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Dr. Cynthia Chyn Tsui, PhD, MD

Accepting New Patients

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Specializes in: Adult Nephrology
Johns Hopkins University School of Medicine (1996)
39370 Mozart Terrace Suite 106
Fremont, CA 94538

Dr. Cynthia Chyn Tsui, PhD, MD is a nephrologist in Castro Valley, CA specializing in adult nephrology. She graduated from Johns Hopkins University School of Medicine in 1996 and has 30 years of experience. Dr. Cynthia Chyn Tsui, PhD, MD is affiliated with Brown and Toland Physicians, Sutter Health, Washington Hospital and Washington Hospital Healthcare System.

View Doctor's Full Profile (925) 222-5666

Office Locations

Sutter Health

19845 Lake Chabot Road Suite 20
Castro Valley, CA 94546
(510) 925-2126
open_in_new

Washington Hospital

2800 Benedict Drive
San Leandro, CA 94577
(510) 925-2126
open_in_new

Washington Hospital Healthcare System

39233 Liberty Street
Fremont, CA 94538
(510) 795-8186
open_in_new

Sutter Health

39370 Mozart Terrace Suite 106
Fremont, CA 94538
(925) 222-5666
open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Cynthia Chyn Tsui, PhD, MD in 2023

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

Top 25%

By Volume:

inpatient hospital care

By Affordability:

hospital care
inpatient care
inpatient hospital care

In 2012, among providers in related specialties within California, Dr. Cynthia Chyn Tsui, PhD, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of them and she also had a list price for hospital care, inpatient care, and inpatient hospital care (for patient admitted to hospital) 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. Cynthia Chyn Tsui, PhD, MD treated as a nephrologist in Castro Valley, CA during 2012 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Cynthia Chyn Tsui, PhD, MD for Medicare patients.

dialysis 91
doctor visit 73
hemofiltration 60
hospital care 117
inpatient care 117

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Cynthia Chyn Tsui, PhD, MD treated as a nephrologist in Castro Valley, CA during 2013 were hospital care and inpatient care.

Volume of procedures performed by Dr. Cynthia Chyn Tsui, PhD, MD for Medicare patients.

doctor visit 87
hospital care 21
inpatient care 21

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD.

Gender
Male 54
Female 47
Ethnicity
Non-Hispanic White 81
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 45
From 75 to 84 0
85 and over 0
Less than 65 27

Conditions of Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD in 2013

Hypertension 75
High Cholesterol 67
Stroke 0
Ischemic Heart Disease 51
Depression 26
Chronic Kidney Disease 75
Asthma 0
Osteoperosis 0
Atrial Fibrilation 23
Heart Failure 41
Chronic Obstructive Pulmonary Disease 20
Diabetes 54
Dementia 0
Cancer 14

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Cynthia Chyn Tsui, PhD, MD treated as a nephrologist in Castro Valley, CA during 2014 were hospital care, inpatient care and dialysis.

Volume of procedures performed by Dr. Cynthia Chyn Tsui, PhD, MD for Medicare patients.

dialysis 21
doctor visit 72
hospital care 300
inpatient care 300

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD.

Gender
Male 74
Female 65
Ethnicity
Non-Hispanic White 99
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 54
From 75 to 84 0
85 and over 0
Less than 65 52

Conditions of Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD in 2014

Hypertension 75
High Cholesterol 61
Stroke 12
Ischemic Heart Disease 58
Depression 40
Chronic Kidney Disease 75
Asthma 17
Osteoperosis 0
Atrial Fibrilation 26
Heart Failure 50
Chronic Obstructive Pulmonary Disease 27
Diabetes 55
Dementia 9
Cancer 9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Cynthia Chyn Tsui, PhD, MD treated as a nephrologist in Castro Valley, CA during 2015 were hospital care and inpatient care.

Volume of procedures performed by Dr. Cynthia Chyn Tsui, PhD, MD for Medicare patients.

doctor visit 77
hospital care 219
inpatient care 219

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD.

Gender
Male 126
Female 100
Ethnicity
Non-Hispanic White 160
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 78
From 75 to 84 0
85 and over 0
Less than 65 78

Conditions of Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD in 2015

Hypertension 75
High Cholesterol 58
Stroke 11
Ischemic Heart Disease 58
Depression 31
Chronic Kidney Disease 75
Asthma 20
Osteoperosis 0
Atrial Fibrilation 25
Heart Failure 42
Chronic Obstructive Pulmonary Disease 27
Diabetes 52
Dementia 0
Cancer 14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Cynthia Chyn Tsui, PhD, MD treated as a nephrologist in Castro Valley, CA during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Cynthia Chyn Tsui, PhD, MD for Medicare patients.

doctor visit 18
hospital care 296
inpatient care 296

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD.

Gender
Male 58
Female 61
Ethnicity
Non-Hispanic White 36
Black 0
Hispanic 42
Asian 0
Other 0
Native American 0
Age
From 65 to 74 42
From 75 to 84 22
85 and over 12
Less than 65 43

Conditions of Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD in 2016

Hypertension 75
High Cholesterol 61
Stroke 17
Ischemic Heart Disease 68
Depression 28
Chronic Kidney Disease 75
Asthma 29
Osteoperosis 0
Atrial Fibrilation 18
Heart Failure 61
Chronic Obstructive Pulmonary Disease 27
Diabetes 69
Dementia 16
Cancer 16

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Cynthia Chyn Tsui, PhD, MD treated as a nephrologist in Castro Valley, CA during 2017 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Cynthia Chyn Tsui, PhD, MD for Medicare patients.

dialysis 305
doctor visit 83
hemofiltration 22
hospital care 1357
inpatient care 1357

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD.

Gender
Male 309
Female 242
Ethnicity
Non-Hispanic White 285
Black 91
Hispanic 105
Asian 57
Other 13
Native American 0
Age
From 65 to 74 171
From 75 to 84 160
85 and over 80
Less than 65 140

Conditions of Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD in 2017

Hypertension 75
High Cholesterol 70
Stroke 12
Ischemic Heart Disease 64
Depression 37
Chronic Kidney Disease 75
Asthma 16
Osteoperosis 10
Atrial Fibrilation 30
Heart Failure 66
Chronic Obstructive Pulmonary Disease 35
Diabetes 66
Dementia 22
Cancer 12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Cynthia Chyn Tsui, PhD, MD treated as a nephrologist in Castro Valley, CA during 2018 were hospital care, inpatient care, dialysis and lab tests.

Volume of procedures performed by Dr. Cynthia Chyn Tsui, PhD, MD for Medicare patients.

dialysis 173
doctor visit 375
hospital care 1285
inpatient care 1285
lab tests 30

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD.

Gender
Male 403
Female 342
Ethnicity
Non-Hispanic White 422
Black 101
Hispanic 109
Asian 90
Other 0
Native American 0
Age
From 65 to 74 234
From 75 to 84 229
85 and over 128
Less than 65 154

Conditions of Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD in 2018

Hypertension 75
High Cholesterol 75
Stroke 13
Ischemic Heart Disease 60
Depression 33
Chronic Kidney Disease 75
Asthma 16
Osteoperosis 8
Atrial Fibrilation 26
Heart Failure 64
Chronic Obstructive Pulmonary Disease 33
Diabetes 66
Dementia 22
Cancer 13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Cynthia Chyn Tsui, PhD, MD treated as a nephrologist in Castro Valley, CA during 2019 were hospital care, inpatient care, dialysis and lab tests.

Volume of procedures performed by Dr. Cynthia Chyn Tsui, PhD, MD for Medicare patients.

dialysis 69
doctor visit 98
hospital care 814
inpatient care 814
lab tests 13

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD.

Gender
Male 210
Female 147
Ethnicity
Non-Hispanic White 173
Black 67
Hispanic 53
Asian 51
Other 0
Native American 0
Age
From 65 to 74 99
From 75 to 84 111
85 and over 56
Less than 65 91

Conditions of Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD in 2019

Hypertension 75
High Cholesterol 75
Stroke 11
Ischemic Heart Disease 64
Depression 32
Chronic Kidney Disease 75
Asthma 14
Osteoperosis 9
Atrial Fibrilation 26
Heart Failure 64
Chronic Obstructive Pulmonary Disease 30
Diabetes 62
Dementia 23
Cancer 11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Cynthia Chyn Tsui, PhD, MD treated as a nephrologist in Castro Valley, CA during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Cynthia Chyn Tsui, PhD, MD for Medicare patients.

hospital care 1208
inpatient care 1208

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD.

Gender
Male 65
Female 61
Ethnicity
Non-Hispanic White 42
Black 34
Hispanic 26
Asian 13
Other 0
Native American 0
Age
From 65 to 74 43
From 75 to 84 42
85 and over 14
Less than 65 27

Conditions of Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD in 2020

Hypertension 75
High Cholesterol 65
Stroke 18
Ischemic Heart Disease 63
Depression 37
Chronic Kidney Disease 75
Asthma 14
Osteoperosis 0
Atrial Fibrilation 32
Heart Failure 68
Chronic Obstructive Pulmonary Disease 34
Diabetes 62
Dementia 34
Cancer 14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Cynthia Chyn Tsui, PhD, MD treated as a nephrologist in Castro Valley, CA during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Cynthia Chyn Tsui, PhD, MD for Medicare patients.

hospital care 1098
inpatient care 1098

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD.

Gender
Male 32
Female 38
Ethnicity
Non-Hispanic White 27
Black 0
Hispanic 0
Asian 21
Other 0
Native American 0
Age
From 65 to 74 23
From 75 to 84 20
85 and over 12
Less than 65 15

Conditions of Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD in 2021

Hypertension 75
High Cholesterol 61
Stroke 19
Ischemic Heart Disease 60
Depression 29
Chronic Kidney Disease 75
Asthma 0
Osteoperosis 0
Atrial Fibrilation 31
Heart Failure 67
Chronic Obstructive Pulmonary Disease 33
Diabetes 64
Dementia 34
Cancer 0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Cynthia Chyn Tsui, PhD, MD treated as a nephrologist in Castro Valley, CA during 2022 were hospital care, inpatient care and dialysis.

Volume of procedures performed by Dr. Cynthia Chyn Tsui, PhD, MD for Medicare patients.

dialysis 224
hospital care 1043
inpatient care 1043

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD.

Gender
Male 45
Female 33
Ethnicity
Non-Hispanic White 28
Black 0
Hispanic 16
Asian 20
Other 0
Native American 0
Age
From 65 to 74 23
From 75 to 84 25
85 and over 13
Less than 65 17

Conditions of Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD in 2022

Hypertension 75
High Cholesterol 75
Stroke 28
Ischemic Heart Disease 64
Depression 33
Chronic Kidney Disease 75
Asthma 18
Osteoperosis 0
Atrial Fibrilation 64
Heart Failure 69
Chronic Obstructive Pulmonary Disease 41
Diabetes 68
Dementia 28
Cancer 19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Cynthia Chyn Tsui, PhD, MD for Medicare patients.

The highest averages for the top procedures that Dr. Cynthia Chyn Tsui, PhD, MD treated as a nephrologist in Castro Valley, CA were hospital care, inpatient care, dialysis and hemofiltration.

dialysis 147
doctor visit 110
hemofiltration 41
hospital care 705
inpatient care 705
lab tests 21

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD.

Gender
Male 125
Female 103
Ethnicity
Black / African American 26
Asian / Pacific Islander 22
Non-Hispanic White 123
Native American / Alaskan Native 0
Hispanic 31
Other 1
Age
75 to 84 55
85 and over 28
Less than 65 58
65 to 74 73

Average of Total of Conditions of Medicare patients treated by Dr. Cynthia Chyn Tsui, PhD, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Cynthia Chyn Tsui, PhD, MD treated were chronic kidney disease, hypertension, high cholesterol and diabetes.

Hypertension 68
High Cholesterol 60
Stroke 12
Ischemic Heart Disease 55
Depression 29
Chronic Kidney Disease 68
Asthma 13
Osteoporosis 2
Heart Failure 53
Chronic Obstructive Pulmonary Disease 27
Diabetes 56
Atrial Fibrillation 27
Dementia 17
Cancer 11

Education & Training

Dr. Cynthia Chyn Tsui, PhD, MD graduated from Johns Hopkins University School of Medicine in 1996. She completed residency at St. Louis University (SLU) Affiliated Hospitals. She is certified by the American Board of Internal Medicine, Nephrology and has a state license in California.

Medical School: Johns Hopkins University School of Medicine (1996)

Residency: St. Louis University (SLU) Affiliated Hospitals (2003)

Board Certification: American Board of Internal Medicine, Nephrology

Licensed In: California

Affiliations & Hospitals

Dr. Cynthia Chyn Tsui, PhD, MD is associated with these hospitals and organizations:

Brown and Toland Physicians
Sutter Health
Washington Hospital
Washington Hospital Healthcare System

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Cynthia Chyn Tsui, PhD, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

Payments by Company
Fresenius USA Marketing, Inc. $271 Velphoro
$14
$257
ACell, Inc. $59
$59
Amgen Inc. $36 Sensipar
$25 		Parsabiv
$10
AstraZeneca Pharmaceuticals LP $17 LOKELMA
$17
Types of Payments
Food and Beverage $383

Biography

Dr. Cynthia Tsui's specialty is adult nephrology. She is professionally affiliated with Washington Hospital Healthcare System, Brown and Toland Physicians, and Washington Hospital. She welcomes new patients at her office inSan Leandro, CA as reported by Brown and Toland Physicians. Dr. Tsui's education and training includes medical school at St. Louis University School of Medicine and Johns Hopkins University School of Medicine and residency at a hospital affiliated with St. Louis University (SLU). Dr. Tsui is conversant in Mandarin.

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