Justine Ryu, M.D.
Hematology & Oncology Physician · Orange, CT
Justine Ryu, M.D. is a hematology & oncology physician with a practice address in Orange, Connecticut, and NPI 1881058899, issued on Apr 6, 2016. Check the license (Connecticut 75447, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Justine Ryu
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 75447 CT
267294 MA
Self-reported in NPPES; status is on the state search - Practice location
- 240 Indian River RD, Orange, CT 06477
- Phone
- (203) 795-1664
- Enumerated
- Apr 6, 2016
- Record last updated
- Aug 14, 2023
- Medicare enrollment
- Enrolled (PECOS I20231013001830); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 198 in Connecticut → Look up another NPI →
Also registered at 240 Indian River RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Andrew Carlson, M.D.Pediatrics Physician1811006802
- Weverton DepaulaOptician1083022339
- Lauren Evanko, PHARMDPharmacist1649051707
- Murielle Exantus, NPAdult Health Nurse Practitioner1679070387
- Nasiha FahmiInternal Medicine Physician1629113980
Verify Justine Ryu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 75447Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
81 Medicare Part D claims for 20 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 62% of claims.
Most prescribed
- Eliquis36 claims
- Warfarin Sodium19 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.
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).
Justine Ryu among 198 hematology & oncology physician records in Connecticut
Justine Ryu, M.D. is one of 198 hematology & oncology physician records with a practice address in Connecticut. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 85% of them.
- NPI issued2016 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2016 · median 2003 among the 139 with a school on file
- Record last updated2023 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Connecticut
There are 198 hematology & oncology physician records in Connecticut.
All 198 in Connecticut → Every provider in Orange → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Johanna Lasala, MDOrange, CT 064771932148848
- Kelsey Martin, M.D.Orange, CT 064771467763946
- Jeffrey Orell, MDShelton, CT 064841982636106
- Peter Byeff, MDSouthington, CT 064891710979463
- Brian Byrne, M.D.Southington, CT 064891508844010
- Jason Chang, M.D.Southington, CT 064891174739072
- Wylie Hosmer, MDSouthington, CT 064891720136757
- Ian Walters, MDWallingford, CT 064921316271471
Common questions
What is Justine Ryu, M.D.'s NPI number?
Justine Ryu, M.D.'s National Provider Identifier (NPI) is 1881058899, issued on Apr 6, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Justine Ryu, M.D. located?
The NPPES record lists a practice address at 240 Indian River RD, Orange, CT, 06477. Phone: (203) 795-1664. Providers update this record themselves, so call before visiting.
How can I verify Justine Ryu, M.D.'s license?
NPPES lists Connecticut license number 75447, 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 Justine Ryu, M.D. prescribe under Medicare Part D?
In 2024, Justine Ryu, M.D. had 81 Medicare Part D claims for 20 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Justine Ryu, M.D.'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.