Quick answers
- Does Ian A. Villanueva accept Medicare assignment?
- Yes. Medicare's clinician data says Ian A. 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 Ian A. Villanueva see?
- In 2024, CMS data shows 190 Original Medicare patients and 807 services for Ian A. Villanueva. This counts Original Medicare only and measures volume, not quality.
- What is Ian A. Villanueva's NPI number?
- 1033706429. 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 Ian A. 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 | 190 |
|---|---|
| Services billed to Medicare | 807 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)208 services
- Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)148 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)110 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)79 services
- Urinalysis, manual test (81002)49 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 disease75%
- Diabetes48%
- Arthritis42%
- Ischemic heart disease36%
Hospitals where Ian A. Villanueva works
Medicare's Facility Affiliation Data lists Ian A. 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.
- Centura Health-St Anthony HospitalLakewood, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060015
- Centura Health-St Anthony North Health CampusWestminster, CO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 060104
- Intermountain Health Lutheran HospitalWheat Ridge, CO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 060009
- Middle Park Medical CenterKremmling, CO · Critical Access Hospital · Emergency services: listed by Medicare · CCN 061318
Practice locations
Addresses where Ian A. Villanueva is enrolled with Medicare (CMS data updated October 2, 2026).
- 5265 Vance St, Suite 200Arvada, CO 80002 (303) 232‑3366
Group practices
Medicare enrollment lists Ian A. Villanueva as a member of this group (CMS data updated October 2, 2026).
- Western Nephrology and Metabolic Bone Disease, P.C.33 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Arvada
Clinicians with the same Medicare primary specialty in Arvada, CO — not a recommendation.
Other clinicians in Western Nephrology and Metabolic Bone Disease, P.C.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033706429 |
| 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