Willie C. Teo Ong, MD

Medicare activity in 2024

Official CMS public-use data for Willie C. Teo Ong, 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)350 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)253 services
3. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)22 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%
• Diabetes75%
• Chronic kidney disease49%
• Arthritis47%
• Ischemic heart disease39%

Hospitals where Willie C. Teo Ong works

Medicare's Facility Affiliation Data lists Willie C. Teo Ong 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.

• Doctors Hospital at RenaissanceEdinburg, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450869
• Valley Baptist Medical Center- BrownsvilleBrownsville, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450028
• Valley Regional Medical CenterBrownsville, TX · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 450662

Practice locations

Addresses where Willie C. Teo Ong is enrolled with Medicare (CMS data updated October 2, 2026).

• 1040 W Jefferson StBrownsville, TX 78520 (956) 698‑5557

Group practices

Medicare enrollment lists Willie C. Teo Ong as a member of this group (CMS data updated October 2, 2026).

• BHS Physicians Network, Inc706 clinicians in the group

Specialties

• Endocrinologyprimary

Find other Endocrinology doctors in Texas →

Other endocrinologists in Texas

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

• Syed Azhar Hassan, MD
• Tombra L. Govina, MD
• Scott M. Carlson, MD
• Sura Alqaisi, MD
• Jawairia Shakil, MD
• Chhay H. Tay, MD
• Kuldip K. Kaul, MD
• Randall J. Urban, MD

All endocrinologists in Texas →

Other clinicians in BHS Physicians Network, Inc

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

• Sovik De Sirkar, MD
• Dennis Rousseau, MD
• Heitor Cabral Frade, MD
• Ahmed O. Saidi, MD
• Anne E. Gunter, MD
• Michael A. Peck, 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