Quick answers
- Does Calvin J. Ruiz accept Medicare assignment?
- Yes. Medicare's clinician data says Calvin J. Ruiz 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 Calvin J. Ruiz see?
- In 2024, CMS data shows 20 Original Medicare patients and 50 services for Calvin J. Ruiz. This counts Original Medicare only and measures volume, not quality.
- What is Calvin J. Ruiz's NPI number?
- 1780188755. 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 Calvin J. Ruiz, 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 | 20 |
|---|---|
| Services billed to Medicare | 50 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 80 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)17 services
- Hospital discharge day management, 30 minutes or less (99238)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 cholesterol70%
- Arthritis70%
- Chronic kidney disease60%
- Heart failure55%
Hospitals where Calvin J. Ruiz works
Medicare's Facility Affiliation Data lists Calvin J. Ruiz 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.
- Mercy Medical Center ReddingRedding, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050280
- Shasta Regional Medical CenterRedding, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050764
Practice locations
Addresses where Calvin J. Ruiz is enrolled with Medicare (CMS data updated October 2, 2026).
- 1035 Placer StRedding, CA 96001
- 2175 Rosaline AveRedding, CA 96001 (530) 225‑7779
- 2480 Sonoma StRedding, CA 96001 (530) 576‑7405
- 980 Placer StRedding, CA 96001 (530) 246‑5930
Group practices
Medicare enrollment lists Calvin J. Ruiz as a member of these groups (CMS data updated October 2, 2026).
- Dignity Health86 clinicians in the group
- Shasta Community Health Center62 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Redding
Clinicians with the same Medicare primary specialty in Redding, CA — not a recommendation.
Other clinicians in Dignity Health
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) | 1780188755 |
| 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