Dr. Sean R. Williamson, MD
- Medicare services, 2024
- 666
- Medicare patients, 2024
- 399
- Hospital affiliations
- 6
- Industry payments
- $323
- Medical groups
- 4
- Practice address
- 9500 Euclid Avenue, Cleveland, OH 44195
- Practice phone
- Call (216) 952-9829
- 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. Sean R. Williamson is a pathologist in Cleveland, Ohio
Dr. Williamson practices at Cleveland Clinic Main Campus in Cleveland, Ohio, part of The Cleveland Clinic Foundation.
Dr. Williamson's NPI, 1386805489, was assigned on June 20, 2008. Dr. Williamson holds Indiana license 01070511A.
- NPI
- 1386805489NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9537303219
- NPI enumeration date
- June 20, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (216) 952-9829
- 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; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sean R. Williamson practices at Cleveland Clinic Main Campus in Cleveland, Ohio
Dr. Williamson's primary practice is Cleveland Clinic Main Campus, at 9500 Euclid Avenue, Cleveland, OH 44195 in Cuyahoga County. The practice phone is (216) 952-9829.
- Cleveland Clinic Main Campus9500 Euclid Avenue, Cleveland, OH 44195 · Cuyahoga CountyPhone(216) 952-9829
Source: Dmand AI Affiliation Data
Dr. Sean R. Williamson is affiliated with 8 sites of care and 4 medical groups
Dr. Williamson's primary practice is Cleveland Clinic Main Campus in Cleveland, Ohio, part of The Cleveland Clinic Foundation. Dr. Williamson is also affiliated with Medina Hospital. The medical group on file is Cleveland Clinic. Dmand AI also links Dr. Williamson to 4 more hospitals, 3 medical groups and 2 clinical labs, 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. Sean R. Williamson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williamson practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cleveland Clinic Main Campus | Available with a free account |
| +7 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Sean R. Williamson is one of 525 pathologists in Ohio
Anatomic pathology and clinical pathology is Dr. Williamson's primary specialty in the NPI Registry, under taxonomy code 207ZP0102X. Dr. Williamson is licensed in Indiana.
Specialties and state licenses
- Anatomic pathology and clinical pathology, IndianaPrimary
Pathologists near Dr. Williamson
Counts of pathologists 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. Sean R. Williamson billed Medicare for 666 services in 2024
CMS data shows 666 Medicare services from Dr. Williamson across 9 procedure codes in 2024, for 399 Medicare patients. Medicare paid $39,432 for them.
Dr. Williamson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Lab and pathology
- 2023: 7682024: 53530%
- Other services
- 2023: 1902024: 13131%
Where Dr. Williamson's Medicare services took place, 2024
- In an office233%
- In a facility64397%
Dr. Williamson compared with the Ohio median for pathologists, 2024
- Dr. Williamson
- Ohio median
- Medicare services
- 666vs 1,18544% below
- Medicare patients
- 399vs 50321% below
Medians across 571 pathologists in Ohio with Dmand AI profiles that report each measure.
Dr. Williamson'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. Williamson and other pathologists in Ohio.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Sean R. Williamson treated 399 Medicare patients in 2024, average age 73
CMS counts 399 Medicare patients who saw Dr. Williamson in 2024. The largest group is 65 to 74, with 228 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 4% are also on Medicaid. Their average risk score is 1.25, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Williamson's median patient age at 65, with 20% women.
Dr. Williamson's Medicare patients by age, 2024
Dr. Williamson's Medicare patients by sex, 2024
- Women5614%
- Men34386%
Chronic conditions among Dr. Williamson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Cancer61%
- Arthritis48%
- Ischemic heart disease37%
- Chronic kidney disease35%
- Diabetes29%
- Mood disorders23%
Share of Medicare patients with each condition. A patient can have several.
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 65
Patient panel by sex, all payers
- Women20%
- Men79%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Sean R. Williamson takes part in Medicare
Dr. Williamson 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. Sean R. Williamson received $323 in industry payments from 2017 to 2023
CMS Open Payments shows 4 general payments to Dr. Williamson from 3 drug and device companies from 2017 to 2023. Food and beverage make up the largest share, 100% of the total. Alexion Pharmaceuticals, Inc. paid the most, $121.
General payments to Dr. Williamson by program year, 2017 to 2023
General payments to Dr. Williamson by kind, 2017 to 2023
- Food and beverage$322100%
- Education$10%
Companies that paid Dr. Williamson the most, 2017 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Sean R. 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 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) |
| 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. Sean R. 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. Sean R. Williamson's NPI number?
Dr. Sean R. Williamson's NPI number is 1386805489. It was assigned on June 20, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Sean R. Williamson?
Dr. Sean R. Williamson is a pathologist in Cleveland, Ohio. The primary specialty in the NPI Registry is Anatomic Pathology & Clinical Pathology Physician (taxonomy code 207ZP0102X).
Where does Dr. Sean R. Williamson practice?
Dr. Williamson practices at 9500 Euclid Avenue, Cleveland, OH 44195. Dr. Williamson's primary practice is Cleveland Clinic Main Campus in Cleveland, Ohio, part of The Cleveland Clinic Foundation. Dmand AI also links Dr. Williamson to 4 hospitals, 3 medical groups and 2 clinical labs.
What is Dr. Sean R. Williamson's office phone number?
The practice phone on file for Dr. Williamson is (216) 952-9829.
What is Dr. Sean R. Williamson's medical license number?
Dr. Williamson holds Indiana license 01070511A.
Which hospitals is Dr. Sean R. Williamson affiliated with?
Dr. Williamson practices at Cleveland Clinic Main Campus in Cleveland, Ohio. Dr. Williamson is also affiliated with Medina Hospital. Dmand AI links Dr. Williamson to 4 more hospitals.
What medical group is Dr. Sean R. Williamson part of?
Dr. Williamson is linked to Cleveland Clinic. Dmand AI links Dr. Williamson to 3 more medical groups.
Does Dr. Sean R. Williamson accept Medicare?
Yes. CMS data shows Dr. Williamson billed Medicare for 666 services in 2024, and Dr. Williamson accepts Medicare assignment.
How many Medicare patients does Dr. Sean R. Williamson see?
CMS counts 399 Medicare patients who saw Dr. Williamson in 2024, with an average age of 73.
What services does Dr. Sean R. Williamson bill to Medicare?
In 2024, Dr. Williamson's most billed Medicare services were lab and pathology test (88305), lab and pathology test (88307) and medicare service (G0416).
Has Dr. Sean R. Williamson received payments from drug or device companies?
CMS Open Payments shows $323 in general payments to Dr. Williamson from 3 companies from 2017 to 2023. The largest total came from Alexion Pharmaceuticals, Inc.
How long has Dr. Sean R. Williamson been practicing?
Dr. Williamson graduated from medical school in 2008, 18 years ago.
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