Erinn R. Ayres, MD

Medicare activity in 2024

Official CMS public-use data for Erinn R. Ayres, 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. Insertion of needle into vein for collection of blood sample (36415)622 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)553 services
3. Blood test, comprehensive group of blood chemicals (80053)422 services
4. Blood test, lipids (cholesterol and triglycerides) (80061)398 services
5. Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)384 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 cholesterol75%
• High blood pressure65%
• Arthritis38%
• Depression23%
• Chronic kidney disease23%
• Diabetes22%

Hospitals where Erinn R. Ayres works

Medicare's Facility Affiliation Data lists Erinn R. Ayres 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.

• Northwest Medical CenterTucson, AZ · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 030085
• Oro Valley HospitalOro Valley, AZ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 030114
• Tucson Medical CenterTucson, AZ · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 030006

Practice locations

Addresses where Erinn R. Ayres is enrolled with Medicare (CMS data updated October 2, 2026).

• 6130 N La Cholla Blvd, Suite 100Tucson, AZ 85741 (520) 742‑4159

Group practices

Medicare enrollment lists Erinn R. Ayres as a member of this group (CMS data updated October 2, 2026).

• Arizona Community Physicians PC161 clinicians in the group

Specialties

• Internal Medicineprimary
• Geriatric Medicinealso

Find other Internal Medicine doctors in Arizona →

Other internal medicine doctors in Tucson

Clinicians with the same Medicare primary specialty in Tucson, AZ — not a recommendation.

• Bernadette E. Quihuis, DO
• Randy J. Horwitz, MD
• Sai Giridhar Gundepalli, MD
• Jordan Morrison-Nozik, DO
• Gustavo Ortega, MD
• William L. Abraham, MD
• Asongu J. Ncho, PA
• Loai F. Azar, MD

All internal medicine doctors in Tucson →

Other clinicians in Arizona Community Physicians PC

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

• John W. Stoughton, MD
• Gustavo Ortega, MD
• Ruth L. Seppala, NP
• Juan P. Galvez, MD
• Diana Bautista, NP
• Dustin G. Morris, 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