Quick answers
- Does Ricardo A. Lopez Diaz accept Medicare assignment?
- Yes. Medicare's clinician data says Ricardo A. Lopez Diaz 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 Ricardo A. Lopez Diaz see?
- In 2024, CMS data shows 815 Original Medicare patients and 1,098 services for Ricardo A. Lopez Diaz. This counts Original Medicare only and measures volume, not quality.
- What is Ricardo A. Lopez Diaz's NPI number?
- 1780117101. 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 Ricardo A. Lopez Diaz, 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 | 815 |
|---|---|
| Services billed to Medicare | 1,098 |
| Different services or procedures | 121 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- X-ray of chest, 1 view (71045)121 services
- X-ray of chest, 2 views (71046)88 services
- X-ray of hip, 2-3 views (73502)73 services
- X-ray of shoulder, minimum of 2 views (73030)67 services
- X-ray of foot, minimum of 3 views (73630)62 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%
- Arthritis65%
- Ischemic heart disease38%
- Diabetes34%
- Chronic kidney disease34%
Hospitals where Ricardo A. Lopez Diaz works
Medicare's Facility Affiliation Data lists Ricardo A. Lopez Diaz 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.
- Hospital Pavia SanturceSan Juan, PR · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 400019
- McKenzie County Healthcare Systems IncWatford City, ND · Critical Access Hospital · Emergency services: listed by Medicare · CCN 351302
- Sanford Medical Center BismarckBismarck, ND · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 350015
Practice locations
Addresses where Ricardo A. Lopez Diaz is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.
- 1462 Calle Profesor Augusto RodriguezSan Juan, PR 00910 (787) 641‑1616
- 1833 E Bismarck Expressway, Sanford Health ChiropracticBismarck, ND 58501 (701) 323‑5222
- 222 N 7th StBismarck, ND 58501 (701) 323‑6000
- 300 N 7th StBismarck, ND 58501 (701) 323‑6000
- 3318 N 14th StBismarck, ND 58503 (701) 323‑8300
Group practices
Medicare enrollment lists Ricardo A. Lopez Diaz as a member of these groups (CMS data updated October 2, 2026).
- Sanford Bismarck556 clinicians in the group
- M and P Radiologos, LLC20 clinicians in the group
- San Pablo Developers Inc4 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
- Interventional Radiologyalso
Other radiologists in San Juan
Clinicians with the same Medicare primary specialty in San Juan, PR — not a recommendation.
Other clinicians in Sanford Bismarck
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1780117101 |
| 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