Omar H. Gayar, MD

Medicare activity in 2024

Official CMS public-use data for Omar H. Gayar, 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. Ct guidance for insertion of radiation therapy fields (77014)882 services
2. Calculation of radiation therapy dose (77300)244 services
3. Radiation treatment management, 5 treatment sessions (77427)237 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)208 services
5. Design and construction of complex radiation treatment device (77334)166 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%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
• High cholesterol68%
• Arthritis40%
• Diabetes34%
• Ischemic heart disease34%

Hospitals where Omar H. Gayar works

Medicare's Facility Affiliation Data lists Omar H. Gayar 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.

• McLaren Bay RegionBay City, MI · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 230041
• McLaren FlintFlint, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230141
• McLaren Greater LansingLansing, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230167
• McLaren Lapeer RegionLapeer, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230193
• McLaren OaklandPontiac, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230207

Practice locations

Addresses where Omar H. Gayar is enrolled with Medicare (CMS data updated October 2, 2026).

• 4100 Beecher Rd, Suite AFlint, MI 48532 (810) 342‑3800

Group practices

Medicare enrollment lists Omar H. Gayar as a member of this group (CMS data updated October 2, 2026).

• Hesham E Gayar MD PC6 clinicians in the group

Specialties

• Radiation Oncologyprimary

Find other Radiation Oncology doctors in Michigan →

Other radiation oncologists in Flint

Clinicians with the same Medicare primary specialty in Flint, MI — not a recommendation.

• Hani Al-Halabi, MD
• Hesham E. Gayar, MD
• Paul G. Kocheril, MD
• Anjali L. Saripalli, MD
• Tushar Shah, MD

All radiation oncologists in Flint →

Other clinicians in Hesham E Gayar MD PC

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

• Hani Al-Halabi, MD
• Hesham E. Gayar, MD
• Brian K. Yeh, MD
• Brooke L. Spencer, MD
• Aria Kieft, 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