Quick answers
- Does Sang Yong Ji accept Medicare assignment?
- Yes. Medicare's clinician data says Sang Yong Ji 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 Sang Yong Ji see?
- In 2024, CMS data shows 1,173 Original Medicare patients and 5,170 services for Sang Yong Ji. This counts Original Medicare only and measures volume, not quality.
- What is Sang Yong Ji's NPI number?
- 1538354402. 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 Sang Yong Ji, 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 | 1,173 |
|---|---|
| Services billed to Medicare | 5,170 |
| Different services or procedures | 78 |
| Participating Medicare provider | Yes |
| Average age of these patients | 79 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)655 services
- Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)583 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)504 services
- Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month (99439)473 services
- Evaluation of implantable heart and blood vessel monitoring system, remote up to 30 days (93297)386 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%
- Atrial fibrillation51%
- Arthritis48%
- Heart failure47%
- Chronic kidney disease43%
Hospitals where Sang Yong Ji works
Medicare's Facility Affiliation Data lists Sang Yong Ji 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.
- Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050625
- Providence Little Co of Mary Medical Center San PedroSan Pedro, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 050078
- Providence Little Company of Mary Medical Center TorranceTorrance, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 050353
- Torrance Memorial Medical CenterTorrance, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050351
Practice locations
Addresses where Sang Yong Ji is enrolled with Medicare (CMS data updated October 2, 2026).
- 1360 W 6th St, Suite 315San Pedro, CA 90732 (310) 547‑9922
- 2841 Lomita Blvd, Suite 100Torrance, CA 90505 (310) 257‑0508
- 3330 Lomita BlvdTorrance, CA 90505 (310) 517‑4785
- 625 the City Dr S, Suite 320Orange, CA 92868 (714) 202‑2330
Group practices
Medicare enrollment lists Sang Yong Ji as a member of these groups (CMS data updated October 2, 2026).
- Torrance Health Association Inc299 clinicians in the group
- Southern California Hospitalist Network Medical Group Inc77 clinicians in the group
- Torrance Memorial Medical Center53 clinicians in the group
- Cor Healthcare Medical Associates25 clinicians in the group
Specialties
Find other Cardiac Electrophysiology doctors in California →
Other cardiac electrophysiologists in San Pedro
Clinicians with the same Medicare primary specialty in San Pedro, CA — not a recommendation.
Other clinicians in Torrance Health Association Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1538354402 |
| 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