Diandra N. Ayala-Peacock, MD

Medicare activity in 2024

Official CMS public-use data for Diandra N. Ayala-Peacock, 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. Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)314 services
2. Calculation of radiation therapy dose (77300)135 services
3. Design and construction of complex radiation treatment device (77334)104 services
4. Radiation treatment management, 5 treatment sessions (77427)86 services
5. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)52 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 cholesterol65%
• Arthritis45%
• Anxiety29%
• Diabetes23%

Hospitals where Diandra N. Ayala-Peacock works

Medicare's Facility Affiliation Data lists Diandra N. Ayala-Peacock 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.

• Duke University HospitalDurham, NC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 340030

Practice locations

Addresses where Diandra N. Ayala-Peacock is enrolled with Medicare (CMS data updated October 2, 2026).

• 20 Duke Medicine CirDurham, NC 27710 (919) 684‑8111
• 40 Duke Medicine CirDurham, NC 27710 (919) 684‑8111

Group practices

Medicare enrollment lists Diandra N. Ayala-Peacock as a member of this group (CMS data updated October 2, 2026).

• Duke Health Integrated Practice, Inc3,185 clinicians in the group

Specialties

• Radiation Oncologyprimary

Find other Radiation Oncology doctors in North Carolina →

Other radiation oncologists in Durham

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

• Matthew J. Boyer, MD
• Christopher G. Willett, MD
• Junzo P. Chino, MD
• Paul P. Koffer, MD
• Esther Yu, MD
• Stacy Wentworth, MD
• Olga G. James, MD
• Parisa Shamsesfandabadi, MD

All radiation oncologists in Durham →

Other clinicians in Duke Health Integrated Practice, Inc

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

• Elizabeth K. Tresohlavy
• Sarah A. Reed
• Elizabeth G. Livingston, MD
• Arturo Suarez, MD
• Abigail S. Haberman
• Charles R. Woodard, 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