Quick answers
- Does Wellington H. Chang accept Medicare assignment?
- Yes. Medicare's clinician data says Wellington H. Chang 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 Wellington H. Chang see?
- In 2024, CMS data shows 307 Original Medicare patients and 1,117 services for Wellington H. Chang. This counts Original Medicare only and measures volume, not quality.
- What is Wellington H. Chang's NPI number?
- 1174780431. 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 Wellington H. Chang, 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 | 307 |
|---|---|
| Services billed to Medicare | 1,117 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient complete exam of visual system (92014)325 services
- Established patient problem focused exam of visual system (92012)224 services
- Exam of visual field with extended testing (92083)149 services
- Imaging of retina (92134)142 services
- Imaging of optic nerve (92133)97 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 pressure63%
- Arthritis32%
- Diabetes27%
- Ischemic heart disease19%
- Osteoporosis15%
Practice locations
Addresses where Wellington H. Chang is enrolled with Medicare (CMS data updated October 2, 2026).
- 10721 Main St, Suite 1500Fairfax, VA 22030 (703) 951‑3930
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Fairfax
Clinicians with the same Medicare primary specialty in Fairfax, VA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tufts University School Of Medicine |
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1174780431 |
| 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