Gerardo Zambrano, MD

Medicare activity in 2024

Official CMS public-use data for Gerardo Zambrano, 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. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)25 services
2. Anesthesia for x-ray or radiation therapy (01922)23 services
3. Anesthesia for other procedure on large bowel using an endoscope (00811)19 services
4. Anesthesia for procedure to assess heart electrical activity (00537)17 services
5. Insertion of artery tube for blood sampling or infusion through skin (36620)16 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%
• Arthritis57%
• Ischemic heart disease41%
• Diabetes39%
• Atrial fibrillation38%

Hospitals where Gerardo Zambrano works

Medicare's Facility Affiliation Data lists Gerardo Zambrano 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.

• CHRISTUS Good Shepherd Medical CenterLongview, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450032

Practice locations

Addresses where Gerardo Zambrano is enrolled with Medicare (CMS data updated October 2, 2026).

• 620 S Fleishel Ave, CHRISTUS Trinity ClinicTyler, TX 75701 (903) 606‑4900
• 630 S Fleishel AveTyler, TX 75701 (903) 606‑5560
• 700 E Marshall Ave, CHRISTUS Trinity ClinicLongview, TX 75601 (903) 315‑1488
• PO Box, Suite 846098Dallas, TX 75284

Group practices

Medicare enrollment lists Gerardo Zambrano as a member of this group (CMS data updated October 2, 2026).

• CHRISTUS Trinity Clinic Texas1,540 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in Texas →

Other anesthesiologists in Tyler

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

• Kyle A. Kelly, MD
• Simon W. Murphy Jr., MD
• Kathy C. Trahan, MD
• Matthew Hermansen, DO
• Ugne Cerna, MD
• Humza S. Jamil, MD
• Jessica Wilkin, MD
• Chase Culver, MD

All anesthesiologists in Tyler →

Other clinicians in CHRISTUS Trinity Clinic Texas

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

• Robert J. Leach, MD
• Tyson E. Becker, MD
• Herbert J. Flachofsky, CNA
• Jennifer B. Symmank, MD
• Athena Nguyen, MD
• Edward W. Tobey, 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