Quick answers
- Which hospitals does Sun-Joo Jang work at?
- Medicare's official clinician data lists Sun-Joo Jang at 1 hospital: Waterbury Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sun-Joo Jang see patients?
- Medicare's clinician data lists 1 practice location in Waterbury, CT. Call before your visit to confirm the address.
- What is Sun-Joo Jang's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Hospitalist.
- Does Sun-Joo Jang accept Medicare assignment?
- Medicare's clinician data says Sun-Joo Jang 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 Sun-Joo Jang?
- (203) 573-6263, as listed in official Medicare / NPI Registry data.
- What is Sun-Joo Jang's NPI number?
- 1659900595. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sun-Joo Jang works
Medicare's Facility Affiliation Data lists Sun-Joo Jang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Waterbury HospitalWaterbury, CT · Acute Care Hospital · CCN 070005
Practice locations
Addresses where Sun-Joo Jang is enrolled with Medicare (CMS data updated 2026-10-02).
- 64 Robbins StWaterbury, CT 06708 (203) 573‑6263
Group practices
Medicare enrollment lists Sun-Joo Jang as a member of these groups (CMS data updated 2026-10-02).
- Prospect Ct Medical Foundation Inc282 clinicians in the group
- Uconn Health Community Network Medical Group, Inc.78 clinicians in the group
Specialties
- Internal Medicineprimary
- Hospitalistalso
Other internal medicine doctors in Waterbury
Clinicians with the same Medicare primary specialty in Waterbury, CT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1659900595 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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