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Dr. Daniel J. Geenen, MD
NPI1144297508
- Medicare services, 2023
- 185
- Part D claims, 2024
- 109
- Publications
- 1
- Clinical trials
- 3
- Hospital affiliations
- 1
- Practice address
- 2900 W Oklahoma Ave, Milwaukee, WI 53215
- Practice phone
- Call (414) 649-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Geenen'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. Daniel J. Geenen is a gastroenterologist in Milwaukee, Wisconsin
Dr. Geenen practices at Aurora St. Luke's Medical Center in Milwaukee, Wisconsin, part of Advocate Health.
Dr. Geenen's NPI, 1144297508, was assigned on March 3, 2006. Dr. Geenen graduated from Medical College of Wisconsin in 1989. Dr. Geenen holds Wisconsin license 31528-020.
NPI and contact details
- NPI
- 1144297508NPI Registry (opens in a new tab)
- NPI enumeration date
- March 3, 2006
- NPI status
- Active
- Practice phone
- (414) 649-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Daniel J. Geenen practices at Aurora St. Luke's Medical Center in Milwaukee, Wisconsin
Dr. Geenen's primary practice is Aurora St. Luke's Medical Center, at 2900 W Oklahoma Ave, Milwaukee, WI 53215 in Milwaukee County. The practice phone is (414) 649-6000.
- Aurora St. Luke's Medical Center2900 W Oklahoma Ave, Milwaukee, WI 53215 · Milwaukee CountyPhone(414) 649-6000
Source: Dmand AI Affiliation Data
Dr. Daniel J. Geenen is affiliated with 2 sites of care and 1 medical group
Dr. Geenen's primary practice is Aurora St. Luke's Medical Center in Milwaukee, Wisconsin, part of Advocate Health. The medical group on file is GI Associates. Dmand AI also links Dr. Geenen to 1 more therapy and rehab clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Daniel J. Geenen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Geenen practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Aurora St. Luke's 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. Daniel J. Geenen is one of 277 gastroenterologists in Wisconsin
Gastroenterology is Dr. Geenen's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Geenen is licensed in Wisconsin.
Specialties and state licenses
- Gastroenterology, WisconsinPrimary
Gastroenterologists near Dr. Geenen
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
277gastroenterologists in Wisconsin70gastroenterologists in Milwaukee10gastroenterologists at Aurora St. Luke's Medical Center
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Daniel J. Geenen billed Medicare for 185 services in 2023
CMS data shows 185 Medicare services from Dr. Geenen across 8 procedure codes in 2023. Medicare paid $16,425 for them.
Medicare services, 2023185
Paid by Medicare$16,425
Procedure codes8
Dr. Geenen's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 3472023: 11068%
- Surgery
- 2022: 1192023: 6149%
- Other services
- 2022: 682023: 1479%
Where Dr. Geenen's Medicare services took place, 2023
- In an office5630%
- In a facility12970%
Dr. Geenen compared with the Wisconsin median for gastroenterologists, 2023
- Dr. Geenen
- Wisconsin median
- Medicare services
- 185vs 32944% below
- Part D claims
- 50vs 42988% below
Medians across 278 gastroenterologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Geenen's most billed Medicare procedure codes, 2023
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. Geenen and other gastroenterologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daniel J. Geenen's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Dr. Geenen's median patient age at 68, with 67% women.
Dr. Geenen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women67%
- Men33%
Source: Dmand AI Patient Panel Data
Dr. Daniel J. Geenen wrote 109 Medicare Part D claims in 2024
In 2024, Dr. Geenen wrote 109 Medicare Part D claims for 59 patients. 92% of them were for generic drugs. CMS names the drug for 50 of them, across 3 drugs with 11 or more claims each, at $728 in total drug cost. In 2023, CMS named 1,289 claims across 25 drugs.
Part D claims, 2024109
Drugs named by CMS3
Total drug cost$728
Part D patients59
Dr. Geenen's Part D claims by kind of drug, 2024
- Generic100 claims92%
- Brand-name and other9 claims8%
Dr. Geenen'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: 1,2892024: 5096%
Drugs named by CMS: 3 in 2024, 25 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
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Dr. Daniel J. Geenen has 1 publication on record
Dmand AI links 1 paper to Dr. Geenen in 2019. Dr. Geenen's most frequent co-authors are Barry Mathew Berger, MD, Russell I. Heigh, MD and Thomas F. Imperiale, MD.
Papers1
Dr. Geenen's most frequent co-authors
- Barry Mathew Berger, MD1 shared paper
- Russell I. Heigh, MD1 shared paper
- Thomas F. Imperiale, MD1 shared paper
Recent publications by Dr. Geenen
See who Dr. Geenen researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Geenen works with, so you can find a warm path to the right gastroenterologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Daniel J. Geenen has worked on 3 clinical trials
Dmand AI links Dr. Geenen to 3 clinical trials. Conditions studied include Colitis, Ulcerative, Colitis and Rectal Diseases. Eli Lilly and Company sponsors the most, 2. Open Payments lists research payments to Dr. Geenen that name 1 trial.
Conditions in Dr. Geenen's trials
- Colitis, Ulcerative
- Colitis
- Rectal Diseases
- Colorectal Neoplasms
Investigators on the most trials with Dr. Geenen
- Anurekha B. Chadha, MD3 shared trials
- Bincy Paulose Abraham, MD2 shared trials
- Waqqas Afif, MD2 shared trials
Recent clinical trials with Dr. Geenen
$660 in research paymentsColitis, UlcerativeColitisMirikizumab
Colitis, UlcerativeColitisMirikizumab IVMirikizumab SC
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Daniel J. Geenen received $49 in industry payments from 2018 to 2022
CMS Open Payments shows 4 general payments to Dr. Geenen from 4 drug and device companies from 2018 to 2022. Food and beverage make up the largest share, 100% of the total. Nestle Healthcare Nutrition Inc. paid the most, $15. It also lists 1 research payment totaling $660 in 2018, naming 1 clinical trial.
General payments to Dr. Geenen by program year, 2018 to 2022
Companies that paid Dr. Geenen the most, 2018 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Daniel J. Geenen graduated from Medical College of Wisconsin
Dr. Geenen graduated from Medical College of Wisconsin in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Daniel J. Geenen'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 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (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. Daniel J. Geenen
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. Daniel J. Geenen's NPI number?
Dr. Daniel J. Geenen's NPI number is 1144297508. It was assigned on March 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel J. Geenen?
Dr. Daniel J. Geenen is a gastroenterologist in Milwaukee, Wisconsin. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Daniel J. Geenen practice?
Dr. Geenen practices at 2900 W Oklahoma Ave, Milwaukee, WI 53215. Dr. Geenen's primary practice is Aurora St. Luke's Medical Center in Milwaukee, Wisconsin, part of Advocate Health. Dmand AI also links Dr. Geenen to 1 therapy and rehab clinic.
What is Dr. Daniel J. Geenen's office phone number?
The practice phone on file for Dr. Geenen is (414) 649-6000.
What is Dr. Daniel J. Geenen's medical license number?
Dr. Geenen holds Wisconsin license 31528-020.
Which hospitals is Dr. Daniel J. Geenen affiliated with?
Dr. Geenen practices at Aurora St. Luke's Medical Center in Milwaukee, Wisconsin.
What medical group is Dr. Daniel J. Geenen part of?
Dr. Geenen is linked to GI Associates.
Does Dr. Daniel J. Geenen accept Medicare?
Yes. CMS data shows Dr. Geenen billed Medicare for 185 services in 2023.
What services does Dr. Daniel J. Geenen bill to Medicare?
In 2023, Dr. Geenen's most billed Medicare services were office visit, established patient (99213), hospital inpatient care (99232) and surgery: digestive system (45380).
Where did Dr. Daniel J. Geenen go to medical school?
Dr. Geenen graduated from Medical College of Wisconsin in 1989.
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What drugs does Dr. Daniel J. Geenen prescribe most?
In 2024 Medicare Part D data, Dr. Geenen's most prescribed drugs by claims were Pantoprazole Sodium, Omeprazole and Dicyclomine HCl.
Has Dr. Daniel J. Geenen received payments from drug or device companies?
CMS Open Payments shows $49 in general payments to Dr. Geenen from 4 companies from 2018 to 2022. The largest total came from Nestle Healthcare Nutrition Inc.
How long has Dr. Daniel J. Geenen been practicing?
Dr. Geenen graduated from medical school in 1989, 37 years ago.
Does Dr. Daniel J. Geenen do research?
Dmand AI links 1 publication to Dr. Geenen. Dr. Geenen has worked on 3 clinical trials.
Who does Dr. Daniel J. Geenen publish with?
Dr. Geenen's most frequent co-authors are Barry Mathew Berger, MD (1 shared paper), Russell I. Heigh, MD (1 shared paper) and Thomas F. Imperiale, MD (1 shared paper).
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