Quick answers
- Which hospitals does Matthew Y. Siow work at?
- Medicare's official clinician data lists Matthew Y. Siow at 4 hospitals: Grossmont Hospital, Scripps Memorial Hospital - Encinitas, Sharp Coronado Hospital and Healthcare Center and Tri-City Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Matthew Y. Siow see patients?
- Medicare's clinician data lists 2 practice locations, including Coronado, CA and San Diego, CA. Call before your visit to confirm the address.
- What is Matthew Y. Siow's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty, and also Sports Medicine.
- Does Matthew Y. Siow accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew Y. Siow 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 Matthew Y. Siow?
- (619) 435-7282, as listed in official Medicare / NPI Registry data.
- What is Matthew Y. Siow's NPI number?
- 1467948307. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Matthew Y. Siow works
Medicare's Facility Affiliation Data lists Matthew Y. Siow at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Grossmont HospitalLa Mesa, CA · Acute Care Hospital · CCN 050026
- Scripps Memorial Hospital - EncinitasEncinitas, CA · Acute Care Hospital · CCN 050503
- Sharp Coronado Hospital and Healthcare CenterCoronado, CA · Acute Care Hospital · CCN 050234
- Tri-City Medical CenterOceanside, CA · Acute Care Hospital · CCN 050128
Practice locations
Addresses where Matthew Y. Siow is enrolled with Medicare (CMS data updated 2026-10-02).
- 230 Prospect Pl, Suite 230Coronado, CA 92118 (619) 435‑7282
- 5643 Copley Dr, Suite 300San Diego, CA 92111 (858) 455‑9942
Group practices
Medicare enrollment lists Matthew Y. Siow as a member of this group (CMS data updated 2026-10-02).
- Ortho 1 Medical Group18 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
- Sports Medicinealso
Other orthopedic surgeons in Coronado
Clinicians with the same Medicare primary specialty in Coronado, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York University School Of Medicine |
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1467948307 |
| 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