Dr. Yu S. Chen, MD
- Medicare services, 2024
- 989
- Medicare patients, 2024
- 146
- Part D claims, 2024
- 227
- Publications
- 3
- Hospital affiliations
- 5
- Practice address
- 400 Medical Plz, Lake Saint Louis, MO 63367
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
SSM Health Cancer Care - HOPD
Acute Care Hospital outpatient department · Lake Saint Louis, Missouri
Find Dr. Chen'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. Yu S. Chen is a radiation oncologist in Lake Saint Louis, Missouri
Dr. Chen practices at SSM Health Cancer Care - HOPD in Lake Saint Louis, Missouri.
Dr. Chen's NPI, 1740501014, was assigned on June 21, 2010. Dr. Chen graduated from Albert Einstein College of Medicine of Yeshiva University in 2010. Dr. Chen holds Missouri license 2015020211.
- NPI
- 1740501014NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143537936
- NPI enumeration date
- June 21, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Yu S. Chen practices at SSM Health Cancer Care - HOPD in Lake Saint Louis, Missouri
Dr. Chen's primary practice is SSM Health Cancer Care - HOPD, at 400 Medical Plz, Lake Saint Louis, MO 63367.
- SSM Health Cancer Care - HOPD400 Medical Plz, Lake Saint Louis, MO 63367
Source: Dmand AI Affiliation Data
Dr. Yu S. Chen is affiliated with 9 sites of care and 1 medical group
Dr. Chen's primary practice is SSM Health Cancer Care - HOPD in Lake Saint Louis, Missouri. Dr. Chen is also affiliated with SSM Health St. Joseph Hospital - Lake Saint Louis. The medical group on file is SSM Health Medical Group. Dmand AI also links Dr. Chen to 4 more hospitals, 2 hospital outpatient departments and 1 group practice or clinic, each named with a free account. Dr. Chen's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Yu S. Chen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chen practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| SSM Health Cancer Care - HOPD | Available with a free account |
| +8 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Yu S. Chen is one of 117 radiation oncologists in Missouri
Radiation oncology is Dr. Chen's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dmand AI has Dr. Chen's licenses on file in 2 states: Missouri and Illinois.
Specialties and state licenses
- Radiation oncology, MissouriPrimary
- Illinois license
Radiation oncologists near Dr. Chen
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. Yu S. Chen billed Medicare for 989 services in 2024
CMS data shows 989 Medicare services from Dr. Chen across 14 procedure codes in 2024, for 146 Medicare patients. Medicare paid $57,162 for them.
Dr. Chen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 6322024: 56211%
- Other services
- 2023: 5292024: 24055%
- Office and hospital visits
- 2023: 1752024: 1877%
Where Dr. Chen's Medicare services took place, 2024
- In an office18719%
- In a facility80281%
Dr. Chen compared with the Missouri median for radiation oncologists, 2024
- Dr. Chen
- Missouri median
- Medicare services
- 989vs 1,21018% below
- Medicare patients
- 146vs 18119% below
- Part D claims
- 136vs 602.3 times
Medians across 117 radiation oncologists in Missouri with Dmand AI profiles that report each measure.
Dr. Chen'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.
Need commercial claims for Dr. Chen?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chen and other radiation oncologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Yu S. Chen treated 146 Medicare patients in 2024, average age 73
CMS counts 146 Medicare patients who saw Dr. Chen in 2024. The largest group is 65 to 74, with 75 patients. 75% of them have cancer, and 75% have high blood pressure. Their average risk score is 2.08, 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. Chen's median patient age at 73, with 62% women.
Dr. Chen's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chen's Medicare patients by sex, 2024
- Women9263%
- Men5437%
Chronic conditions among Dr. Chen's Medicare patients, 2024
- Cancer75%
- High blood pressure75%
- High cholesterol66%
- Arthritis38%
- COPD36%
- Diabetes31%
- Ischemic heart disease29%
- Tobacco use27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women62%
- Men38%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Yu S. Chen wrote 227 Medicare Part D claims in 2024
In 2024, Dr. Chen wrote 227 Medicare Part D claims for 82 patients. 72% of them were for generic drugs. CMS names the drug for 136 of them, across 8 drugs with 11 or more claims each, at $1,695 in total drug cost. In 2023, CMS named 152 claims across 8 drugs.
Dr. Chen's Part D claims by kind of drug, 2024
- Generic164 claims72%
- Brand-name63 claims28%
Dr. Chen'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. Chen's Part D claims, 2024
- Opioids19%44 of 227 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: 1522024: 13611%
Drugs named by CMS: 8 in 2024, 8 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
How Dr. Yu S. Chen takes part in Medicare
Dr. Chen accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Yu S. Chen has 3 publications on record
Dmand AI links 3 papers to Dr. Chen in 2025.
Recent publications by Dr. Chen
See who Dr. Chen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chen works with, so you can find a warm path to the right radiation oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Yu S. Chen received $48 in industry payments from 2020 to 2023
CMS Open Payments shows 4 general payments to Dr. Chen from 3 drug and device companies from 2020 to 2023. Food and beverage make up the largest share, 58% of the total. Mevion_Medical_Systems_Inc paid the most, $20.
General payments to Dr. Chen by program year, 2020 to 2023
General payments to Dr. Chen by kind, 2020 to 2023
- Food and beverage$2858%
- Gifts$2042%
Companies that paid Dr. Chen the most, 2020 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Yu S. Chen graduated from Albert Einstein College of Medicine of Yeshiva University
Dr. Chen graduated from Albert Einstein College of Medicine of Yeshiva University in 2010.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Yu S. Chen'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Yu S. Chen
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. Yu S. Chen's NPI number?
Dr. Yu S. Chen's NPI number is 1740501014. It was assigned on June 21, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. Yu S. Chen?
Dr. Yu S. Chen is a radiation oncologist in Lake Saint Louis, Missouri. The primary specialty in the NPI Registry is Radiation Oncology Physician (taxonomy code 2085R0001X).
Where does Dr. Yu S. Chen practice?
Dr. Chen practices at 400 Medical Plz, Lake Saint Louis, MO 63367. Dr. Chen's primary practice is SSM Health Cancer Care - HOPD in Lake Saint Louis, Missouri. Dmand AI also links Dr. Chen to 4 hospitals, 2 hospital outpatient departments and 1 group practice or clinic.
What is Dr. Yu S. Chen's medical license number?
Dr. Chen holds Missouri license 2015020211, one of the licenses on file in 2 states.
Which states has Dr. Yu S. Chen been licensed in?
Dmand AI has state licenses on file for Dr. Chen in Missouri and Illinois.
Which hospitals is Dr. Yu S. Chen affiliated with?
Dr. Chen is affiliated with SSM Health St. Joseph Hospital - Lake Saint Louis. Dmand AI links Dr. Chen to 4 more hospitals.
What medical group is Dr. Yu S. Chen part of?
Dr. Chen is linked to SSM Health Medical Group.
Does Dr. Yu S. Chen accept Medicare?
Yes. CMS data shows Dr. Chen billed Medicare for 989 services in 2024, and Dr. Chen accepts Medicare assignment.
How many Medicare patients does Dr. Yu S. Chen see?
CMS counts 146 Medicare patients who saw Dr. Chen in 2024, with an average age of 73.
What services does Dr. Yu S. Chen bill to Medicare?
In 2024, Dr. Chen's most billed Medicare services were medicare service (G6002), radiation oncology (77014) and radiation oncology (77427).
Show 5 more questionsShow fewer questions
Where did Dr. Yu S. Chen go to medical school?
Dr. Chen graduated from Albert Einstein College of Medicine of Yeshiva University in 2010.
What drugs does Dr. Yu S. Chen prescribe most?
In 2024 Medicare Part D data, Dr. Chen's most prescribed drugs by claims were Levothyroxine Sodium, Memantine HCl and Omeprazole.
Has Dr. Yu S. Chen received payments from drug or device companies?
CMS Open Payments shows $48 in general payments to Dr. Chen from 3 companies from 2020 to 2023. The largest total came from Mevion_Medical_Systems_Inc.
How long has Dr. Yu S. Chen been practicing?
Dr. Chen graduated from medical school in 2010, 16 years ago.
Does Dr. Yu S. Chen do research?
Dmand AI links 3 publications to Dr. Chen.
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