Quick answers
- Does Kathryn N. Silvestris accept Medicare assignment?
- Yes. Medicare's clinician data says Kathryn N. Silvestris 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 Kathryn N. Silvestris see?
- In 2024, CMS data shows 205 Original Medicare patients and 274 services for Kathryn N. Silvestris. This counts Original Medicare only and measures volume, not quality.
- What is Kathryn N. Silvestris's NPI number?
- 1104448539. 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 Kathryn N. Silvestris, 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 | 205 |
|---|---|
| Services billed to Medicare | 274 |
| Different services or procedures | 40 |
| Participating Medicare provider | Yes |
| Average age of these patients | 66 |
Most frequent services
- Emergency department visit with moderate level of medical decision making (99284)76 services
- Emergency department visit with high level of medical decision making (99285)48 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)31 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)16 services
- Emergency department visit with low level of medical decision making (99283)13 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 cholesterol69%
- High blood pressure68%
- Anxiety50%
- Arthritis43%
- Depression40%
- Chronic kidney disease29%
Practice locations
Addresses where Kathryn N. Silvestris is enrolled with Medicare (CMS data updated October 2, 2026).
- 330 Borthwick Ave, Suite 308Portsmouth, NH 03801 (603) 431‑5242
- 5 Washington PlBedford, NH 03110
Group practices
Medicare enrollment lists Kathryn N. Silvestris as a member of this group (CMS data updated October 2, 2026).
- Appledore Medical Group Inc196 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Portsmouth
Clinicians with the same Medicare primary specialty in Portsmouth, NH — not a recommendation.
Other clinicians in Appledore Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2019 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104448539 |
| 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