Dr. Shawn S. Williamson, MD
- Medicare services, 2022
- 119
- Part D claims, 2024
- 200
- Hospital affiliations
- 2
- Industry payments
- $120
- Medical groups
- 6
- Practice address
- 800 Riverside Drive, Waupaca, WI 54981
- Practice phone
- Call (715) 258-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Williamson's professional email, personal email and mobile number
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Dr. Shawn S. Williamson is an emergency medicine physician in Waupaca, Wisconsin
Dr. Williamson practices at ThedaCare Medical Center-Waupaca in Waupaca, Wisconsin, part of Froedtert ThedaCare Health.
Dr. Williamson's NPI, 1386808319, was assigned on July 18, 2008. Dr. Williamson graduated from University of Wisconsin School of Medicine in 2008. Dr. Williamson holds Wisconsin license 53739-20.
- NPI
- 1386808319NPI Registry (opens in a new tab)
- NPI enumeration date
- July 18, 2008
- NPI status
- Active
- Practice phone
- (715) 258-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Shawn S. Williamson practices at ThedaCare Medical Center-Waupaca in Waupaca, Wisconsin
Dr. Williamson's primary practice is ThedaCare Medical Center-Waupaca, at 800 Riverside Drive, Waupaca, WI 54981 in Waupaca County. The practice phone is (715) 258-1000.
- ThedaCare Medical Center-Waupaca800 Riverside Drive, Waupaca, WI 54981 · Waupaca CountyPhone(715) 258-1000
Source: Dmand AI Affiliation Data
Dr. Shawn S. Williamson is affiliated with 2 sites of care and 6 medical groups
Dr. Williamson's primary practice is ThedaCare Medical Center-Waupaca in Waupaca, Wisconsin, part of Froedtert ThedaCare Health. Dr. Williamson is also affiliated with ThedaCare Medical Center-New London. The medical group on file is ThedaCare Medical Center-Waupaca. Dmand AI also links Dr. Williamson to 5 more medical groups, each named with a free account. Dr. Williamson's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Shawn S. Williamson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williamson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| ThedaCare Medical Center-Waupaca | Available with a free account |
| +1 more site and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Shawn S. Williamson is one of 1,211 emergency medicine physicians in Wisconsin
Emergency medicine is Dr. Williamson's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Williamson is licensed in Wisconsin.
Specialties and state licenses
- Emergency medicine, WisconsinPrimary
Emergency medicine physicians near Dr. Williamson
Counts of emergency medicine physicians 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. Shawn S. Williamson billed Medicare for 119 services in 2022
CMS data shows 119 Medicare services from Dr. Williamson across 3 procedure codes in 2022. Medicare paid $14,678 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Williamson's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 2642022: 11955%
Dr. Williamson compared with the Wisconsin median for emergency medicine physicians, 2022
- Dr. Williamson
- Wisconsin median
- Medicare services
- 119vs 24652% below
- Part D claims
- 67vs 5718% above
Medians across 1,249 emergency medicine physicians in Wisconsin with Dmand AI profiles that report each measure.
Dr. Williamson'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. Williamson and other emergency medicine physicians in Wisconsin.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Shawn S. Williamson's patients have a median age of 51
Across all payers, Dmand AI patient panel data puts Dr. Williamson's median patient age at 51, with 53% women.
Dr. Williamson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women53%
- Men47%
Source: Dmand AI Patient Panel Data
Dr. Shawn S. Williamson wrote 200 Medicare Part D claims in 2024
In 2024, Dr. Williamson wrote 200 Medicare Part D claims for 160 patients. 97% of them were for generic drugs. CMS names the drug for 67 of them, across 4 drugs with 11 or more claims each, at $409 in total drug cost. In 2023, CMS named 73 claims across 4 drugs.
Dr. Williamson's Part D claims by kind of drug, 2024
- Generic193 claims97%
- Brand-name and other7 claims4%
Dr. Williamson'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. Williamson's Part D claims, 2024
- Opioids17%34 of 200 claims
- Antibiotics37%74 of 200 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: 732024: 678%
Drugs named by CMS: 4 in 2024, 4 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
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Dr. Shawn S. Williamson received $120 in industry payments in 2017
CMS Open Payments shows 2 general payments to Dr. Williamson from 2 drug and device companies in 2017. Food and beverage make up the largest share, 100% of the total. Bristol-Myers Squibb Company paid the most, $109.
Companies that paid Dr. Williamson 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. Shawn S. Williamson graduated from University of Wisconsin School of Medicine
Dr. Williamson graduated from University of Wisconsin School of Medicine in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Shawn S. Williamson'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 Data |
| 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) |
| 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. Shawn S. Williamson
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. Shawn S. Williamson's NPI number?
Dr. Shawn S. Williamson's NPI number is 1386808319. It was assigned on July 18, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Shawn S. Williamson?
Dr. Shawn S. Williamson is an emergency medicine physician in Waupaca, Wisconsin. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Shawn S. Williamson practice?
Dr. Williamson practices at 800 Riverside Drive, Waupaca, WI 54981. Dr. Williamson's primary practice is ThedaCare Medical Center-Waupaca in Waupaca, Wisconsin, part of Froedtert ThedaCare Health. Dmand AI also links Dr. Williamson to 5 medical groups.
What is Dr. Shawn S. Williamson's office phone number?
The practice phone on file for Dr. Williamson is (715) 258-1000.
What is Dr. Shawn S. Williamson's medical license number?
Dr. Williamson holds Wisconsin license 53739-20.
Which hospitals is Dr. Shawn S. Williamson affiliated with?
Dr. Williamson practices at ThedaCare Medical Center-Waupaca in Waupaca, Wisconsin. Dr. Williamson is also affiliated with ThedaCare Medical Center-New London.
What medical group is Dr. Shawn S. Williamson part of?
Dr. Williamson is linked to ThedaCare Medical Center-Waupaca. Dmand AI links Dr. Williamson to 5 more medical groups.
Does Dr. Shawn S. Williamson accept Medicare?
Yes. CMS data shows Dr. Williamson billed Medicare for 119 services in 2022.
What services does Dr. Shawn S. Williamson bill to Medicare?
In 2022, Dr. Williamson's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and emergency department visit (99283).
Where did Dr. Shawn S. Williamson go to medical school?
Dr. Williamson graduated from University of Wisconsin School of Medicine in 2008.
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What drugs does Dr. Shawn S. Williamson prescribe most?
In 2024 Medicare Part D data, Dr. Williamson's most prescribed drugs by claims were Cephalexin, Hydrocodone-Acetaminophen and Prednisone.
Has Dr. Shawn S. Williamson received payments from drug or device companies?
CMS Open Payments shows $120 in general payments to Dr. Williamson from 2 companies from 2017 to 2017. The largest total came from Bristol-Myers Squibb Company.
How long has Dr. Shawn S. Williamson been practicing?
Dr. Williamson graduated from medical school in 2008, 18 years ago.
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