Quick answers
- Does Ellen Koo accept Medicare assignment?
- Yes. Medicare's clinician data says Ellen Koo 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 Ellen Koo see?
- In 2024, CMS data shows 875 Original Medicare patients and 2,542 services for Ellen Koo. This counts Original Medicare only and measures volume, not quality.
- What is Ellen Koo's NPI number?
- 1528220878. 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 Ellen Koo, 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 | 875 |
|---|---|
| Services billed to Medicare | 2,542 |
| Different services or procedures | 72 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Removal of cataract with insertion of prosthetic lens (66984)417 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)347 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)332 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)199 services
- Photography of content of eyes (92285)176 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 cholesterol75%
- High blood pressure72%
- Arthritis48%
- Ischemic heart disease33%
- Anxiety26%
- Diabetes25%
Practice locations
Addresses where Ellen Koo is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 44; the Medicare profile lists all.
- 1400 NW 12th AveMiami, FL 33136
- 1400 NW 12th Ave 1st FlMiami, FL 33136
- 1400 NW 12th Ave 1st Flr, Umhc Uhealth TowerMiami, FL 33136
- 1400 NW 12th Ave 1st Flr Gi Ctr, Umhc Uhealth TowerMiami, FL 33136 (305) 243‑4598
- 1400 NW 12th Ave 5th Flr Sicu, Umhc Uhealth TowerMiami, FL 33136 (305) 355‑5241
Group practices
Medicare enrollment lists Ellen Koo as a member of this group (CMS data updated October 2, 2026).
- University of Miami2,377 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Miami
Clinicians with the same Medicare primary specialty in Miami, FL — not a recommendation.
Other clinicians in University of Miami
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Eastern Virginia Medical School |
| Graduation year | 2008 (18 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1528220878 |
| 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
- 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