Ko-Yun Chang, MD, MPH
NPI 1922956390 · Pulmonary Disease Physician · Jacksonville, FL
Ko-Yun Chang, MD, MPH is a Pulmonary Disease Physician provider in Jacksonville, FL (NPI 1922956390).
Provider details
- NPI number
- 1922956390
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MPH
- Sex
- Female
- Sole proprietor
- No
- License
- 1946 (FL)
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
Under 1 yr in 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
- 2026-03-20
- Last updated
- 2026-03-20
- Certified
- 2026-03-20
Frequently asked questions
- What is Ko-Yun Chang's NPI number?
- Ko-Yun Chang's National Provider Identifier (NPI) is 1922956390, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ko-Yun Chang's specialty?
- Ko-Yun Chang is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Ko-Yun Chang located?
- Ko-Yun Chang's practice location on file with NPPES is 655 W 8th St, Jacksonville, FL 32209-6511.
- What is Ko-Yun Chang's phone number?
- The practice phone number listed in the NPPES registry for Ko-Yun Chang is (904) 244-4075.
- Is Ko-Yun Chang's NPI active?
- Yes — Ko-Yun Chang's NPI (1922956390) is active in the NPPES registry as of the last update on 2026-03-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.