Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Pain Management

Irene I. Wu, MD

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

Summary

Dr. Irene I. Wu, MD is a pain management doctor at 757 Westwood Plz, Los Angeles, CA 90095. Phone: (310) 825-9111. Accepts Medicare assignment. In 2024, Irene I. Wu had 326 Original Medicare patients and 1,255 services. NPI 1699964122. 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 Irene I. Wu, 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 Irene I. Wu accept Medicare assignment?
Yes. Medicare's clinician data says Irene I. Wu 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 Irene I. Wu see?
In 2024, CMS data shows 326 Original Medicare patients and 1,255 services for Irene I. Wu. This counts Original Medicare only and measures volume, not quality.
What is Irene I. Wu's NPI number?
1699964122. 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 Irene I. Wu, 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 patients326
Services billed to Medicare1,255
Different services or procedures58
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)331 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)109 services
  3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)86 services
  4. Injection of substance into lower spine canal using imaging guidance (62323)84 services
  5. Online digital evaluation and management service for an established patient for up to 7 days, total time 11-20 minutes (99422)64 services

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%
  • High cholesterol75%
  • Arthritis75%
  • Depression44%
  • Anxiety41%
  • Ischemic heart disease38%

Hospitals where Irene I. Wu works

Medicare's Facility Affiliation Data lists Irene I. Wu 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 Irene I. Wu is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Irene I. Wu as a member of this group (CMS data updated October 2, 2026).

  • Regents of the University of California236 clinicians in the group

Specialties

Find other Pain Management doctors in California →

Other pain management doctors in Los Angeles

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

All pain management doctors in Los Angeles →

Other clinicians in Regents of the University of California

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

Clinician information

CredentialMD
Medical schoolChicago College Of Medicine And Surgery
Graduation year2006 (20 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1699964122
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