Dr. Stephen W. Ganshirt, MD
- Medicare services, 2024
- 411
- Medicare patients, 2024
- 317
- Part D claims, 2024
- 28
- MIPS score, 2024
- 95
- Hospital affiliations
- 1
- Practice address
- 1000 N Westmoreland Rd, Lake Forest, IL 60045
- Practice phone
- Call (847) 234-5600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northwestern Catherine Gratz Griffin Lake Forest Hospital
Lake Forest, Illinois
Find Dr. Ganshirt'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. Stephen W. Ganshirt is a general surgeon in Lake Forest, Illinois
Dr. Ganshirt practices at Northwestern Catherine Gratz Griffin Lake Forest Hospital in Lake Forest, Illinois.
Dr. Ganshirt's NPI, 1245200757, was assigned on January 25, 2006. Dr. Ganshirt graduated from Loyola University of Chicago, Stritch School of Medicine in 1989. Dr. Ganshirt holds Illinois license 036-088721.
- NPI
- 1245200757NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193913200
- NPI enumeration date
- January 25, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (847) 234-5600
- 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; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Stephen W. Ganshirt practices at Northwestern Catherine Gratz Griffin Lake Forest Hospital in Lake Forest, Illinois
Dr. Ganshirt's primary practice is Northwestern Catherine Gratz Griffin Lake Forest Hospital, at 1000 N Westmoreland Rd, Lake Forest, IL 60045 in Lake County. The practice phone is (847) 234-5600.
- Northwestern Catherine Gratz Griffin Lake Forest Hospital1000 N Westmoreland Rd, Lake Forest, IL 60045 · Lake CountyPhone(847) 234-5600
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Stephen W. Ganshirt is affiliated with 4 sites of care and 2 medical groups
Dr. Ganshirt's primary practice is Northwestern Catherine Gratz Griffin Lake Forest Hospital in Lake Forest, Illinois. Dr. Ganshirt is also affiliated with Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital. The medical group on file is Northwestern Medical Faculty Foundation. Dmand AI also links Dr. Ganshirt to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Stephen W. Ganshirt's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ganshirt practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northwestern Catherine Gratz Griffin Lake Forest Hospital | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Stephen W. Ganshirt is one of 1,217 general surgeons in Illinois
Surgery is Dr. Ganshirt's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Ganshirt is licensed in Illinois.
Specialties and state licenses
- Surgery, IllinoisPrimary
General surgeons near Dr. Ganshirt
Counts of general surgeons 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 W. Ganshirt billed Medicare for 411 services in 2024
CMS data shows 411 Medicare services from Dr. Ganshirt across 10 procedure codes in 2024, for 317 Medicare patients. Medicare paid $78,692 for them.
Dr. Ganshirt's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3442024: 3304%
- Surgery
- 2023: 682024: 8119%
Where Dr. Ganshirt's Medicare services took place, 2024
- In an office34283%
- In a facility6917%
Dr. Ganshirt compared with the Illinois median for general surgeons, 2024
- Dr. Ganshirt
- Illinois median
- Medicare services
- 411vs 1942.1 times
- Medicare patients
- 317vs 1442.2 times
- Part D claims
- 13vs 2854% below
Medians across 1,031 general surgeons in Illinois with Dmand AI profiles that report each measure.
Dr. Ganshirt'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. Ganshirt and other general surgeons in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Stephen W. Ganshirt treated 317 Medicare patients in 2024, average age 74
CMS counts 317 Medicare patients who saw Dr. Ganshirt in 2024. The largest group is 65 to 74, with 162 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 6% are also on Medicaid. Their average risk score is 1.12, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ganshirt's median patient age at 71, with 51% women.
Dr. Ganshirt's Medicare patients by age, 2024
Dr. Ganshirt's Medicare patients by sex, 2024
- Women15348%
- Men16452%
Chronic conditions among Dr. Ganshirt's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis50%
- Ischemic heart disease33%
- Cancer32%
- Diabetes23%
- Chronic kidney disease21%
- Anxiety19%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ganshirt's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women51%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Stephen W. Ganshirt wrote 28 Medicare Part D claims in 2024
In 2024, Dr. Ganshirt wrote 28 Medicare Part D claims for 16 patients. 100% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $70 in total drug cost. In 2019, CMS named 12 claims across 1 drug.
Dr. Ganshirt's most prescribed drugs by claims, 2023
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. Ganshirt's Part D claims, 2024
- Antibiotics54%15 of 28 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, 2019 to 2023
- 2019
- 2023
- Claims for drugs CMS names
- 2019: 122023: 138%
Drugs named by CMS: 1 in 2023, 1 in 2019.
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 W. Ganshirt scored 95 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Ganshirt for performance year 2024, reported through an alternative payment model (APM). Dr. Ganshirt accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 53 procedures of hernia repair - groin (open) by Dr. Ganshirt, more than 99% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Ganshirt's MIPS scores, performance year 2024
- 95of 100Final score
- 83of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Ganshirt ranks in Medicare procedure volume
- Hernia repair - groin (open)
- 99th percentile53 procedures
- Mastectomy
- 78th percentile20 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Stephen W. Ganshirt received $488 in industry payments from 2017 to 2025
CMS Open Payments shows 7 general payments to Dr. Ganshirt from 2 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Davol Inc. paid the most, $473.
General payments to Dr. Ganshirt by program year, 2017 to 2025
Companies that paid Dr. Ganshirt the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Stephen W. Ganshirt graduated from Loyola University of Chicago, Stritch School of Medicine
Dr. Ganshirt graduated from Loyola University of Chicago, Stritch School of Medicine in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Stephen W. Ganshirt'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 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)Clinician Public Reporting: Overall MIPS Performance (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 W. Ganshirt
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 W. Ganshirt's NPI number?
Dr. Stephen W. Ganshirt's NPI number is 1245200757. It was assigned on January 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Stephen W. Ganshirt?
Dr. Stephen W. Ganshirt is a general surgeon in Lake Forest, Illinois. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Stephen W. Ganshirt practice?
Dr. Ganshirt practices at 1000 N Westmoreland Rd, Lake Forest, IL 60045. Dr. Ganshirt's primary practice is Northwestern Catherine Gratz Griffin Lake Forest Hospital in Lake Forest, Illinois. Dmand AI also links Dr. Ganshirt to 2 group practices and clinics and 1 medical group.
What is Dr. Stephen W. Ganshirt's office phone number?
The practice phone on file for Dr. Ganshirt is (847) 234-5600.
What is Dr. Stephen W. Ganshirt's medical license number?
Dr. Ganshirt holds Illinois license 036-088721.
Which hospitals is Dr. Stephen W. Ganshirt affiliated with?
Dr. Ganshirt is affiliated with Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital.
What medical group is Dr. Stephen W. Ganshirt part of?
Dr. Ganshirt is linked to Northwestern Medical Faculty Foundation. Dmand AI links Dr. Ganshirt to 1 more medical group.
Does Dr. Stephen W. Ganshirt accept Medicare?
Yes. CMS data shows Dr. Ganshirt billed Medicare for 411 services in 2024, and Dr. Ganshirt accepts Medicare assignment.
What is Dr. Stephen W. Ganshirt's MIPS score?
Dr. Ganshirt's MIPS final score for performance year 2024 is 95 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Stephen W. Ganshirt see?
CMS counts 317 Medicare patients who saw Dr. Ganshirt in 2024, with an average age of 74.
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What services does Dr. Stephen W. Ganshirt bill to Medicare?
In 2024, Dr. Ganshirt's most billed Medicare services were office visit, new patient (99205), office visit, established patient (99214) and surgery: digestive system (49505).
Where did Dr. Stephen W. Ganshirt go to medical school?
Dr. Ganshirt graduated from Loyola University of Chicago, Stritch School of Medicine in 1989.
What drugs does Dr. Stephen W. Ganshirt prescribe most?
In 2023 Medicare Part D data, Dr. Ganshirt's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. Stephen W. Ganshirt received payments from drug or device companies?
CMS Open Payments shows $488 in general payments to Dr. Ganshirt from 2 companies from 2017 to 2025. The largest total came from Davol Inc.
How long has Dr. Stephen W. Ganshirt been practicing?
Dr. Ganshirt graduated from medical school in 1989, 37 years ago.
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