Maria R. Castro, MD

Medicare activity in 2024

Official CMS public-use data for Maria R. Castro, 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)52 services
2. Fine needle aspiration biopsy using ultrasound guidance, first growth (10005)38 services
3. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)26 services
4. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)15 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)13 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 pressure65%
• High cholesterol65%
• Arthritis40%
• Diabetes28%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)23%
• Osteoporosis22%

Hospitals where Maria R. Castro works

Medicare's Facility Affiliation Data lists Maria R. Castro 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.

• Mayo Clinic Hospital RochesterRochester, MN · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 240010

Practice locations

Addresses where Maria R. Castro is enrolled with Medicare (CMS data updated October 2, 2026).

• 200 1st St SWRochester, MN 55905 (507) 284‑2511

Group practices

Medicare enrollment lists Maria R. Castro as a member of this group (CMS data updated October 2, 2026).

• Mayo Clinic4,956 clinicians in the group

Specialties

• Endocrinologyprimary

Find other Endocrinology doctors in Minnesota →

Other endocrinologists in Rochester

Clinicians with the same Medicare primary specialty in Rochester, MN — not a recommendation.

• Kenzie Lee, MD
• Ashley M. Jancuska, MD
• Hossein Gharib, MD
• Marius N. Stan, MD
• Adrian Vella, MD
• David Toro Tobon, MD
• Richard C. Lindsey
• Mercedes Martinez Gil, MD

All endocrinologists in Rochester →

Other clinicians in Mayo Clinic

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

• Kambiz Kalantari, MD
• Taylor Boyd, MD
• Robert F. Rea, MD
• Dang-Huy Do, MD
• Nicholas R. Hable, MD
• Kenny Y. Wang, 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