Dr. Joyce Y. Chung, MD
- Medicare services, 2024
- 1,117
- Medicare patients, 2024
- 79
- Part D claims, 2024
- 88
- MIPS score, 2024
- 87
- Hospital affiliations
- 1
- Practice address
- 130 Division St, Derby, CT 06418
- Practice phone
- Call (203) 732-7500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chung's professional email, personal email and mobile number
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Dr. Joyce Y. Chung is a radiation oncologist in Derby, Connecticut
Dr. Chung practices at Griffin Hospital in Derby, Connecticut, part of Griffin Hospital.
Dr. Chung's NPI, 1841282191, was assigned on August 22, 2005. Dr. Chung graduated from Georgetown University School of Medicine in 1993. Dr. Chung holds Connecticut license 034676.
- NPI
- 1841282191NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305847575
- NPI enumeration date
- August 22, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (203) 732-7500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joyce Y. Chung practices at 2 locations in Derby, Connecticut
Dr. Chung's primary practice is Griffin Hospital, at 130 Division St, Derby, CT 06418 in New Haven County. The practice phone is (203) 732-7500. Dr. Chung also practices at Griffin Hospital, 144 Division St, Derby, CT 06418.
- Griffin HospitalPrimary130 Division St, Derby, CT 06418 · New Haven CountyPhone(203) 732-7500
- Griffin Hospital144 Division St, Derby, CT 06418 · Naugatuck Vly CountyPhone(203) 732-7360
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Joyce Y. Chung is affiliated with 2 sites of care and 1 medical group
Dr. Chung's primary practice is Griffin Hospital in Derby, Connecticut, part of Griffin Hospital. The medical group on file is Yale Health. Dmand AI also links Dr. Chung 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. Joyce Y. Chung's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chung practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Griffin Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Joyce Y. Chung is one of 68 radiation oncologists in Connecticut
Radiation oncology is Dr. Chung's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dr. Chung is licensed in Connecticut.
Specialties and state licenses
- Radiation oncology, ConnecticutPrimary
Radiation oncologists near Dr. Chung
Counts of radiation 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. Joyce Y. Chung billed Medicare for 1,117 services in 2024
CMS data shows 1,117 Medicare services from Dr. Chung across 11 procedure codes in 2024, for 79 Medicare patients. Medicare paid $65,374 for them.
Dr. Chung's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 1,1732024: 1,0976%
- Office and hospital visits
- 2023: 702024: 2071%
Where Dr. Chung's Medicare services took place, 2024
- In an office1,08497%
- In a facility333%
Dr. Chung compared with the Connecticut median for radiation oncologists, 2024
- Dr. Chung
- Connecticut median
- Medicare services
- 1,117vs 1,0427% above
- Medicare patients
- 79vs 16452% below
- Part D claims
- 14vs 5675% below
Medians across 67 radiation oncologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Chung'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. Chung and other radiation oncologists in Connecticut.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joyce Y. Chung treated 79 Medicare patients in 2024, average age 77
CMS counts 79 Medicare patients who saw Dr. Chung in 2024. The largest group is 75 to 84, with 39 patients. 75% of them have cancer, and 75% have high blood pressure. 19% are also on Medicaid. Their average risk score is 2.25, 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. Chung's median patient age at 70, with 63% women.
Dr. Chung's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chung's Medicare patients by sex, 2024
- Women3646%
- Men4354%
Chronic conditions among Dr. Chung's Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Ischemic heart disease42%
- COPD37%
- Anxiety33%
- Mood disorders27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chung's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women63%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Joyce Y. Chung wrote 88 Medicare Part D claims in 2024
In 2024, Dr. Chung wrote 88 Medicare Part D claims for 39 patients. 98% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $458 in total drug cost. In 2023, CMS named 66 claims across 5 drugs.
Dr. Chung's Part D claims by kind of drug, 2024
- Generic86 claims98%
- Brand-name and other2 claims2%
Dr. Chung'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.
Drug classes CMS tracks in Dr. Chung's Part D claims, 2024
- Opioids23%20 of 88 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 662024: 1479%
Drugs named by CMS: 1 in 2024, 5 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. Joyce Y. Chung 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. Chung for performance year 2024, reported as part of a group. Dr. Chung accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chung as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Chung'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. Joyce Y. Chung received $295 in industry payments from 2017 to 2025
CMS Open Payments shows 12 general payments to Dr. Chung from 7 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $94.
General payments to Dr. Chung by program year, 2017 to 2025
Companies that paid Dr. Chung the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Joyce Y. Chung graduated from Georgetown University School of Medicine
Dr. Chung graduated from Georgetown University School of Medicine in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Joyce Y. Chung'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice 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. Joyce Y. Chung
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. Joyce Y. Chung's NPI number?
Dr. Joyce Y. Chung's NPI number is 1841282191. It was assigned on August 22, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Joyce Y. Chung?
Dr. Joyce Y. Chung is a radiation oncologist in Derby, Connecticut. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Joyce Y. Chung practice?
Dr. Chung practices at 130 Division St, Derby, CT 06418. Dr. Chung also practices at 144 Division St, Derby, CT 06418. Dr. Chung's primary practice is Griffin Hospital in Derby, Connecticut, part of Griffin Hospital. Dmand AI also links Dr. Chung to 1 group practice or clinic.
What is Dr. Joyce Y. Chung's office phone number?
The practice phone on file for Dr. Chung is (203) 732-7500.
What is Dr. Joyce Y. Chung's medical license number?
Dr. Chung holds Connecticut license 034676.
Which hospitals is Dr. Joyce Y. Chung affiliated with?
Dr. Chung practices at Griffin Hospital in Derby, Connecticut.
What medical group is Dr. Joyce Y. Chung part of?
Dr. Chung is linked to Yale Health.
Does Dr. Joyce Y. Chung accept Medicare?
Yes. CMS data shows Dr. Chung billed Medicare for 1,117 services in 2024, and Dr. Chung accepts Medicare assignment.
Does Dr. Joyce Y. Chung offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chung as offering telehealth services.
What is Dr. Joyce Y. Chung's MIPS score?
Dr. Chung'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. Joyce Y. Chung see?
CMS counts 79 Medicare patients who saw Dr. Chung in 2024, with an average age of 77.
What services does Dr. Joyce Y. Chung bill to Medicare?
In 2024, Dr. Chung's most billed Medicare services were radiation oncology (77014), radiation oncology (77427) and radiation oncology (77300).
Where did Dr. Joyce Y. Chung go to medical school?
Dr. Chung graduated from Georgetown University School of Medicine in 1993.
What drugs does Dr. Joyce Y. Chung prescribe most?
In 2024 Medicare Part D data, Dr. Chung's most prescribed drugs by claims were Dexamethasone.
Has Dr. Joyce Y. Chung received payments from drug or device companies?
CMS Open Payments shows $295 in general payments to Dr. Chung from 7 companies from 2017 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Joyce Y. Chung been practicing?
Dr. Chung graduated from medical school in 1993, 33 years ago.
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