Gustavo H. Day, MD

Medicare activity in 2024

Official CMS public-use data for Gustavo H. Day, 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. Injection, dexamethasone sodium phosphate, 1 mg (J1100)1,147 services
2. Injection, ceftriaxone sodium, per 250 mg (J0696)838 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)705 services
4. Injection of drug or substance under skin or into muscle (96372)596 services
5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)531 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%
• Anxiety38%
• Arthritis35%
• Diabetes32%
• Ischemic heart disease21%

Hospitals where Gustavo H. Day works

Medicare's Facility Affiliation Data lists Gustavo H. Day 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.

• Medical City Dallas HospitalDallas, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450647
• Medical City LewisvilleLewisville, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450669
• Medical City PlanoPlano, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 450651

Practice locations

Addresses where Gustavo H. Day is enrolled with Medicare (CMS data updated October 2, 2026).

• 7777 Forest Ln, Suite 416Dallas, TX 75230 (972) 556‑6764

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Texas →

Other internal medicine doctors in Dallas

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

• Vishal Patel, MD
• Timothy F. Malone, MD
• Keval P. Patel, DO
• Sangita Pogge, MD
• Jesheeja Kuniyil, MD
• Mehedi Rehmetullah, MD
• Sharon L. Larkin, MD
• Namitha Govinda, MD

All internal medicine doctors in Dallas →

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