Dr. William S. Mondzac, MD
- Medicare services, 2022
- 78
- Medicare patients, 2024
- 11
- MIPS score, 2024
- 82
- Industry payments
- $107
- Affiliated sites
- 1
- Practice address
- 1101 Madison St, Seattle, WA 98104
- Practice phone
- Call (206) 320-7750
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
First Hill Surgery Center
Seattle, Washington
Find Dr. Mondzac's professional email, personal email and mobile number
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Dr. William S. Mondzac is an anesthesiologist in Seattle, Washington
Dr. Mondzac practices at First Hill Surgery Center in Seattle, Washington.
Dr. Mondzac's NPI, 1033262464, was assigned on January 19, 2007. Dr. Mondzac graduated from Georgetown University School of Medicine in 1987. Dr. Mondzac holds Washington license MD00031202.
- NPI
- 1033262464NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305030180
- NPI enumeration date
- January 19, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (206) 320-7750
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William S. Mondzac practices at First Hill Surgery Center in Seattle, Washington
Dr. Mondzac's primary practice is First Hill Surgery Center, at 1101 Madison St, Seattle, WA 98104 in King County. The practice phone is (206) 320-7750.
- First Hill Surgery Center1101 Madison St, Seattle, WA 98104 · King CountyPhone(206) 320-7750
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William S. Mondzac is affiliated with 2 sites of care and 1 medical group
Dr. Mondzac's primary practice is First Hill Surgery Center in Seattle, Washington. The medical group on file is U.S. Anesthesia Partners of Washington. Dmand AI also links Dr. Mondzac to 1 more group practice or clinic, 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. William S. Mondzac's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mondzac practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| First Hill Surgery Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William S. Mondzac is one of 1,332 anesthesiologists in Washington
Anesthesiology is Dr. Mondzac's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Mondzac is licensed in Washington.
Specialties and state licenses
- Anesthesiology, WashingtonPrimary
Anesthesiologists near Dr. Mondzac
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 S. Mondzac billed Medicare for 78 services in 2022
CMS data shows 78 Medicare services from Dr. Mondzac across 3 procedure codes in 2022, for 11 Medicare patients. Medicare paid $2,882 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Mondzac's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Imaging
- 2021: 472022: 446%
- Surgery
- 2021: 452022: 3424%
Dr. Mondzac compared with the Washington median for anesthesiologists, 2022
- Dr. Mondzac
- Washington median
- Medicare services
- 78vs 4190% above
- Medicare patients
- 11vs 10790% below
Medians across 1,312 anesthesiologists in Washington with Dmand AI profiles that report each measure.
Dr. Mondzac's most billed Medicare procedure codes, 2022
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. Mondzac and other anesthesiologists in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William S. Mondzac treated 11 Medicare patients in 2024, average age 76
CMS counts 11 Medicare patients who saw Dr. Mondzac in 2024. The largest group is under 65, with 0 patients. Their average risk score is 0.66, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Mondzac's median patient age at 63, with 57% women.
Dr. Mondzac's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Mondzac's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 63
Patient panel by sex, all payers
- Women57%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William S. Mondzac scored 82 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 82 out of 100 for Dr. Mondzac for performance year 2024, reported as part of a group. Dr. Mondzac accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Mondzac's MIPS scores, performance year 2024
- 82of 100Final score
- 80.9of 100Quality
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. William S. Mondzac received $107 in industry payments in 2017
CMS Open Payments shows 1 general payment to Dr. Mondzac from 1 drug or device company in 2017. Food and beverage make up the largest share, 100% of the total. Halyard Health, Inc. paid the most, $107.
Companies that paid Dr. Mondzac the most, 2017 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William S. Mondzac graduated from Georgetown University School of Medicine
Dr. Mondzac graduated from Georgetown University School of Medicine in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William S. Mondzac'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) |
| 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) |
| 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 S. Mondzac
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 S. Mondzac's NPI number?
Dr. William S. Mondzac's NPI number is 1033262464. It was assigned on January 19, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. William S. Mondzac?
Dr. William S. Mondzac is an anesthesiologist in Seattle, Washington. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. William S. Mondzac practice?
Dr. Mondzac practices at 1101 Madison St, Seattle, WA 98104. Dr. Mondzac's primary practice is First Hill Surgery Center in Seattle, Washington. Dmand AI also links Dr. Mondzac to 1 group practice or clinic.
What is Dr. William S. Mondzac's office phone number?
The practice phone on file for Dr. Mondzac is (206) 320-7750.
What is Dr. William S. Mondzac's medical license number?
Dr. Mondzac holds Washington license MD00031202.
What medical group is Dr. William S. Mondzac part of?
Dr. Mondzac is linked to U.S. Anesthesia Partners of Washington.
Does Dr. William S. Mondzac accept Medicare?
Yes. CMS data shows Dr. Mondzac billed Medicare for 78 services in 2022, and Dr. Mondzac accepts Medicare assignment.
What is Dr. William S. Mondzac's MIPS score?
Dr. Mondzac's MIPS final score for performance year 2024 is 82 out of 100, reported as part of a group.
How many Medicare patients does Dr. William S. Mondzac see?
CMS counts 11 Medicare patients who saw Dr. Mondzac in 2024, with an average age of 76.
What services does Dr. William S. Mondzac bill to Medicare?
In 2022, Dr. Mondzac's most billed Medicare services were ultrasound (76942), surgery: brain, spine and nerves (64448) and surgery: brain, spine and nerves (64415).
Show 3 more questionsShow fewer questions
Where did Dr. William S. Mondzac go to medical school?
Dr. Mondzac graduated from Georgetown University School of Medicine in 1987.
Has Dr. William S. Mondzac received payments from drug or device companies?
CMS Open Payments shows $107 in general payments to Dr. Mondzac from 1 company from 2017 to 2017. The largest total came from Halyard Health, Inc.
How long has Dr. William S. Mondzac been practicing?
Dr. Mondzac graduated from medical school in 1987, 39 years ago.
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