Joseph P. McMahon, MD

Medicare activity in 2024

Official CMS public-use data for Joseph P. McMahon, 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. Emergency department visit with moderate level of medical decision making (99284)215 services
2. Emergency department visit with low level of medical decision making (99283)164 services
3. Emergency department visit with high level of medical decision making (99285)39 services
4. Critical care, first 30-74 minutes (99291)21 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%
• Arthritis59%
• Depression38%
• Ischemic heart disease34%
• Chronic kidney disease34%

Hospitals where Joseph P. McMahon works

Medicare's Facility Affiliation Data lists Joseph P. McMahon 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.

• The Nebraska Methodist HospitalOmaha, NE · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 280040

Practice locations

Addresses where Joseph P. McMahon is enrolled with Medicare (CMS data updated October 2, 2026).

• 8303 Dodge StOmaha, NE 68114 (402) 354‑4540

Group practices

Medicare enrollment lists Joseph P. McMahon as a member of this group (CMS data updated October 2, 2026).

• Nebraska Methodist Hospital136 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in Nebraska →

Other emergency medicine doctors in Omaha

Clinicians with the same Medicare primary specialty in Omaha, NE — not a recommendation.

• Alexander J. Tomesch, MD
• Bradly Zurek, DO
• Katherine E. Merritt, MD
• James Porter, MD
• Thomas R. Perry, DO
• Elizabeth A. Reiche, DO
• William G. Gossman, MD
• Cooper M. Hamilton, DO

All emergency medicine doctors in Omaha →

Other clinicians in Nebraska Methodist Hospital

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

• Frankie K. Smith, MD
• Brent J. Tierney, MD
• Kathryn J. Brand
• Rhonda K. Vance
• Christine P. Hans, MD
• Theresa A. Jizba

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