Quick answers
- Where does Derek Y. Hsu see patients?
- Medicare's clinician data lists 2 practice locations, including Santa Ana, CA and Laguna Niguel, CA. Call before your visit to confirm the address.
- What is Derek Y. Hsu's specialty?
- Medicare lists Dermatology as the primary specialty.
- Does Derek Y. Hsu accept Medicare assignment?
- Yes. Medicare's clinician data says Derek Y. Hsu accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Derek Y. Hsu?
- (714) 547-5151, as listed in official Medicare / NPI Registry data.
- What is Derek Y. Hsu's NPI number?
- 1477944841. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Derek Y. Hsu is enrolled with Medicare (CMS data updated 2026-10-02).
- 1125 E 17th St, Suite W248Santa Ana, CA 92701 (714) 547‑5151
- 30201 Golden Lantern, Suite BLaguna Niguel, CA 92677 (949) 363‑1788
Group practices
Medicare enrollment lists Derek Y. Hsu as a member of this group (CMS data updated 2026-10-02).
- J Robert West MD Inc138 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Santa Ana
Clinicians with the same Medicare primary specialty in Santa Ana, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northwestern University Feinberg Medical School |
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477944841 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians