Quick answers
- Does Marina Y. Duran Castillo accept Medicare assignment?
- Yes. Medicare's clinician data says Marina Y. Duran Castillo accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Marina Y. Duran Castillo see?
- In 2024, CMS data shows 77 Original Medicare patients and 118 services for Marina Y. Duran Castillo. This counts Original Medicare only and measures volume, not quality.
- What is Marina Y. Duran Castillo's NPI number?
- 1649471491. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Marina Y. Duran 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.
| Original Medicare patients | 77 |
|---|---|
| Services billed to Medicare | 118 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Critical care, first 30-74 minutes (99291)72 services
- Initial hospital care with same-day admission and discharge with high level of medical decision making, per day, if using time, at least 85 minutes (99236)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 pressure75%
- High cholesterol75%
- Ischemic heart disease62%
- Heart failure56%
- Diabetes53%
- Arthritis52%
Hospitals where Marina Y. Duran Castillo works
Medicare's Facility Affiliation Data lists Marina Y. Duran 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.
- MetroHealth SystemCleveland, OH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 360059
- Parma Community General HospitalParma, OH · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 360041
Practice locations
Addresses where Marina Y. Duran Castillo is enrolled with Medicare (CMS data updated October 2, 2026).
- 11100 Euclid AveCleveland, OH 44106 (216) 844‑1000
- 12301 Snow RdParma, OH 44130 (216) 957‑0700
- 2500 Metrohealth DrCleveland, OH 44109 (216) 778‑7800
- 2500 Metrohealth Dr, A107Cleveland, OH 44109
- 9200 Treeworth BlvdBrecksville, OH 44141 (216) 957‑9000
Group practices
Medicare enrollment lists Marina Y. Duran Castillo as a member of these groups (CMS data updated October 2, 2026).
- University Hospitals Medical Group Inc2,294 clinicians in the group
- The MetroHealth System1,144 clinicians in the group
Specialties
Other internal medicine doctors in Cleveland
Clinicians with the same Medicare primary specialty in Cleveland, OH — not a recommendation.
Other clinicians in University Hospitals Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649471491 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians