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Dr. Amy W. Williams, MD

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Specializes in: Adult Nephrology

Case Western Reserve University School of Medicine (1984)

Professional interests include: peritoneal dialysis, dialysis, intensive care, and more.

200 1st Street Sw
Rochester, MN 55905

(507) 284-2511

Dr. Amy W. Williams, MD is a nephrologist in Rochester, MN specializing in adult nephrology. She graduated from Case Western Reserve University School of Medicine in 1984 and has 42 years of experience. Dr. Amy W. Williams, MD is affiliated with Mayo Clinic.

Office Locations

200 1st Street Sw
Rochester, MN 55905

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Rochester, MN

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Some issues Dr. Amy W. Williams, MD can help you with:

Dialysis

Dialysis is a procedure that replicates renal (kidney) function by filtering patients' blood. When kidneys do not work properly, waste can accumulate in the blood and unbalanced chemicals can impair the body's critical functions. In order to stay healthy, a person without proper kidney function must receive dialysis. There are two forms of dialysis treatment: hemodialysis and peritoneal dialysis. Both forms of dialysis are recurring treatments that in many cases last throughout the lifetime of the affected patient. Patients who briefly lose renal function may slowly reduce the frequency of dialysis sessions until their kidneys recover. However, most patients who start on dialysis remain on dialysis for the rest of their lives or until they receive a kidney transplant.

A number of conditions can worsen renal function and lead to end-stage or acute kidney failure. When kidneys fail (i.e. nearly 90 percent of their function is lost), dialysis is typically prescribed. Conditions that cause chronic kidney failure (eventually requiring dialysis) include:

Type 1 and 2 Diabetes
Pyelonephritis, recurring kidney infection
Glomerulonephritis, inflammation of the kidney's filtering parts
Polycystic kidney disease
Interstitial nephritis, inflammation of the kidney's tubules
High blood pressure
Vesicoureteral reflux, improper bladder emptying

For hemodialysis (the more common form of dialysis), a patient will visit a hospital or clinic and be connected to a dialysis machine by a needle attached to a tube that draws blood from the arm. The drawn blood is transferred to the dialysis machine, where it is filtered and separated until clean. Waste products from the blood pass into a fluid called dialysate, which is pumped out of the machine into a waste receptacle. The machine also measures and helps ensure the blood has the appropriate level of fluid, electrolytes, and pH. A tube delivers the cleaned blood back into the patient's body. A dialysis session like this will typically last for three to four hours, with a patient undergoing dialysis around three times per week.

A second method of dialysis is known as peritoneal dialysis. Unlike hemodialysis, peritoneal dialysis can be performed at home by oneself after an initial surgery. To start, a physician (generally a surgeon) will make a small incision in the lower abdomen and insert and surgically attach a catheter (thin tube). At home, the patient connects a pump to the abdomen catheter, delivering dialysate (dialysis fluid) from a bag hanging on a wheeled stand. This fluid enters the peritoneal cavity (greater abdomen area containing the stomach, liver, and intestines) and collects waste through osmosis, where waste in the blood moves across a membrane and into the dialysate. This process continues for several hours until the fluid concentration is equal between the blood and dialysate, at which point the fluid can be drained. The fluid can then be passed through a machine called a cycler, which removes waste and allows for the dialysate to be reused. This process is repeated about four times per day. Dialysis patients must limit the amount of fluid they consume prior to receiving dialysis and should also avoid eating salty foods. The cycler cannot filter more than a certain amount of waste products from the blood.

Kidneys are important organs, and dialysis treatments are vital for those with renal dysfunction. For many, dialysis is not so much a medical procedure but a part of their normal life.

Kidney Stones

Kidney stones are hard deposits that form in the kidneys, made up of minerals that are normally present in urine. They can vary in size, from as small as a grain of sand to as large as a nickel, occasionally even larger. Sometimes they lodge in the kidney, and sometimes they break free and make their way out through the urinary tract, which can be extremely painful.

Kidney stones can be smooth or jagged and are yellow to brown in color. They are mostly comprised of the minerals calcium, oxalate, and phosphorus. Examining the stones to see what they are made of can show what caused the stone to be formed in the first place. For example, a stone made of mostly calcium, which is the most common type, can happen any time the urine becomes too concentrated due to dehydration or a blockage in the kidney. A uric acid stone forms when acid levels in the urine get too high, usually due to excessive consumption of animal protein such as meat and fish. A struvite stone is a sign of certain infections, and a cystine stone can be due to a genetic disorder that raises the risk of kidney stones.

The most common symptom of kidney stones is pain, either in the back or lower abdomen, or severe pain when urinating. There may also be blood in the urine. Treatment for kidney stones depends on how large the stone is. Very small stones can pass out of the body on their own, and they do not require treatment other than drinking adequate water and taking pain killers. Larger stones need to be broken apart and removed. The main treatment options are:

Shock wave lithotripsy, which uses sound wave vibrations to break apart the stone
Percutaneous nephrolithotomy, or the use of a very tiny tool (like a wire inserted through the back) to break apart and remove the stone
Ureteroscopy, a thin tube inserted through the urethra and bladder to the stone, where tiny tools can grasp the stone and remove

People who have had one kidney stone are at risk of developing another. To reduce this risk, patients are given instructions specific to the type of stone they developed. Generally the instructions will include drinking more water to dilute the urine, but it may also involve lowering sodium intake or eating less meat.

Peritoneal Dialysis

Peritoneal dialysis is a procedure that imitates renal (kidney) function by filtering patients' blood. When the kidneys do not work properly, waste can accumulate in the blood and unbalanced chemicals can impair the body's critical functions. In order to stay healthy, a person without proper kidney function must receive dialysis. There are two forms of dialysis treatment: hemodialysis and peritoneal dialysis. Both forms of dialysis are recurring treatments that in many cases last throughout the lifetime of the affected patient.

Peritoneal dialysis can be performed at home by oneself after an initial surgery. To start, a physician (generally a surgeon) will make a small incision in the lower abdomen and insert and surgically attach a catheter (thin tube). At home, the patient connects a pump to the abdomen catheter, delivering dialysate (dialysis fluid) from a bag hanging on a wheeled stand. This fluid enters the peritoneal cavity (greater abdomen area containing the stomach, liver, and intestines) and collects waste through osmosis, where waste in the blood moves across a membrane and into the dialysate. This process continues for several hours until the fluid concentration is equal between the blood and dialysate, at which point the fluid can be drained. The fluid can then be passed through a machine called a cycler, which removes waste and allows for the dialysate to be reused. This process is repeated about four times per day. Dialysis patients must limit the amount of fluid they consume prior to receiving dialysis and should also avoid eating salty foods. The cycler cannot filter more than a certain amount of waste products from the blood.

Kidneys are important organs, and peritoneal dialysis can be vital for those with renal dysfunction. Peritoneal dialysis may be a more convenient alternative to hemodialysis, which requires going into a clinic.

In The News (see more mentions in the news)

“Two possible choices are Dr. Prathibha Varkey, who is the president of the Mayo Clinic Health System, and Dr. Amy Williams, who is Mayo Clinic s executive dean and the chairwoman of the Department...”—"Will 2026 be Dr. Gianrico Farrugia's final year as Mayo Clinic's CEO?", Post Bulletin, January 2026

“"We can't do enough to make sure that our staff realize how important they are to our patients, for Mayo Clinic, for the community and helping us transform healthcare," said Dr. Amy Williams,...”—"Photos: Mayo Clinic All-Staff Appreciation event on Oct. 13, 2025", Post Bulletin, October 2025

“Dr. Amy W. Williams, a nephrologist and the executive dean of practice at the Mayo Clinic delivered the keynote speech at the night's event.”—"Photos: Mayo Clinic honors living donors on July 26, 2025", Post Bulletin, July 2025

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Amy W. Williams, MD treated as a nephrologist in Rochester, MN during 2012 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Amy W. Williams, MD for Medicare patients.

dialysis	72
hemofiltration	52
hospital care	170
inpatient care	170

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Amy W. Williams, MD treated as a nephrologist in Rochester, MN during 2013 were hospital care, inpatient care, hemofiltration and dialysis.

Volume of procedures performed by Dr. Amy W. Williams, MD for Medicare patients.

dialysis	23
hemofiltration	23
hospital care	175
inpatient care	175
preventive care	20
vaccines	20

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Amy W. Williams, MD.

**Gender**
Male	266
Female	189

**Ethnicity**
Non-Hispanic White	374
Black	32
Hispanic	12
Asian	13
Other	12
Native American	12

**Age**
From 65 to 74	113
From 75 to 84	73
85 and over	27
Less than 65	242

Conditions of Medicare patients treated by Dr. Amy W. Williams, MD in 2013

Hypertension	75
High Cholesterol	58
Stroke	7
Ischemic Heart Disease	55
Depression	30
Chronic Kidney Disease	75
Asthma	9
Osteoperosis	8
Atrial Fibrilation	22
Heart Failure	51
Chronic Obstructive Pulmonary Disease	17
Diabetes	51
Dementia	8
Cancer	7

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Amy W. Williams, MD treated as a nephrologist in Rochester, MN during 2014 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Amy W. Williams, MD for Medicare patients.

dialysis	56
doctor visit	13
hemofiltration	42
hospital care	180
inpatient care	180

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Amy W. Williams, MD.

**Gender**
Male	266
Female	187

**Ethnicity**
Non-Hispanic White	376
Black	31
Hispanic	0
Asian	0
Other	13
Native American	15

**Age**
From 65 to 74	145
From 75 to 84	61
85 and over	18
Less than 65	229

Conditions of Medicare patients treated by Dr. Amy W. Williams, MD in 2014

Hypertension	75
High Cholesterol	58
Stroke	6
Ischemic Heart Disease	57
Depression	26
Chronic Kidney Disease	75
Asthma	9
Osteoperosis	9
Atrial Fibrilation	23
Heart Failure	53
Chronic Obstructive Pulmonary Disease	20
Diabetes	55
Dementia	5
Cancer	6

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Amy W. Williams, MD treated as a nephrologist in Rochester, MN during 2015 were hospital care, inpatient care, hemofiltration and dialysis.

Volume of procedures performed by Dr. Amy W. Williams, MD for Medicare patients.

dialysis	39
hemofiltration	39
hospital care	196
inpatient care	196

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Amy W. Williams, MD.

**Gender**
Male	672
Female	368

**Ethnicity**
Non-Hispanic White	830
Black	80
Hispanic	24
Asian	30
Other	30
Native American	46

**Age**
From 65 to 74	294
From 75 to 84	162
85 and over	36
Less than 65	548

Conditions of Medicare patients treated by Dr. Amy W. Williams, MD in 2015

Hypertension	75
High Cholesterol	57
Stroke	5
Ischemic Heart Disease	57
Depression	31
Chronic Kidney Disease	75
Asthma	12
Osteoperosis	7
Atrial Fibrilation	21
Heart Failure	55
Chronic Obstructive Pulmonary Disease	18
Diabetes	56
Dementia	6
Cancer	8

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Amy W. Williams, MD treated as a nephrologist in Rochester, MN during 2016 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Amy W. Williams, MD for Medicare patients.

dialysis	70
hemofiltration	53
hospital care	153
inpatient care	153

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Amy W. Williams, MD.

**Gender**
Male	261
Female	179

**Ethnicity**
Non-Hispanic White	335
Black	35
Hispanic	14
Asian	26
Other	18
Native American	12

**Age**
From 65 to 74	135
From 75 to 84	0
85 and over	0
Less than 65	234

Conditions of Medicare patients treated by Dr. Amy W. Williams, MD in 2016

Hypertension	75
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	57
Depression	32
Chronic Kidney Disease	75
Asthma	18
Osteoperosis	7
Atrial Fibrilation	22
Heart Failure	54
Chronic Obstructive Pulmonary Disease	19
Diabetes	56
Dementia	10
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Amy W. Williams, MD treated as a nephrologist in Rochester, MN during 2017 were hospital care, inpatient care and dialysis.

Volume of procedures performed by Dr. Amy W. Williams, MD for Medicare patients.

dialysis	27
hospital care	115
inpatient care	115

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Amy W. Williams, MD.

**Gender**
Male	261
Female	160

**Ethnicity**
Non-Hispanic White	328
Black	33
Hispanic	0
Asian	22
Other	17
Native American	0

**Age**
From 65 to 74	118
From 75 to 84	57
85 and over	13
Less than 65	233

Conditions of Medicare patients treated by Dr. Amy W. Williams, MD in 2017

Hypertension	75
High Cholesterol	56
Stroke	6
Ischemic Heart Disease	59
Depression	31
Chronic Kidney Disease	75
Asthma	10
Osteoperosis	10
Atrial Fibrilation	19
Heart Failure	56
Chronic Obstructive Pulmonary Disease	18
Diabetes	57
Dementia	10
Cancer	6

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Amy W. Williams, MD treated as a nephrologist in Rochester, MN during 2018 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Amy W. Williams, MD for Medicare patients.

dialysis	64
hemofiltration	48
hospital care	115
inpatient care	115

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Amy W. Williams, MD.

**Gender**
Male	160
Female	99

**Ethnicity**
Non-Hispanic White	208
Black	11
Hispanic	0
Asian	13
Other	11
Native American	0

**Age**
From 65 to 74	87
From 75 to 84	0
85 and over	0
Less than 65	111

Conditions of Medicare patients treated by Dr. Amy W. Williams, MD in 2018

Hypertension	75
High Cholesterol	61
Stroke	8
Ischemic Heart Disease	63
Depression	33
Chronic Kidney Disease	75
Asthma	6
Osteoperosis	10
Atrial Fibrilation	28
Heart Failure	59
Chronic Obstructive Pulmonary Disease	21
Diabetes	61
Dementia	15
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Amy W. Williams, MD treated as a nephrologist in Rochester, MN during 2019 were hospital care and inpatient care.

Volume of procedures performed by Dr. Amy W. Williams, MD for Medicare patients.

hospital care	106
inpatient care	106

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Amy W. Williams, MD.

**Gender**
Male	77
Female	50

**Ethnicity**
Non-Hispanic White	105
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	43
From 75 to 84	0
85 and over	0
Less than 65	50

Conditions of Medicare patients treated by Dr. Amy W. Williams, MD in 2019

Hypertension	75
High Cholesterol	66
Stroke	13
Ischemic Heart Disease	66
Depression	35
Chronic Kidney Disease	75
Asthma	9
Osteoperosis	12
Atrial Fibrilation	33
Heart Failure	63
Chronic Obstructive Pulmonary Disease	25
Diabetes	59
Dementia	27
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Amy W. Williams, MD.

**Gender**
Male	22
Female	18

**Age**
From 65 to 74	13
From 75 to 84	0
85 and over	0
Less than 65	16

Conditions of Medicare patients treated by Dr. Amy W. Williams, MD in 2020

Hypertension	75
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	68
Depression	40
Chronic Kidney Disease	75
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	53
Chronic Obstructive Pulmonary Disease	0
Diabetes	70
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Amy W. Williams, MD.

**Gender**
Male	13
Female	12

Conditions of Medicare patients treated by Dr. Amy W. Williams, MD in 2021

Hypertension	75
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	68
Depression	0
Chronic Kidney Disease	75
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	64
Chronic Obstructive Pulmonary Disease	0
Diabetes	68
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Conditions of Medicare patients treated by Dr. Amy W. Williams, MD in 2022

Hypertension	75
High Cholesterol	67
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	75
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	61
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Amy W. Williams, MD for Medicare patients.

The highest averages for the top procedures that Dr. Amy W. Williams, MD treated as a nephrologist in Rochester, MN were hospital care, inpatient care, dialysis and hemofiltration.

dialysis	50
doctor visit	13
hemofiltration	42
hospital care	151
inpatient care	151
preventive care	20
vaccines	20

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Amy W. Williams, MD.

**Gender**
Male	181
Female	114

**Ethnicity**
Black / African American	20
Asian / Pacific Islander	9
Non-Hispanic White	232
Native American / Alaskan Native	7
Hispanic	4
Other	9

**Age**
75 to 84	32
85 and over	8
Less than 65	151
65 to 74	86

Average of Total of Conditions of Medicare patients treated by Dr. Amy W. Williams, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Amy W. Williams, MD treated were chronic kidney disease, hypertension, high cholesterol and diabetes.

Hypertension	68
High Cholesterol	54
Stroke	4
Ischemic Heart Disease	50
Depression	23
Chronic Kidney Disease	68
Asthma	6
Osteoporosis	5
Heart Failure	46
Chronic Obstructive Pulmonary Disease	12
Diabetes	54
Atrial Fibrillation	15
Dementia	7
Cancer	4

Education & Training

Dr. Amy W. Williams, MD graduated from Case Western Reserve University School of Medicine in 1984. She completed residency at Mayo Clinic. She is certified by the Internal Medicine American Board of Internal Medicine and has a state license in Minnesota.

Medical School: Case Western Reserve University School of Medicine (1984)

Residency: Mayo Clinic (1990)

Board Certification: Internal Medicine American Board of Internal Medicine (1987)

Licensed In: Minnesota

Affiliations & Hospitals

Dr. Amy W. Williams, MD is associated with these hospitals and organizations:

Mayo Clinic

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General Payments

These charts describe general payments received by Dr. Amy W. Williams, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
GENZYME CORPORATION	$100 AUBAGIO $100
Endo Pharmaceuticals Inc.	$15 NASCOBAL $15

**Types of Payments**
Food and Beverage	$115

Biography

Dr. Amy Williams is a medical specialist in adult nephrology. These areas are among her clinical interests: chronic kidney failure, kidney stones, and intensive care. After attending Case Western Reserve University School of Medicine and Mayo Medical School, she completed her residency training at Mayo Clinic. Dr. Williams has received professional recognition including the following: Department of Medicine Outstanding Service Award - Department of Internal Medicine; Schultz Award in Cardiology - Case Western Reserve University; and Alpha Omega Alpha - Case Western Reserve University. She is affiliated with Mayo Clinic.