Quick answers
- Which hospitals does Mark C. Xu work at?
- Medicare's official clinician data lists Mark C. Xu at 2 hospitals: Washington Hospital and Zuckerberg San Francisco General Hosp & Trauma Ctr. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark C. Xu see patients?
- Medicare's clinician data lists 4 practice locations, including San Francisco, CA and Fremont, CA. Call before your visit to confirm the address.
- What is Mark C. Xu's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Mark C. Xu accept Medicare assignment?
- Yes. Medicare's clinician data says Mark C. Xu 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 Mark C. Xu offer telehealth?
- Medicare's clinician data says Mark C. Xu offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark C. Xu?
- (628) 206-8265, as listed in official Medicare / NPI Registry data.
- What is Mark C. Xu's NPI number?
- 1003699471. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark C. Xu works
Medicare's Facility Affiliation Data lists Mark C. Xu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Washington HospitalFremont, CA · Acute Care Hospital · CCN 050195
- Zuckerberg San Francisco General Hosp & Trauma CtrSan Francisco, CA · Acute Care Hospital · CCN 050228
Practice locations
Addresses where Mark C. Xu is enrolled with Medicare (CMS data updated 2026-10-02).
- 1001 Potrero AveSan Francisco, CA 94110 (628) 206‑8265
- 1600 Divisadero StSan Francisco, CA 94115 (415) 476‑1000
- 38690 Stivers St AFremont, CA 94536 (510) 248‑1040
- 400 Parnassus AveSan Francisco, CA 94143
Group practices
Medicare enrollment lists Mark C. Xu as a member of these groups (CMS data updated 2026-10-02).
- UCSF Medical Group Business Services1,598 clinicians in the group
- University of California SFGH Medical Group587 clinicians in the group
- Washington Township Medical Foundation117 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Manitoba, Faculty Of Medicine |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1003699471 |
| 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