Jenny Ying Xin Sun, M.D.
Internal Medicine Physician · Quincy, MA
Jenny Ying Xin Sun, M.D. is an internal medicine physician with a practice address in Quincy, Massachusetts, and NPI 1902035280, issued on Jul 8, 2009. Check the license (Massachusetts 230202, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Jenny Ying Xin Sun
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 230202 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1250 Hancock St, Quincy, MA 02169
- Phone
- (617) 774-0840
- Enumerated
- Jul 8, 2009
- Record last updated
- Nov 18, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (617) 774-0882
- Medicare enrollment
- Enrolled (PECOS I20130206000012); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2003
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 1250 Hancock St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jenny Ying Xin Sun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 230202Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
8% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,928 Medicare Part D claims for 390 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 21 claims were for opioids.
Most prescribed
- Atorvastatin Calcium271 claims
- Levothyroxine Sodium165 claims
- Amlodipine Besylate163 claims
- Lisinopril103 claims
- Losartan Potassium93 claims
- Metoprolol Succinate89 claims
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.
Bills Medicare through 2 group practices
- Atrius Health IncDedham, MA
- Mass General Brigham Community Physicians IncWestwood, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jenny Ying Xin Sun among 6,825 internal medicine physician records in Massachusetts
Jenny Ying Xin Sun, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2003 · median 2004 among the 4,103 with a school on file
- Record last updated2013 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
40 internal medicine physician records list a practice address in Quincy
They are 40 of the 2,716 NPPES records with a practice address in Quincy, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Quincy → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mirza Baig, MDQuincy, MA 021691780683276
- Nasir Bhatti, MDQuincy, MA 021691326012576
- Nancy Drew, M.D.Quincy, MA 021691285635979
- Alicja Gupta, M.D.Quincy, MA 021691295731032
- Simon Ho, M.D.Quincy, MA 021691780644534
- Nils Hoernle, M.D.Quincy, MA 021691568463990
- Trang Le, M.D.Quincy, MA 021691427047828
- Suo Lee, MDQuincy, MA 021691457340671
Common questions
What is Jenny Ying Xin Sun, M.D.'s NPI number?
Jenny Ying Xin Sun, M.D.'s National Provider Identifier (NPI) is 1902035280, issued on Jul 8, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Jenny Ying Xin Sun, M.D. located?
The NPPES record lists a practice address at 1250 Hancock St, Quincy, MA, 02169. Phone: (617) 774-0840. Providers update this record themselves, so call before visiting.
How can I verify Jenny Ying Xin Sun, M.D.'s license?
NPPES lists Massachusetts license number 230202, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jenny Ying Xin Sun, M.D. prescribe under Medicare Part D?
In 2024, Jenny Ying Xin Sun, M.D. had 2,928 Medicare Part D claims for 390 beneficiaries; 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.