Dr. Justine Ryu, MD
- Medicare services, 2024
- 82
- Medicare patients, 2024
- 85
- Part D claims, 2024
- 81
- MIPS score, 2024
- 87
- Hospital affiliations
- 1
- Practice address
- 20 York Street, New Haven, CT 06510
- Practice phone
- Call (203) 688-5900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Yale New Haven Psychiatric Hospital (York St)
Psychiatric Inpatient Facility · New Haven, Connecticut
Find Dr. Ryu's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Justine Ryu is a hematologist and oncologist in New Haven, Connecticut
Dr. Ryu practices at Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut.
Dr. Ryu's NPI, 1881058899, was assigned on April 6, 2016. Dr. Ryu graduated from Boston University School of Medicine in 2016. Dr. Ryu holds Connecticut license 75447.
- NPI
- 1881058899NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971898214
- NPI enumeration date
- April 6, 2016
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (203) 688-5900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 36
- Medical school graduation
- 2016
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Justine Ryu practices at Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut
Dr. Ryu's primary practice is Yale New Haven Psychiatric Hospital (York St), at 20 York Street, New Haven, CT 06510. The practice phone is (203) 688-5900.
- Yale New Haven Psychiatric Hospital (York St)20 York Street, New Haven, CT 06510Phone(203) 688-5900
Source: Dmand AI Affiliation Data
Dr. Justine Ryu is affiliated with 3 sites of care and 1 medical group
Dr. Ryu's primary practice is Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut. Dr. Ryu is also affiliated with Yale New Haven Hospital. The medical group on file is Yale Health. Dmand AI also links Dr. Ryu to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Justine Ryu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ryu practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Yale New Haven Psychiatric Hospital (York St) | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Justine Ryu is one of 175 hematologists and oncologists in Connecticut
Hematology and oncology is Dr. Ryu's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dmand AI has Dr. Ryu's licenses on file in 2 states: Connecticut and Massachusetts.
Specialties and state licenses
- Hematology and oncology, ConnecticutPrimary
- Internal medicine, Massachusetts
Hematologists and oncologists near Dr. Ryu
Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Justine Ryu billed Medicare for 82 services in 2024
CMS data shows 82 Medicare services from Dr. Ryu across 4 procedure codes in 2024, for 85 Medicare patients. Medicare paid $10,079 for them.
Dr. Ryu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 112024: 82645%
Where Dr. Ryu's Medicare services took place, 2024
- In an office3948%
- In a facility4352%
Dr. Ryu compared with the Connecticut median for hematologists and oncologists, 2024
- Dr. Ryu
- Connecticut median
- Medicare services
- 82vs 54185% below
- Medicare patients
- 85vs 20859% below
- Part D claims
- 55vs 45188% below
Medians across 168 hematologists and oncologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Ryu's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ryu and other hematologists and oncologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Justine Ryu treated 85 Medicare patients in 2024, average age 73
CMS counts 85 Medicare patients who saw Dr. Ryu in 2024. The largest group is 75 to 84, with 37 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 32% are also on Medicaid. Their average risk score is 2.86, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Ryu's median patient age at 65, with 48% women.
Dr. Ryu's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ryu's Medicare patients by sex, 2024
- Women3642%
- Men4958%
Chronic conditions among Dr. Ryu's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis65%
- Ischemic heart disease51%
- Diabetes46%
- Mood disorders42%
- Anxiety40%
- Chronic kidney disease40%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ryu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Justine Ryu wrote 81 Medicare Part D claims in 2024
In 2024, Dr. Ryu wrote 81 Medicare Part D claims for 20 patients. 38% of them were for generic drugs. CMS names the drug for 55 of them, across 2 drugs with 11 or more claims each, at $26,656 in total drug cost. In 2023, CMS named 20 claims across 1 drug.
Dr. Ryu's Part D claims by kind of drug, 2024
- Generic31 claims38%
- Brand-name50 claims62%
Dr. Ryu's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 202024: 55175%
Drugs named by CMS: 2 in 2024, 1 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Justine Ryu scored 87 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Ryu for performance year 2024, reported as part of a group. Dr. Ryu accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Ryu's MIPS scores, performance year 2024
- 87of 100Final score
- 77.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Justine Ryu received $82,886 in industry payments from 2020 to 2025
CMS Open Payments shows 3 general payments to Dr. Ryu from 3 drug and device companies from 2020 to 2025. Grants make up the largest share, 100% of the total. Sanofi and Genzyme US Companies paid the most, $82,500.
General payments to Dr. Ryu by program year, 2020 to 2025
General payments to Dr. Ryu by kind, 2020 to 2025
- Grants$82,740100%
- Food and beverage$1460%
Companies that paid Dr. Ryu the most, 2020 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Justine Ryu graduated from Boston University School of Medicine
Dr. Ryu graduated from Boston University School of Medicine in 2016.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Justine Ryu's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Justine Ryu
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Justine Ryu's NPI number?
Dr. Justine Ryu's NPI number is 1881058899. It was assigned on April 6, 2016, and it is active in the NPI Registry.
What kind of doctor is Dr. Justine Ryu?
Dr. Justine Ryu is a hematologist and oncologist in New Haven, Connecticut. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Justine Ryu practice?
Dr. Ryu practices at 20 York Street, New Haven, CT 06510. Dr. Ryu's primary practice is Yale New Haven Psychiatric Hospital (York St) in New Haven, Connecticut. Dmand AI also links Dr. Ryu to 1 group practice or clinic.
What is Dr. Justine Ryu's office phone number?
The practice phone on file for Dr. Ryu is (203) 688-5900.
What is Dr. Justine Ryu's medical license number?
Dr. Ryu holds Connecticut license 75447, one of the licenses on file in 2 states.
Which states has Dr. Justine Ryu been licensed in?
Dmand AI has state licenses on file for Dr. Ryu in Connecticut and Massachusetts.
Which hospitals is Dr. Justine Ryu affiliated with?
Dr. Ryu is affiliated with Yale New Haven Hospital.
What medical group is Dr. Justine Ryu part of?
Dr. Ryu is linked to Yale Health.
Does Dr. Justine Ryu accept Medicare?
Yes. CMS data shows Dr. Ryu billed Medicare for 82 services in 2024, and Dr. Ryu accepts Medicare assignment.
What is Dr. Justine Ryu's MIPS score?
Dr. Ryu's MIPS final score for performance year 2024 is 87 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Justine Ryu see?
CMS counts 85 Medicare patients who saw Dr. Ryu in 2024, with an average age of 73.
What services does Dr. Justine Ryu bill to Medicare?
In 2024, Dr. Ryu's most billed Medicare services were hospital inpatient care (99223), office visit, new patient (99205) and office visit, established patient (99215).
Where did Dr. Justine Ryu go to medical school?
Dr. Ryu graduated from Boston University School of Medicine in 2016.
What drugs does Dr. Justine Ryu prescribe most?
In 2024 Medicare Part D data, Dr. Ryu's most prescribed drugs by claims were Eliquis and Warfarin Sodium.
Has Dr. Justine Ryu received payments from drug or device companies?
CMS Open Payments shows $82,886 in general payments to Dr. Ryu from 3 companies from 2020 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Justine Ryu been practicing?
Dr. Ryu graduated from medical school in 2016, 10 years ago.
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