Quick answers
- Does Karen Xie accept Medicare assignment?
- Yes. Medicare's clinician data says Karen Xie 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 Karen Xie see?
- In 2024, CMS data shows 920 Original Medicare patients and 3,942 services for Karen Xie. This counts Original Medicare only and measures volume, not quality.
- What is Karen Xie's NPI number?
- 1255537445. 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 Karen Xie, 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 | 920 |
|---|---|
| Services billed to Medicare | 3,942 |
| Different services or procedures | 107 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)1,825 services
- Ct scan of abdomen and pelvis with contrast (74177)142 services
- Ct scan of chest without contrast (71250)100 services
- Ct scan of chest with contrast (71260)92 services
- X-ray of chest, 1 view (71045)85 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 cholesterol70%
- Arthritis54%
- Diabetes45%
- Chronic kidney disease39%
- Ischemic heart disease33%
Practice locations
Addresses where Karen Xie is enrolled with Medicare (CMS data updated October 2, 2026).
- 150 W Washington StSan Diego, CA 92103 (619) 295‑9729
- 477 N El Camino Real, Suite A102Encinitas, CA 92024 (760) 452‑7150
Group practices
Medicare enrollment lists Karen Xie as a member of this group (CMS data updated October 2, 2026).
- IHS Radiology Medical Group Inc65 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in San Diego
Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.
Other clinicians in IHS Radiology Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Midwestern University, Chicago College Of Osteopathic Med |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255537445 |
| 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