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Emergency Medicine

Lauren B. Donnelly, DO

Works at hospitals in Temecula, CA · California

Summary

Dr. Lauren B. Donnelly, DO is an emergency medicine doctor at 31700 Temecula Pkwy, Temecula, CA 92592. Phone: (951) 331-2280. Accepts Medicare assignment. In 2024, Lauren B. Donnelly had 280 Original Medicare patients and 377 services. NPI 1922392901. 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.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 31700 Temecula Pkwy, Temecula, CA 92592 · Directions (1 more location)
  • Phone: (951) 331‑2280
  • Medicare: Accepts Medicare assignment
  • Hospital: Temecula Valley Hospital
  • Group practice: Em Alliance California Apc (+1 more)
  • Medical school: Philadelphia College Of Osteopathic Medicine · graduated 2011 (15 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Lauren B. Donnelly, 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 Lauren B. Donnelly accept Medicare assignment?
Yes. Medicare's clinician data says Lauren B. Donnelly 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 Lauren B. Donnelly see?
In 2024, CMS data shows 280 Original Medicare patients and 377 services for Lauren B. Donnelly. This counts Original Medicare only and measures volume, not quality.
What is Lauren B. Donnelly's NPI number?
1922392901. 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 Lauren B. Donnelly, 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 patients280
Services billed to Medicare377
Different services or procedures23
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)149 services
  2. Emergency department visit with moderate level of medical decision making (99284)101 services
  3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)61 services
  4. Critical care, first 30-74 minutes (99291)18 services
  5. Emergency department visit with low level of medical decision making (99283)16 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%
  • Arthritis54%
  • Chronic kidney disease39%
  • Diabetes36%
  • Ischemic heart disease36%

Hospitals where Lauren B. Donnelly works

Medicare's Facility Affiliation Data lists Lauren B. Donnelly 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.

  • Temecula Valley HospitalTemecula, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050775

Practice locations

Addresses where Lauren B. Donnelly is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Lauren B. Donnelly as a member of these groups (CMS data updated October 2, 2026).

  • Em Alliance California Apc68 clinicians in the group
  • Temecula Valley Emergency Physicians Inc22 clinicians in the group

Specialties

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Temecula

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

All emergency medicine doctors in Temecula →

Other clinicians in Em Alliance California Apc

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

Clinician information

CredentialDO
Medical schoolPhiladelphia College Of Osteopathic Medicine
Graduation year2011 (15 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1922392901
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