Quick answers
- Does Margaret K. Cheung accept Medicare assignment?
- Yes. Medicare's clinician data says Margaret K. Cheung 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 Margaret K. Cheung see?
- In 2024, CMS data shows 229 Original Medicare patients and 1,365 services for Margaret K. Cheung. This counts Original Medicare only and measures volume, not quality.
- What is Margaret K. Cheung's NPI number?
- 1336217637. 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 Margaret K. Cheung, 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 | 229 |
|---|---|
| Services billed to Medicare | 1,365 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient problem focused exam of visual system (92012)330 services
- Established patient complete exam of visual system (92014)231 services
- Imaging of retina (92134)201 services
- Imaging of optic nerve (92133)109 services
- Exam of the internal drainage system of eye (92020)106 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%
- Diabetes55%
- Chronic kidney disease38%
- Arthritis27%
- Ischemic heart disease21%
Hospitals where Margaret K. Cheung works
Medicare's Facility Affiliation Data lists Margaret K. Cheung 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.
- The Queens Medical CenterHonolulu, HI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 120001
Practice locations
Addresses where Margaret K. Cheung is enrolled with Medicare (CMS data updated October 2, 2026).
- 321 N Kuakini St, Suite 303Honolulu, HI 96817 (808) 521‑3535
- 91 -2139 Ft Weaver Rd, 207 Suite 207Ewa Beach, HI 96706 (808) 671‑3535
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Honolulu
Clinicians with the same Medicare primary specialty in Honolulu, HI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tulane University School Of Medicine |
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1336217637 |
| 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