Dr. Ryan Chace Williamson, MD
- Industry payments
- $64
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2022
- Practice address
- 200 1st St Sw, Rochester, MN 55905
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Medical group
Find Dr. Williamson's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Ryan Chace Williamson is a retina specialist (ophthalmology) physician in Rochester, Minnesota
Dr. Williamson practices with Mayo Clinic, a medical group.
Dr. Williamson's NPI, 1134861560, was assigned on April 7, 2022. Dr. Williamson holds Minnesota license 82168.
- NPI
- 1134861560NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3173910486
- NPI enumeration date
- April 7, 2022
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ryan Chace Williamson's practice address is in Rochester, Minnesota
Dr. Williamson's practice address in the NPI Registry is 200 1st St Sw, Rochester, MN 55905.
- NPI Registry address200 1st St Sw, Rochester, MN 55905
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ryan Chace Williamson is affiliated with 1 medical group
Dr. Williamson is part of Mayo Clinic, a medical group in Rochester, Minnesota.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ryan Chace 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 |
|---|---|
| Mayo Clinic | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Mayo Clinic and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ryan Chace Williamson is one of 23 retina specialist (ophthalmology) physicians in Minnesota
Retina specialist is Dr. Williamson's primary specialty in the NPI Registry, under taxonomy code 207WX0107X. Dr. Williamson is licensed in Minnesota.
Specialties and state licenses
- Retina specialist (ophthalmology), MinnesotaPrimary
Retina specialist (ophthalmology) physicians near Dr. Williamson
Counts of retina specialist (ophthalmology) 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. Ryan Chace Williamson's patients have a median age of 56
Across all payers, Dmand AI patient panel data puts Dr. Williamson's median patient age at 56, with 67% 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 56
Patient panel by sex, all payers
- Women67%
- Men33%
Source: Dmand AI Patient Panel Data
How Dr. Ryan Chace 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)
Dr. Ryan Chace Williamson received $64 in industry payments in 2025
CMS Open Payments shows 2 general payments to Dr. Williamson from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $64.
Companies that paid Dr. Williamson the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ryan Chace 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 |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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. Ryan Chace 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. Ryan Chace Williamson's NPI number?
Dr. Ryan Chace Williamson's NPI number is 1134861560. It was assigned on April 7, 2022, and it is active in the NPI Registry.
What kind of doctor is Dr. Ryan Chace Williamson?
Dr. Ryan Chace Williamson is a retina specialist (ophthalmology) physician in Rochester, Minnesota. The primary specialty in the NPI Registry is Retina Specialist (Ophthalmology) Physician (taxonomy code 207WX0107X).
Where does Dr. Ryan Chace Williamson practice?
Dr. Williamson practices at 200 1st St Sw, Rochester, MN 55905. Dr. Williamson's primary practice is Mayo Clinic, a medical group.
What is Dr. Ryan Chace Williamson's medical license number?
Dr. Williamson holds Minnesota license 82168.
What medical group is Dr. Ryan Chace Williamson part of?
Dr. Williamson is part of Mayo Clinic in Rochester, Minnesota.
Does Dr. Ryan Chace Williamson accept Medicare?
Yes. CMS lists Dr. Williamson as accepting Medicare assignment.
Has Dr. Ryan Chace Williamson received payments from drug or device companies?
CMS Open Payments shows $64 in general payments to Dr. Williamson from 1 company from 2025 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Ryan Chace Williamson been practicing?
Dr. Williamson's NPI was assigned in 2022.
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