Surg Clin North Am
CholecystectomyCholecystectomy, LaparoscopicGallstones
Dr. Ethan Williamson, MD
NPI1417687179
- Part D claims, 2026
- 27
- Publications
- 1
- Industry payments
- $717
- State license
- 1
- Year NPI issued
- 2022
- Practice address
- 1 Hospital Dr, Columbia, MO 65201
- Practice phone
- Call (573) 884-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Williamson's professional email, personal email and mobile number
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Dr. Ethan Williamson is a general surgeon in Columbia, Missouri
Dr. Williamson practices in Columbia, Missouri.
Dr. Williamson's NPI, 1417687179, was assigned on June 15, 2022. Dr. Williamson holds Missouri license 2022021144.
NPI and contact details
- NPI
- 1417687179NPI Registry (opens in a new tab)
- NPI enumeration date
- June 15, 2022
- NPI status
- Active
- Practice phone
- (573) 884-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Ethan Williamson's practice address is in Columbia, Missouri
Dr. Williamson's practice address in the NPI Registry is 1 Hospital Dr, Columbia, MO 65201, in Boone County. The practice phone is (573) 884-2000.
- NPI Registry address1 Hospital Dr, Columbia, MO 65201 · Boone CountyPhone(573) 884-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Ethan Williamson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williamson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Williamson's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ethan Williamson is one of 593 general surgeons in Missouri
Surgery is Dr. Williamson's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Williamson is licensed in Missouri.
Specialties and state licenses
- Surgery, MissouriPrimary
General surgeons near Dr. Williamson
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. Ethan Williamson's patients have a median age of 67
Across all payers, Dmand AI patient panel data puts Dr. Williamson's median patient age at 67, with 20% 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 67
Patient panel by sex, all payers
- Women20%
- Men80%
Source: Dmand AI Patient Panel Data
Dr. Ethan Williamson wrote 27 Medicare Part D claims in 2026
In 2026, Dr. Williamson wrote 27 Medicare Part D claims for 21 patients. 100% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $23 in total drug cost. In 2023, CMS named 18 claims across 1 drug.
Part D claims, 202627
Drugs named by CMS1
Total drug cost$23
Part D patients21
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, 2026
- Opioids59%16 of 27 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: 182024: 1422%
Drugs named by CMS: 1 in 2024, 1 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), 2026 data
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Dr. Ethan Williamson has 1 publication on record
Dmand AI links 1 paper to Dr. Williamson in 2024. Dr. Williamson's most frequent co-author is Amy Ema Liepert, MD.
Papers1
Dr. Williamson's most frequent co-authors
Recent publications by Dr. Williamson
See who Dr. Williamson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Williamson works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ethan Williamson received $717 in industry payments from 2022 to 2024
CMS Open Payments shows 7 general payments to Dr. Williamson from 6 drug and device companies from 2022 to 2024. Food and beverage make up the largest share, 57% of the total. Medical Device Business Services, Inc. paid the most, $305.
General payments to Dr. Williamson by program year, 2022 to 2024
General payments to Dr. Williamson by kind, 2022 to 2024
$717in total
- Food and beverage$41257%
- Education$30543%
Companies that paid Dr. Williamson the most, 2022 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ethan 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| 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) |
| 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) |
| 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. Ethan 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. Ethan Williamson's NPI number?
Dr. Ethan Williamson's NPI number is 1417687179. It was assigned on June 15, 2022, and it is active in the NPI Registry.
What kind of doctor is Dr. Ethan Williamson?
Dr. Ethan Williamson is a general surgeon in Columbia, Missouri. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Ethan Williamson practice?
Dr. Williamson practices at 1 Hospital Dr, Columbia, MO 65201.
What is Dr. Ethan Williamson's office phone number?
The practice phone on file for Dr. Williamson is (573) 884-2000. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. Ethan Williamson's email address?
Dmand AI checks professional and personal email addresses for Dr. Williamson through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. Ethan Williamson's medical license number?
Dr. Williamson holds Missouri license 2022021144.
What drugs does Dr. Ethan Williamson prescribe most?
In 2024 Medicare Part D data, Dr. Williamson's most prescribed drugs by claims were Oxycodone HCl.
Has Dr. Ethan Williamson received payments from drug or device companies?
CMS Open Payments shows $717 in general payments to Dr. Williamson from 6 companies from 2022 to 2024. The largest total came from Medical Device Business Services, Inc.
How long has Dr. Ethan Williamson been practicing?
Dr. Williamson's NPI was assigned in 2022.
Does Dr. Ethan Williamson do research?
Dmand AI links 1 publication to Dr. Williamson.
Who does Dr. Ethan Williamson publish with?
Dr. Williamson's most frequent co-authors are Amy Ema Liepert, MD (1 shared paper).
What EHR does Dr. Ethan Williamson's practice use?
Dmand AI tracks the EHR system at Dr. Williamson's practice. The vendor and product are available with a free Dmand AI account.
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