Quick answers
- Does Jennifer B. Kosek accept Medicare assignment?
- Yes. Medicare's clinician data says Jennifer B. Kosek 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 B. Kosek see?
- In 2024, CMS data shows 3,640 Original Medicare patients and 21,104 services for Jennifer B. Kosek. This counts Original Medicare only and measures volume, not quality.
- What is Jennifer B. Kosek's NPI number?
- 1215129184. 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 B. Kosek, 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 | 3,640 |
|---|---|
| Services billed to Medicare | 21,104 |
| Different services or procedures | 181 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)8,387 services
- Injection, gadoterate meglumine, 0.1 ml (A9575)6,440 services
- Screening mammography (77067)818 services
- Screening 3d breast mammography (77063)817 services
- X-ray of chest, 1 view (71045)460 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%
- High blood pressure66%
- Arthritis57%
- Depression25%
- Chronic kidney disease25%
- Diabetes24%
Hospitals where Jennifer B. Kosek works
Medicare's Facility Affiliation Data lists Jennifer B. Kosek at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Community Memorial Hospital - VenturaVentura, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050394
- Goleta Valley Cottage HospitalSanta Barbara, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050357
- Santa Barbara Cottage HospitalSanta Barbara, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050396
- Santa Ynez Valley Cottage HospitalSolvang, CA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 051331
- St Johns Regional Medical CenterOxnard, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050082
Practice locations
Addresses where Jennifer B. Kosek is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 10; the Medicare profile lists all.
- 1306 Maricopa HwyOjai, CA 93023 (805) 646‑1401
- 147 N Brent StVentura, CA 93003 (805) 652‑5011
- 1600 N Rose AveOxnard, CA 93030 (805) 988‑2872
- 2050 Viborg RdSolvang, CA 93463 (800) 841‑4236
- 2309 Antonio AveCamarillo, CA 93010 (805) 389‑5655
Group practices
Medicare enrollment lists Jennifer B. Kosek as a member of this group (CMS data updated October 2, 2026).
- California Managed Imaging Medical Group Inc79 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Ojai
Clinicians with the same Medicare primary specialty in Ojai, CA — not a recommendation.
Other clinicians in California Managed Imaging Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1215129184 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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