Dr. Yun-Sen Ralph Chu, MD
- Medicare services, 2024
- 828
- Medicare patients, 2024
- 339
- Part D claims, 2024
- 48
- Clinical trials
- 5
- MIPS score, 2024
- 93
- Practice address
- 9117 Lyndale Avenue South, Bloomington, MN 55420
- Practice phone
- Call (952) 835-1235
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Chu Surgery Center
Surgery Center - Medicare-Certified · Bloomington, Minnesota
Find Dr. Chu'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. Yun-Sen Ralph Chu is an ophthalmologist in Minneapolis, Minnesota
Dr. Chu practices at Chu Surgery Center in Bloomington, Minnesota.
Dr. Chu's NPI, 1659367423, was assigned on September 27, 2005. Dr. Chu graduated from Northwestern University Feinberg Medical School in 1992. Dr. Chu holds Minnesota license 38792.
- NPI
- 1659367423NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406886100
- NPI enumeration date
- September 27, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (952) 835-1235
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Yun-Sen Ralph Chu practices at Chu Surgery Center in Bloomington, Minnesota
Dr. Chu's primary practice is Chu Surgery Center, at 9117 Lyndale Avenue South, Bloomington, MN 55420. The practice phone is (952) 835-1235.
- Chu Surgery Center9117 Lyndale Avenue South, Bloomington, MN 55420Phone(952) 835-1235
Source: Dmand AI Affiliation Data
Dr. Yun-Sen Ralph Chu is affiliated with 2 sites of care and 1 medical group
Dr. Chu's primary practice is Chu Surgery Center in Bloomington, Minnesota. Dmand AI also links Dr. Chu to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Yun-Sen Ralph Chu's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chu practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Chu Surgery Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Yun-Sen Ralph Chu is one of 346 ophthalmologists in Minnesota
Ophthalmology is Dr. Chu's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Chu is licensed in Minnesota.
Specialties and state licenses
- Ophthalmology, MinnesotaPrimary
Ophthalmologists near Dr. Chu
Counts of ophthalmologists 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. Yun-Sen Ralph Chu billed Medicare for 828 services in 2024
CMS data shows 828 Medicare services from Dr. Chu across 5 procedure codes in 2024, for 339 Medicare patients. Medicare paid $212,467 for them.
Dr. Chu's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 6342024: 6163%
- Tests and treatments
- 2023: 2112024: 212No change
Where Dr. Chu's Medicare services took place, 2024
- In an office21226%
- In a facility61674%
Dr. Chu compared with the Minnesota median for ophthalmologists, 2024
- Dr. Chu
- Minnesota median
- Medicare services
- 828vs 810Close to median
- Medicare patients
- 339vs 326Close to median
- Part D claims
- 26vs 51795% below
Medians across 364 ophthalmologists in Minnesota with Dmand AI profiles that report each measure.
Dr. Chu'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. Chu?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chu and other ophthalmologists in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Yun-Sen Ralph Chu treated 339 Medicare patients in 2024, average age 75
CMS counts 339 Medicare patients who saw Dr. Chu in 2024. The largest group is 65 to 74, with 183 patients. 71% of them have high cholesterol, and 68% have high blood pressure. 3% are also on Medicaid. Their average risk score is 0.97, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chu's median patient age at 72, with 60% women.
Dr. Chu's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chu's Medicare patients by sex, 2024
- Women19257%
- Men14743%
Chronic conditions among Dr. Chu's Medicare patients, 2024
- High cholesterol71%
- High blood pressure68%
- Arthritis40%
- Diabetes22%
- Ischemic heart disease20%
- Mood disorders19%
- Chronic kidney disease18%
- Depression18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chu's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women60%
- Men40%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Yun-Sen Ralph Chu wrote 48 Medicare Part D claims in 2024
In 2024, Dr. Chu wrote 48 Medicare Part D claims for 23 patients. 98% of them were for generic drugs. CMS names the drug for 26 of them, across 1 drug with 11 or more claims each, at $1,918 in total drug cost. In 2023, CMS named 42 claims across 2 drugs.
Dr. Chu's Part D claims by kind of drug, 2024
- Generic47 claims98%
- Brand-name and other1 claims2%
Dr. Chu'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: 422024: 2638%
Drugs named by CMS: 1 in 2024, 2 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. Yun-Sen Ralph Chu scored 93 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 93 out of 100 for Dr. Chu for performance year 2024, reported as part of a group. Dr. Chu accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 737 procedures of cataract surgery by Dr. Chu, more than 98% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Chu's MIPS scores, performance year 2024
- 93of 100Final score
- 100of 100Quality
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Chu ranks in Medicare procedure volume
- Cataract surgery
- 98th percentile737 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Yun-Sen Ralph Chu has worked on 5 clinical trials
Dmand AI links Dr. Chu to 5 clinical trials, 2 of them phase 3 studies. Conditions studied include Cataract, Dry Eye Syndromes and Hyperemia.
Clinical trials with Dr. Chu by phase
- NonePhase 1: no trials
- 1Phase 2: 1 trial
- 2Phase 3: 2 trials
- 1Phase 4: 1 trial
Trials with no phase (devices, behavioral studies) are left out.
Conditions in Dr. Chu's trials
- Cataract
- Dry Eye Syndromes
- Hyperemia
- Presbyopia
- Keratoconjunctivitis Sicca
Investigators on the most trials with Dr. Chu
- Jason Bacharach, MD2 shared trials
- Bret L. Fisher, MD2 shared trials
- Joseph Pravoot Gira, MD2 shared trials
Recent clinical trials with Dr. Chu
Study to Evaluate the Safety and Efficacy of Epi-on Corneal Cross-linking in Eyes With Progressive Keratoconus (opens in a new tab)
Safety and Efficacy of KPI-121 in Subjects With Dry Eye Disease (opens in a new tab)
Sources: ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. Yun-Sen Ralph Chu received $411,636 in industry payments from 2016 to 2025
CMS Open Payments shows 330 general payments to Dr. Chu from 27 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 71% of the total. Carl Zeiss Meditec, Inc. paid the most, $143,960. It also lists 6 research payments totaling $155,038 from 2016 to 2023.
General payments to Dr. Chu by program year, 2016 to 2025
General payments to Dr. Chu by kind, 2016 to 2025
- Consulting fees$282,56571%
- Speaker and faculty fees$37,3919%
- Travel and lodging$28,6647%
- Education speaker fees$27,9507%
- Other$22,8716%
Companies that paid Dr. Chu the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Yun-Sen Ralph Chu graduated from Northwestern University Feinberg Medical School
Dr. Chu graduated from Northwestern University Feinberg Medical School in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Yun-Sen Ralph Chu'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Clinical trials and co-investigators | ClinicalTrials.gov (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. Yun-Sen Ralph Chu
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. Yun-Sen Ralph Chu's NPI number?
Dr. Yun-Sen Ralph Chu's NPI number is 1659367423. It was assigned on September 27, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Yun-Sen Ralph Chu?
Dr. Yun-Sen Ralph Chu is an ophthalmologist in Minneapolis, Minnesota. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Yun-Sen Ralph Chu practice?
Dr. Chu practices at 9117 Lyndale Avenue South, Bloomington, MN 55420. Dr. Chu's primary practice is Chu Surgery Center in Bloomington, Minnesota. Dmand AI also links Dr. Chu to 1 group practice or clinic and 1 medical group.
What is Dr. Yun-Sen Ralph Chu's office phone number?
The practice phone on file for Dr. Chu is (952) 835-1235.
What is Dr. Yun-Sen Ralph Chu's medical license number?
Dr. Chu holds Minnesota license 38792.
Does Dr. Yun-Sen Ralph Chu accept Medicare?
Yes. CMS data shows Dr. Chu billed Medicare for 828 services in 2024, and Dr. Chu accepts Medicare assignment.
What is Dr. Yun-Sen Ralph Chu's MIPS score?
Dr. Chu's MIPS final score for performance year 2024 is 93 out of 100, reported as part of a group.
How many Medicare patients does Dr. Yun-Sen Ralph Chu see?
CMS counts 339 Medicare patients who saw Dr. Chu in 2024, with an average age of 75.
What services does Dr. Yun-Sen Ralph Chu bill to Medicare?
In 2024, Dr. Chu's most billed Medicare services were surgery: eye (66984), eye exam or test (92136) and surgery: eye (66821).
Where did Dr. Yun-Sen Ralph Chu go to medical school?
Dr. Chu graduated from Northwestern University Feinberg Medical School in 1992.
Show 4 more questionsShow fewer questions
What drugs does Dr. Yun-Sen Ralph Chu prescribe most?
In 2024 Medicare Part D data, Dr. Chu's most prescribed drugs by claims were Valacyclovir.
Has Dr. Yun-Sen Ralph Chu received payments from drug or device companies?
CMS Open Payments shows $411,636 in general payments to Dr. Chu from 27 companies from 2016 to 2025. The largest total came from Carl Zeiss Meditec, Inc.
How long has Dr. Yun-Sen Ralph Chu been practicing?
Dr. Chu graduated from medical school in 1992, 34 years ago.
Does Dr. Yun-Sen Ralph Chu do research?
Dr. Chu has worked on 5 clinical trials.
Selling to ophthalmology practices?
See ophthalmologists in Minnesota by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card