Dr Warren Ross Loos, PHD - Medicare Psychologist in Honolulu, HI

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Dr Warren Ross Loos, PHD is a medicare enrolled "Psychologist - Clinical" provider in Honolulu, Hawaii. He graduated from medical school in 1988 and has 36 years of diverse experience with area of expertise as Clinical Psychologist. His current practice location is 4300 Waialae Ave Apt B1002, Honolulu, Hawaii. You can reach out to his office (for appointments etc.) via phone at (808) 284-2200.

Dr Warren Ross Loos is licensed to practice in Hawaii (license number PSY-792) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1548360167.

Contact Information

Dr Warren Ross Loos, PHD
4300 Waialae Ave Apt B1002,
Honolulu, HI 96816-5757
(808) 284-2200
(888) 668-8527

Map and Direction




Healthcare Provider's Profile

Full NameDr Warren Ross Loos
GenderMale
SpecialityClinical Psychologist
Experience36 Years
Location4300 Waialae Ave Apt B1002, Honolulu, Hawaii
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Warren Ross Loos graduated from medical school in 1988
  NPI Data:
  • NPI Number: 1548360167
  • Provider Enumeration Date: 09/24/2006
  • Last Update Date: 07/26/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 4981507720
  • Enrollment ID: I20040217000950

Medical Identifiers

Medical identifiers for Dr Warren Ross Loos such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1548360167NPI-NPPES
232967OtherHIHMSA
54463601MedicaidHI
203822633OtherHITRICARE

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
103TC0700XPsychologist - Clinical PSY-792 (Hawaii)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Warren Ross Loos allows following entities to bill medicare on his behalf.
Entity NameWarren R Loos Phd Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1396908604
PECOS PAC ID: 4183784002
Enrollment ID: O20081124000029

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Warren Ross Loos is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Warren Ross Loos, PHD
4348 Waialae Ave # 403,
Honolulu, HI 96816-5767

Ph: (808) 284-2200		Dr Warren Ross Loos, PHD
4300 Waialae Ave Apt B1002,
Honolulu, HI 96816-5757

Ph: (808) 284-2200

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.