Marcus Amiel A. Ynalvez, MD

Medicare activity in 2024

Official CMS public-use data for Marcus Amiel A. Ynalvez, 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)20 services
2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)16 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)12 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 cholesterol69%
• Arthritis46%
• Ischemic heart disease38%
• Chronic kidney disease38%
• Diabetes35%

Hospitals where Marcus Amiel A. Ynalvez works

Medicare's Facility Affiliation Data lists Marcus Amiel A. Ynalvez 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 Marcus Amiel A. Ynalvez is enrolled with Medicare (CMS data updated October 2, 2026).

• 200 Blossom StWebster, TX 77598 (832) 632‑6500
• 400 Harborside Dr, Suite 107Galveston, TX 77555 (409) 747‑1883

Group practices

Medicare enrollment lists Marcus Amiel A. Ynalvez as a member of this group (CMS data updated October 2, 2026).

• UTMB Faculty Group Practice1,101 clinicians in the group

Specialties

• Hospitalistprimary
• Internal Medicinealso

Find other Hospitalist doctors in Texas →

Other hospitalists in Webster

Clinicians with the same Medicare primary specialty in Webster, TX — not a recommendation.

• Dangtue H. Nguyen, MD
• Arkoon Ali, DO
• Thanh N. Pham, MD
• Pelin A. Michna, MD
• Lucia Soca Gallego, DO
• Scott O. Conoly, MD
• Maria Zahid Yusuf, MD
• Jiries Dahu, MD

All hospitalists in Webster →

Other clinicians in UTMB Faculty Group Practice

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

• Elizabeth Thomas, NP
• Charles Hughes, MD
• Katye R. Pogue, NP
• Crayton R. Strouse, NP
• Neda S. Shaghaghi, DO
• Laura J. Wu, 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