Derek Susumu Moriyama, - Medicare Internal Medicine in Tustin, CA

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Derek Susumu Moriyama, is a medicare enrolled "Internal Medicine - Hospice And Palliative Medicine" physician in Tustin, California. He went to University Of California, Irvine, California College Of Medicine and graduated in 2016 and has 10 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Hmts Inc and his current practice location is 15000 Kensington Park Dr Ste 170, Tustin, California. You can reach out to his office (for appointments etc.) via phone at (714) 477-8300.

Derek Susumu Moriyama is licensed to practice in California (license number A168883) 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 1851747901.

Contact Information

Derek Susumu Moriyama,
15000 Kensington Park Dr Ste 170,
Tustin, CA 92782-1836
(714) 477-8300
(714) 477-8301

Map and Direction




Physician's Profile

Full NameDerek Susumu Moriyama
GenderMale
SpecialityInternal Medicine
Experience10 Years
Location15000 Kensington Park Dr Ste 170, Tustin, California
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:
  • Derek Susumu Moriyama attended and graduated from University Of California, Irvine, California College Of Medicine in 2016
  NPI Data:
  • NPI Number: 1851747901
  • Provider Enumeration Date: 05/08/2016
  • Last Update Date: 05/29/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 7113219874
  • Enrollment ID: I20200827001458

Medical Identifiers

Medical identifiers for Derek Susumu Moriyama such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1851747901NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0002XInternal Medicine - Hospice And Palliative Medicine A168883 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Providence At Home With Compassus Hospice Care La CountyTorrance, CAHospice

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Hmts Inc1951750413118

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. Derek Susumu Moriyama allows following entities to bill medicare on his behalf.
Entity NameSouthern California Permanente Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1770515280
PECOS PAC ID: 6002729175
Enrollment ID: O20031110000678
Entity NameUsc Care Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1902846306
PECOS PAC ID: 0446157747
Enrollment ID: O20050512000412
Entity NameHmts Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1326828575
PECOS PAC ID: 1951750413
Enrollment ID: O20231208001304

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. Derek Susumu Moriyama 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
Derek Susumu Moriyama,
Po Box 31309,
Los Angeles, CA 90031-0309

Ph: (323) 442-5100		Derek Susumu Moriyama,
15000 Kensington Park Dr Ste 170,
Tustin, CA 92782-1836

Ph: (714) 477-8300

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.