Dr. Nancy S. Reau, MD
- Medicare services, 2024
- 556
- Medicare patients, 2024
- 388
- Part D claims, 2024
- 839
- Publications
- 91
- Clinical trials
- 6
- Practice address
- 1653 West Congress Parkway, Chicago, IL 60612
- Practice phone
- Call (312) 942-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Reau's professional email, personal email and mobile number
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Dr. Nancy S. Reau is a gastroenterologist in Chicago, Illinois
Dr. Reau practices at Rush University Medical Center in Chicago, Illinois, part of Rush System for Health.
Dr. Reau's NPI, 1164585683, was assigned on December 18, 2006. Dr. Reau graduated from Ohio State University College of Medicine in 1996.
- NPI
- 1164585683NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799751384
- NPI enumeration date
- December 18, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (312) 942-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nancy S. Reau practices at Rush University Medical Center in Chicago, Illinois
Dr. Reau's primary practice is Rush University Medical Center, at 1653 West Congress Parkway, Chicago, IL 60612 in Cook County. The practice phone is (312) 942-5000.
- Rush University Medical Center1653 West Congress Parkway, Chicago, IL 60612 · Cook CountyPhone(312) 942-5000
Source: Dmand AI Affiliation Data
Dr. Nancy S. Reau is affiliated with 6 sites of care and 3 medical groups
Dr. Reau's primary practice is Rush University Medical Center in Chicago, Illinois, part of Rush System for Health. Dr. Reau is also affiliated with Silver Cross Hospital. The medical group on file is Rush University Internists. Dmand AI also links Dr. Reau to 3 more hospitals, 2 medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nancy S. Reau's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Reau practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Rush University Medical Center | Available with a free account |
| +5 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Rush System for Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Nancy S. Reau is one of 771 gastroenterologists in Illinois
Gastroenterology is Dr. Reau's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Reau has a license on file in Illinois.
Specialties and state licenses
- Gastroenterology, Illinois
Gastroenterologists near Dr. Reau
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. Nancy S. Reau billed Medicare for 556 services in 2024
CMS data shows 556 Medicare services from Dr. Reau across 6 procedure codes in 2024, for 388 Medicare patients. Medicare paid $60,143 for them.
Dr. Reau's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5172024: 5568%
Where Dr. Reau's Medicare services took place, 2024
- In an office35263%
- In a facility20437%
Dr. Reau compared with the Illinois median for gastroenterologists, 2024
- Dr. Reau
- Illinois median
- Medicare services
- 556vs 49812% above
- Medicare patients
- 388vs 30726% above
- Part D claims
- 695vs 37088% above
Medians across 757 gastroenterologists in Illinois with Dmand AI profiles that report each measure.
Dr. Reau'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. Reau and other gastroenterologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nancy S. Reau treated 388 Medicare patients in 2024, average age 70
CMS counts 388 Medicare patients who saw Dr. Reau in 2024. The largest group is 65 to 74, with 193 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 2.07, 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. Reau's median patient age at 64, with 55% women.
Dr. Reau's Medicare patients by age, 2024
Dr. Reau's Medicare patients by sex, 2024
- Women20252%
- Men18648%
Chronic conditions among Dr. Reau's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis51%
- Diabetes44%
- Ischemic heart disease39%
- Chronic kidney disease37%
- Mood disorders29%
- Depression26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Reau's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nancy S. Reau wrote 839 Medicare Part D claims in 2024
In 2024, Dr. Reau wrote 839 Medicare Part D claims for 159 patients. 67% of them were for generic drugs. CMS names the drug for 695 of them, across 16 drugs with 11 or more claims each, at $1,203,284 in total drug cost. In 2023, CMS named 612 claims across 19 drugs.
Dr. Reau's Part D claims by kind of drug, 2024
- Generic565 claims67%
- Brand-name274 claims33%
Dr. Reau'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. Reau's Part D claims, 2024
- Antibiotics9%75 of 839 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: 6122024: 69514%
Drugs named by CMS: 16 in 2024, 19 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
How Dr. Nancy S. Reau takes part in Medicare
Dr. Reau accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Nancy S. Reau has 91 publications on record
Dmand AI links 91 papers to Dr. Reau, published from 2010 to 2025. 2024 was the busiest year, with 10. The most frequent topics are Antiviral Agents, Hepatitis C, Chronic and Hepacivirus. Dr. Reau has published most often in Hepatology. Dr. Reau's most frequent co-authors are David R. Nelson, MD, Richard K. Sterling, MD and Adrian M. Di Bisceglie, MD.
Dr. Reau's papers by year, 2016 to 2025
Topics Dr. Reau writes about most
- Antiviral Agents
- Hepatitis C, Chronic
- Hepacivirus
- Hepatitis C
- Liver Cirrhosis
- Liver Diseases
- Drug Therapy, Combination
- Liver Transplantation
Dr. Reau's most frequent co-authors
- David R. Nelson, MD8 shared papers
- Richard K. Sterling, MD8 shared papers
- Adrian M. Di Bisceglie, MD7 shared papers
Recent publications by Dr. Reau
Gastroenterol Rep (Oxf)
See who Dr. Reau researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Reau 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. Nancy S. Reau has worked on 6 clinical trials
Dmand AI links Dr. Reau to 6 clinical trials, 2 of them phase 3 studies. Conditions studied include Hepatitis C, Hepatitis D and Flaviviridae Infections. Eiger BioPharmaceuticals sponsors the most, 2.
Conditions in Dr. Reau's trials
- Hepatitis C
- Hepatitis D
- Flaviviridae Infections
- Hepatitis, Viral, Human
- Hepadnaviridae Infections
Investigators on the most trials with Dr. Reau
- Eugene R. Schiff, MD3 shared trials
- Richard K. Sterling, MD3 shared trials
- Viviana Figueroa Diaz, MD2 shared trials
Recent clinical trials with Dr. Reau
Phase 3 Study to Evaluate the Efficacy and Safety of Peginterferon Lambda for 48 Weeks in Patients With Chronic HDV (opens in a new tab)
An Observational Study of Patients With Chronic Hepatitis B (CHB) Infection (opens in a new tab)
Multi-Center, Randomized, Open-Label Study of G/P +/- RBV for NS5A + SOF Previously Treated GT1 HCV Subjects (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Nancy S. Reau received $727,016 in industry payments from 2016 to 2025
CMS Open Payments shows 928 general payments to Dr. Reau from 46 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 59% of the total. Gilead Sciences, Inc. paid the most, $291,770. It also lists 4 research payments totaling $7,627 in 2016.
General payments to Dr. Reau by program year, 2016 to 2025
General payments to Dr. Reau by kind, 2016 to 2025
- Consulting fees$423,71759%
- Travel and lodging$180,44925%
- Speaker and faculty fees$68,65410%
- Food and beverage$16,8462%
- Other$27,3754%
Companies that paid Dr. Reau 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. Nancy S. Reau graduated from Ohio State University College of Medicine
Dr. Reau graduated from Ohio State University College of Medicine in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nancy S. Reau'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 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)Doctors and Clinicians Utilization Data (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. Nancy S. Reau
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. Nancy S. Reau's NPI number?
Dr. Nancy S. Reau's NPI number is 1164585683. It was assigned on December 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Nancy S. Reau?
Dr. Nancy S. Reau is a gastroenterologist in Chicago, Illinois. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Nancy S. Reau practice?
Dr. Reau practices at 1653 West Congress Parkway, Chicago, IL 60612. Dr. Reau's primary practice is Rush University Medical Center in Chicago, Illinois, part of Rush System for Health. Dmand AI also links Dr. Reau to 3 hospitals, 2 medical groups and 1 group practice or clinic.
What is Dr. Nancy S. Reau's office phone number?
The practice phone on file for Dr. Reau is (312) 942-5000.
Which hospitals is Dr. Nancy S. Reau affiliated with?
Dr. Reau practices at Rush University Medical Center in Chicago, Illinois. Dr. Reau is also affiliated with Silver Cross Hospital. Dmand AI links Dr. Reau to 3 more hospitals.
What medical group is Dr. Nancy S. Reau part of?
Dr. Reau is linked to Rush University Internists. Dmand AI links Dr. Reau to 2 more medical groups.
Does Dr. Nancy S. Reau accept Medicare?
Yes. CMS data shows Dr. Reau billed Medicare for 556 services in 2024, and Dr. Reau accepts Medicare assignment.
How many Medicare patients does Dr. Nancy S. Reau see?
CMS counts 388 Medicare patients who saw Dr. Reau in 2024, with an average age of 70.
What services does Dr. Nancy S. Reau bill to Medicare?
In 2024, Dr. Reau's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and hospital inpatient care (99233).
Where did Dr. Nancy S. Reau go to medical school?
Dr. Reau graduated from Ohio State University College of Medicine in 1996.
Show 5 more questionsShow fewer questions
What drugs does Dr. Nancy S. Reau prescribe most?
In 2024 Medicare Part D data, Dr. Reau's most prescribed drugs by claims were Ursodiol, Xifaxan and Furosemide.
Has Dr. Nancy S. Reau received payments from drug or device companies?
CMS Open Payments shows $727,016 in general payments to Dr. Reau from 46 companies from 2016 to 2025. The largest total came from Gilead Sciences, Inc.
How long has Dr. Nancy S. Reau been practicing?
Dr. Reau graduated from medical school in 1996, 30 years ago.
Does Dr. Nancy S. Reau do research?
Dmand AI links 91 publications to Dr. Reau, published from 2010 to 2025. Dr. Reau has worked on 6 clinical trials.
Who does Dr. Nancy S. Reau publish with?
Dr. Reau's most frequent co-authors are David R. Nelson, MD (8 shared papers), Richard K. Sterling, MD (8 shared papers) and Adrian M. Di Bisceglie, MD (7 shared papers).
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