Yoon Chang, MD
NPI 1487693958 · Diagnostic Radiology Physician · Upland, CA
Yoon Chang, MD is a Diagnostic Radiology Physician provider in Upland, CA (NPI 1487693958).
Provider details
- NPI number
- 1487693958
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35040781 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
Registry dates
- Enumerated
- 2006-06-06
- Last updated
- 2007-11-20
Frequently asked questions
- What is Yoon Chang's NPI number?
- Yoon Chang's National Provider Identifier (NPI) is 1487693958, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yoon Chang's specialty?
- Yoon Chang is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Yoon Chang located?
- Yoon Chang's practice location on file with NPPES is 999 San Bernardino Rd, Upland, CA 91786-4920.
- What is Yoon Chang's phone number?
- The practice phone number listed in the NPPES registry for Yoon Chang is (909) 985-2811.
- Is Yoon Chang's NPI active?
- Yes — Yoon Chang's NPI (1487693958) is active in the NPPES registry as of the last update on 2007-11-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.