Quick answers
- Does Jennifer I. Zarkos accept Medicare assignment?
- Yes. Medicare's clinician data says Jennifer I. Zarkos 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 Jennifer I. Zarkos see?
- In 2024, CMS data shows 152 Original Medicare patients and 2,280 services for Jennifer I. Zarkos. This counts Original Medicare only and measures volume, not quality.
- What is Jennifer I. Zarkos's NPI number?
- 1316565310. 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 Jennifer I. Zarkos, 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 | 152 |
|---|---|
| Services billed to Medicare | 2,280 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Therapy procedure using functional activities (97530)879 services
- Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes (97110)719 services
- Training for self-care or home management, each 15 minutes (97535)170 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)128 services
- Therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes (97112)127 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%
- Arthritis72%
- High blood pressure64%
- Ischemic heart disease29%
- Diabetes27%
- Anxiety26%
Practice locations
Addresses where Jennifer I. Zarkos is enrolled with Medicare (CMS data updated October 2, 2026).
- 101 Hodencamp Rd, Suite 100Thousand Oaks, CA 91360 (805) 495‑0516
- 3695 Alamo St, Suite 205Simi Valley, CA 93063 (805) 520‑7990
Group practices
Medicare enrollment lists Jennifer I. Zarkos as a member of this group (CMS data updated October 2, 2026).
- The Hand and Upper Extremity Center Inc7 clinicians in the group
Specialties
Find other clinicians: Occupational Therapist in Private Practice, California →
Other occupational therapists in Thousand Oaks
Clinicians with the same Medicare primary specialty in Thousand Oaks, CA — not a recommendation.
Other clinicians in The Hand and Upper Extremity Center Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OT |
|---|---|
| Graduation year | 2013 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1316565310 |
| 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