Quick answers
- Does Sung Hyun Lim accept Medicare assignment?
- Yes. Medicare's clinician data says Sung Hyun Lim 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 Sung Hyun Lim see?
- In 2024, CMS data shows 100 Original Medicare patients and 336 services for Sung Hyun Lim. This counts Original Medicare only and measures volume, not quality.
- What is Sung Hyun Lim's NPI number?
- 1629538160. 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 Sung Hyun Lim, 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 | 100 |
|---|---|
| Services billed to Medicare | 336 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)185 services
- Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th (G0316)59 services
- Hospital discharge day management, more than 30 minutes (99239)37 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)36 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%
- Arthritis75%
- Ischemic heart disease64%
- Chronic kidney disease61%
- Heart failure59%
Hospitals where Sung Hyun Lim works
Medicare's Facility Affiliation Data lists Sung Hyun Lim 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.
- Lac/Olive View-Ucla Medical CenterSylmar, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050040
- Ronald Reagan UCLA Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050262
- Santa Monica - UCLA Medical Center & Orthopaedic HospitalSanta Monica, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050112
Practice locations
Addresses where Sung Hyun Lim is enrolled with Medicare (CMS data updated October 2, 2026).
- 2020 Santa Monica Blvd, Suite 210Santa Monica, CA 90404 (310) 458‑2381
- 757 Westwood PlzLos Angeles, CA 90095 (310) 267‑9643
- 757 Westwood Plz, Suite 7501Los Angeles, CA 90095 (310) 267‑9643
Group practices
Medicare enrollment lists Sung Hyun Lim as a member of this group (CMS data updated October 2, 2026).
- The Regents of the University of California1,462 clinicians in the group
Specialties
- Hospitalistprimary
- Internal Medicinealso
- Pediatric Medicinealso
Other hospitalists in Santa Monica
Clinicians with the same Medicare primary specialty in Santa Monica, CA — not a recommendation.
Other clinicians in The Regents of the University of California
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Geffen School Of Medicine |
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629538160 |
| 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