Quick answers
- Does Mercedes Armstrong accept Medicare assignment?
- Yes. Medicare's clinician data says Mercedes Armstrong 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 Mercedes Armstrong see?
- In 2024, CMS data shows 387 Original Medicare patients and 557 services for Mercedes Armstrong. This counts Original Medicare only and measures volume, not quality.
- What is Mercedes Armstrong's NPI number?
- 1497783112. 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 Mercedes Armstrong, 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 | 387 |
|---|---|
| Services billed to Medicare | 557 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)475 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)39 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)26 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%
- Ischemic heart disease67%
- Arthritis45%
- Diabetes34%
- Heart failure29%
Hospitals where Mercedes Armstrong works
Medicare's Facility Affiliation Data lists Mercedes Armstrong 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.
- University of Virginia Medical CenterCharlottesville, VA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 490009
- UVA Health Culpeper Medical CenterCulpeper, VA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 490019
Practice locations
Addresses where Mercedes Armstrong is enrolled with Medicare (CMS data updated October 2, 2026).
- 2955 Ivy Rd, Suite 201Charlottesville, VA 22903 (434) 243‑4520
Group practices
Medicare enrollment lists Mercedes Armstrong as a member of this group (CMS data updated October 2, 2026).
- University of Virginia Physicians Group1,717 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Charlottesville
Clinicians with the same Medicare primary specialty in Charlottesville, VA — not a recommendation.
Other clinicians in University of Virginia Physicians Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1497783112 |
| 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