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Emergency Medicine

Patrick Hsu, DO

Works at hospitals in Salinas, CA · San Jose, CA · Fremont, CA · California

Summary

Patrick Hsu, DO (Emergency Medicine) is listed by Medicare at 3 hospitals in Salinas, CA, San Jose, CA and Fremont, CA. NPI 1174011530. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Patrick Hsu, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
8Years since medical school (graduated 2018)
Touro Un College Of Osteopathic Medicine, VallejoMedical school
MaleGender (as listed)
Fremont Emergency Services Scherr LtdGroup practice (+2 more)

Quick answers

Which hospitals does Patrick Hsu work at?
Medicare's official clinician data lists Patrick Hsu at 3 hospitals: Salinas Valley Health Medical Center, Santa Clara Valley Medical Center and Washington Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Patrick Hsu see patients?
Medicare's clinician data lists 4 practice locations, including Fremont, CA, San Jose, CA and Las Vegas, NV. Call before your visit to confirm the address.
What is Patrick Hsu's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Patrick Hsu accept Medicare assignment?
Yes. Medicare's clinician data says Patrick 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 Patrick Hsu?
(510) 797-1111, as listed in official Medicare / NPI Registry data.
What is Patrick Hsu's NPI number?
1174011530. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Patrick Hsu works

Medicare's Facility Affiliation Data lists Patrick Hsu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Patrick Hsu is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Patrick Hsu as a member of these groups (CMS data updated 2026-10-02).

  • Fremont Emergency Services Scherr Ltd133 clinicians in the group
  • Emergency Physicians Associates San Jose PC132 clinicians in the group
  • Emergency Physicians Associates Fremont PC31 clinicians in the group

Specialties

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Fremont

Clinicians with the same Medicare primary specialty in Fremont, CA — not a recommendation.

All emergency medicine doctors in Fremont →

Clinician information

CredentialDO
Medical schoolTouro Un College Of Osteopathic Medicine, Vallejo
Graduation year2018
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1174011530
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians