Quick answers
- Does Khristina S. Caldarelli accept Medicare assignment?
- Yes. Medicare's clinician data says Khristina S. Caldarelli 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 Khristina S. Caldarelli see?
- In 2024, CMS data shows 478 Original Medicare patients and 18,161 services for Khristina S. Caldarelli. This counts Original Medicare only and measures volume, not quality.
- What is Khristina S. Caldarelli's NPI number?
- 1811622301. 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 Khristina S. Caldarelli, 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 | 478 |
|---|---|
| Services billed to Medicare | 18,161 |
| Different services or procedures | 60 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Hyaluronan or derivative, durolane, for intra-articular injection, 1 mg (J7318)9,720 services
- Injection, triamcinolone acetonide, preservative-free, extended-release, microsphere formulation, 1 mg (J3304)3,424 services
- Injection, gadolinium-based magnetic resonance contrast agent, not otherwise specified (nos), per ml (A9579)550 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)502 services
- Aspiration and/or injection of fluid from large joint (20610)383 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%
- Arthritis75%
- High blood pressure67%
- Ischemic heart disease25%
- Diabetes24%
- Anxiety23%
Hospitals where Khristina S. Caldarelli works
Medicare's Facility Affiliation Data lists Khristina S. Caldarelli 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.
- Adventist Health Simi ValleySimi Valley, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050236
Practice locations
Addresses where Khristina S. Caldarelli is enrolled with Medicare (CMS data updated October 2, 2026).
- 137 E Thousand Oaks BlvdThousand Oaks, CA 91360 (805) 379‑4574
- 2525 Erringer RdSimi Valley, CA 93065 (805) 527‑1404
- 3525 Loma Vista RdVentura, CA 93003
Group practices
Medicare enrollment lists Khristina S. Caldarelli as a member of this group (CMS data updated October 2, 2026).
- Ventura Orthopedics Medical Group Inc72 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Thousand Oaks
Clinicians with the same Medicare primary specialty in Thousand Oaks, CA — not a recommendation.
Other clinicians in Ventura Orthopedics Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811622301 |
| 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