Marguerite M. Yao, MD

Medicare activity in 2024

Official CMS public-use data for Marguerite M. Yao, 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)235 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)161 services
3. Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)149 services
4. Blood test, lipids (cholesterol and triglycerides) (80061)121 services
5. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)104 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 cholesterol66%
• High blood pressure45%
• Arthritis36%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)19%
• Anxiety17%
• Osteoporosis15%

Hospitals where Marguerite M. Yao works

Medicare's Facility Affiliation Data lists Marguerite M. Yao 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.

• Rex HospitalRaleigh, NC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 340114
• UNC HospitalsChapel Hill, NC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 340061

Practice locations

Addresses where Marguerite M. Yao is enrolled with Medicare (CMS data updated October 2, 2026).

• 940 Martin Luther King Jr BlvdChapel Hill, NC 27514 (919) 942‑5123

Group practices

Medicare enrollment lists Marguerite M. Yao as a member of this group (CMS data updated October 2, 2026).

• UNC Physicians Network LLC998 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in North Carolina →

Other internal medicine doctors in Chapel Hill

Clinicians with the same Medicare primary specialty in Chapel Hill, NC — not a recommendation.

• Anna L. Rosengren-Hovee, MD
• Emily K. Sturkie, MD
• Paul R. Chelminski, MD
• Rosanne G. Tiller, MD
• Regina K. McPherson, MD
• Michael C. Adams, MD
• Elizabeth A. Stern, MD
• Amy B. Weil, MD

All internal medicine doctors in Chapel Hill →

Other clinicians in UNC Physicians Network LLC

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

• Keiva S. Sandlin
• Nzeadibenma Uzochukwu, MD
• Lu Qu
• Collin D. Smith
• Sakine Ozyurt, MD
• Candace G. Whitaker

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