Quick answers
- Does Mary Wood accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Wood 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 Mary Wood see?
- In 2024, CMS data shows 181 Original Medicare patients and 548 services for Mary Wood. This counts Original Medicare only and measures volume, not quality.
- What is Mary Wood's NPI number?
- 1396830899. 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 Mary Wood, 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 | 181 |
|---|---|
| Services billed to Medicare | 548 |
| Different services or procedures | 24 |
| Participating Medicare provider | Yes |
| Average age of these patients | 84 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)111 services
- Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)104 services
- Destruction of skin growth, 1-14 growths (17110)58 services
- Destruction of precancer skin growth, 1 growth (17000)54 services
- Residence visit for new patient with low level of medical decision making, per day, if using time, at least 30 minutes (99342)45 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%
- Arthritis64%
- Anxiety54%
- Depression52%
- Alzheimer's disease or dementia47%
Practice locations
Addresses where Mary Wood is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Masonic DrElizabethtown, PA 17022 (877) 345‑5300
- 728 Norristown RdLower Gwynedd, PA 19002 (877) 345‑5300
- 913 N Market St, Suite 200Wilmington, DE 19801 (877) 345‑5300
Group practices
Medicare enrollment lists Mary Wood as a member of these groups (CMS data updated October 2, 2026).
- On Site Dermatology LLC19 clinicians in the group
- On Site Dermatology of Pennsylvania PLLC15 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Elizabethtown
Clinicians with the same Medicare primary specialty in Elizabethtown, PA — not a recommendation.
Other clinicians in On Site Dermatology LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2009 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1396830899 |
| 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