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Hospitalist

Maria Cristina L. Hsu, MD

Works at hospitals in Anaheim, CA · California

Summary

Dr. Maria Cristina L. Hsu, MD is a hospitalist at 3430 E La Palma Ave, Anaheim, CA 92806. Phone: (888) 988-2800. Accepts Medicare assignment. NPI 1497803472. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Hospitalist
  • Address: 3430 E La Palma Ave, Anaheim, CA 92806 · Directions (5 more locations)
  • Phone: (888) 988‑2800
  • Medicare: Accepts Medicare assignment
  • Hospital: Kaiser Foundation Hospital - Orange County - Anaheim
  • Group practice: Southern California Permanente Medical Group
  • Medical school: Albert Einstein College Of Medicine Of Yeshiva University · graduated 1999 (27 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Maria Cristina L. Hsu, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Maria Cristina L. Hsu accept Medicare assignment?
Yes. Medicare's clinician data says Maria Cristina L. Hsu accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Maria Cristina L. Hsu's NPI number?
1497803472. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Maria Cristina L. Hsu works

Medicare's Facility Affiliation Data lists Maria Cristina L. Hsu at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Maria Cristina L. Hsu is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

Group practices

Medicare enrollment lists Maria Cristina L. Hsu as a member of this group (CMS data updated October 2, 2026).

  • Southern California Permanente Medical Group11,293 clinicians in the group

Specialties

Find other Hospitalist doctors in California →

Other hospitalists in Anaheim

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

All hospitalists in Anaheim →

Other clinicians in Southern California Permanente Medical Group

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolAlbert Einstein College Of Medicine Of Yeshiva University
Graduation year1999 (27 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1497803472
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians