Yong-Sung Chyun, MD
NPI 1417990268 · Internal Medicine Physician · Bristol, CT
Yong-Sung Chyun, MD is a Internal Medicine Physician provider in Bristol, CT (NPI 1417990268).
Provider details
- NPI number
- 1417990268
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 021696 (CT)
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
- 2006-06-13
- Last updated
- 2012-04-06
Frequently asked questions
- What is Yong-Sung Chyun's NPI number?
- Yong-Sung Chyun's National Provider Identifier (NPI) is 1417990268, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yong-Sung Chyun's specialty?
- Yong-Sung Chyun is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Yong-Sung Chyun located?
- Yong-Sung Chyun's practice location on file with NPPES is 1001 Farmington Ave, Bristol, CT 06010-3990.
- What is Yong-Sung Chyun's phone number?
- The practice phone number listed in the NPPES registry for Yong-Sung Chyun is (860) 582-1100.
- Is Yong-Sung Chyun's NPI active?
- Yes — Yong-Sung Chyun's NPI (1417990268) is active in the NPPES registry as of the last update on 2012-04-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.