Sean O Mahony, MD

Medicare activity in 2024

Official CMS public-use data for Sean O Mahony, 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)83 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)70 services
3. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)21 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)17 services
5. Telephone medical discussion with physician, 11-20 minutes (99442)14 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 cholesterol68%
• Arthritis65%
• Anxiety57%
• Ischemic heart disease52%
• Depression51%

Hospitals where Sean O Mahony works

Medicare's Facility Affiliation Data lists Sean O Mahony 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.

• UTMB Health League City Campus HospitalLeague City, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · CCN 450018

Practice locations

Addresses where Sean O Mahony is enrolled with Medicare (CMS data updated October 2, 2026).

• 400 Harborside DrGalveston, TX 77555 (409) 772‑2222

Group practices

Medicare enrollment lists Sean O Mahony as a member of this group (CMS data updated October 2, 2026).

• UTMB Faculty Group Practice1,101 clinicians in the group

Specialties

• Hospice/Palliative Careprimary

Find other Hospice/Palliative Care doctors in Texas →

Other palliative care doctors in Texas

Clinicians with the same Medicare primary specialty in Texas — not a recommendation.

• Melissa C. Andrade, MD
• Brianna Probasco, MD
• Channon T. Hudgins, MD
• Rejina Fahhoum
• Gustavo S. Mastroleo, MD
• Shawnta .. Pittman-Hobbs, MD
• Ann Nguyen, MD
• Shiv K. Sharma, MD

All palliative care doctors in Texas →

Other clinicians in UTMB Faculty Group Practice

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

• Cohashous G. McAfee
• Trudy H. Chang, NP
• Mohamed Soliman, MD
• Joseph D. Nagan, DO
• Chanel J. Perkins, DPM
• Rhonda Sears, NP

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