Quick answers
- Does Mary Louise Rahn accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Louise Rahn 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 Louise Rahn see?
- In 2024, CMS data shows 241 Original Medicare patients and 296 services for Mary Louise Rahn. This counts Original Medicare only and measures volume, not quality.
- What is Mary Louise Rahn's NPI number?
- 1699930396. 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 Louise Rahn, 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 | 241 |
|---|---|
| Services billed to Medicare | 296 |
| Different services or procedures | 7 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)196 services
- Hospital discharge day management, 30 minutes or less (99238)70 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)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%
- Ischemic heart disease55%
- Diabetes54%
- Arthritis49%
- Chronic kidney disease47%
Practice locations
Addresses where Mary Louise Rahn is enrolled with Medicare (CMS data updated October 2, 2026).
- 701 W Ave, Suite 202Ocean City, NJ 08226 (609) 465‑4448
Group practices
Medicare enrollment lists Mary Louise Rahn as a member of this group (CMS data updated October 2, 2026).
- Penfield Psychiatry PC26 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Ocean City
Clinicians with the same Medicare primary specialty in Ocean City, NJ — not a recommendation.
Other clinicians in Penfield Psychiatry PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2000 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699930396 |
| 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