Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Derek Susumu Moriyama

Individual provider Hospice and Palliative Medicine (Internal Medicine) Physician · NPI 1851747901

Derek Susumu Moriyama is an Internal Medicine in Tustin, California. Graduated from University of California, Irvine, California College of Medicine in 2016, 10 years ago. Practices with Hmts Inc, a 117-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
10
Trained at
University of California, Irvine, California College of Medicine
Licensed in
CA
In the registry since
2016

Practice location Address checks out

15000 Kensington Park Dr Ste 170
Tustin, CA 92782-1836
Phone: (714) 477-8300
Fax: (714) 477-8301
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1520 San Pablo St Ste 1000, Los Angeles, CA 90033-5312 — (323) 442-5100

Specialties & licences

Hospice and Palliative Medicine (Internal Medicine) Physician (primary) Taxonomy 207RH0002X · Licence A168883 (CA)

Record details

NPI number1851747901
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMay 8, 2016
Last updated in NPPESMay 29, 2026
Certification dateMay 29, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPICE/PALLIATIVE CARE
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice Hmts Inc — 117 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount