Dr. Amy W. Williams, MD
- Medicare services, 2023
- 34
- Medicare patients, 2024
- 14
- Part D claims, 2024
- 30
- Industry payments
- $78
- Affiliated sites
- 2
- Practice address
- 201 Center W St, Rochester, MN 55902
- Practice phone
- Call (507) 266-7890
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mayo Clinic Hospital - Methodist Campus
Rochester, Minnesota
Find Dr. Williams' professional email, personal email and mobile number
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Dr. Amy W. Williams is a nephrologist in Rochester, Minnesota
Dr. Williams practices at Mayo Clinic Hospital - Methodist Campus in Rochester, Minnesota.
Dr. Williams' NPI, 1912978016, was assigned on January 28, 2006. Dr. Williams graduated from Mayo Medical School in 1987. Dr. Williams holds Minnesota license 29297.
- NPI
- 1912978016NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9133101157
- NPI enumeration date
- January 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (507) 266-7890
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- 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. Amy W. Williams practices at Mayo Clinic Hospital - Methodist Campus in Rochester, Minnesota
Dr. Williams' primary practice is Mayo Clinic Hospital - Methodist Campus, at 201 Center W St, Rochester, MN 55902 in Olmsted County. The practice phone is (507) 266-7890.
- Mayo Clinic Hospital - Methodist Campus201 Center W St, Rochester, MN 55902 · Olmsted CountyPhone(507) 266-7890
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Amy W. Williams is affiliated with 3 sites of care and 1 medical group
Dr. Williams' primary practice is Mayo Clinic Hospital - Methodist Campus in Rochester, Minnesota. The medical group on file is Mayo Clinic. Dmand AI also links Dr. Williams to 1 more dialysis center and 1 hospice, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Amy W. Williams' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Williams practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Hospital - Methodist Campus | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Amy W. Williams is one of 213 nephrologists in Minnesota
Nephrology is Dr. Williams' primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Williams is licensed in Minnesota.
Specialties and state licenses
- Nephrology, MinnesotaPrimary
Nephrologists near Dr. Williams
Counts of nephrologists 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. Amy W. Williams billed Medicare for 34 services in 2023
CMS data shows 34 Medicare services from Dr. Williams across 1 procedure code in 2023, for 14 Medicare patients. Medicare paid $7,480 for them. Every service was in an office.
Dr. Williams' Medicare services by type, 2022 to 2023
- 2022
- 2023
- Tests and treatments
- 2022: 732023: 3453%
Dr. Williams compared with the Minnesota median for nephrologists, 2023
- Dr. Williams
- Minnesota median
- Medicare services
- 34vs 49393% below
- Medicare patients
- 14vs 18592% below
- Part D claims
- 13vs 37297% below
Medians across 200 nephrologists in Minnesota with Dmand AI profiles that report each measure.
Dr. Williams' most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Williams?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Williams and other nephrologists in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Amy W. Williams treated 14 Medicare patients in 2024, average age 70
CMS counts 14 Medicare patients who saw Dr. Williams in 2024. 75% of them have chronic kidney disease, and 75% have high blood pressure. Their average risk score is 7.76, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Williams' median patient age at 76, with 44% women.
Chronic conditions among Dr. Williams' Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
Share of Medicare patients with each condition. A patient can have several.
Dr. Williams' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 76
Patient panel by sex, all payers
- Women44%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Amy W. Williams wrote 30 Medicare Part D claims in 2024
In 2024, Dr. Williams wrote 30 Medicare Part D claims. 87% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $176 in total drug cost.
Dr. Williams' Part D claims by kind of drug, 2024
- Generic26 claims87%
- Brand-name and other4 claims13%
Dr. Williams' most prescribed drugs by claims, 2017
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
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
How Dr. Amy W. Williams takes part in Medicare
Dr. Williams 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. Amy W. Williams received $78 in industry payments from 2017 to 2025
CMS Open Payments shows 3 general payments to Dr. Williams from 2 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $39.
General payments to Dr. Williams by program year, 2017 to 2025
Companies that paid Dr. Williams the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Amy W. Williams graduated from Mayo Medical School
Dr. Williams graduated from Mayo Medical School in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Amy W. Williams'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 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) |
| 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) |
| 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) |
| 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. Amy W. Williams
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What is Dr. Amy W. Williams' NPI number?
Dr. Amy W. Williams' NPI number is 1912978016. It was assigned on January 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Amy W. Williams?
Dr. Amy W. Williams is a nephrologist in Rochester, Minnesota. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. Amy W. Williams practice?
Dr. Williams practices at 201 Center W St, Rochester, MN 55902. Dr. Williams' primary practice is Mayo Clinic Hospital - Methodist Campus in Rochester, Minnesota. Dmand AI also links Dr. Williams to 1 dialysis center and 1 hospice.
What is Dr. Amy W. Williams' office phone number?
The practice phone on file for Dr. Williams is (507) 266-7890.
What is Dr. Amy W. Williams' medical license number?
Dr. Williams holds Minnesota license 29297.
What medical group is Dr. Amy W. Williams part of?
Dr. Williams is linked to Mayo Clinic.
Does Dr. Amy W. Williams accept Medicare?
Yes. CMS data shows Dr. Williams billed Medicare for 34 services in 2023, and Dr. Williams accepts Medicare assignment.
How many Medicare patients does Dr. Amy W. Williams see?
CMS counts 14 Medicare patients who saw Dr. Williams in 2024, with an average age of 70.
What services does Dr. Amy W. Williams bill to Medicare?
In 2023, Dr. Williams' most billed Medicare services were dialysis (90961).
Where did Dr. Amy W. Williams go to medical school?
Dr. Williams graduated from Mayo Medical School in 1987.
Show 3 more questionsShow fewer questions
What drugs does Dr. Amy W. Williams prescribe most?
In 2017 Medicare Part D data, Dr. Williams' most prescribed drugs by claims were Gabapentin.
Has Dr. Amy W. Williams received payments from drug or device companies?
CMS Open Payments shows $78 in general payments to Dr. Williams from 2 companies from 2017 to 2025. The largest total came from Stryker Corporation.
How long has Dr. Amy W. Williams been practicing?
Dr. Williams graduated from medical school in 1987, 39 years ago.
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