Dr. Stephen B. Hanauer, MD
- Medicare services, 2024
- 355
- Medicare patients, 2024
- 202
- Part D claims, 2024
- 846
- Hospital affiliations
- 5
- Industry payments
- $522,318
- Practice address
- 251 E Huron St, Chicago, IL 60611
- Practice phone
- Call (312) 926-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hanauer's professional email, personal email and mobile number
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Dr. Stephen B. Hanauer is a gastroenterologist in Chicago, Illinois
Dr. Hanauer practices at Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare.
Dr. Hanauer's NPI, 1992868418, was assigned on December 18, 2006. Dr. Hanauer graduated from University of Michigan Medical School in 1973. Dr. Hanauer holds Illinois license 036057399.
- NPI
- 1992868418NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7911929252
- NPI enumeration date
- December 18, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (312) 926-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 79
- Medical school graduation
- 1973
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stephen B. Hanauer practices at Northwestern Memorial Hospital in Chicago, Illinois
Dr. Hanauer's primary practice is Northwestern Memorial Hospital, at 251 E Huron St, Chicago, IL 60611 in Cook County. The practice phone is (312) 926-2000.
- Northwestern Memorial Hospital251 E Huron St, Chicago, IL 60611 · Cook CountyPhone(312) 926-2000
Source: Dmand AI Affiliation Data
Dr. Stephen B. Hanauer is affiliated with 7 sites of care and 2 medical groups
Dr. Hanauer's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. Dr. Hanauer is also affiliated with Northwestern Medicine Central DuPage Hospital. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Hanauer to 3 more hospitals, 2 group practices and clinics and 1 medical group, 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. Stephen B. Hanauer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hanauer practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Memorial Hospital | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Northwestern Memorial HealthCare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Stephen B. Hanauer is one of 771 gastroenterologists in Illinois
Gastroenterology is Dr. Hanauer's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Hanauer is licensed in Illinois.
Specialties and state licenses
- Gastroenterology, IllinoisPrimary
Gastroenterologists near Dr. Hanauer
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. Stephen B. Hanauer billed Medicare for 355 services in 2024
CMS data shows 355 Medicare services from Dr. Hanauer across 7 procedure codes in 2024, for 202 Medicare patients. Medicare paid $36,497 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hanauer's Medicare services by type, 2024
- Office and hospital visits255
- Other services53
- Surgery47
Dr. Hanauer compared with the Illinois median for gastroenterologists, 2024
- Dr. Hanauer
- Illinois median
- Medicare services
- 355vs 49829% below
- Medicare patients
- 202vs 30734% below
- Part D claims
- 656vs 37077% above
Medians across 757 gastroenterologists in Illinois with Dmand AI profiles that report each measure.
Dr. Hanauer'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. Hanauer?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hanauer and other gastroenterologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephen B. Hanauer treated 202 Medicare patients in 2024, average age 72
CMS counts 202 Medicare patients who saw Dr. Hanauer in 2024. The largest group is 65 to 74, with 110 patients. 69% of them have high cholesterol, and 55% have high blood pressure. Their average risk score is 1.55, 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. Hanauer's median patient age at 64, with 49% women.
Dr. Hanauer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Hanauer's Medicare patients by sex, 2024
- Women10250%
- Men10050%
Chronic conditions among Dr. Hanauer's Medicare patients, 2024
- High cholesterol69%
- High blood pressure55%
- Arthritis42%
- Osteoporosis30%
- Ischemic heart disease26%
- Cancer24%
- Anxiety23%
- Mood disorders19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hanauer'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
- Women49%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stephen B. Hanauer wrote 846 Medicare Part D claims in 2024
In 2024, Dr. Hanauer wrote 846 Medicare Part D claims for 159 patients. 65% of them were for generic drugs. CMS names the drug for 656 of them, across 23 drugs with 11 or more claims each, at $2,853,914 in total drug cost.
Dr. Hanauer's Part D claims by kind of drug, 2024
- Generic547 claims65%
- Brand-name and other299 claims35%
Dr. Hanauer'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. Hanauer's Part D claims, 2024
- Antibiotics7%58 of 846 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
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. Stephen B. Hanauer ranks in the 59th percentile for colonoscopy in Medicare
Dr. Hanauer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 41 procedures of colonoscopy by Dr. Hanauer, more than 59% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Hanauer ranks in Medicare procedure volume
- Colonoscopy
- 59th percentile41 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 42nd percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Stephen B. Hanauer received $522,318 in industry payments from 2024 to 2025
CMS Open Payments shows 330 general payments to Dr. Hanauer from 17 drug and device companies from 2024 to 2025. Speaker and faculty fees make up the largest share, 67% of the total. Eli Lilly and Company paid the most, $144,630. It also lists 5 research payments totaling $9,300 from 2024 to 2025.
General payments to Dr. Hanauer by program year, 2024 to 2025
General payments to Dr. Hanauer by kind, 2024 to 2025
- Speaker and faculty fees$350,57567%
- Consulting fees$112,93522%
- Travel and lodging$31,8976%
- Honoraria$21,5914%
- Food and beverage$5,3221%
Companies that paid Dr. Hanauer the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephen B. Hanauer graduated from University of Michigan Medical School
Dr. Hanauer graduated from University of Michigan Medical School in 1973.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephen B. Hanauer'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) |
| 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. Stephen B. Hanauer
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. Stephen B. Hanauer's NPI number?
Dr. Stephen B. Hanauer's NPI number is 1992868418. It was assigned on December 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen B. Hanauer?
Dr. Stephen B. Hanauer is a gastroenterologist in Chicago, Illinois. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Stephen B. Hanauer practice?
Dr. Hanauer practices at 251 E Huron St, Chicago, IL 60611. Dr. Hanauer's primary practice is Northwestern Memorial Hospital in Chicago, Illinois, part of Northwestern Memorial HealthCare. Dmand AI also links Dr. Hanauer to 3 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Stephen B. Hanauer's office phone number?
The practice phone on file for Dr. Hanauer is (312) 926-2000.
What is Dr. Stephen B. Hanauer's medical license number?
Dr. Hanauer holds Illinois license 036057399.
Which hospitals is Dr. Stephen B. Hanauer affiliated with?
Dr. Hanauer practices at Northwestern Memorial Hospital in Chicago, Illinois. Dr. Hanauer is also affiliated with Northwestern Medicine Central DuPage Hospital. Dmand AI links Dr. Hanauer to 3 more hospitals.
What medical group is Dr. Stephen B. Hanauer part of?
Dr. Hanauer is linked to Northwestern Medical Faculty Foundation. Dmand AI links Dr. Hanauer to 1 more medical group.
Does Dr. Stephen B. Hanauer accept Medicare?
Yes. CMS data shows Dr. Hanauer billed Medicare for 355 services in 2024, and Dr. Hanauer accepts Medicare assignment.
How many Medicare patients does Dr. Stephen B. Hanauer see?
CMS counts 202 Medicare patients who saw Dr. Hanauer in 2024, with an average age of 72.
What services does Dr. Stephen B. Hanauer bill to Medicare?
In 2024, Dr. Hanauer's most billed Medicare services were office visit, established patient (99215), office visit, established patient (99214) and surgery: digestive system (45380).
Show 4 more questionsShow fewer questions
Where did Dr. Stephen B. Hanauer go to medical school?
Dr. Hanauer graduated from University of Michigan Medical School in 1973.
What drugs does Dr. Stephen B. Hanauer prescribe most?
In 2024 Medicare Part D data, Dr. Hanauer's most prescribed drugs by claims were Mesalamine, Humira(Cf) Pen and Prednisone.
Has Dr. Stephen B. Hanauer received payments from drug or device companies?
CMS Open Payments shows $522,318 in general payments to Dr. Hanauer from 17 companies from 2024 to 2025. The largest total came from Eli Lilly and Company.
How long has Dr. Stephen B. Hanauer been practicing?
Dr. Hanauer graduated from medical school in 1973, 53 years ago.
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