Quick answers
- Does Gus W. Kefalopoulos accept Medicare assignment?
- Yes. Medicare's clinician data says Gus W. Kefalopoulos 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 Gus W. Kefalopoulos see?
- In 2024, CMS data shows 16 Original Medicare patients and 20 services for Gus W. Kefalopoulos. This counts Original Medicare only and measures volume, not quality.
- What is Gus W. Kefalopoulos's NPI number?
- 1477727352. 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 Gus W. Kefalopoulos, 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 | 16 |
|---|---|
| Services billed to Medicare | 20 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Hospitals where Gus W. Kefalopoulos works
Medicare's Facility Affiliation Data lists Gus W. Kefalopoulos 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.
- Sharp Memorial HospitalSan Diego, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050100
Practice locations
Addresses where Gus W. Kefalopoulos is enrolled with Medicare (CMS data updated October 2, 2026).
- 3626 Ruffin RdSan Diego, CA 92123 (619) 565‑9666
Group practices
Medicare enrollment lists Gus W. Kefalopoulos as a member of this group (CMS data updated October 2, 2026).
- Anesthesia Service Medical Group246 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in San Diego
Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.
Other clinicians in Anesthesia Service Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Utah School Of Medicine |
| Graduation year | 2004 (22 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477727352 |
| 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