Dr. William Brendan Hayes, MD
- Medicare services, 2024
- 26
- Medicare patients, 2024
- 92
- Hospital affiliations
- 5
- Industry payments
- $379
- Medical groups
- 13
- Practice address
- 600 Highland Ave, Madison, WI 53792
- Practice phone
- Call (608) 265-1978
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
University Health Services - Madison (Highland Ave)
College / University Student Health · Madison, Wisconsin
Find Dr. Hayes' professional email, personal email and mobile number
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Dr. William Brendan Hayes is an anesthesiologist in Madison, Wisconsin
Dr. Hayes practices at University Health Services - Madison (Highland Ave) in Madison, Wisconsin.
Dr. Hayes' NPI, 1760433098, was assigned on May 12, 2006. Dr. Hayes graduated from University of Texas Southwestern Medical School at Dallas in 1994. Dr. Hayes holds Texas license J8572.
- NPI
- 1760433098NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9638143373
- NPI enumeration date
- May 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (608) 265-1978
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Brendan Hayes practices at University Health Services - Madison (Highland Ave) in Madison, Wisconsin
Dr. Hayes' primary practice is University Health Services - Madison (Highland Ave), at 600 Highland Ave, Madison, WI 53792. The practice phone is (608) 265-1978.
- University Health Services - Madison (Highland Ave)600 Highland Ave, Madison, WI 53792Phone(608) 265-1978
Source: Dmand AI Affiliation Data
Dr. William Brendan Hayes is affiliated with 6 sites of care and 13 medical groups
Dr. Hayes' primary practice is University Health Services - Madison (Highland Ave) in Madison, Wisconsin. Dr. Hayes is also affiliated with University Hospital. The medical group on file is UW Health. Dmand AI also links Dr. Hayes to 4 more hospitals and 12 medical groups, each named with a free account. Dr. Hayes' employer is on file too: a school & student health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Brendan Hayes' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hayes practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| University Health Services - Madison (Highland Ave) | Available with a free account |
| +5 more sites and 12 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Brendan Hayes is one of 1,001 anesthesiologists in Wisconsin
Anesthesiology is Dr. Hayes' primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dmand AI has Dr. Hayes' licenses on file in 4 states: Texas, Maine, Tennessee and Wisconsin.
Specialties and state licenses
- Anesthesiology, TexasPrimary
- Maine license
- Tennessee license
- Wisconsin license
Anesthesiologists near Dr. Hayes
Counts of anesthesiologists 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. William Brendan Hayes billed Medicare for 26 services in 2024
CMS data shows 26 Medicare services from Dr. Hayes across 2 procedure codes in 2024, for 92 Medicare patients. Medicare paid $2,274 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hayes' Medicare services by type, 2021 to 2024
- 2021
- 2024
- Anesthesia
- 2021: 142024: 2686%
Dr. Hayes compared with the Wisconsin median for anesthesiologists, 2024
- Dr. Hayes
- Wisconsin median
- Medicare services
- 26vs 4846% below
- Medicare patients
- 92vs 11923% below
Medians across 995 anesthesiologists in Wisconsin with Dmand AI profiles that report each measure.
Dr. Hayes' 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. Hayes?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hayes and other anesthesiologists in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Brendan Hayes treated 92 Medicare patients in 2024, average age 71
CMS counts 92 Medicare patients who saw Dr. Hayes in 2024. The largest group is 65 to 74, with 48 patients. 68% of them have high cholesterol, and 64% have high blood pressure. 15% are also on Medicaid. Their average risk score is 1.05, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hayes' median patient age at 62, with 58% women.
Dr. Hayes' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Hayes' Medicare patients by sex, 2024
- Women4549%
- Men4751%
Chronic conditions among Dr. Hayes' Medicare patients, 2024
- High cholesterol68%
- High blood pressure64%
- Arthritis38%
- Mood disorders38%
- Depression34%
- Anxiety29%
- Chronic kidney disease24%
- Diabetes21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hayes' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women58%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. William Brendan Hayes takes part in Medicare
Dr. Hayes accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. William Brendan Hayes received $379 in industry payments from 2016 to 2025
CMS Open Payments shows 11 general payments to Dr. Hayes from 8 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Sanofi and Genzyme US Companies paid the most, $215.
General payments to Dr. Hayes by program year, 2016 to 2025
Companies that paid Dr. Hayes 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. William Brendan Hayes graduated from University of Texas Southwestern Medical School at Dallas
Dr. Hayes graduated from University of Texas Southwestern Medical School at Dallas in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Brendan Hayes'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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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. William Brendan Hayes
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. William Brendan Hayes' NPI number?
Dr. William Brendan Hayes' NPI number is 1760433098. It was assigned on May 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Brendan Hayes?
Dr. William Brendan Hayes is an anesthesiologist in Madison, Wisconsin. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. William Brendan Hayes practice?
Dr. Hayes practices at 600 Highland Ave, Madison, WI 53792. Dr. Hayes' primary practice is University Health Services - Madison (Highland Ave) in Madison, Wisconsin. Dmand AI also links Dr. Hayes to 4 hospitals and 12 medical groups.
What is Dr. William Brendan Hayes' office phone number?
The practice phone on file for Dr. Hayes is (608) 265-1978.
What is Dr. William Brendan Hayes' medical license number?
Dr. Hayes holds Texas license J8572, one of the licenses on file in 4 states.
Which states has Dr. William Brendan Hayes been licensed in?
Dmand AI has state licenses on file for Dr. Hayes in Texas, Maine, Tennessee and Wisconsin.
Which hospitals is Dr. William Brendan Hayes affiliated with?
Dr. Hayes is affiliated with University Hospital. Dmand AI links Dr. Hayes to 4 more hospitals.
What medical group is Dr. William Brendan Hayes part of?
Dr. Hayes is linked to UW Health. Dmand AI links Dr. Hayes to 12 more medical groups.
Does Dr. William Brendan Hayes accept Medicare?
Yes. CMS data shows Dr. Hayes billed Medicare for 26 services in 2024, and Dr. Hayes accepts Medicare assignment.
How many Medicare patients does Dr. William Brendan Hayes see?
CMS counts 92 Medicare patients who saw Dr. Hayes in 2024, with an average age of 71.
Show 4 more questionsShow fewer questions
What services does Dr. William Brendan Hayes bill to Medicare?
In 2024, Dr. Hayes' most billed Medicare services were anesthesia (00103) and anesthesia (00145).
Where did Dr. William Brendan Hayes go to medical school?
Dr. Hayes graduated from University of Texas Southwestern Medical School at Dallas in 1994.
Has Dr. William Brendan Hayes received payments from drug or device companies?
CMS Open Payments shows $379 in general payments to Dr. Hayes from 8 companies from 2016 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. William Brendan Hayes been practicing?
Dr. Hayes graduated from medical school in 1994, 32 years ago.
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