DR. JOAN LESLIE MENDELSON PH.D.
NPI 1801343504
Psychologist in Palo Alto, CA

Active since September 09, 2016Opted out of Medicare · through Oct 1, 2026
560 OXFORD AVE STE 6B, PALO ALTO, CA 94306(650) 328-6764 Get Directions Write a Review

NPPES record last updated: September 9, 2016. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Joan Leslie Mendelson Ph.d. NPPES

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

DR. JOAN LESLIE MENDELSON PH.D. (NPI 1801343504) is an individual psychologist in Palo Alto, California, licensed in California (PSY11233) and active in the NPI registry since September 2016. She has opted out of Medicare through October 1, 2026 and remains eligible to order and refer.

NPPES Registry Identity

NPI1801343504
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameDR. JOAN LESLIE MENDELSONCredential: PH.D.
Location Address560 OXFORD AVE STE 6BPalo Alto, CA 94306-1139
Mailing Address560 Oxford Ave Ste 6bPalo Alto, CA 94306-1139 · (650) 328-6764
Sole ProprietorYes
Enumeration DateSeptember 9, 2016
NPI 1801343504 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 · PSY11233
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.
560 OXFORD AVE STE 6B, Palo Alto, CA 94306

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. Joan Leslie Mendelson Ph.d. 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 October 1, 2016 through October 1, 2026.

Opt-Out Effective DateOctober 1, 2016
Opt-Out In Effect ThroughOctober 1, 2026Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Other Providers at the Same Location NPPES

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

Psychologist (Clinical)
560 OXFORD AVE STE 6B
PALO ALTO, CA 94306

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 Joan Mendelson's NPI number?

The NPI number for Joan Mendelson is 1801343504. It was assigned to this individual provider in the NPPES registry on September 9, 2016.

Where is Joan Mendelson located?

Joan Mendelson practices at 560 Oxford Ave Ste 6B, Palo Alto, CA 94306. The listed phone number is (650) 328-6764.

What is Joan Mendelson's specialty?

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

Is Joan Mendelson enrolled in Medicare?

No. Joan Mendelson has opted out of Medicare through October 1, 2026. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Joan Mendelson was last updated on September 9, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.