Quick answers
- Does Jonathan Villanueva accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan Villanueva 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 Jonathan Villanueva see?
- In 2024, CMS data shows 69 Original Medicare patients and 72 services for Jonathan Villanueva. This counts Original Medicare only and measures volume, not quality.
- What is Jonathan Villanueva's NPI number?
- 1184183212. 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 Jonathan Villanueva, 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 | 69 |
|---|---|
| Services billed to Medicare | 72 |
| Different services or procedures | 39 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)11 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 pressure74%
- High cholesterol68%
- Arthritis41%
- Chronic kidney disease39%
- Atrial fibrillation30%
- Diabetes29%
Hospitals where Jonathan Villanueva works
Medicare's Facility Affiliation Data lists Jonathan Villanueva 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.
- Alameda HospitalAlameda, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050211
- Highland HospitalOakland, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050320
Practice locations
Addresses where Jonathan Villanueva is enrolled with Medicare (CMS data updated October 2, 2026).
- 1411 E 31st StOakland, CA 94602 (510) 437‑4800
Group practices
Medicare enrollment lists Jonathan Villanueva as a member of this group (CMS data updated October 2, 2026).
- Alameda Health System601 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Oakland
Clinicians with the same Medicare primary specialty in Oakland, CA — not a recommendation.
Other clinicians in Alameda Health System
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Perelman School Of Med At The University Of Pennsylvania |
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1184183212 |
| 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