Quick answers
- Does Achilles G. Karagianis accept Medicare assignment?
- Yes. Medicare's clinician data says Achilles G. Karagianis 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 Achilles G. Karagianis see?
- In 2024, CMS data shows 2,457 Original Medicare patients and 3,481 services for Achilles G. Karagianis. This counts Original Medicare only and measures volume, not quality.
- What is Achilles G. Karagianis's NPI number?
- 1407891633. 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 Achilles G. Karagianis, 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 | 2,457 |
|---|---|
| Services billed to Medicare | 3,481 |
| Different services or procedures | 59 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Ct scan head or brain without contrast (70450)1,142 services
- Ct scan of upper spine without contrast (72125)388 services
- Mri scan of brain before and after contrast (70553)318 services
- Mri scan of brain without contrast (70551)226 services
- Mri scan of lower spinal canal without contrast (72148)216 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 cholesterol75%
- Arthritis70%
- Ischemic heart disease34%
- Diabetes31%
- Depression30%
Hospitals where Achilles G. Karagianis works
Medicare's Facility Affiliation Data lists Achilles G. Karagianis 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.
- Northshore University Healthsystem - Evanston HospitalEvanston, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140010
- Silver Cross Hospital and Medical CentersNew Lenox, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140213
- Swedish HospitalChicago, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140114
Practice locations
Addresses where Achilles G. Karagianis is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 12; the Medicare profile lists all.
- 100 Medical PlazaLos Angeles, CA 90095 (310) 301‑6800
- 100 Medical Plaza, Suite 170Los Angeles, CA 90095 (310) 319‑1234
- 1260 15th St, Suite 111Santa Monica, CA 90404 (310) 393‑5153
- 200 Medical PlazaLos Angeles, CA 90095 (310) 301‑6800
- 2650 Ridge Ave, Suite 2218aEvanston, IL 60201 (847) 503‑4222
Group practices
Medicare enrollment lists Achilles G. Karagianis as a member of these groups (CMS data updated October 2, 2026).
- Endeavor Health Medical Group3,350 clinicians in the group
- Central Illinois Radiological Associates Ltd209 clinicians in the group
- UCLA Radiology Medical Group202 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Other clinicians in Endeavor Health Medical Group
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 | 1996 (30 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1407891633 |
| 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