Quick answers
- Does Benedict C. Villanueva accept Medicare assignment?
- Yes. Medicare's clinician data says Benedict C. 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 Benedict C. Villanueva see?
- In 2024, CMS data shows 223 Original Medicare patients and 1,181 services for Benedict C. Villanueva. This counts Original Medicare only and measures volume, not quality.
- What is Benedict C. Villanueva's NPI number?
- 1376601690. 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 Benedict C. 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 | 223 |
|---|---|
| Services billed to Medicare | 1,181 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)756 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)186 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)128 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)48 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)29 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%
- Chronic kidney disease60%
- Arthritis54%
- Diabetes53%
- Ischemic heart disease45%
Hospitals where Benedict C. Villanueva works
Medicare's Facility Affiliation Data lists Benedict C. 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.
- Peninsula Medical CenterBurlingame, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050007
- San Ramon Regional Medical CenterSan Ramon, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050689
- Washington HospitalFremont, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050195
Practice locations
Addresses where Benedict C. Villanueva is enrolled with Medicare (CMS data updated October 2, 2026).
- 2557 Mowry Ave, Suite 12Fremont, CA 94538 (510) 793‑3722
Group practices
Medicare enrollment lists Benedict C. Villanueva as a member of this group (CMS data updated October 2, 2026).
- Washington Township Medical Foundation117 clinicians in the group
Specialties
- Infectious Diseaseprimary
- Internal Medicinealso
Other infectious disease doctors in Fremont
Clinicians with the same Medicare primary specialty in Fremont, CA — not a recommendation.
Other clinicians in Washington Township Medical Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1376601690 |
| 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