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DEREK SUSUMU MORIYAMA
NPI 1851747901
Internal Medicine - Hospice and Palliative Medicine in Tustin, CA

Active since May 08, 2016PECOS EnrolledAccepts Medicare Assignment
15000 KENSINGTON PARK DR STE 170, TUSTIN, CA 92782(714) 477-8300(714) 477-8301 Get Directions Write a Review

NPPES record last updated: May 29, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 29, 2026, Sep 16, 2020, Aug 21, 2020 (3 updates tracked since 2020).

About Derek Susumu Moriyama NPPES

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

DEREK SUSUMU MORIYAMA (NPI 1851747901) is an individual hospice and palliative medicine provider in Tustin, California, licensed in California (A168883) and active in the NPI registry since May 2016. He is enrolled in Medicare PECOS, maintains a secondary practice location in Los Angeles, and is a graduate of University Of California, Irvine, California College Of Medicine (2016).

NPPES Registry Identity

NPI1851747901
Entity TypeIndividualMale
Primary Taxonomy207RH0002X
Provider Legal NameDEREK SUSUMU MORIYAMA
Location Address15000 KENSINGTON PARK DR STE 170Tustin, CA 92782-1836
Mailing AddressPo Box 31309Los Angeles, CA 90031-0309 · (323) 442-5100
Phone(714) 477-8300
Fax(714) 477-8301
Sole ProprietorNo
Medical School CMSUniversity Of California, Irvine, California College Of MedicineGraduated 2016
Enumeration DateMay 8, 2016
Last NPPES UpdateMay 29, 20263 updates tracked since enumeration
NPPES CertifiedMay 29, 2026
✔ NPI 1851747901 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hospice and Palliative MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RH0002X
License✔ Licensed in CA · A168883
Definition
An internal medicine physician with special knowledge and skills to prevent and relieve the suffering experienced by patients with life-limiting illnesses. This specialist works with an interdisciplinary hospice or palliative care team to maximize quality of life while addressing physical, psychological, social and spiritual needs of both patient and family throughout the course of the disease, through the dying process, and beyond for the family. This specialist has expertise in the assessment of patients with advanced disease; the relief of distressing symptoms; the coordination of interdisciplinary patient and family-centered care in diverse venues; the use of specialized care systems including hospice; the management of the imminently dying patient; and legal and ethical decision making in end-of-life care.
15000 KENSINGTON PARK DR STE 170, Tustin, CA 92782
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Secondary Practice Location 1

Location 11520 San Pablo St Ste 1000Los Angeles, CA 90033-5312 · Phone (323) 442-5100

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Derek Susumu Moriyama is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7113219874
PECOS Enrollment IDI20200827001458
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 Reassignments

3

Medicare enrollment records show Derek Moriyama reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Hmts, Inc
4.3 mi
Urgent Care
16205 SAND CANYON AVE STE 100
Irvine, CA 92618
  • Reassigned Medicare billing, California enrollment
  • 89 clinicians in this Medicare group
NPI 1326828575 (949) 557-0000
Southern California Permanente Medical Group
9.7 mi
Health Maintenance Organization
441 N LAKEVIEW AVE
Anaheim, CA 92807
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1952333460 (714) 279-4000
Usc Care Medical Group, Inc
33 mi
General Practice
1520 SAN PABLO ST
Los Angeles, CA 90033
  • Reassigned Medicare billing, California enrollment
  • 2,445 clinicians in this Medicare group
NPI 1902846306 (323) 442-5955

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 Derek Moriyama's NPI number?

The NPI number for Derek Moriyama is 1851747901. It was assigned to this individual provider in the NPPES registry on May 8, 2016.

Where is Derek Moriyama located?

Derek Moriyama practices at 15000 Kensington Park Dr Ste 170, Tustin, CA 92782. The listed phone number is (714) 477-8300.

What is Derek Moriyama's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hospice and Palliative Medicine, with taxonomy code 207RH0002X.

Is Derek Moriyama enrolled in Medicare?

Yes. Derek Moriyama is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Derek Moriyama's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Derek Moriyama reassigns Medicare benefits to 3 organizations: Hmts, Inc (Irvine, CA), Southern California Permanente Medical Group (Anaheim, CA) and Usc Care Medical Group, Inc (Los Angeles, CA). Each 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 Derek Moriyama'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 Derek Moriyama was last updated on May 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months 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.