000 Get Directions Write a Review

NPPES record last updated: August 30, 2024. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Oct 2, 2020, Apr 9, 2018 (2 updates tracked since 2018).

About Dr. Daniel Ryu NPPES

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

DR. DANIEL RYU (NPI 1649777491) is an individual psychologist in Palo Alto, California and active in the NPI registry since April 2018. He has opted out of Medicare through June 11, 2027.

NPPES Registry Identity

NPI1649777491
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameDR. DANIEL RYU
Location Address3801 MIRANDA AVEPalo Alto, CA 94304-1207
Mailing Address2443 Fillmore St # 380-5173San Francisco, CA 94115-1814
Sole ProprietorNo
Enumeration DateApril 9, 2018
Last NPPES UpdateAugust 30, 20242 updates tracked since enumeration
NPPES CertifiedAugust 30, 2024
NPI 1649777491 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

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.
3801 MIRANDA AVE, Palo Alto, CA 94304

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Opted out of Medicare

Dr. Daniel Ryu has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from June 11, 2025 through June 11, 2027.

Opt-Out Effective DateJune 11, 2025
Opt-Out In Effect ThroughJune 11, 2027Opt-out affidavits renew automatically every two years unless cancelled

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
3801 MIRANDA AVE
PALO ALTO, CA 94304
Psychologist (Clinical)
3801 MIRANDA AVE
PALO ALTO, CA 94304
Pharmacist
3801 MIRANDA AVE
PALO ALTO, CA 94304
Registered Nurse
3801 MIRANDA AVE
PALO ALTO, CA 94304
Internal Medicine
3801 MIRANDA AVE, VA PALO ALTO HEALTH CARE SYSTEM (111STC)
PALO ALTO, CA 94304
Obstetrics & Gynecology
3801 MIRANDA AVE, #112
PALO ALTO, CA 94304
Occupational Therapist
3801 MIRANDA AVE, PMRS (117)
PALO ALTO, CA 94304
Social Worker (Clinical)
3801 MIRANDA AVE, VAPAHCS SOCIAL WORK SERVICE, 122 PA
PALO ALTO, CA 94304

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 Daniel Ryu's NPI number?

The NPI number for Daniel Ryu is 1649777491. It was assigned to this individual provider in the NPPES registry on April 9, 2018.

Where is Daniel Ryu located?

Daniel Ryu practices at 3801 Miranda Ave, Palo Alto, CA 94304. The listed phone number is (650) 493-5000.

What is Daniel Ryu's specialty?

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

Is Daniel Ryu enrolled in Medicare?

No. Daniel Ryu has opted out of Medicare through June 11, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

When was this NPI record last updated?

The NPPES record for Daniel Ryu was last updated on August 30, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.