Warren Ross Loos, PH.D.

Clinical Psychologist

Warren Ross Loos is a Clinical Psychologist based in Honolulu, HI with over 38 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.

(808) 284-2200Honolulu, HI
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

Patients across HI can see Warren Ross Loos, PH.D. in person in Honolulu or via virtual visit — no travel required. He has been practicing since 2006 — over 38 years. He regularly sees Medicare patients with high cholesterol, arthritis, and hypertension (per CMS claims data).

1 of 50 Psychologist providers in HISee all Psychologist in Honolulu38+ years experienceNPI since 2006

Older · 1398dNPPES updated 2022-07-26 · verify NPI on CMS · Verify license at Hawaii Medical Board

Contact & Location

Practice Location

4300 Waialae Ave Apt B1002, Honolulu, HI 96816-5757

Fax: (888) 668-8527
CMS Clinical Data

How Does This Doctor Compare?

Medicare Patients

19

Unique beneficiaries

Boutique practice

Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.

Patient Condition Panel

What This Doctor Treats Most

Based on Medicare claims data — here's what patients commonly see this doctor for

Based on Medicare data, this doctor primarily manages High Cholesterol, Arthritis, and Hypertension.

High Cholesterol
75%

Elevated cholesterol or triglycerides that increase heart disease risk

Arthritis
75%

Joint inflammation causing pain, swelling, and stiffness

Hypertension
74%

High blood pressure — a leading risk factor for heart disease and stroke

GeneralBehavioralNational avg

Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Career Journey
  1. Board certified · Jul 25, 2022

    Self-reported via NPPES

  2. 38 years in practice

    Senior practitioner

PsychologistBehavioral Health & Social Service Providers

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

Taxonomy: 103TC0700X

Practice Footprint

Mailing address

4348 Waialae Ave # 403, Honolulu, HI 96816-5767

Differs from practice location

Virtual Psychology Care With Warren Ross Loos

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Warren Ross Loos for cholesterol management, arthritis follow-ups, blood pressure monitoring — no travel to Honolulu required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.

Frequently Asked Questions

Common questions about Warren Ross Loos

Dr. Loos is listed as active in the NPI registry with telehealth listed in Honolulu, HI. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (808) 284-2200.

Verified across 3 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Physician Comparator. See Data Methodology.

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Claim Profile

Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.

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