Quick answers
- Does Oscar A. Aguirre accept Medicare assignment?
- Yes. Medicare's clinician data says Oscar A. Aguirre 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 Oscar A. Aguirre see?
- In 2024, CMS data shows 129 Original Medicare patients and 954 services for Oscar A. Aguirre. This counts Original Medicare only and measures volume, not quality.
- What is Oscar A. Aguirre's NPI number?
- 1477651719. 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 Oscar A. Aguirre, 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 | 129 |
|---|---|
| Services billed to Medicare | 954 |
| Different services or procedures | 51 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Urinalysis, manual test (81002)167 services
- Pelvic exam (99459)81 services
- Insertion of temporary bladder tube (51701)74 services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)74 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)59 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 cholesterol64%
- Arthritis54%
- High blood pressure42%
- Anxiety29%
- Osteoporosis26%
- Depression17%
Practice locations
Addresses where Oscar A. Aguirre is enrolled with Medicare (CMS data updated October 2, 2026).
- 11953 Lioness Way, Suite 101Parker, CO 80134 (303) 322‑0500
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Colorado
Clinicians with the same Medicare primary specialty in Colorado — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Colorado School Of Medicine, Denver |
| Graduation year | 1993 (33 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) | 1477651719 |
| 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
- 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