David F. Chang MD Inc
NPI 1275857088 · Ophthalmology Physician · Los Altos, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David F. Chang MD Inc is a Ophthalmology Physician organization in Los Altos, CA (NPI 1275857088).
Provider details
- NPI number
- 1275857088
- Entity type
- Organization
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- David Chang, President(650) 948-9123
- License
- G45581 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Altos Eye Physicians
Registry dates
- Enumerated
- 2010-03-23
- Last updated
- 2015-12-16
Frequently asked questions
- What is David F. Chang MD Inc's NPI number?
- David F. Chang MD Inc's National Provider Identifier (NPI) is 1275857088, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is David F. Chang MD Inc?
- David F. Chang MD Inc is classified in the NPPES registry as Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is David F. Chang MD Inc located?
- David F. Chang MD Inc's practice location on file with NPPES is 762 Altos Oaks Dr, Los Altos, CA 94024-5434.
- What is David F. Chang MD Inc's phone number?
- The practice phone number listed in the NPPES registry for David F. Chang MD Inc is (650) 948-9123.
- Does David F. Chang MD Inc accept Medicare?
- David F. Chang MD Inc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for David F. Chang MD Inc?
- The authorized official listed on David F. Chang MD Inc's NPPES record is David Chang, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is David F. Chang MD Inc's NPI active?
- Yes — David F. Chang MD Inc's NPI (1275857088) is active in the NPPES registry as of the last update on 2015-12-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.