Zunair Ahmad, MD

Medicare activity in 2024

Official CMS public-use data for Zunair Ahmad, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)342 services
2. Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)236 services
3. Hospital discharge day management, more than 30 minutes (99239)65 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)55 services
5. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)30 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%
• Ischemic heart disease62%
• Heart failure61%
• Chronic kidney disease57%
• Diabetes49%

Hospitals where Zunair Ahmad works

Medicare's Facility Affiliation Data lists Zunair Ahmad 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 St Michael Health SystemTexarkana, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450801

Practice locations

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

• 1635 N Loop WHouston, TX 77008 (713) 867‑2066
• 1635 N Loop W, Suite 155Houston, TX 77008 (713) 867‑2429
• 1635 N Loop W S Tower Fl, Suite 1Houston, TX 77008 (713) 867‑2066
• 1801 N Loop W, Suite 30Houston, TX 77008 (713) 802‑9781
• 2600 Saint Michael DrTexarkana, TX 75503 (903) 614‑1000

Group practices

Medicare enrollment lists Zunair Ahmad as a member of these groups (CMS data updated October 2, 2026).

• Memorial Hermann Medical Group762 clinicians in the group
• North Texas Physician Services, PLLC238 clinicians in the group

Specialties

• Hospitalistprimary
• Family Practicealso

Find other Hospitalist doctors in Texas →

Other hospitalists in Houston

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

• Clayton Okpara, MD
• Jacqueline U. Okere, MD
• Anthony J. Puthumana, MD
• Desh P. Mohan, MD
• Bobby J. Tharayil, MD
• Martina Ogbonna, MD
• Kenneth S. Fomulu, MD
• Syeda Tooba Ali, MD

All hospitalists in Houston →

Other clinicians in Memorial Hermann Medical Group

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

• Clayton Okpara, MD
• Carmen C. Kagha, MD
• Anil K. Chunduri, MD
• Zhihao Dai, MD
• Richard Kim, MD
• Charles Whitehead Iv, 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