DR. MARK R NAAS PSY
NPI 1427156850
Psychologist in Oakland, CA

Active since September 20, 2006
3873 PIEDMONT AVE STE 2, OAKLAND, CA 94611(925) 203-5810 Get Directions Write a Review

NPPES record last updated: March 14, 2024. Verified against the NPPES registry weekly; last sync: September 06, 2026.

About Dr. Mark R Naas Psy NPPES

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

DR. MARK R NAAS PSY (NPI 1427156850) is an individual psychologist in Oakland, California, licensed in California (PSY19156) and active in the NPI registry since September 2006.

NPPES Registry Identity

NPI1427156850
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameDR. MARK R NAASCredential: PSY
Location Address3873 PIEDMONT AVE STE 2Oakland, CA 94611-5367
Mailing Address195 41st Street, P.o. Box 11214Oakland, CA 94611 · (925) 203-5810
Sole ProprietorYes
Enumeration DateSeptember 20, 2006
Last NPPES UpdateMarch 14, 2024
NPPES CertifiedMarch 14, 2024
NPI 1427156850 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 · PSY19156
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.
3873 PIEDMONT AVE STE 2, Oakland, CA 94611

Accepted Insurance

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 Mark Naas's NPI number?

The NPI number for Mark Naas is 1427156850. It was assigned to this individual provider in the NPPES registry on September 20, 2006.

Where is Mark Naas located?

Mark Naas practices at 3873 Piedmont Ave Ste 2, Oakland, CA 94611. The listed phone number is (925) 203-5810.

What is Mark Naas's specialty?

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

What insurance does Mark Naas accept?

Health plans from Providence Health Plan list Mark Naas as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Mark Naas was last updated on March 14, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.