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Hospitalist

Shira M. Peress, MD

Works at hospitals in Los Angeles, CA · Santa Monica, CA · West Hills, CA · California

Summary

Dr. Shira M. Peress, MD is a hospitalist at 2020 Santa Monica Blvd, Suite 210, Santa Monica, CA 90404. Phone: (310) 458-2381. Accepts Medicare assignment. In 2024, Shira M. Peress had 12 Original Medicare patients and 18 services. NPI 1003492000. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Shira M. Peress, 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 Shira M. Peress accept Medicare assignment?
Yes. Medicare's clinician data says Shira M. Peress 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.
How many Medicare patients does Shira M. Peress see?
In 2024, CMS data shows 12 Original Medicare patients and 18 services for Shira M. Peress. This counts Original Medicare only and measures volume, not quality.
What is Shira M. Peress's NPI number?
1003492000. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Shira M. Peress, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients12
Services billed to Medicare18
Different services or procedures6
Participating Medicare providerYes
Average age of these patients78

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%

Hospitals where Shira M. Peress works

Medicare's Facility Affiliation Data lists Shira M. Peress 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 Shira M. Peress is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Shira M. Peress as a member of this group (CMS data updated October 2, 2026).

  • The Regents of the University of California1,462 clinicians in the group

Specialties

Find other Hospitalist doctors in California →

Other hospitalists in Santa Monica

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

All hospitalists in Santa Monica →

Other clinicians in The Regents of the University of California

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

Clinician information

CredentialMD
Graduation year2020 (6 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1003492000
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. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians