Quick answers
- Which hospitals does Steven S. Yu work at?
- Medicare's official clinician data lists Steven S. Yu at 3 hospitals: Hoag Memorial Hospital Presbyterian, Memorialcare Orange Coast Medical Center and UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Steven S. Yu see patients?
- Medicare's clinician data lists 5 practice locations, including Fountain Valley, CA, Anaheim, CA and Los Angeles, CA. Call before your visit to confirm the address.
- What is Steven S. Yu's specialty?
- Medicare lists Hematology/Oncology as the primary specialty, and also Internal Medicine.
- Does Steven S. Yu accept Medicare assignment?
- Yes. Medicare's clinician data says Steven S. Yu 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.
- Does Steven S. Yu offer telehealth?
- Medicare's clinician data says Steven S. Yu offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Steven S. Yu?
- (714) 698-0300, as listed in official Medicare / NPI Registry data.
- What is Steven S. Yu's NPI number?
- 1659643682. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Steven S. Yu works
Medicare's Facility Affiliation Data lists Steven S. Yu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · CCN 050224
- Memorialcare Orange Coast Medical CenterFountain Valley, CA · Acute Care Hospital · CCN 050678
- UCI Health-OrangeOrange, CA · Acute Care Hospital · CCN 050348
Practice locations
Addresses where Steven S. Yu is enrolled with Medicare (CMS data updated 2026-10-02).
- 11180 Warner Ave, Suite 351Fountain Valley, CA 92708 (714) 698‑0300
- 1211 W La Palma Ave, Suite 103Anaheim, CA 92801 (714) 999‑1465
- 1245 Wilshire Blvd, Suite 303Los Angeles, CA 90017 (213) 977‑1214
- 23961 Calle De La Magdalena, Suite 501Laguna Hills, CA 92653 (951) 371‑2411
- 3801 Katella Ave, Suite 207Los Alamitos, CA 90720 (714) 698‑0300
Group practices
Medicare enrollment lists Steven S. Yu as a member of this group (CMS data updated 2026-10-02).
- Los Angeles Hematology-Oncology Medical Group50 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Internal Medicinealso
Other hematologist-oncologists in Fountain Valley
Clinicians with the same Medicare primary specialty in Fountain Valley, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical University Of South Carolina College Of Medicine |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1659643682 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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