Dr. Benjamin Shay Chee Ko, MD
- Medicare services, 2024
- 351
- Medicare patients, 2024
- 212
- Part D claims, 2024
- 172
- Hospital affiliations
- 2
- Industry payments
- $157
- Practice address
- 5841 S Maryland Ave, Chicago, IL 60637
- Practice phone
- Call (773) 702-1530
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
The University of Chicago Medical Center
Chicago, Illinois
Find Dr. Ko'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. Benjamin Shay Chee Ko is a nephrologist in Chicago, Illinois
Dr. Ko practices at The University of Chicago Medical Center in Chicago, Illinois.
Dr. Ko's NPI, 1619096583, was assigned on March 29, 2007. Dr. Ko graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2001.
- NPI
- 1619096583NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1951401686
- NPI enumeration date
- March 29, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (773) 702-1530
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Benjamin Shay Chee Ko practices at The University of Chicago Medical Center in Chicago, Illinois
Dr. Ko's primary practice is The University of Chicago Medical Center, at 5841 S Maryland Ave, Chicago, IL 60637 in Cook County. The practice phone is (773) 702-1530.
- The University of Chicago Medical Center5841 S Maryland Ave, Chicago, IL 60637 · Cook CountyPhone(773) 702-1530
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Benjamin Shay Chee Ko is affiliated with 3 sites of care and 2 medical groups
Dr. Ko's primary practice is The University of Chicago Medical Center in Chicago, Illinois. Dr. Ko is also affiliated with University of Chicago Medical Center. The medical group on file is UChicago Medicine Physicians. Dmand AI also links Dr. Ko to 1 more hospital and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Benjamin Shay Chee Ko's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ko practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| The University of Chicago Medical Center | Available with a free account |
| +2 more sites 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. Benjamin Shay Chee Ko is one of 534 nephrologists in Illinois
Nephrology is Dr. Ko's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Ko has a license on file in Illinois.
Specialties and state licenses
- Nephrology, Illinois
Nephrologists near Dr. Ko
Counts of nephrologists 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. Benjamin Shay Chee Ko billed Medicare for 351 services in 2024
CMS data shows 351 Medicare services from Dr. Ko across 7 procedure codes in 2024, for 212 Medicare patients. Medicare paid $32,346 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Ko's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3372024: 26920%
- Tests and treatments
- 2023: 02024: 82
Dr. Ko compared with the Illinois median for nephrologists, 2024
- Dr. Ko
- Illinois median
- Medicare services
- 351vs 1,28473% below
- Medicare patients
- 212vs 35741% below
- Part D claims
- 65vs 57889% below
Medians across 526 nephrologists in Illinois with Dmand AI profiles that report each measure.
Dr. Ko'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. Ko?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ko and other nephrologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Benjamin Shay Chee Ko treated 212 Medicare patients in 2024, average age 69
CMS counts 212 Medicare patients who saw Dr. Ko in 2024. The largest group is 65 to 74, with 78 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 54% are also on Medicaid. Their average risk score is 3.97, 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. Ko's median patient age at 73, with 55% women.
Dr. Ko's Medicare patients by age, 2024
Dr. Ko's Medicare patients by sex, 2024
- Women9947%
- Men11353%
Chronic conditions among Dr. Ko's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol74%
- Diabetes62%
- Heart failure59%
- Ischemic heart disease50%
- Arthritis49%
- Atrial fibrillation36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ko'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
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Benjamin Shay Chee Ko wrote 172 Medicare Part D claims in 2024
In 2024, Dr. Ko wrote 172 Medicare Part D claims for 48 patients. 90% of them were for generic drugs. CMS names the drug for 65 of them, across 5 drugs with 11 or more claims each, at $2,279 in total drug cost. In 2023, CMS named 105 claims across 6 drugs.
Dr. Ko's Part D claims by kind of drug, 2024
- Generic155 claims90%
- Brand-name17 claims10%
Dr. Ko'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: 1052024: 6538%
Drugs named by CMS: 5 in 2024, 6 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. Benjamin Shay Chee Ko takes part in Medicare
Dr. Ko 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)
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. Benjamin Shay Chee Ko received $157 in industry payments from 2023 to 2024
CMS Open Payments shows 4 general payments to Dr. Ko from 3 drug and device companies from 2023 to 2024. Consulting fees make up the largest share, 57% of the total. GlaxoSmithKline, LLC. paid the most, $90.
General payments to Dr. Ko by program year, 2023 to 2024
General payments to Dr. Ko by kind, 2023 to 2024
- Consulting fees$9057%
- Speaker and faculty fees$3925%
- Food and beverage$2818%
Companies that paid Dr. Ko the most, 2023 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Benjamin Shay Chee Ko graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb)
Dr. Ko graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Benjamin Shay Chee Ko'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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) |
| 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. Benjamin Shay Chee Ko
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. Benjamin Shay Chee Ko's NPI number?
Dr. Benjamin Shay Chee Ko's NPI number is 1619096583. It was assigned on March 29, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Benjamin Shay Chee Ko?
Dr. Benjamin Shay Chee Ko is a nephrologist in Chicago, Illinois. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Benjamin Shay Chee Ko practice?
Dr. Ko practices at 5841 S Maryland Ave, Chicago, IL 60637. Dr. Ko's primary practice is The University of Chicago Medical Center in Chicago, Illinois. Dmand AI also links Dr. Ko to 1 hospital and 1 medical group.
What is Dr. Benjamin Shay Chee Ko's office phone number?
The practice phone on file for Dr. Ko is (773) 702-1530.
Which hospitals is Dr. Benjamin Shay Chee Ko affiliated with?
Dr. Ko is affiliated with University of Chicago Medical Center. Dmand AI links Dr. Ko to 1 more hospital.
What medical group is Dr. Benjamin Shay Chee Ko part of?
Dr. Ko is linked to UChicago Medicine Physicians. Dmand AI links Dr. Ko to 1 more medical group.
Does Dr. Benjamin Shay Chee Ko accept Medicare?
Yes. CMS data shows Dr. Ko billed Medicare for 351 services in 2024, and Dr. Ko accepts Medicare assignment.
How many Medicare patients does Dr. Benjamin Shay Chee Ko see?
CMS counts 212 Medicare patients who saw Dr. Ko in 2024, with an average age of 69.
What services does Dr. Benjamin Shay Chee Ko bill to Medicare?
In 2024, Dr. Ko's most billed Medicare services were office visit, established patient (99214), hospital inpatient care (99233) and dialysis (90945).
Where did Dr. Benjamin Shay Chee Ko go to medical school?
Dr. Ko graduated from University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) in 2001.
Show 3 more questionsShow fewer questions
What drugs does Dr. Benjamin Shay Chee Ko prescribe most?
In 2024 Medicare Part D data, Dr. Ko's most prescribed drugs by claims were Amlodipine Besylate, Chlorthalidone and Lisinopril.
Has Dr. Benjamin Shay Chee Ko received payments from drug or device companies?
CMS Open Payments shows $157 in general payments to Dr. Ko from 3 companies from 2023 to 2024. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Benjamin Shay Chee Ko been practicing?
Dr. Ko graduated from medical school in 2001, 25 years ago.
Selling to nephrology practices?
See nephrologists in Illinois 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