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Dr. Regan Michael Seipp, MD
NPI1306256284PAC ID4880813369
- Medicare services, 2024
- 4,193
- Medicare patients, 2024
- 452
- Part D claims, 2024
- 1,494
- Publications
- 2
- Hospital affiliations
- 4
- Practice address
- 120 W 22nd St, Oak Brook, IL 60523
- Practice phone
- Call (630) 260-4086
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Geneva Crossing Dialysis
Oak Brook, Illinois
Find Dr. Seipp'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. Regan Michael Seipp is a nephrologist in Oak Brook, Illinois
Dr. Seipp practices at Geneva Crossing Dialysis in Oak Brook, Illinois.
Dr. Seipp's NPI, 1306256284, was assigned on May 1, 2014. Dr. Seipp graduated from Creighton University School of Medicine in 2014. Dr. Seipp holds Illinois license 036148873.
NPI and contact details
- NPI
- 1306256284NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4880813369
- NPI enumeration date
- May 1, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (630) 260-4086
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Regan Michael Seipp practices at Geneva Crossing Dialysis in Oak Brook, Illinois
Dr. Seipp's primary practice is Geneva Crossing Dialysis, at 120 W 22nd St, Oak Brook, IL 60523 in Dupage County. The practice phone is (630) 260-4086.
- Geneva Crossing Dialysis120 W 22nd St, Oak Brook, IL 60523 · Dupage CountyPhone(630) 260-4086
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Regan Michael Seipp is affiliated with 7 sites of care and 1 medical group
Dr. Seipp's primary practice is Geneva Crossing Dialysis in Oak Brook, Illinois. Dr. Seipp is also affiliated with Northwestern Medicine Central DuPage Hospital. The medical group on file is DuPage Medical Group. Dmand AI also links Dr. Seipp to 3 more hospitals and 2 dialysis centers, each named with a free account.
Geneva Crossing DialysisPrimary
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. Regan Michael Seipp's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Seipp practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Geneva Crossing Dialysis | Available with a free account |
| +6 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Regan Michael Seipp is one of 534 nephrologists in Illinois
Nephrology is Dr. Seipp's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dmand AI has Dr. Seipp's licenses on file in 2 states: Illinois and Arizona.
Specialties and state licenses
- Nephrology, IllinoisPrimary
- Internal medicine, Arizona
Nephrologists near Dr. Seipp
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. Regan Michael Seipp billed Medicare for 4,193 services in 2024
CMS data shows 4,193 Medicare services from Dr. Seipp across 23 procedure codes in 2024, for 452 Medicare patients. Medicare paid $173,338 for them.
Medicare services, 20244,193
Medicare patients452
Paid by Medicare$173,338
Procedure codes23
Dr. Seipp's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 2,8332024: 2,50112%
- Office and hospital visits
- 2023: 9712024: 1,0589%
- Surgery
- 2023: 4882024: 35028%
- Other services
- 2023: 02024: 188
- Tests and treatments
- 2023: 912024: 965%
Where Dr. Seipp's Medicare services took place, 2024
- In an office3,50884%
- In a facility68516%
Dr. Seipp compared with the Illinois median for nephrologists, 2024
- Dr. Seipp
- Illinois median
- Medicare services
- 4,193vs 1,2843.3 times
- Medicare patients
- 452vs 35727% above
- Part D claims
- 1,338vs 5782.3 times
Medians across 526 nephrologists in Illinois with Dmand AI profiles that report each measure.
Dr. Seipp'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. Seipp?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Seipp and other nephrologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Regan Michael Seipp treated 452 Medicare patients in 2024, average age 77
CMS counts 452 Medicare patients who saw Dr. Seipp in 2024. The largest group is 75 to 84, with 178 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 13% are also on Medicaid. Their average risk score is 2.51, 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. Seipp's median patient age at 76, with 42% women.
Medicare patients, 2024452
Average age77
Average risk score2.51
Also on Medicaid13%
Dr. Seipp's Medicare patients by age, 2024
Dr. Seipp's Medicare patients by sex, 2024
- Women20946%
- Men24354%
Chronic conditions among Dr. Seipp's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease54%
- Diabetes53%
- Arthritis51%
- Heart failure48%
- Atrial fibrillation35%
Share of Medicare patients with each condition. A patient can have several.
Dr. Seipp's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women42%
- Men57%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Regan Michael Seipp wrote 1,494 Medicare Part D claims in 2024
In 2024, Dr. Seipp wrote 1,494 Medicare Part D claims for 299 patients. 78% of them were for generic drugs. CMS names the drug for 1,338 of them, across 25 drugs with 11 or more claims each, at $349,827 in total drug cost. In 2023, CMS named 1,420 claims across 26 drugs.
Part D claims, 20241,494
Drugs named by CMS25
Total drug cost$349,827
Part D patients299
Dr. Seipp's Part D claims by kind of drug, 2024
- Generic1,165 claims78%
- Brand-name329 claims22%
Dr. Seipp'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. Seipp's Part D claims, 2024
- Antibiotics1%12 of 1,494 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: 1,4202024: 1,3386%
Drugs named by CMS: 25 in 2024, 26 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. Regan Michael Seipp offers telehealth to Medicare patients
Dr. Seipp accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Seipp as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Regan Michael Seipp has 2 publications on record
Dmand AI links 2 papers to Dr. Seipp in 2021. 2021 was the busiest year, with 2. Dr. Seipp's most frequent co-authors are Hassan Amin, MD, John Robert Brandt, MD and Essam Bashir Elashi, MD.
Papers2
Dr. Seipp's most frequent co-authors
- Hassan Amin, MD1 shared paper
- John Robert Brandt, MD1 shared paper
- Essam Bashir Elashi, MD1 shared paper
Recent publications by Dr. Seipp
American Indian or Alaska NativeGraft RejectionGraft Survival
See who Dr. Seipp researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Seipp works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Regan Michael Seipp received $2,843 in industry payments from 2019 to 2025
CMS Open Payments shows 109 general payments to Dr. Seipp from 16 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 92% of the total. AstraZeneca Pharmaceuticals LP paid the most, $883.
General payments to Dr. Seipp by program year, 2019 to 2025
General payments to Dr. Seipp by kind, 2019 to 2025
$2.8Kin total
- Food and beverage$2,62592%
- Consulting fees$1505%
- Debt forgiveness$361%
- Education$311%
Companies that paid Dr. Seipp the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Regan Michael Seipp graduated from Creighton University School of Medicine
Dr. Seipp graduated from Creighton University School of Medicine in 2014.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Regan Michael Seipp'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) |
| Publications, topics and co-authors | PubMed (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. Regan Michael Seipp
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. Regan Michael Seipp's NPI number?
Dr. Regan Michael Seipp's NPI number is 1306256284. It was assigned on May 1, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Regan Michael Seipp?
Dr. Regan Michael Seipp is a nephrologist in Oak Brook, Illinois. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Regan Michael Seipp practice?
Dr. Seipp practices at 120 W 22nd St, Oak Brook, IL 60523. Dr. Seipp's primary practice is Geneva Crossing Dialysis in Oak Brook, Illinois. Dmand AI also links Dr. Seipp to 3 hospitals and 2 dialysis centers.
What is Dr. Regan Michael Seipp's office phone number?
The practice phone on file for Dr. Seipp is (630) 260-4086.
What is Dr. Regan Michael Seipp's medical license number?
Dr. Seipp holds Illinois license 036148873, one of the licenses on file in 2 states.
Which states has Dr. Regan Michael Seipp been licensed in?
Dmand AI has state licenses on file for Dr. Seipp in Illinois and Arizona.
Which hospitals is Dr. Regan Michael Seipp affiliated with?
Dr. Seipp is affiliated with Northwestern Medicine Central DuPage Hospital. Dmand AI links Dr. Seipp to 3 more hospitals.
What medical group is Dr. Regan Michael Seipp part of?
Dr. Seipp is linked to DuPage Medical Group.
Does Dr. Regan Michael Seipp accept Medicare?
Yes. CMS data shows Dr. Seipp billed Medicare for 4,193 services in 2024, and Dr. Seipp accepts Medicare assignment.
Does Dr. Regan Michael Seipp offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Seipp as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Regan Michael Seipp see?
CMS counts 452 Medicare patients who saw Dr. Seipp in 2024, with an average age of 77.
What services does Dr. Regan Michael Seipp bill to Medicare?
In 2024, Dr. Seipp's most billed Medicare services were hospital inpatient care (99233), lab and pathology test (82570) and surgery: heart and blood vessels (36415).
Where did Dr. Regan Michael Seipp go to medical school?
Dr. Seipp graduated from Creighton University School of Medicine in 2014.
What drugs does Dr. Regan Michael Seipp prescribe most?
In 2024 Medicare Part D data, Dr. Seipp's most prescribed drugs by claims were Torsemide, Losartan Potassium and Farxiga.
Has Dr. Regan Michael Seipp received payments from drug or device companies?
CMS Open Payments shows $2,843 in general payments to Dr. Seipp from 16 companies from 2019 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Regan Michael Seipp been practicing?
Dr. Seipp graduated from medical school in 2014, 12 years ago.
Does Dr. Regan Michael Seipp do research?
Dmand AI links 2 publications to Dr. Seipp.
Who does Dr. Regan Michael Seipp publish with?
Dr. Seipp's most frequent co-authors are Hassan Amin, MD (1 shared paper), John Robert Brandt, MD (1 shared paper) and Essam Bashir Elashi, MD (1 shared paper).
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