Neurosurgery
Academic Medical CentersBrain DiseasesChicago
Dr. Shaun Thomas O'Leary, MD, PhD
NPI1841256377PAC ID8123003365
- Medicare services, 2024
- 829
- Medicare patients, 2024
- 120
- Part D claims, 2024
- 125
- Publications
- 1
- Hospital affiliations
- 1
- Practice address
- 2414 Kohler Memorial Dr, Sheboygan, WI 53081
- Practice phone
- Call (877) 576-3544
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Aurora Medical Group, Inc.
Sheboygan, Wisconsin
Find Dr. O'Leary'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. Shaun Thomas O'Leary is a neurosurgeon in Sheboygan, Wisconsin
Dr. O'Leary practices at Aurora Medical Group, Inc. in Sheboygan, Wisconsin.
Dr. O'Leary's NPI, 1841256377, was assigned on April 24, 2006. Dr. O'Leary graduated from Georgetown University School of Medicine in 1996. Dr. O'Leary holds Wisconsin license 1242.
NPI and contact details
- NPI
- 1841256377NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8123003365
- NPI enumeration date
- April 24, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (877) 576-3544
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Shaun Thomas O'Leary practices at Aurora Medical Group, Inc. in Sheboygan, Wisconsin
Dr. O'Leary's primary practice is Aurora Medical Group, Inc., at 2414 Kohler Memorial Dr, Sheboygan, WI 53081 in Sheboygan County. The practice phone is (877) 576-3544.
- Aurora Medical Group, Inc.2414 Kohler Memorial Dr, Sheboygan, WI 53081 · Sheboygan CountyPhone(877) 576-3544
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Shaun Thomas O'Leary is affiliated with 5 sites of care and 3 medical groups
Dr. O'Leary's primary practice is Aurora Medical Group, Inc. in Sheboygan, Wisconsin. Dr. O'Leary is also affiliated with Aurora Medical Center - Kenosha. The medical group on file is Aurora Medical Group. Dmand AI also links Dr. O'Leary to 3 more group practices and clinics and 2 medical groups, each named with a free account.
Aurora Medical Group, Inc.Primary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Shaun Thomas O'Leary's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Leary practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Aurora Medical Group, Inc. | Available with a free account |
| +4 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Shaun Thomas O'Leary is one of 136 neurosurgeons in Wisconsin
Neurological surgery is Dr. O'Leary's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dmand AI has Dr. O'Leary's licenses on file in 2 states: Wisconsin and Illinois.
Specialties and state licenses
- Neurological surgery, WisconsinPrimary
- Illinois license
Neurosurgeons near Dr. O'Leary
Counts of neurosurgeons with a Dmand AI profile, by place and practice. Each opens the list.
136neurosurgeons in Wisconsin
2neurosurgeons in Sheboygan
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Shaun Thomas O'Leary billed Medicare for 829 services in 2024
CMS data shows 829 Medicare services from Dr. O'Leary across 7 procedure codes in 2024, for 120 Medicare patients. Medicare paid $41,152 for them.
Medicare services, 2024829
Medicare patients120
Paid by Medicare$41,152
Procedure codes7
Dr. O'Leary's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 5962024: 69116%
- Office and hospital visits
- 2023: 1882024: 10743%
- Surgery
- 2023: 392024: 3121%
Where Dr. O'Leary's Medicare services took place, 2024
- In an office79896%
- In a facility314%
Dr. O'Leary compared with the Wisconsin median for neurosurgeons, 2024
- Dr. O'Leary
- Wisconsin median
- Medicare services
- 829vs 1157.2 times
- Medicare patients
- 120vs 10811% above
- Part D claims
- 92vs 234.0 times
Medians across 123 neurosurgeons in Wisconsin with Dmand AI profiles that report each measure.
Dr. O'Leary'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. O'Leary and other neurosurgeons in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Shaun Thomas O'Leary treated 120 Medicare patients in 2024, average age 73
CMS counts 120 Medicare patients who saw Dr. O'Leary in 2024. The largest group is 65 to 74, with 55 patients. 75% of them have arthritis, and 75% have high blood pressure. 9% are also on Medicaid. Their average risk score is 1.34, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. O'Leary's median patient age at 66, with 54% women.
Medicare patients, 2024120
Average age73
Average risk score1.34
Also on Medicaid9%
Dr. O'Leary's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. O'Leary's Medicare patients by sex, 2024
- Women6050%
- Men6050%
Chronic conditions among Dr. O'Leary's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Anxiety32%
- Chronic kidney disease32%
- Ischemic heart disease32%
- Mood disorders30%
- Depression28%
Share of Medicare patients with each condition. A patient can have several.
Dr. O'Leary's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Shaun Thomas O'Leary wrote 125 Medicare Part D claims in 2024
In 2024, Dr. O'Leary wrote 125 Medicare Part D claims for 57 patients. 100% of them were for generic drugs. CMS names the drug for 92 of them, across 1 drug with 11 or more claims each, at $476 in total drug cost. In 2023, CMS named 81 claims across 2 drugs.
Part D claims, 2024125
Drugs named by CMS1
Total drug cost$476
Part D patients57
Dr. O'Leary'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. O'Leary's Part D claims, 2024
- Opioids78%98 of 125 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: 812024: 9214%
Drugs named by CMS: 1 in 2024, 2 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. Shaun Thomas O'Leary takes part in Medicare
Dr. O'Leary accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Laminectomy or laminotomy (partial removal of spine bones): 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. Shaun Thomas O'Leary has 1 publication on record
Dmand AI links 1 paper to Dr. O'Leary. Dr. O'Leary's most frequent co-authors are Tibor Boco, MD, Richard W. Byrne, MD and Kirk W. Jobe, MD.
Papers1
Dr. O'Leary's most frequent co-authors
Recent publications by Dr. O'Leary
See who Dr. O'Leary researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. O'Leary works with, so you can find a warm path to the right neurosurgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Shaun Thomas O'Leary received $11,512 in industry payments from 2016 to 2025
CMS Open Payments shows 143 general payments to Dr. O'Leary from 35 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 59% of the total. Stryker Corporation paid the most, $1,745.
General payments to Dr. O'Leary by program year, 2016 to 2025
General payments to Dr. O'Leary by kind, 2016 to 2025
$11.5Kin total
- Food and beverage$6,82259%
- Travel and lodging$4,54539%
- Education$1451%
Companies that paid Dr. O'Leary 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. Shaun Thomas O'Leary graduated from Georgetown University School of Medicine
Dr. O'Leary graduated from Georgetown University School of Medicine in 1996.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Shaun Thomas O'Leary'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)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 |
| 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. Shaun Thomas O'Leary
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. Shaun Thomas O'Leary's NPI number?
Dr. Shaun Thomas O'Leary's NPI number is 1841256377. It was assigned on April 24, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Shaun Thomas O'Leary?
Dr. Shaun Thomas O'Leary is a neurosurgeon in Sheboygan, Wisconsin. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).
Where does Dr. Shaun Thomas O'Leary practice?
Dr. O'Leary practices at 2414 Kohler Memorial Dr, Sheboygan, WI 53081. Dr. O'Leary's primary practice is Aurora Medical Group, Inc. in Sheboygan, Wisconsin. Dmand AI also links Dr. O'Leary to 3 group practices and clinics and 2 medical groups.
What is Dr. Shaun Thomas O'Leary's office phone number?
The practice phone on file for Dr. O'Leary is (877) 576-3544.
What is Dr. Shaun Thomas O'Leary's medical license number?
Dr. O'Leary holds Wisconsin license 1242, one of the licenses on file in 2 states.
Which states has Dr. Shaun Thomas O'Leary been licensed in?
Dmand AI has state licenses on file for Dr. O'Leary in Wisconsin and Illinois.
Which hospitals is Dr. Shaun Thomas O'Leary affiliated with?
Dr. O'Leary is affiliated with Aurora Medical Center - Kenosha.
What medical group is Dr. Shaun Thomas O'Leary part of?
Dr. O'Leary is linked to Aurora Medical Group. Dmand AI links Dr. O'Leary to 2 more medical groups.
Does Dr. Shaun Thomas O'Leary accept Medicare?
Yes. CMS data shows Dr. O'Leary billed Medicare for 829 services in 2024, and Dr. O'Leary accepts Medicare assignment.
How many Medicare patients does Dr. Shaun Thomas O'Leary see?
CMS counts 120 Medicare patients who saw Dr. O'Leary in 2024, with an average age of 73.
Show 7 more questionsShow fewer questions
What services does Dr. Shaun Thomas O'Leary bill to Medicare?
In 2024, Dr. O'Leary's most billed Medicare services were medical service (97810), medical service (97811) and office visit, established patient (99214).
Where did Dr. Shaun Thomas O'Leary go to medical school?
Dr. O'Leary graduated from Georgetown University School of Medicine in 1996.
What drugs does Dr. Shaun Thomas O'Leary prescribe most?
In 2024 Medicare Part D data, Dr. O'Leary's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. Shaun Thomas O'Leary received payments from drug or device companies?
CMS Open Payments shows $11,512 in general payments to Dr. O'Leary from 35 companies from 2016 to 2025. The largest total came from Stryker Corporation.
How long has Dr. Shaun Thomas O'Leary been practicing?
Dr. O'Leary graduated from medical school in 1996, 30 years ago.
Does Dr. Shaun Thomas O'Leary do research?
Dmand AI links 1 publication to Dr. O'Leary.
Who does Dr. Shaun Thomas O'Leary publish with?
Dr. O'Leary's most frequent co-authors are Tibor Boco, MD (1 shared paper), Richard W. Byrne, MD (1 shared paper) and Kirk W. Jobe, MD (1 shared paper).
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