Sun-Joo Jang, MD, PHD
Internal Medicine Physician · New Haven, CT
Sun-Joo Jang, MD, PHD is an internal medicine physician with a practice address in New Haven, Connecticut, and NPI 1659900595, issued on Apr 3, 2020. Check the license (Connecticut 75809, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Sun-Joo Jang
- Credential
- MD, PHD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 75809 CT
Self-reported in NPPES; status is on the state search - Practice location
- 20 York St, New Haven, CT 06510
- Phone
- (781) 888-5542
- Enumerated
- Apr 3, 2020
- Record last updated
- Sep 28, 2023
- Medicare enrollment
- Enrolled (PECOS I20231019002492); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 20 York St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cyrena Abbasi, MDStudent in an Organized Health Care Education/Training Program1609703289
- Ali Abboud, MD, MBAStudent in an Organized Health Care Education/Training Program1942943097
- Basil Abdalla, MDStudent in an Organized Health Care Education/Training Program1154905057
- Jasmina AbdallaStudent in an Organized Health Care Education/Training Program1700638590
- Sarah AbdallahPsychiatry Physician1740800952
- Usama Abdelghany, PHARM DOncology Pharmacist1548827843
Verify Sun-Joo Jang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 75809Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average internal medicine physician in 2024
15 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $139.86
3 payments; by number, the most common kind was food and beverage; the largest payer was Alnylam Pharmaceuticals Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Prospect CT Medical Foundation IncWaterbury, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
329 internal medicine physician records list a practice address in New Haven
They are 329 of the 9,793 NPPES records with a practice address in New Haven, and 2,623 internal medicine physician records in Connecticut.
All 329 in New Haven → All 2,623 in Connecticut → Every provider in New Haven →
Other internal medicine physician records in Connecticut
- Hoda Abdel Salam, M.D.New Britain, CT1144509316
- Gada Abdelhafiz, MDNew London, CT1467649558
- Racha Abi Melhem, MDDerby, CT1902471352
- Gerard Abidor, D.O.Bridgeport, CT1518014539
- Lilyan AbrahamFarmington, CT1447693254
- Richard Abraham, M.D.Canton, CT1023044252
- Odaliz Abreu-Lanfranco, MDNew Haven, CT1538276134
- Kenneth Abriola, MDGlastonbury, CT1083693022
- Florentino Abueg, MDSouthbury, CT1649372558
- Nila Aburto, MDStamford, CT1396325718
Common questions
What is Sun-Joo Jang, MD, PHD's NPI number?
Sun-Joo Jang, MD, PHD's National Provider Identifier (NPI) is 1659900595, issued on Apr 3, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Sun-Joo Jang, MD, PHD located?
The NPPES record lists a practice address at 20 York St, New Haven, CT, 06510. Phone: (781) 888-5542. Providers update this record themselves, so call before visiting.
How can I verify Sun-Joo Jang, MD, PHD's license?
NPPES lists Connecticut license number 75809, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sun-Joo Jang, MD, PHD prescribe under Medicare Part D?
In 2024, Sun-Joo Jang, MD, PHD had 15 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.