Quick answers
- Does Marie Karen O. Ferrer accept Medicare assignment?
- Yes. Medicare's clinician data says Marie Karen O. Ferrer 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 Marie Karen O. Ferrer see?
- In 2024, CMS data shows 65 Original Medicare patients and 1,286 services for Marie Karen O. Ferrer. This counts Original Medicare only and measures volume, not quality.
- What is Marie Karen O. Ferrer's NPI number?
- 1598793358. 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 Marie Karen O. Ferrer, 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 | 65 |
|---|---|
| Services billed to Medicare | 1,286 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes (97110)646 services
- Therapy procedure using manual technique, each 15 minutes (97140)238 services
- Application of electrical stimulation with therapist present, each 15 minutes (97032)156 services
- Electrical stimulation (unattended), to one or more areas for indication(s) other than wound care, as part of a therapy plan of care (G0283)105 services
- Therapy procedure using functional activities (97530)84 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 cholesterol75%
- Arthritis74%
- High blood pressure69%
- Diabetes34%
- Ischemic heart disease29%
- Anxiety23%
Practice locations
Addresses where Marie Karen O. Ferrer is enrolled with Medicare (CMS data updated October 2, 2026).
- 195 Franklin TpkeMahwah, NJ 07430 (201) 828‑9290
- 60 W Ridgewood AveRidgewood, NJ 07450
- 60 W Ridgewood Ave, Orthosports and Spine Physical TherapRidgewood, NJ 07450 (201) 588‑7820
Group practices
Medicare enrollment lists Marie Karen O. Ferrer as a member of these groups (CMS data updated October 2, 2026).
- Ma Ferrer Physical Therapy LLC2 clinicians in the group
- Mahwah Health Services, LLC2 clinicians in the group
Specialties
Find other clinicians: Physical Therapist in Private Practice, New Jersey →
Other physical therapists in Mahwah
Clinicians with the same Medicare primary specialty in Mahwah, NJ — not a recommendation.
Other clinicians in Ma Ferrer Physical Therapy LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PT |
|---|---|
| Graduation year | 1998 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598793358 |
| 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