Quick answers
- Where does David F. Chang see patients?
- Medicare's clinician data lists 1 practice location in Los Altos, CA. Call before your visit to confirm the address.
- What is David F. Chang's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does David F. Chang accept Medicare assignment?
- Medicare's clinician data says David F. Chang may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for David F. Chang?
- (650) 948-9123, as listed in official Medicare / NPI Registry data.
- What is David F. Chang's NPI number?
- 1316966138. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where David F. Chang is enrolled with Medicare (CMS data updated 2026-10-02).
- 762 Altos Oaks Dr, Suite 1Los Altos, CA 94024 (650) 948‑9123
Group practices
Medicare enrollment lists David F. Chang as a member of this group (CMS data updated 2026-10-02).
- David F Chang M D Inc2 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Los Altos
Clinicians with the same Medicare primary specialty in Los Altos, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Harvard Medical School |
| Graduation year | 1980 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1316966138 |
| 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 2026-10-02, retrieved 2026-10-29
- 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