Quick answers
- Does Chang Sung Shin accept Medicare assignment?
- Yes. Medicare's clinician data says Chang Sung Shin 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 Chang Sung Shin see?
- In 2024, CMS data shows 260 Original Medicare patients and 538 services for Chang Sung Shin. This counts Original Medicare only and measures volume, not quality.
- What is Chang Sung Shin's NPI number?
- 1568922649. 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 Chang Sung Shin, 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 | 260 |
|---|---|
| Services billed to Medicare | 538 |
| Different services or procedures | 13 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)210 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)108 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)58 services
- Critical care, first 30-74 minutes (99291)57 services
- Hospital discharge day management, more than 30 minutes (99239)43 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%
- Diabetes56%
- Chronic kidney disease49%
- Arthritis46%
- Ischemic heart disease46%
Hospitals where Chang Sung Shin works
Medicare's Facility Affiliation Data lists Chang Sung Shin 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.
- Casa Colina HospitalPomona, CA · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 050782
- Montclair Hospital Medical CenterMontclair, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050758
- San Antonio Regional HospitalUpland, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050099
- UCI Health-LakewoodLakewood, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050581
- UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348
Practice locations
Addresses where Chang Sung Shin is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 14857 Roscoe BlvdPanorama City, CA 91402 (818) 667‑6488
- 1798 N Garey AvePomona, CA 91767 (909) 865‑9500
- 3700 S StLakewood, CA 90712 (310) 698‑5452
- 5000 San Bernardino StMontclair, CA 91763 (909) 625‑5411
- 5451 Walnut AveChino, CA 91710 (909) 464‑8600
Group practices
Medicare enrollment lists Chang Sung Shin as a member of these groups (CMS data updated October 2, 2026).
- Lakewood Hospitalist Medical Group Inc25 clinicians in the group
- Gap Post-Acute Care Services15 clinicians in the group
- Inland Physicians Hospitalist Services14 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Panorama City
Clinicians with the same Medicare primary specialty in Panorama City, CA — not a recommendation.
Other clinicians in Lakewood Hospitalist Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2018 (8 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568922649 |
| 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