Mareena S. Zachariah, MD

Medicare activity in 2024

Official CMS public-use data for Mareena S. Zachariah, 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 35 minutes (99232)206 services
2. Dialysis services, 4 or more physician visits per month (20 years or older) (90960)143 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)133 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)98 services
5. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)75 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%
• Chronic kidney disease75%
• Diabetes70%
• Ischemic heart disease50%
• Heart failure50%

Hospitals where Mareena S. Zachariah works

Medicare's Facility Affiliation Data lists Mareena S. Zachariah 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.

• University Medical CenterLubbock, TX · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 450686

Practice locations

Addresses where Mareena S. Zachariah is enrolled with Medicare (CMS data updated October 2, 2026).

• 3601 4th StLubbock, TX 79430 (806) 743‑7337
• 602 Indiana AveLubbock, TX 79415 (806) 743‑2757

Group practices

Medicare enrollment lists Mareena S. Zachariah as a member of this group (CMS data updated October 2, 2026).

• Texas Tech University Health Sciences Center Lubbock359 clinicians in the group

Specialties

• Nephrologyprimary

Find other Nephrology doctors in Texas →

Other nephrologists in Lubbock

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

• Lekha K. George, MD
• Joel D. Starnes, MD
• Alissar El Chediak, MD
• Leo Yamaguchi, MD
• James T. Rose, MD
• Rebecca Rojas, MD
• Larry A. Warmoth, MD
• Camilo Pena, MD

All nephrologists in Lubbock →

Other clinicians in Texas Tech University Health Sciences Center Lubbock

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

• Joshua A. Reyes, PA
• Edwin O. Onkendi, MD
• Sarah E. Carlisle, NP
• David Hodges, MD
• Max Davis, MD
• Melissa T. Sanford, 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