Ahmed Mohyeldin, MD

Medicare activity in 2024

Official CMS public-use data for Ahmed Mohyeldin, 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. Critical care, first 30-74 minutes (99291)50 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)40 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)33 services
4. Computer-assisted radiosurgery application of headframe (61800)26 services
5. Computer-assisted radiosurgery of complex growth of brain, first growth (61798)18 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%
• Arthritis55%
• Stroke or mini-stroke53%
• Diabetes40%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)38%

Hospitals where Ahmed Mohyeldin works

Medicare's Facility Affiliation Data lists Ahmed Mohyeldin 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.

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

Practice locations

Addresses where Ahmed Mohyeldin is enrolled with Medicare (CMS data updated October 2, 2026).

• 101 the City Dr SOrange, CA 92868 (714) 456‑7004

Group practices

Medicare enrollment lists Ahmed Mohyeldin as a member of this group (CMS data updated October 2, 2026).

• Regents of the University of California27 clinicians in the group

Specialties

• Neurosurgeryprimary

Find other Neurosurgery doctors in California →

Other neurosurgeons in Orange

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

• Angie Zhang, MD
• Benjamin R. Uy, MD
• Hansen C. Bow, MD
• Mark E. Linskey, MD
• Frank P. Hsu, MD
• Ichiro Yuki, MD
• Aaron M. Yengo-Kahn, MD
• Michael G. Kim, MD

All neurosurgeons in Orange →

Other clinicians in Regents of the University of California

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

• Angie Zhang, MD
• Benjamin R. Uy, MD
• Michael P. Blasko, PA
• Michael G. Kim, MD
• Kiarash Golshani, MD
• Cassie S. Poole, PA

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