Quick answers
- Does Manuel Sierra Ascencio accept Medicare assignment?
- Yes. Medicare's clinician data says Manuel Sierra Ascencio 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 Manuel Sierra Ascencio see?
- In 2024, CMS data shows 153 Original Medicare patients and 2,825 services for Manuel Sierra Ascencio. This counts Original Medicare only and measures volume, not quality.
- What is Manuel Sierra Ascencio's NPI number?
- 1093952582. 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 Manuel Sierra Ascencio, 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 | 153 |
|---|---|
| Services billed to Medicare | 2,825 |
| Different services or procedures | 93 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)180 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)144 services
- Blood test, lipids (cholesterol and triglycerides) (80061)122 services
- Hemoglobin a1c level (83036)114 services
- Blood test, thyroid stimulating hormone (tsh) (84443)98 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 cholesterol75%
- High blood pressure67%
- Diabetes33%
- Arthritis33%
- Atrial fibrillation27%
- Ischemic heart disease22%
Practice locations
Addresses where Manuel Sierra Ascencio is enrolled with Medicare (CMS data updated October 2, 2026).
- 2600 Compass RdGlenview, IL 60026
- 4420 76th St NEMarysville, WA 98270 (360) 651‑7490
Group practices
Medicare enrollment lists Manuel Sierra Ascencio as a member of these groups (CMS data updated October 2, 2026).
- Select Rehabilitation, LLC2,046 clinicians in the group
- Select Outpatient Services Inc805 clinicians in the group
- Optum Care Washington PLLC683 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Glenview
Clinicians with the same Medicare primary specialty in Glenview, IL — not a recommendation.
Other clinicians in Select Rehabilitation, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 (27 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) | 1093952582 |
| 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