Dr. Karen E. Sein Ohn, MD
- Medicare services, 2024
- 259
- Medicare patients, 2024
- 168
- Part D claims, 2024
- 561
- MIPS score, 2024
- 78
- Hospital affiliations
- 1
- Practice address
- 3333 W Deyoung St, Marion, IL 62959
- Practice phone
- Call (618) 998-7000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Heartland Regional Medical Center
Marion, Illinois
Find Dr. Sein Ohn'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. Karen E. Sein Ohn is a gastroenterologist in Marion, Illinois
Dr. Sein Ohn practices at Heartland Regional Medical Center in Marion, Illinois.
Dr. Sein Ohn's NPI, 1518119536, was assigned on October 22, 2008. Dr. Sein Ohn holds Michigan license 4301069021.
- NPI
- 1518119536NPI Registry (opens in a new tab)
- NPI enumeration date
- October 22, 2008
- NPI status
- Active
- Practice phone
- (618) 998-7000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Karen E. Sein Ohn practices at Heartland Regional Medical Center in Marion, Illinois
Dr. Sein Ohn's primary practice is Heartland Regional Medical Center, at 3333 W Deyoung St, Marion, IL 62959 in Williamson County. The practice phone is (618) 998-7000.
- Heartland Regional Medical Center3333 W Deyoung St, Marion, IL 62959 · Williamson CountyPhone(618) 998-7000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Karen E. Sein Ohn is affiliated with 2 sites of care and 1 medical group
Dr. Sein Ohn's primary practice is Heartland Regional Medical Center in Marion, Illinois. Dr. Sein Ohn is also affiliated with Gateway Regional Medical Center. The medical group on file is Deaconess Illinois Specialty Clinic, Kirkwood.
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. Karen E. Sein Ohn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sein Ohn practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Heartland Regional Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Karen E. Sein Ohn is one of 771 gastroenterologists in Illinois
Gastroenterology is Dr. Sein Ohn's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Sein Ohn is licensed in Michigan.
Specialties and state licenses
- Gastroenterology, MichiganPrimary
Gastroenterologists near Dr. Sein Ohn
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. Karen E. Sein Ohn billed Medicare for 259 services in 2024
CMS data shows 259 Medicare services from Dr. Sein Ohn across 8 procedure codes in 2024, for 168 Medicare patients. Medicare paid $25,319 for them.
Dr. Sein Ohn's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 1282024: 16630%
- Office and hospital visits
- 2023: 3432024: 9373%
Where Dr. Sein Ohn's Medicare services took place, 2024
- In an office9336%
- In a facility16664%
Dr. Sein Ohn compared with the Illinois median for gastroenterologists, 2024
- Dr. Sein Ohn
- Illinois median
- Medicare services
- 259vs 49848% below
- Medicare patients
- 168vs 30745% below
- Part D claims
- 496vs 37034% above
Medians across 757 gastroenterologists in Illinois with Dmand AI profiles that report each measure.
Dr. Sein Ohn'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Sein Ohn and other gastroenterologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Karen E. Sein Ohn treated 168 Medicare patients in 2024, average age 71
CMS counts 168 Medicare patients who saw Dr. Sein Ohn in 2024. The largest group is 65 to 74, with 82 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 1.29, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Sein Ohn's median patient age at 61, with 55% women.
Dr. Sein Ohn's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Sein Ohn's Medicare patients by sex, 2024
- Women10663%
- Men6237%
Chronic conditions among Dr. Sein Ohn's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis58%
- Anxiety42%
- Diabetes39%
- Ischemic heart disease32%
- Mood disorders29%
- COPD27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Sein Ohn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Karen E. Sein Ohn wrote 561 Medicare Part D claims in 2024
In 2024, Dr. Sein Ohn wrote 561 Medicare Part D claims for 168 patients. 82% of them were for generic drugs. CMS names the drug for 496 of them, across 15 drugs with 11 or more claims each, at $257,006 in total drug cost. In 2023, CMS named 607 claims across 11 drugs.
Dr. Sein Ohn's Part D claims by kind of drug, 2024
- Generic459 claims82%
- Brand-name102 claims18%
Dr. Sein Ohn'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. Sein Ohn's Part D claims, 2024
- Antibiotics2%11 of 561 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: 6072024: 49618%
Drugs named by CMS: 15 in 2024, 11 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. Karen E. Sein Ohn scored 78 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 78 out of 100 for Dr. Sein Ohn for performance year 2024, reported as part of a group.
Dr. Sein Ohn's MIPS scores, performance year 2024
- 78of 100Final score
- 49of 100Quality
- 95of 100Promoting Interoperability
- 40of 100Improvement Activities
- 69of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Karen E. Sein Ohn received $3,287 in industry payments from 2017 to 2025
CMS Open Payments shows 135 general payments to Dr. Sein Ohn from 27 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $1,280.
General payments to Dr. Sein Ohn by program year, 2017 to 2025
Companies that paid Dr. Sein Ohn the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Karen E. Sein Ohn'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 | Clinician Public Reporting: Overall MIPS Performance (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. Karen E. Sein Ohn
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. Karen E. Sein Ohn's NPI number?
Dr. Karen E. Sein Ohn's NPI number is 1518119536. It was assigned on October 22, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Karen E. Sein Ohn?
Dr. Karen E. Sein Ohn is a gastroenterologist in Marion, Illinois. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Karen E. Sein Ohn practice?
Dr. Sein Ohn practices at 3333 W Deyoung St, Marion, IL 62959. Dr. Sein Ohn's primary practice is Heartland Regional Medical Center in Marion, Illinois.
What is Dr. Karen E. Sein Ohn's office phone number?
The practice phone on file for Dr. Sein Ohn is (618) 998-7000.
What is Dr. Karen E. Sein Ohn's medical license number?
Dr. Sein Ohn holds Michigan license 4301069021.
Which hospitals is Dr. Karen E. Sein Ohn affiliated with?
Dr. Sein Ohn is affiliated with Gateway Regional Medical Center.
What medical group is Dr. Karen E. Sein Ohn part of?
Dr. Sein Ohn is linked to Deaconess Illinois Specialty Clinic, Kirkwood.
Does Dr. Karen E. Sein Ohn accept Medicare?
Yes. CMS data shows Dr. Sein Ohn billed Medicare for 259 services in 2024.
What is Dr. Karen E. Sein Ohn's MIPS score?
Dr. Sein Ohn's MIPS final score for performance year 2024 is 78 out of 100, reported as part of a group.
How many Medicare patients does Dr. Karen E. Sein Ohn see?
CMS counts 168 Medicare patients who saw Dr. Sein Ohn in 2024, with an average age of 71.
Show 4 more questionsShow fewer questions
What services does Dr. Karen E. Sein Ohn bill to Medicare?
In 2024, Dr. Sein Ohn's most billed Medicare services were surgery: digestive system (43239), surgery: digestive system (45385) and office visit, established patient (99214).
What drugs does Dr. Karen E. Sein Ohn prescribe most?
In 2024 Medicare Part D data, Dr. Sein Ohn's most prescribed drugs by claims were Omeprazole, Ondansetron HCl and Zenpep.
Has Dr. Karen E. Sein Ohn received payments from drug or device companies?
CMS Open Payments shows $3,287 in general payments to Dr. Sein Ohn from 27 companies from 2017 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Karen E. Sein Ohn been practicing?
Dr. Sein Ohn graduated from medical school in 1985, 41 years ago.
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