Timothy M. McDonald, MD

Medicare activity in 2024

Official CMS public-use data for Timothy M. McDonald, 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. Pathology examination of tissue using a microscope, intermediate complexity (88305)572 services
2. Special stained specimen slides to examine tissue, each additional procedure (88341)381 services
3. Special stained specimen slides to examine tissue, initial procedure (88342)184 services
4. Pathology examination of tissue using a microscope, moderately high complexity (88307)159 services
5. Microscopic genetic analysis of tumor, using computer-assisted technology (88361)108 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%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)50%
• Arthritis47%
• Ischemic heart disease35%
• Diabetes32%

Hospitals where Timothy M. McDonald works

Medicare's Facility Affiliation Data lists Timothy M. McDonald 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.

• Banner Desert Medical CenterMesa, AZ · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 030065
• Banner Estrella Medical CenterPhoenix, AZ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 030115
• Banner Gateway Medical CenterGilbert, AZ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 030122
• Banner Thunderbird Medical CenterGlendale, AZ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 030089
• Chandler Regional Medical CenterChandler, AZ · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 030036

Practice locations

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

• 1400 S Dobson RdMesa, AZ 85202 (602) 685‑5211
• 3555 S Val Vista DrGilbert, AZ 85297 (602) 685‑5166
• 424 S 56th St, Suite 110Phoenix, AZ 85034 (602) 685‑5166
• 424 S 56th St, Suite 120Phoenix, AZ 85034 (602) 685‑5211

Group practices

Medicare enrollment lists Timothy M. McDonald as a member of these groups (CMS data updated October 2, 2026).

• Pathology Specialist of Arizona, LLP71 clinicians in the group
• Clin-Path Pathology32 clinicians in the group

Specialties

• Pathologyprimary

Find other Pathology doctors in Arizona →

Other pathologists in Mesa

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

• Khalid G. Aboul-Nasr, MD
• Sajit K. Vinayak, MD
• Ashish P. Mogal, MD
• Bryce L. Dursteler, MD
• Osama M. Abdelatif, MD
• Guangming Guo, MD
• Chalengpoj Sthapanachai, MD
• Eugene D. Dulaney, MD

All pathologists in Mesa →

Other clinicians in Pathology Specialist of Arizona, LLP

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

• Richard Eisen, MD
• Khalid G. Aboul-Nasr, MD
• Melissa Myrsiades, MD
• Sajit K. Vinayak, MD
• Qing J. Cao, MD
• Feras Zaiem, 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