Byron J. Allen, MD

Medicare activity in 2024

Official CMS public-use data for Byron J. Allen, 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.

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)348 services
2. Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)50 services
3. Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)15 services
4. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)14 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%
• Arthritis51%
• Ischemic heart disease50%
• Atrial fibrillation40%
• Diabetes28%

Hospitals where Byron J. Allen works

Medicare's Facility Affiliation Data lists Byron J. Allen 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.

• Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050224
• UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348

Practice locations

Addresses where Byron J. Allen is enrolled with Medicare (CMS data updated October 2, 2026).

• 101 the City Dr SOrange, CA 92868

Group practices

Medicare enrollment lists Byron J. Allen as a member of this group (CMS data updated October 2, 2026).

• UC Regents319 clinicians in the group

Specialties

• Internal Medicineprimary
• Cardiovascular Disease (Cardiology)also

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Orange

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

• Jeffrey G. Dyo, MD
• Ulrike Luderer, MD
• Iqra M. Iqbal, MD
• Sarah E. Stanowicz, MD
• Andrew Sous, DO
• K.a. Manisha Perera, MD
• Ailin Barseghian El-Farra
• Varun Dang, MD

All internal medicine doctors in Orange →

Other clinicians in UC Regents

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

• Ulrike Luderer, MD
• Nishant V. Munugala, MD
• Yung-Chen Pai, PA
• Sheetal B. Desai, MD
• Donald N. Forthal, MD
• Timmy Cheng, MD

Clinician information

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