i
Loading Page
loading, please wait

Select Year:

Home > CA Providers > General Practitioners
placeholder image of provider

Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine

Accepting New Patients
(Dr. Nerissa U. Ko, MD)
Specializes in: Psychiatry & Neurology, General Practice and Neurology (Brain & Spinal Cord Disease)
University of Hawaii at Manoa, John A. Burns School of Medicine
3100 San Pablo Avenue
Berkeley, CA 94702

Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine is a null in San Francisco, CA specializing in psychiatry & neurology, general practice and neurology (brain & spinal cord disease). She graduated from University of Hawaii at Manoa, John A. Burns School of Medicine. Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine is affiliated with UCSF Health, UCSF Medical Group, UCSF Benioff Children's Hospitals, Hill Physicians, UCSF DEPT OF SURGERY, Stroke Clinic and UNIVERSITY ANESTHESIA MEDICAL GROUP.

View Doctor's Full Profile (415) 855-3882

Office Locations

185 Berry Street Suite 180
San Francisco, CA 94107
open_in_new
400 Parnassus Avenue Eighth Floor
San Francisco, CA 94143
open_in_new
1100 Park Place Suite 100
San Mateo, CA 94403
open_in_new
185 Berry Street Suite 180, Lobby 6
San Francisco, CA 94107
open_in_new
400 Parnassus Avenue Floor 8
San Francisco, CA 94143
open_in_new

Hill Physicians

3100 San Pablo Avenue
Berkeley, CA 94702
(415) 855-3882
open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine in 2023

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

Top 5%

By Affordability:

carotid duplex ultrasound
carotid ultrasound
duplex ultrasound

In 2023, Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine had a list price for carotid duplex ultrasound, carotid ultrasound, and duplex ultrasound that was lower than the list prices billed to Medicare by 95% of providers in related specialties within California. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 10%

By Volume:

carotid duplex ultrasound

By Affordability:

vascular ultrasound

In 2023, among providers in related specialties within California, Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine performed more carotid duplex ultrasound procedures for Medicare patients than 90% of them and she also had a list price for vascular ultrasound that was lower than the list prices billed to Medicare by 90% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 25%

By Volume:

vascular procedures
vascular ultrasound

By Affordability:

vascular studies

In 2012, among providers in related specialties within California, Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine performed more vascular procedures, and vascular ultrasound procedures for Medicare patients than 75% of them and she also had a list price for vascular studies that was lower than the list prices billed to Medicare by 75% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine treated as a null in San Francisco, CA during 2012 were ultrasound (sonogram), vascular procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine for Medicare patients.

doctor visit 44
hospital care 39
inpatient care 39
ultrasound (sonogram) 166
vascular procedures 166

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine treated as a null in San Francisco, CA during 2013 were ultrasound (sonogram), vascular procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine for Medicare patients.

doctor visit 84
hospital care 83
inpatient care 83
ultrasound (sonogram) 178
vascular procedures 178

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine.

Gender
Male 151
Female 147
Ethnicity
Non-Hispanic White 171
Black 19
Hispanic 31
Asian 64
Other 13
Native American 0
Age
From 65 to 74 119
From 75 to 84 77
85 and over 63
Less than 65 39

Conditions of Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine in 2013

Hypertension 75
High Cholesterol 72
Stroke 56
Ischemic Heart Disease 49
Depression 20
Chronic Kidney Disease 39
Asthma 7
Osteoperosis 10
Atrial Fibrilation 20
Heart Failure 30
Chronic Obstructive Pulmonary Disease 14
Diabetes 39
Dementia 16
Cancer 10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine treated as a null in San Francisco, CA during 2014 were ultrasound (sonogram), vascular procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine for Medicare patients.

doctor visit 71
hospital care 51
inpatient care 51
ultrasound (sonogram) 131
vascular procedures 131

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine.

Gender
Male 121
Female 130
Ethnicity
Non-Hispanic White 160
Black 0
Hispanic 18
Asian 50
Other 0
Native American 0
Age
From 65 to 74 91
From 75 to 84 90
85 and over 38
Less than 65 32

Conditions of Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine in 2014

Hypertension 75
High Cholesterol 72
Stroke 56
Ischemic Heart Disease 49
Depression 26
Chronic Kidney Disease 40
Asthma 9
Osteoperosis 10
Atrial Fibrilation 24
Heart Failure 25
Chronic Obstructive Pulmonary Disease 17
Diabetes 36
Dementia 19
Cancer 16

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine treated as a null in San Francisco, CA during 2015 were ultrasound (sonogram), vascular procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine for Medicare patients.

doctor visit 47
hospital care 62
inpatient care 62
ultrasound (sonogram) 150
vascular procedures 150

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine.

Gender
Male 236
Female 304
Ethnicity
Non-Hispanic White 330
Black 60
Hispanic 28
Asian 98
Other 0
Native American 0
Age
From 65 to 74 248
From 75 to 84 160
85 and over 72
Less than 65 60

Conditions of Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine in 2015

Hypertension 75
High Cholesterol 73
Stroke 51
Ischemic Heart Disease 49
Depression 34
Chronic Kidney Disease 36
Asthma 16
Osteoperosis 12
Atrial Fibrilation 21
Heart Failure 30
Chronic Obstructive Pulmonary Disease 17
Diabetes 44
Dementia 14
Cancer 13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine treated as a null in San Francisco, CA during 2016 were ultrasound (sonogram), vascular procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine for Medicare patients.

doctor visit 48
hospital care 66
inpatient care 66
ultrasound (sonogram) 97
vascular procedures 97

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine.

Gender
Male 105
Female 121
Ethnicity
Non-Hispanic White 153
Black 16
Hispanic 0
Asian 34
Other 0
Native American 0
Age
From 65 to 74 90
From 75 to 84 62
85 and over 42
Less than 65 32

Conditions of Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine in 2016

Hypertension 75
High Cholesterol 66
Stroke 49
Ischemic Heart Disease 44
Depression 35
Chronic Kidney Disease 43
Asthma 27
Osteoperosis 9
Atrial Fibrilation 27
Heart Failure 31
Chronic Obstructive Pulmonary Disease 24
Diabetes 32
Dementia 25
Cancer 12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine treated as a null in San Francisco, CA during 2017 were ultrasound (sonogram), vascular procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine for Medicare patients.

doctor visit 73
hospital care 82
inpatient care 82
ultrasound (sonogram) 86
vascular procedures 86

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine.

Gender
Male 106
Female 104
Ethnicity
Non-Hispanic White 129
Black 0
Hispanic 17
Asian 43
Other 0
Native American 0
Age
From 65 to 74 74
From 75 to 84 74
85 and over 21
Less than 65 41

Conditions of Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine in 2017

Hypertension 75
High Cholesterol 60
Stroke 45
Ischemic Heart Disease 52
Depression 33
Chronic Kidney Disease 52
Asthma 15
Osteoperosis 13
Atrial Fibrilation 23
Heart Failure 35
Chronic Obstructive Pulmonary Disease 20
Diabetes 40
Dementia 20
Cancer 14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine treated as a null in San Francisco, CA during 2018 were ultrasound (sonogram), vascular procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine for Medicare patients.

doctor visit 64
hospital care 134
inpatient care 134
ultrasound (sonogram) 241
vascular procedures 241

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine.

Gender
Male 193
Female 178
Ethnicity
Non-Hispanic White 233
Black 28
Hispanic 24
Asian 62
Other 0
Native American 0
Age
From 65 to 74 127
From 75 to 84 129
85 and over 63
Less than 65 52

Conditions of Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine in 2018

Hypertension 75
High Cholesterol 73
Stroke 43
Ischemic Heart Disease 52
Depression 31
Chronic Kidney Disease 44
Asthma 12
Osteoperosis 10
Atrial Fibrilation 19
Heart Failure 30
Chronic Obstructive Pulmonary Disease 22
Diabetes 40
Dementia 22
Cancer 13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine treated as a null in San Francisco, CA during 2019 were ultrasound (sonogram), vascular procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine for Medicare patients.

doctor visit 61
hospital care 97
inpatient care 97
ultrasound (sonogram) 214
vascular procedures 214

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine.

Gender
Male 158
Female 160
Ethnicity
Non-Hispanic White 198
Black 0
Hispanic 23
Asian 54
Other 23
Native American 0
Age
From 65 to 74 138
From 75 to 84 104
85 and over 43
Less than 65 33

Conditions of Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine in 2019

Hypertension 75
High Cholesterol 71
Stroke 41
Ischemic Heart Disease 51
Depression 30
Chronic Kidney Disease 41
Asthma 9
Osteoperosis 13
Atrial Fibrilation 20
Heart Failure 26
Chronic Obstructive Pulmonary Disease 17
Diabetes 32
Dementia 16
Cancer 8

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine treated as a null in San Francisco, CA during 2020 were hospital care, inpatient care, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine for Medicare patients.

doctor visit 20
hospital care 125
inpatient care 125
ultrasound (sonogram) 116
vascular procedures 116

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine.

Gender
Male 121
Female 109
Ethnicity
Non-Hispanic White 142
Black 18
Hispanic 0
Asian 45
Other 0
Native American 0
Age
From 65 to 74 95
From 75 to 84 66
85 and over 39
Less than 65 30

Conditions of Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine in 2020

Hypertension 75
High Cholesterol 73
Stroke 44
Ischemic Heart Disease 54
Depression 33
Chronic Kidney Disease 53
Asthma 12
Osteoperosis 11
Atrial Fibrilation 23
Heart Failure 30
Chronic Obstructive Pulmonary Disease 17
Diabetes 33
Dementia 21
Cancer 16

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine treated as a null in San Francisco, CA during 2021 were ultrasound (sonogram), vascular procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine for Medicare patients.

doctor visit 66
hospital care 162
inpatient care 162
ultrasound (sonogram) 164
vascular procedures 164

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine.

Gender
Male 178
Female 183
Ethnicity
Non-Hispanic White 226
Black 0
Hispanic 27
Asian 67
Other 22
Native American 0
Age
From 65 to 74 153
From 75 to 84 130
85 and over 53
Less than 65 25

Conditions of Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine in 2021

Hypertension 75
High Cholesterol 73
Stroke 52
Ischemic Heart Disease 48
Depression 29
Chronic Kidney Disease 42
Asthma 8
Osteoperosis 13
Atrial Fibrilation 21
Heart Failure 24
Chronic Obstructive Pulmonary Disease 17
Diabetes 31
Dementia 20
Cancer 15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine treated as a null in San Francisco, CA during 2022 were ultrasound (sonogram), vascular procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine for Medicare patients.

doctor visit 39
hospital care 137
inpatient care 137
ultrasound (sonogram) 171
vascular procedures 171

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine.

Gender
Male 184
Female 157
Ethnicity
Non-Hispanic White 214
Black 24
Hispanic 34
Asian 48
Other 21
Native American 0
Age
From 65 to 74 138
From 75 to 84 123
85 and over 39
Less than 65 41

Conditions of Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine in 2022

Hypertension 75
High Cholesterol 75
Stroke 55
Ischemic Heart Disease 46
Depression 29
Chronic Kidney Disease 32
Asthma 11
Osteoperosis 12
Atrial Fibrilation 33
Heart Failure 26
Chronic Obstructive Pulmonary Disease 13
Diabetes 40
Dementia 12
Cancer 18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine for Medicare patients.

The highest averages for the top procedures that Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine treated as a null in San Francisco, CA were ultrasound (sonogram), vascular procedures, hospital care and inpatient care.

doctor visit 56
hospital care 94
inpatient care 94
ultrasound (sonogram) 155
vascular procedures 155

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine.

Gender
Male 141
Female 144
Ethnicity
Black / African American 15
Asian / Pacific Islander 51
Non-Hispanic White 177
Native American / Alaskan Native 0
Hispanic 18
Other 7
Age
75 to 84 92
85 and over 43
Less than 65 35
65 to 74 115

Average of Total of Conditions of Medicare patients treated by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine treated were hypertension, high cholesterol, ischemic heart disease and stroke.

Hypertension 68
High Cholesterol 64
Stroke 44
Ischemic Heart Disease 44
Depression 27
Chronic Kidney Disease 38
Asthma 11
Osteoporosis 10
Heart Failure 26
Chronic Obstructive Pulmonary Disease 16
Diabetes 33
Atrial Fibrillation 21
Dementia 16
Cancer 12

Education & Training

Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine graduated from University of Hawaii at Manoa, John A. Burns School of Medicine. She completed residency at University of California, San Francisco (UCSF) Affiliated Hospitals. She is certified by the American Board of Medical Specialties, Neurocritical Care and has a state license in California.

Medical School: University of Hawaii at Manoa, John A. Burns School of Medicine

Residency: University of California, San Francisco (UCSF) Affiliated Hospitals

Board Certification: American Board of Medical Specialties, Neurocritical Care

Licensed In: California

Affiliations & Hospitals

Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine is associated with these hospitals and organizations:

UCSF Health
UCSF Medical Group
UCSF Benioff Children's Hospitals
Hill Physicians
UCSF DEPT OF SURGERY
Stroke Clinic
UNIVERSITY ANESTHESIA MEDICAL GROUP

Ratings & Reviews

Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine has an exceptional overall rating with an average of 4.92 out of 5 stars based on 53 ratings. We collect ratings and reviews of Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine from all over the web to help you find the right in San Francisco, CA. 

4.92
Overall Rating
Leave a Review

General Payments

These charts describe general payments received by Dr. Nerissa U. Ko, MD, MA, Neurology | Critical Care Medicine. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

Payments by Company
Genentech USA, Inc. $118 Activase
$118
UCB, Inc. $105 Vimpat
$105
Types of Payments
Food and Beverage $224

Biography

Dr. Nerissa Ko sees patients in San Francisco, CA, San Mateo, CA, and Berkeley, CA. Her medical specialties are general practice and neurology (brain & spinal cord disease). Patients gave Dr. Ko an average rating of 5.0 stars (out of 5). She attended the University of Hawaii at Manoa, John A. Burns School of Medicine and then went on to complete her residency at a hospital affiliated with the University of California, San Francisco (UCSF). She is professionally affiliated with UCSF Medical Group, UCSF Benioff Children's Hospitals, and Hill Physicians. According to Doctor.com, new patients are welcome to contact her office in San Mateo, CA.

General Practitioners in Nearby Locations

Other Providers in San Francisco, CA