$3,077 in research paymentsColitis, UlcerativeColitisMirikizumab
Dr. Eugene F. Yen, MD
NPI1508944018PAC ID0244337079
- Medicare services, 2024
- 383
- Medicare patients, 2024
- 278
- Part D claims, 2024
- 742
- Clinical trials
- 2
- MIPS score, 2024
- 95
- Practice address
- 800 N Westmoreland Rd, Lake Forest, IL 60045
- Practice phone
- Call (312) 695-0646
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northwestern Medical Group
Lake Forest, Illinois
Find Dr. Yen'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. Eugene F. Yen is a gastroenterologist in Lake Forest, Illinois
Dr. Yen practices at Northwestern Medical Group in Lake Forest, Illinois.
Dr. Yen's NPI, 1508944018, was assigned on November 1, 2006. Dr. Yen graduated from Tufts University School of Medicine in 2001. Dr. Yen holds Illinois license 036-117818.
NPI and contact details
- NPI
- 1508944018NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244337079
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (312) 695-0646
- 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. Eugene F. Yen practices at Northwestern Medical Group in Lake Forest, Illinois
Dr. Yen's primary practice is Northwestern Medical Group, at 800 N Westmoreland Rd, Lake Forest, IL 60045 in Lake County. The practice phone is (312) 695-0646.
- Northwestern Medical Group800 N Westmoreland Rd, Lake Forest, IL 60045 · Lake CountyPhone(312) 695-0646
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Eugene F. Yen is affiliated with 5 sites of care and 2 medical groups
Dr. Yen's primary practice is Northwestern Medical Group in Lake Forest, Illinois. Dr. Yen is also affiliated with Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Yen to 3 more hospitals and 1 medical group, each named with a free account.
Northwestern Medical GroupPrimary
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. Eugene F. Yen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Yen practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Medical Group | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Eugene F. Yen is one of 771 gastroenterologists in Illinois
Gastroenterology is Dr. Yen's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Yen is licensed in Illinois.
Specialties and state licenses
- Gastroenterology, IllinoisPrimary
Gastroenterologists near Dr. Yen
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
771gastroenterologists in Illinois
7gastroenterologists in Lake Forest
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Eugene F. Yen billed Medicare for 383 services in 2024
CMS data shows 383 Medicare services from Dr. Yen across 10 procedure codes in 2024, for 278 Medicare patients. Medicare paid $47,557 for them.
Medicare services, 2024383
Medicare patients278
Paid by Medicare$47,557
Procedure codes10
Dr. Yen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2112024: 2309%
- Surgery
- 2023: 1202024: 1265%
- Other services
- 2023: 02024: 15
- Imaging
- 2023: 02024: 12
Where Dr. Yen's Medicare services took place, 2024
- In an office12833%
- In a facility25567%
Dr. Yen compared with the Illinois median for gastroenterologists, 2024
- Dr. Yen
- Illinois median
- Medicare services
- 383vs 49823% below
- Medicare patients
- 278vs 3079% below
- Part D claims
- 644vs 37074% above
Medians across 757 gastroenterologists in Illinois with Dmand AI profiles that report each measure.
Dr. Yen'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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Eugene F. Yen treated 278 Medicare patients in 2024, average age 73
CMS counts 278 Medicare patients who saw Dr. Yen in 2024. The largest group is 65 to 74, with 147 patients. 75% of them have high cholesterol, and 62% have high blood pressure. 6% are also on Medicaid. Their average risk score is 1.22, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Yen's median patient age at 66, with 54% women.
Medicare patients, 2024278
Average age73
Average risk score1.22
Also on Medicaid6%
Dr. Yen's Medicare patients by age, 2024
Dr. Yen's Medicare patients by sex, 2024
- Women16760%
- Men11140%
Chronic conditions among Dr. Yen's Medicare patients, 2024
- High cholesterol75%
- High blood pressure62%
- Arthritis46%
- Ischemic heart disease27%
- Anxiety26%
- Mood disorders25%
- Chronic kidney disease24%
- Diabetes23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Yen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Eugene F. Yen wrote 742 Medicare Part D claims in 2024
In 2024, Dr. Yen wrote 742 Medicare Part D claims for 231 patients. 60% of them were for generic drugs. CMS names the drug for 644 of them, across 20 drugs with 11 or more claims each, at $2,554,438 in total drug cost. In 2023, CMS named 441 claims across 18 drugs.
Part D claims, 2024742
Drugs named by CMS20
Total drug cost$2.6M
Part D patients231
Dr. Yen's Part D claims by kind of drug, 2024
- Generic445 claims60%
- Brand-name297 claims40%
Dr. Yen'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. Yen's Part D claims, 2024
- Antibiotics3%25 of 742 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: 4412024: 64446%
Drugs named by CMS: 20 in 2024, 18 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. Eugene F. Yen scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Yen for performance year 2024, reported through an alternative payment model (APM). Dr. Yen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Yen as offering telehealth. CMS counts 74 procedures of colonoscopy by Dr. Yen, more than 72% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Yen's MIPS scores, performance year 2024
- 95of 100Final score
- 83of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Yen ranks in Medicare procedure volume
- Colonoscopy
- 72nd percentile74 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 63rd percentile49 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)
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Dr. Eugene F. Yen has worked on 2 clinical trials
Dmand AI links Dr. Yen to 2 clinical trials. Conditions studied include Colitis, Ulcerative and Colitis. Eli Lilly and Company sponsors the most, 2. Open Payments lists research payments to Dr. Yen that name 2 trials.
Conditions in Dr. Yen's trials
- Colitis, Ulcerative
- Colitis
Investigators on the most trials with Dr. Yen
- Bincy Paulose Abraham, MD2 shared trials
- Waqqas Afif, MD2 shared trials
- Yasmin Alishahi, MD2 shared trials
Recent clinical trials with Dr. Yen
$7,616 in research paymentsColitis, UlcerativeColitisMirikizumab IVMirikizumab SC
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. Eugene F. Yen received $221,568 in industry payments from 2016 to 2025
CMS Open Payments shows 327 general payments to Dr. Yen from 15 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 55% of the total. Janssen Pharmaceuticals, Inc paid the most, $98,111. It also lists 8 research payments totaling $63,487 from 2018 to 2021, naming 2 clinical trials.
General payments to Dr. Yen by program year, 2016 to 2025
General payments to Dr. Yen by kind, 2016 to 2025
$221.6Kin total
- Speaker and faculty fees$121,91055%
- Consulting fees$70,52432%
- Travel and lodging$17,6788%
- Food and beverage$8,3414%
- Other$3,1161%
Companies that paid Dr. Yen 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. Eugene F. Yen graduated from Tufts University School of Medicine
Dr. Yen graduated from Tufts University School of Medicine in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Eugene F. Yen'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)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. Eugene F. Yen
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. Eugene F. Yen's NPI number?
Dr. Eugene F. Yen's NPI number is 1508944018. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Eugene F. Yen?
Dr. Eugene F. Yen is a gastroenterologist in Lake Forest, Illinois. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Eugene F. Yen practice?
Dr. Yen practices at 800 N Westmoreland Rd, Lake Forest, IL 60045. Dr. Yen's primary practice is Northwestern Medical Group in Lake Forest, Illinois. Dmand AI also links Dr. Yen to 3 hospitals and 1 medical group.
What is Dr. Eugene F. Yen's office phone number?
The practice phone on file for Dr. Yen is (312) 695-0646.
What is Dr. Eugene F. Yen's medical license number?
Dr. Yen holds Illinois license 036-117818.
Which hospitals is Dr. Eugene F. Yen affiliated with?
Dr. Yen is affiliated with Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital. Dmand AI links Dr. Yen to 3 more hospitals.
What medical group is Dr. Eugene F. Yen part of?
Dr. Yen is linked to Northwestern Medical Faculty Foundation. Dmand AI links Dr. Yen to 1 more medical group.
Does Dr. Eugene F. Yen accept Medicare?
Yes. CMS data shows Dr. Yen billed Medicare for 383 services in 2024, and Dr. Yen accepts Medicare assignment.
Does Dr. Eugene F. Yen offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Yen as offering telehealth services.
What is Dr. Eugene F. Yen's MIPS score?
Dr. Yen's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
Show 7 more questionsShow fewer questions
How many Medicare patients does Dr. Eugene F. Yen see?
CMS counts 278 Medicare patients who saw Dr. Yen in 2024, with an average age of 73.
What services does Dr. Eugene F. Yen bill to Medicare?
In 2024, Dr. Yen's most billed Medicare services were office visit, established patient (99214), surgery: digestive system (45385) and surgery: digestive system (45380).
Where did Dr. Eugene F. Yen go to medical school?
Dr. Yen graduated from Tufts University School of Medicine in 2001.
What drugs does Dr. Eugene F. Yen prescribe most?
In 2024 Medicare Part D data, Dr. Yen's most prescribed drugs by claims were Stelara, Budesonide DR and Mesalamine.
Has Dr. Eugene F. Yen received payments from drug or device companies?
CMS Open Payments shows $221,568 in general payments to Dr. Yen from 15 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Eugene F. Yen been practicing?
Dr. Yen graduated from medical school in 2001, 25 years ago.
Does Dr. Eugene F. Yen do research?
Dr. Yen has worked on 2 clinical trials.
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