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Dr. Ernest M. Hoffman, PhD, DO

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Specializes in: Neurology (Brain & Spinal Cord Disease)
Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine (2011)
Professional interests include: electromyography (EMG), amyotrophic lateral sclerosis (ALS), intraoperative neurophysiological monitoring (IONM), and more.
200 1st Street Sw
Rochester, MN 55905

Dr. Ernest M. Hoffman, PhD, DO is a neurologist in Rochester, MN specializing in neurology (brain & spinal cord disease). He graduated from Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine in 2011 and has 15 years of experience. Dr. Ernest M. Hoffman, PhD, DO is affiliated with Mayo Clinic.

View Doctor's Full Profile (507) 284-2511

Office Locations

200 1st Street Sw
Rochester, MN 55905
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Rochester, MN
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Some issues Dr. Ernest M. Hoffman, PhD, DO can help you with:

Evoked Potential Test

Evoked potential tests measure the brain's response to different stimuli, namely sight, sound, or sensation. The tests are commonly done to diagnose conditions like multiple sclerosis, migraines, and tumors, such as those in the brainstem or the ear canal. At the beginning of the test, a computer will be connected to the body using wires with patches and sensors, called electrodes. In addition to measuring and recording the body's electrical responses, this machine also shows the location of any nerve damage. There are four types of evoked potential tests:

  • Visual evoked potential, which tests how the brain reacts to visual stimuli. During the test, electrodes will be applied on the scalp and patients are shown a flashing checkerboard pattern. The electrical signals the patients' brain produces in response to the pattern will be recorded. This test is able to identify issues in the optic nerve and is a helpful tool in diagnosing multiple sclerosis, as optic nerve damage is an early sign of that disease.
  • Auditory evoked potential, which measures how the brain responds to sound. In this test, the electrodes will be applied on the earlobes and on the scalp. Different sounds, such as clicks and tones, will be played through headphones, and responses to those sounds will be recorded. Aside from hearing loss in children, this test also diagnoses acoustic neuromas, which are noncancerous tumors in the ear canal that affect hearing and balance.
  • Somatosensory evoked potential, which tests how well the brain communicates with the spinal cord and the rest of the body. Faint electrical signals will be sent through electrodes that are applied on the wrist or the back of the knee. Electrodes on the scalp will measure how long it takes for the brain to receive the signals. This evoked potential test is often used to diagnose multiple sclerosis. In addition, since it can identify spinal cord issues, it may also be given to individuals who experience numbness following a spinal injury.
  • Motor evoked potential, which measures how the motor pathways function. These pathways deliver signals from the brain and spinal cord to the motor neurons, which are specialized cells directly responsible for controlling muscles. The test uses a device to send magnetic or electrical pulses to any part of the body. Patient response will show if motor neurons can adequately receive signals from the brain and spinal cord. Because this test detects communication issues in the motor pathways, it is used to diagnose multiple sclerosis, as well as to evaluate stroke recovery.

Each test takes between 30 to 60 minutes to complete, and can be done at the doctor's office. Application and removal of the electrodes do not hurt, but since they are placed on the scalp, patients should wash their hair with shampoo and avoid using conditioner or other hair products prior to the test.

Noteworthy Medicare Patient Procedures Performed by Dr. Ernest M. Hoffman, PhD, DO in 2023

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 25%

By Volume:

electrodiagnostic testing
evoked potential test

In 2013, Dr. Ernest M. Hoffman, PhD, DO performed more electrodiagnostic testing, and evoked potential test procedures for Medicare patients than 75% of providers in related specialties within Minnesota.

Medicare Procedure and Patient Information

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO.

Ethnicity
Non-Hispanic White 17
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0

Medicare Procedure and Patient Information

Medicare Procedure and Patient Information

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO.

Gender
Male 52
Female 24
Age
From 65 to 74 28
From 75 to 84 26
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO in 2015

The most common conditions of Medicare patients that Dr. Ernest M. Hoffman, PhD, DO treated during 2015 were hypertension, high cholesterol and ischemic heart disease.

Hypertension 55
High Cholesterol 45
Stroke 0
Ischemic Heart Disease 37
Depression 0
Chronic Kidney Disease 0
Asthma 0
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 0
Diabetes 0
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Ernest M. Hoffman, PhD, DO treated as a neurologist in Rochester, MN during 2016 were diagnostic procedures and evoked potential test.

Volume of procedures performed by Dr. Ernest M. Hoffman, PhD, DO for Medicare patients.

diagnostic procedures 47
doctor visit 27
evoked potential test 46

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO.

Gender
Male 87
Female 62
Ethnicity
Non-Hispanic White 138
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 73
From 75 to 84 39
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO in 2016

The most common conditions of Medicare patients that Dr. Ernest M. Hoffman, PhD, DO treated during 2016 were hypertension, high cholesterol, ischemic heart disease and depression.

Hypertension 66
High Cholesterol 62
Stroke 0
Ischemic Heart Disease 45
Depression 33
Chronic Kidney Disease 29
Asthma 15
Osteoperosis 13
Atrial Fibrilation 10
Heart Failure 21
Chronic Obstructive Pulmonary Disease 14
Diabetes 22
Dementia 10
Cancer 9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Ernest M. Hoffman, PhD, DO treated as a neurologist in Rochester, MN during 2017 were evoked potential test and diagnostic procedures.

Volume of procedures performed by Dr. Ernest M. Hoffman, PhD, DO for Medicare patients.

diagnostic procedures 101
doctor visit 56
evoked potential test 151

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO.

Gender
Male 143
Female 125
Ethnicity
Non-Hispanic White 245
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 124
From 75 to 84 79
85 and over 19
Less than 65 46

Conditions of Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO in 2017

The most common conditions of Medicare patients that Dr. Ernest M. Hoffman, PhD, DO treated during 2017 were hypertension, high cholesterol, ischemic heart disease and depression.

Hypertension 66
High Cholesterol 50
Stroke 9
Ischemic Heart Disease 37
Depression 33
Chronic Kidney Disease 32
Asthma 9
Osteoperosis 13
Atrial Fibrilation 11
Heart Failure 17
Chronic Obstructive Pulmonary Disease 18
Diabetes 25
Dementia 13
Cancer 16

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Ernest M. Hoffman, PhD, DO treated as a neurologist in Rochester, MN during 2018 were evoked potential test and diagnostic procedures.

Volume of procedures performed by Dr. Ernest M. Hoffman, PhD, DO for Medicare patients.

diagnostic procedures 182
doctor visit 74
evoked potential test 186

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO.

Gender
Male 192
Female 133
Ethnicity
Non-Hispanic White 305
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 163
From 75 to 84 94
85 and over 21
Less than 65 47

Conditions of Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO in 2018

The most common conditions of Medicare patients that Dr. Ernest M. Hoffman, PhD, DO treated during 2018 were hypertension, high cholesterol, ischemic heart disease and depression.

Hypertension 69
High Cholesterol 59
Stroke 10
Ischemic Heart Disease 37
Depression 35
Chronic Kidney Disease 31
Asthma 9
Osteoperosis 15
Atrial Fibrilation 13
Heart Failure 16
Chronic Obstructive Pulmonary Disease 13
Diabetes 27
Dementia 11
Cancer 14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Ernest M. Hoffman, PhD, DO treated as a neurologist in Rochester, MN during 2019 were evoked potential test and diagnostic procedures.

Volume of procedures performed by Dr. Ernest M. Hoffman, PhD, DO for Medicare patients.

diagnostic procedures 220
doctor visit 57
evoked potential test 260

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO.

Gender
Male 204
Female 164
Ethnicity
Non-Hispanic White 342
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 192
From 75 to 84 114
85 and over 16
Less than 65 46

Conditions of Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO in 2019

The most common conditions of Medicare patients that Dr. Ernest M. Hoffman, PhD, DO treated during 2019 were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension 70
High Cholesterol 62
Stroke 7
Ischemic Heart Disease 36
Depression 33
Chronic Kidney Disease 33
Asthma 7
Osteoperosis 13
Atrial Fibrilation 13
Heart Failure 19
Chronic Obstructive Pulmonary Disease 15
Diabetes 23
Dementia 11
Cancer 14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Ernest M. Hoffman, PhD, DO treated as a neurologist in Rochester, MN during 2020 were evoked potential test and diagnostic procedures.

Volume of procedures performed by Dr. Ernest M. Hoffman, PhD, DO for Medicare patients.

diagnostic procedures 147
doctor visit 63
evoked potential test 233

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO.

Gender
Male 164
Female 163
Ethnicity
Non-Hispanic White 298
Black 0
Hispanic 0
Asian 0
Other 18
Native American 0
Age
From 65 to 74 183
From 75 to 84 91
85 and over 19
Less than 65 34

Conditions of Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO in 2020

The most common conditions of Medicare patients that Dr. Ernest M. Hoffman, PhD, DO treated during 2020 were hypertension, high cholesterol, depression and ischemic heart disease.

Hypertension 65
High Cholesterol 57
Stroke 6
Ischemic Heart Disease 31
Depression 31
Chronic Kidney Disease 30
Asthma 10
Osteoperosis 15
Atrial Fibrilation 12
Heart Failure 16
Chronic Obstructive Pulmonary Disease 14
Diabetes 24
Dementia 15
Cancer 14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Ernest M. Hoffman, PhD, DO treated as a neurologist in Rochester, MN during 2021 were evoked potential test and diagnostic procedures.

Volume of procedures performed by Dr. Ernest M. Hoffman, PhD, DO for Medicare patients.

diagnostic procedures 117
doctor visit 36
evoked potential test 242

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO.

Gender
Male 167
Female 140
Ethnicity
Non-Hispanic White 292
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 173
From 75 to 84 75
85 and over 12
Less than 65 47

Conditions of Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO in 2021

The most common conditions of Medicare patients that Dr. Ernest M. Hoffman, PhD, DO treated during 2021 were hypertension, high cholesterol, chronic kidney disease and depression.

Hypertension 68
High Cholesterol 63
Stroke 6
Ischemic Heart Disease 28
Depression 33
Chronic Kidney Disease 35
Asthma 11
Osteoperosis 18
Atrial Fibrilation 10
Heart Failure 17
Chronic Obstructive Pulmonary Disease 12
Diabetes 29
Dementia 10
Cancer 13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Ernest M. Hoffman, PhD, DO treated as a neurologist in Rochester, MN during 2022 were evoked potential test and diagnostic procedures.

Volume of procedures performed by Dr. Ernest M. Hoffman, PhD, DO for Medicare patients.

diagnostic procedures 125
doctor visit 23
evoked potential test 209

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO.

Gender
Male 142
Female 143
Ethnicity
Non-Hispanic White 262
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 148
From 75 to 84 100
85 and over 14
Less than 65 23

Conditions of Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO in 2022

The most common conditions of Medicare patients that Dr. Ernest M. Hoffman, PhD, DO treated during 2022 were hypertension, high cholesterol, depression and chronic kidney disease.

Hypertension 73
High Cholesterol 70
Stroke 11
Ischemic Heart Disease 26
Depression 32
Chronic Kidney Disease 30
Asthma 9
Osteoperosis 22
Atrial Fibrilation 15
Heart Failure 14
Chronic Obstructive Pulmonary Disease 12
Diabetes 27
Dementia 10
Cancer 15

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Ernest M. Hoffman, PhD, DO treated as a neurologist in Rochester, MN during 2023 were evoked potential test and diagnostic procedures.

Volume of procedures performed by Dr. Ernest M. Hoffman, PhD, DO for Medicare patients.

diagnostic procedures 117
doctor visit 30
evoked potential test 231

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO.

Gender
Male 150
Female 119
Ethnicity
Non-Hispanic White 251
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 144
From 75 to 84 75
85 and over 13
Less than 65 37

Conditions of Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO in 2023

The most common conditions of Medicare patients that Dr. Ernest M. Hoffman, PhD, DO treated during 2023 were hypertension, high cholesterol, depression and ischemic heart disease.

Hypertension 75
High Cholesterol 74
Stroke 10
Ischemic Heart Disease 30
Depression 32
Chronic Kidney Disease 23
Asthma 10
Osteoperosis 25
Atrial Fibrilation 17
Heart Failure 16
Chronic Obstructive Pulmonary Disease 12
Diabetes 23
Dementia 7
Cancer 18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2013 - 2023

Volume of procedures performed by Dr. Ernest M. Hoffman, PhD, DO for Medicare patients.

The highest averages for the top procedures that Dr. Ernest M. Hoffman, PhD, DO treated as a neurologist in Rochester, MN were evoked potential test and diagnostic procedures.

diagnostic procedures 132
doctor visit 45
evoked potential test 194

Average Medicare Patient Data From 2013 - 2023

Information about Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO.

Gender
Female 107
Male 130
Ethnicity
Black / African American 0
Asian / Pacific Islander 0
Non-Hispanic White 215
Hispanic 0
Native American / Alaskan Native 0
Other 1
Age
85 and over 11
75 to 84 69
Less than 65 28
65 to 74 122

Average of Total of Conditions of Medicare patients treated by Dr. Ernest M. Hoffman, PhD, DO From 2013 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Ernest M. Hoffman, PhD, DO treated were hypertension, high cholesterol, ischemic heart disease and depression.

Hypertension 60
High Cholesterol 54
Stroke 5
Ischemic Heart Disease 30
Depression 26
Chronic Kidney Disease 24
Asthma 8
Osteoporosis 13
Heart Failure 13
Chronic Obstructive Pulmonary Disease 11
Diabetes 20
Atrial Fibrillation 10
Cancer 11
Dementia 8

Education & Training

Dr. Ernest M. Hoffman, PhD, DO graduated from Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine in 2011. He completed residency at Mayo Clinic. He is certified by the Neurology American Board of Psychiatry and Neurology and has a state license in Michigan.

Medical School: Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine (2011)

Residency: Mayo Clinic (2015)

Board Certification: Neurology American Board of Psychiatry and Neurology (2015)

Licensed In: Michigan

Affiliations & Hospitals

Dr. Ernest M. Hoffman, PhD, DO is associated with these hospitals and organizations:

Mayo Clinic

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Biography

Dr. Ernest Hoffman is a neurology (brain & spinal cord disease) specialist in Rochester, MN. His areas of expertise include the following: evoked potential test, myasthenia gravis, and intraoperative neurophysiological monitoring (IONM). He is affiliated with Mayo Clinic. After attending Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine for medical school, Dr. Hoffman completed his residency training at Mayo Clinic.

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