Maygen M. Del Castillo, MD

Medicare activity in 2024

Official CMS public-use data for Maygen M. Del Castillo, 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)46 services
2. Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)20 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 disease58%
• Heart failure56%
• Chronic kidney disease52%
• Diabetes50%

Hospitals where Maygen M. Del Castillo works

Medicare's Facility Affiliation Data lists Maygen M. Del Castillo 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.

• Memorial Hermann Memorial City HospitalHouston, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · CCN 450610

Practice locations

Addresses where Maygen M. Del Castillo is enrolled with Medicare (CMS data updated October 2, 2026).

• 1111 Augusta DrHouston, TX 77057 (713) 442‑2400

Group practices

Medicare enrollment lists Maygen M. Del Castillo as a member of this group (CMS data updated October 2, 2026).

• Kelsey-Seybold Medical Group, PLLC957 clinicians in the group

Specialties

• Cardiovascular Disease (Cardiology)primary
• Internal Medicinealso

Find other Cardiovascular Disease (Cardiology) doctors in Texas →

Other cardiologists in Houston

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

• Nils P. Johnson, MD
• Basant Arya, MD
• Raymond F. Stainback, MD
• Shahid Rahman, MD
• Rajeev Grover, MD
• Howard S. Rubin, MD
• Alexander Postalian, MD
• Andres Mesa, MD

All cardiologists in Houston →

Other clinicians in Kelsey-Seybold Medical Group, PLLC

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

• Irma H. Pfister, MD
• Abdulrasul Meghji, MD
• Kamran I. Ahmed, MD
• Padmavathi V. Karri, MD
• Tison L. Hudson, NP
• Sergio Jaramillo, 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