Quick answers
- Does Eva-Marie B. Chong accept Medicare assignment?
- Yes. Medicare's clinician data says Eva-Marie B. Chong 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 Eva-Marie B. Chong see?
- In 2024, CMS data shows 1,100 Original Medicare patients and 3,060 services for Eva-Marie B. Chong. This counts Original Medicare only and measures volume, not quality.
- What is Eva-Marie B. Chong's NPI number?
- 1700867009. 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 Eva-Marie B. Chong, 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 | 1,100 |
|---|---|
| Services billed to Medicare | 3,060 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Established patient complete exam of visual system (92014)1,088 services
- Imaging of retina (92134)321 services
- Exam of visual field with extended testing (92083)263 services
- Imaging of optic nerve (92133)253 services
- Removal of cataract with insertion of prosthetic lens (66984)252 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 pressure70%
- Arthritis51%
- Ischemic heart disease28%
- Chronic kidney disease28%
- Osteoporosis24%
Practice locations
Addresses where Eva-Marie B. Chong is enrolled with Medicare (CMS data updated October 2, 2026).
- 10250 N 92nd St, Suite 105Scottsdale, AZ 85258 (480) 237‑3799
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Scottsdale
Clinicians with the same Medicare primary specialty in Scottsdale, AZ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1998 (28 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700867009 |
| 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