DR. BRIAN ADAM MARUYAMA PH.D.
NPI 1063708451
Psychologist in Merced, CA

Active since June 23, 2011PECOS Enrolled
1168 SENTINEL CT, MERCED, CA 95340(209) 631-6572 Get Directions Write a Review

NPPES record last updated: September 19, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 19, 2022, Aug 25, 2021 (2 updates tracked since 2021).

About Dr. Brian Adam Maruyama Ph.d. NPPES

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

DR. BRIAN ADAM MARUYAMA PH.D. (NPI 1063708451) is an individual psychologist in Merced, California, licensed in California (32647) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1063708451
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameDR. BRIAN ADAM MARUYAMACredential: PH.D.
Location Address1168 SENTINEL CTMerced, CA 95340-0677
Mailing Address1168 Sentinel CtMerced, CA 95340-0677 · (209) 631-6572
Sole ProprietorNo
Enumeration DateJune 23, 2011
Last NPPES UpdateSeptember 19, 20222 updates tracked since enumeration
NPPES CertifiedSeptember 19, 2022
✔ NPI 1063708451 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License✔ Licensed in CA · 32647
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 ListedCounselor · Mental HealthTaxonomy 101YM0800X
1168 SENTINEL CT, Merced, CA 95340

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Brian Adam Maruyama Ph.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Brian Maruyama reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Internal Medicine
7373 WEST LANE
Stockton, CA 95210
  • Reassigned Medicare billing, California enrollment
  • 20,078 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.

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 Brian Maruyama's NPI number?

The NPI number for Brian Maruyama is 1063708451. It was assigned to this individual provider in the NPPES registry on June 23, 2011.

Where is Brian Maruyama located?

Brian Maruyama practices at 1168 Sentinel Ct, Merced, CA 95340. The listed phone number is (209) 631-6572.

What is Brian Maruyama's specialty?

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

Is Brian Maruyama enrolled in Medicare?

Yes. Brian Maruyama is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Brian Maruyama's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Brian Maruyama reassigns Medicare benefits to Permanente Medical Group Inc (Stockton, 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 Brian Maruyama'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 Brian Maruyama was last updated on September 19, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.