Quick answers
- Does Zachary A. Koretz accept Medicare assignment?
- Yes. Medicare's clinician data says Zachary A. Koretz 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 Zachary A. Koretz see?
- In 2024, CMS data shows 226 Original Medicare patients and 9,245 services for Zachary A. Koretz. This counts Original Medicare only and measures volume, not quality.
- What is Zachary A. Koretz's NPI number?
- 1487157269. 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 Zachary A. Koretz, 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 | 226 |
|---|---|
| Services billed to Medicare | 9,245 |
| Different services or procedures | 48 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Injection, faricimab-svoa, 0.1 mg (J2777)7,440 services
- Injection, avacincaptad pegol, 0.1 mg (J2782)840 services
- Imaging of retina (92134)213 services
- Extended exam of the back part of the eye with retinal drawing (92201)163 services
- Injection of drug into eye (67028)151 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 cholesterol68%
- High blood pressure64%
- Arthritis46%
- Ischemic heart disease25%
- Depression24%
- Diabetes22%
Practice locations
Addresses where Zachary A. Koretz is enrolled with Medicare (CMS data updated October 2, 2026).
- 1411 S Potomac St, Suite 440Aurora, CO 80012 (720) 443‑2425
- 950 E Harvard Ave, Suite 530Denver, CO 80210 (720) 443‑2425
Group practices
Medicare enrollment lists Zachary A. Koretz as a member of this group (CMS data updated October 2, 2026).
- RSC Aurora, PLLC4 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Aurora
Clinicians with the same Medicare primary specialty in Aurora, CO — not a recommendation.
Other clinicians in RSC Aurora, PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tulane University School Of Medicine |
| 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) | 1487157269 |
| 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