Sean Xiang Gu, MD, PHD
Hematology (Pathology) Physician · New Haven, CT
Sean Xiang Gu, MD, PHD is a hematology (pathology) physician with a practice address in New Haven, Connecticut, and NPI 1497245930, issued on May 10, 2018. Check the license (Connecticut 69959, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Sean Xiang Gu
- Credential
- MD, PHD
- Primary taxonomy
- Hematology (Pathology) Physician 207ZH0000X
- License number
- 69959 CT
Self-reported in NPPES; status is on the state search - Practice location
- 20 York Street, New Haven, CT 06510
- Phone
- (203) 688-4242
- Enumerated
- May 10, 2018
- Record last updated
- May 16, 2022
- Medicare enrollment
- Enrolled (PECOS I20220801003244); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 2017
- Entity
- Type 1 · individual
Also registered at 20 York Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rachel Aber, M.D.Student in an Organized Health Care Education/Training Program1548011455
- Sandra Abi Fadel, M.D.Diagnostic Radiology Physician1396308995
- Ahmad AbulabanStudent in an Organized Health Care Education/Training Program1306357546
- Zachary Adirim, M.D.Student in an Organized Health Care Education/Training Program1619669934
- Payal AgrawalStudent in an Organized Health Care Education/Training Program1982494860
- Santhosh AgumamidiStudent in an Organized Health Care Education/Training Program1558151449
Verify Sean Xiang Gu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 69959Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 73.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hematology (Pathology) Physician providers in Connecticut
There are 7 hematology (pathology) physician records in Connecticut.
Other hematology (pathology) physician records in Connecticut
- Kamraan GillShelton, CT1194966168
- Andrew KumarNew Haven, CT1487276721
- Suha Mishalani, M.D.Stratford, CT1336343011
- Glenn Segal, D.O.Stratford, CT1518090265
- Bradford Sherburne, M.D.Hartford, CT1659364834
- Richard Torres, MDNew Haven, CT1194714519
Common questions
What is Sean Xiang Gu, MD, PHD's NPI number?
Sean Xiang Gu, MD, PHD's National Provider Identifier (NPI) is 1497245930, issued on May 10, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Sean Xiang Gu, MD, PHD located?
The NPPES record lists a practice address at 20 York Street, New Haven, CT, 06510. Phone: (203) 688-4242. Providers update this record themselves, so call before visiting.
How can I verify Sean Xiang Gu, MD, PHD's license?
NPPES lists Connecticut license number 69959, 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.
What is Sean Xiang Gu, MD, PHD's MIPS final score?
The 2023 MIPS final score is 73.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.