Quick answers
- Which hospitals does Markus T. Leong work at?
- Medicare's official clinician data lists Markus T. Leong at 4 hospitals: California Pacific Medical Center - Mission Bernal…, California Pacific Medical Center- Van Ness Campus, California Pacific Medical Center-Davies Campus Hospital and UCSF Health Saint Francis Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Markus T. Leong see patients?
- Medicare's clinician data lists 2 practice locations, including Lakeport, CA and San Francisco, CA. Call before your visit to confirm the address.
- What is Markus T. Leong's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Markus T. Leong accept Medicare assignment?
- Yes. Medicare's clinician data says Markus T. Leong 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 Markus T. Leong?
- (707) 262-5000, as listed in official Medicare / NPI Registry data.
- What is Markus T. Leong's NPI number?
- 1427136050. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Markus T. Leong works
Medicare's Facility Affiliation Data lists Markus T. Leong at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- California Pacific Medical Center - Mission Bernal…San Francisco, CA · Acute Care Hospital · CCN 050055
- California Pacific Medical Center- Van Ness CampusSan Francisco, CA · Acute Care Hospital · CCN 050047
- California Pacific Medical Center-Davies Campus HospitalSan Francisco, CA · Acute Care Hospital · CCN 050008
- UCSF Health Saint Francis HospitalSan Francisco, CA · Acute Care Hospital · CCN 050152
Practice locations
Addresses where Markus T. Leong is enrolled with Medicare (CMS data updated 2026-10-02).
- 5176 Hill Rd ELakeport, CA 95453 (707) 262‑5000
- 900 Hyde StSan Francisco, CA 94109 (415) 353‑6000
Group practices
Medicare enrollment lists Markus T. Leong as a member of these groups (CMS data updated 2026-10-02).
- Cep America - California1,292 clinicians in the group
- San Francisco Emergency Medical Associates75 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Lakeport
Clinicians with the same Medicare primary specialty in Lakeport, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | George Washington University School Of Medicine |
| Graduation year | 2000 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427136050 |
| 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