Dr. John Young Ko, DO
- Part D claims, 2024
- 249
- Hospital affiliations
- 1
- Industry payments
- $1,682
- Medical group
- 1
- State license
- 1
- Practice address
- 620 Shadow Lane, Las Vegas, NV 89106
- Practice phone
- Call (702) 388-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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. John Young Ko is a gastroenterologist in Chicago, Illinois
Dr. Ko practices at Valley Hospital Medical Center in Las Vegas, Nevada, part of Universal Health Services.
Dr. Ko's NPI, 1033841101, was assigned on June 28, 2022. Dr. Ko holds Nevada license DO3792.
- NPI
- 1033841101NPI Registry (opens in a new tab)
- NPI enumeration date
- June 28, 2022
- NPI status
- Active
- Practice phone
- (702) 388-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Young Ko practices in Las Vegas and Chicago
Dr. Ko's primary practice is Valley Hospital Medical Center, at 620 Shadow Lane, Las Vegas, NV 89106 in Clark County. The practice phone is (702) 388-4000. The NPI Registry lists Dr. Ko's practice address as 33 S State St, Chicago, IL 60603.
- Valley Hospital Medical CenterPrimary620 Shadow Lane, Las Vegas, NV 89106 · Clark CountyPhone(702) 388-4000
- NPI Registry address33 S State St, Chicago, IL 60603 · Cook CountyPhone(702) 388-8436
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. John Young Ko is affiliated with 1 site of care and 1 medical group
Dr. Ko's primary practice is Valley Hospital Medical Center in Las Vegas, Nevada, part of Universal Health Services. The medical group on file is Signify Health.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Young Ko's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ko practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Valley Hospital Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Young Ko is one of 771 gastroenterologists in Illinois
Gastroenterology is Dr. Ko's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Ko is licensed in Nevada.
Specialties and state licenses
- Gastroenterology, NevadaPrimary
Gastroenterologists near Dr. Ko
Counts of gastroenterologists 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. John Young Ko's patients have a median age of 70
Across all payers, Dmand AI patient panel data puts Dr. Ko's median patient age at 70, with 50% women.
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 70
Patient panel by sex, all payers
- Women50%
- Men48%
Source: Dmand AI Patient Panel Data
Dr. John Young Ko wrote 249 Medicare Part D claims in 2024
In 2024, Dr. Ko wrote 249 Medicare Part D claims for 45 patients. 90% of them were for generic drugs. CMS names the drug for 48 of them, across 4 drugs with 11 or more claims each, at $156 in total drug cost.
Dr. Ko's Part D claims by kind of drug, 2024
- Generic225 claims90%
- Brand-name24 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.
Drug classes CMS tracks in Dr. Ko's Part D claims, 2024
- Antibiotics4%11 of 249 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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
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Dr. John Young Ko received $1,682 in industry payments from 2024 to 2025
CMS Open Payments shows 23 general payments to Dr. Ko from 16 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $530.
General payments to Dr. Ko by program year, 2024 to 2025
Companies that paid Dr. Ko the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John Young 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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. John Young 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. John Young Ko's NPI number?
Dr. John Young Ko's NPI number is 1033841101. It was assigned on June 28, 2022, and it is active in the NPI Registry.
What kind of doctor is Dr. John Young Ko?
Dr. John Young Ko is a gastroenterologist in Chicago, Illinois. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. John Young Ko practice?
Dr. Ko practices at 620 Shadow Lane, Las Vegas, NV 89106. Dr. Ko also practices at 33 S State St, Chicago, IL 60603. Dr. Ko's primary practice is Valley Hospital Medical Center in Las Vegas, Nevada, part of Universal Health Services.
What is Dr. John Young Ko's office phone number?
The practice phone on file for Dr. Ko is (702) 388-4000.
What is Dr. John Young Ko's medical license number?
Dr. Ko holds Nevada license DO3792.
Which hospitals is Dr. John Young Ko affiliated with?
Dr. Ko practices at Valley Hospital Medical Center in Las Vegas, Nevada.
What medical group is Dr. John Young Ko part of?
Dr. Ko is linked to Signify Health.
What drugs does Dr. John Young Ko prescribe most?
In 2024 Medicare Part D data, Dr. Ko's most prescribed drugs by claims were Atorvastatin Calcium, Trazodone HCl and Amlodipine Besylate.
Has Dr. John Young Ko received payments from drug or device companies?
CMS Open Payments shows $1,682 in general payments to Dr. Ko from 16 companies from 2024 to 2025. The largest total came from Abbvie Inc.
How long has Dr. John Young Ko been practicing?
Dr. Ko's NPI was assigned in 2022.
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