Quick answers
- Does Mary K. Drennen accept Medicare assignment?
- Yes. Medicare's clinician data says Mary K. Drennen 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 K. Drennen see?
- In 2024, CMS data shows 279 Original Medicare patients and 693 services for Mary K. Drennen. This counts Original Medicare only and measures volume, not quality.
- What is Mary K. Drennen's NPI number?
- 1538103437. 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 K. Drennen, 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 | 279 |
|---|---|
| Services billed to Medicare | 693 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)422 services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)184 services
- Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)42 services
- Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)14 services
- Nursing facility discharge day management, 30 minutes or less (99315)12 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%
- Arthritis66%
- Chronic kidney disease60%
- Ischemic heart disease59%
- Depression56%
Practice locations
Addresses where Mary K. Drennen is enrolled with Medicare (CMS data updated October 2, 2026).
- 1418 New Rd, Suite 1Northfield, NJ 08225
- 20 N County Line RdJackson, NJ 08527 (732) 961‑8524
- 2106 New Rd, Suite F2Linwood, NJ 08221 (609) 699‑5750
- 895 Westfield RdMoorestown, NJ 08057 (856) 386‑7635
Group practices
Medicare enrollment lists Mary K. Drennen as a member of these groups (CMS data updated October 2, 2026).
- 100 Percent Healthcare LLC9 clinicians in the group
- Universal Health Partners LLC4 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Northfield
Clinicians with the same Medicare primary specialty in Northfield, NJ — not a recommendation.
Other clinicians in 100 Percent Healthcare LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 1997 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538103437 |
| 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