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Home > CA Providers > Internists & Internal Medicine Doctors

Dr. Thomas Toan Nguyen, MD, MBA

(469 Ratings)

Specializes in: Internal Medicine (Adult Medicine)

Ross University School of Medicine (2004)

300 Canal Street
King City, CA 93930

(303) 390-1940

Dr. Thomas Toan Nguyen, MD, MBA is an internist in King City, CA specializing in internal medicine (adult medicine). He graduated from Ross University School of Medicine in 2004 and has 22 years of experience. Dr. Thomas Toan Nguyen, MD, MBA is affiliated with Ronald Reagan UCLA Medical Center and UCLA Health.

Office Locations

300 Canal Street
King City, CA 93930

(303) 390-1940

open_in_new

350 S Oak Avenue
Oakdale, CA 95361

(303) 390-1940

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4476 Broad Street
San Luis Obispo, CA 93401

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862 Aerovista Place Suite 100
San Luis Obispo, CA 93401

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Thomas Toan Nguyen, MD, MBA treated as an internist in King City, CA during 2012 were hospital care, inpatient care, preventive care and vaccines.

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

doctor visit	2032
ear procedures	13
hospital care	374
inpatient care	374
preventive care	256
vaccines	256

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Thomas Toan Nguyen, MD, MBA treated as an internist in King City, CA during 2013 were hospital care, inpatient care, preventive care and vaccines.

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

doctor visit	2101
ear procedures	12
hospital care	456
inpatient care	444
outpatient care	12
preventive care	149
vaccines	149

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA.

**Gender**
Male	372
Female	385

**Ethnicity**
Non-Hispanic White	636
Black	0
Hispanic	100
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	308
From 75 to 84	268
85 and over	147
Less than 65	34

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2013

Hypertension	75
High Cholesterol	70
Stroke	6
Ischemic Heart Disease	46
Depression	19
Chronic Kidney Disease	22
Asthma	6
Osteoperosis	12
Atrial Fibrilation	15
Heart Failure	26
Chronic Obstructive Pulmonary Disease	16
Diabetes	33
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Thomas Toan Nguyen, MD, MBA treated as an internist in King City, CA during 2014 were hospital care, inpatient care, preventive care and vaccines.

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

doctor visit	1997
hospital care	530
inpatient care	502
outpatient care	28
preventive care	352
vaccines	352

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA.

**Gender**
Male	393
Female	370

**Ethnicity**
Non-Hispanic White	629
Black	0
Hispanic	107
Asian	13
Other	0
Native American	0

**Age**
From 65 to 74	298
From 75 to 84	293
85 and over	147
Less than 65	25

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2014

Hypertension	75
High Cholesterol	74
Stroke	9
Ischemic Heart Disease	50
Depression	18
Chronic Kidney Disease	23
Asthma	7
Osteoperosis	14
Atrial Fibrilation	17
Heart Failure	25
Chronic Obstructive Pulmonary Disease	17
Diabetes	38
Dementia	14
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Thomas Toan Nguyen, MD, MBA treated as an internist in King City, CA during 2015 were preventive care and vaccines.

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

doctor visit	796
preventive care	84
vaccines	84

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA.

**Gender**
Male	498
Female	506

**Ethnicity**
Non-Hispanic White	842
Black	0
Hispanic	120
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	450
From 75 to 84	338
85 and over	160
Less than 65	56

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2015

Hypertension	75
High Cholesterol	67
Stroke	5
Ischemic Heart Disease	36
Depression	18
Chronic Kidney Disease	25
Asthma	10
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	18
Chronic Obstructive Pulmonary Disease	16
Diabetes	31
Dementia	11
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Thomas Toan Nguyen, MD, MBA treated as an internist in King City, CA during 2016 were hospital care, inpatient care, preventive care and vaccines.

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

doctor visit	864
hospital care	100
inpatient care	100
preventive care	66
vaccines	66

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA.

**Gender**
Male	318
Female	317

**Ethnicity**
Non-Hispanic White	570
Black	0
Hispanic	34
Asian	0
Other	18
Native American	0

**Age**
From 65 to 74	319
From 75 to 84	175
85 and over	106
Less than 65	35

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2016

Hypertension	69
High Cholesterol	57
Stroke	9
Ischemic Heart Disease	31
Depression	16
Chronic Kidney Disease	25
Asthma	15
Osteoperosis	7
Atrial Fibrilation	13
Heart Failure	16
Chronic Obstructive Pulmonary Disease	13
Diabetes	22
Dementia	11
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Thomas Toan Nguyen, MD, MBA treated as an internist in King City, CA during 2017 were preventive care, vaccines, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

blood draw	14
doctor visit	713
hospital care	86
inpatient care	86
preventive care	88
vaccines	88

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA.

**Gender**
Male	206
Female	184

**Ethnicity**
Non-Hispanic White	340
Black	0
Hispanic	31
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	180
From 75 to 84	114
85 and over	65
Less than 65	31

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2017

Hypertension	70
High Cholesterol	57
Stroke	4
Ischemic Heart Disease	32
Depression	22
Chronic Kidney Disease	34
Asthma	5
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	18
Chronic Obstructive Pulmonary Disease	19
Diabetes	25
Dementia	15
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Thomas Toan Nguyen, MD, MBA treated as an internist in King City, CA during 2018 were hospital care, inpatient care, preventive care and vaccines.

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

doctor visit	922
hospital care	160
inpatient care	160
preventive care	49
vaccines	49

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA.

**Gender**
Male	247
Female	206

**Ethnicity**
Non-Hispanic White	397
Black	0
Hispanic	36
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	203
From 75 to 84	139
85 and over	73
Less than 65	38

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2018

Hypertension	71
High Cholesterol	62
Stroke	8
Ischemic Heart Disease	37
Depression	25
Chronic Kidney Disease	37
Asthma	9
Osteoperosis	7
Atrial Fibrilation	19
Heart Failure	25
Chronic Obstructive Pulmonary Disease	15
Diabetes	28
Dementia	17
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Thomas Toan Nguyen, MD, MBA treated as an internist in King City, CA during 2019 were preventive care, vaccines, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

doctor visit	1260
hospital care	25
inpatient care	25
preventive care	50
vaccines	35

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA.

**Gender**
Male	277
Female	203

**Ethnicity**
Non-Hispanic White	400
Black	0
Hispanic	39
Asian	0
Other	23
Native American	0

**Age**
From 65 to 74	252
From 75 to 84	132
85 and over	47
Less than 65	49

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2019

Hypertension	69
High Cholesterol	66
Stroke	5
Ischemic Heart Disease	32
Depression	19
Chronic Kidney Disease	26
Asthma	7
Osteoperosis	7
Atrial Fibrilation	13
Heart Failure	16
Chronic Obstructive Pulmonary Disease	10
Diabetes	25
Dementia	9
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Thomas Toan Nguyen, MD, MBA treated as an internist in King City, CA during 2020 were preventive care, vaccines, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

doctor visit	1229
hospital care	28
inpatient care	28
preventive care	73
vaccines	57

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA.

**Gender**
Male	297
Female	241

**Ethnicity**
Non-Hispanic White	458
Black	0
Hispanic	39
Asian	0
Other	22
Native American	0

**Age**
From 65 to 74	304
From 75 to 84	145
85 and over	52
Less than 65	37

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2020

Hypertension	66
High Cholesterol	60
Stroke	6
Ischemic Heart Disease	30
Depression	18
Chronic Kidney Disease	29
Asthma	6
Osteoperosis	7
Atrial Fibrilation	11
Heart Failure	18
Chronic Obstructive Pulmonary Disease	10
Diabetes	25
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Thomas Toan Nguyen, MD, MBA treated as an internist in King City, CA during 2021 were hospital care, inpatient care, preventive care and vaccines.

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

doctor visit	1241
hospital care	130
inpatient care	130
lab tests	13
preventive care	44
vaccines	23

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA.

**Gender**
Male	348
Female	299

**Ethnicity**
Non-Hispanic White	554
Black	0
Hispanic	44
Asian	0
Other	27
Native American	0

**Age**
From 65 to 74	361
From 75 to 84	177
85 and over	65
Less than 65	44

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2021

Hypertension	62
High Cholesterol	62
Stroke	7
Ischemic Heart Disease	31
Depression	19
Chronic Kidney Disease	28
Asthma	5
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	22
Chronic Obstructive Pulmonary Disease	11
Diabetes	24
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Thomas Toan Nguyen, MD, MBA treated as an internist in King City, CA during 2022 were preventive care, vaccines and ear procedures.

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

doctor visit	1111
ear procedures	12
preventive care	37
vaccines	26

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA.

**Gender**
Male	306
Female	245

**Ethnicity**
Non-Hispanic White	473
Black	0
Hispanic	36
Asian	0
Other	23
Native American	0

**Age**
From 65 to 74	304
From 75 to 84	162
85 and over	51
Less than 65	34

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2022

Hypertension	66
High Cholesterol	73
Stroke	6
Ischemic Heart Disease	25
Depression	18
Chronic Kidney Disease	14
Asthma	7
Osteoperosis	12
Atrial Fibrilation	16
Heart Failure	15
Chronic Obstructive Pulmonary Disease	10
Diabetes	23
Dementia	6
Cancer	13

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Thomas Toan Nguyen, MD, MBA treated as an internist in King City, CA during 2023 were preventive care, nursing home care and vaccines.

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

doctor visit	1166
nursing home care	16
preventive care	27
vaccines	12

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA.

**Gender**
Male	282
Female	209

**Ethnicity**
Non-Hispanic White	403
Black	0
Hispanic	40
Asian	0
Other	29
Native American	0

**Age**
From 65 to 74	266
From 75 to 84	149
85 and over	45
Less than 65	31

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2023

Hypertension	70
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	29
Depression	19
Chronic Kidney Disease	14
Asthma	7
Osteoperosis	13
Atrial Fibrilation	17
Heart Failure	15
Chronic Obstructive Pulmonary Disease	10
Diabetes	27
Dementia	5
Cancer	13

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

doctor visit	911

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA.

**Gender**
Male	287
Female	199

**Ethnicity**
Non-Hispanic White	409
Black	0
Hispanic	31
Asian	0
Other	24
Native American	0

**Age**
From 65 to 74	250
From 75 to 84	161
85 and over	42
Less than 65	33

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2024

Hypertension	70
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	31
Depression	21
Chronic Kidney Disease	16
Asthma	8
Osteoperosis	13
Atrial Fibrilation	17
Heart Failure	13
Chronic Obstructive Pulmonary Disease	10
Diabetes	26
Dementia	6
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Thomas Toan Nguyen, MD, MBA for Medicare patients.

The highest averages for the top procedures that Dr. Thomas Toan Nguyen, MD, MBA treated as an internist in King City, CA were hospital care, inpatient care, preventive care and vaccines.

blood draw	14
doctor visit	1257
ear procedures	12
hospital care	209
inpatient care	205
lab tests	13
nursing home care	16
outpatient care	20
preventive care	106
vaccines	99

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA.

**Gender**
Female	258
Male	294

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	1
Non-Hispanic White	470
Native American / Alaskan Native	0
Hispanic	50
Other	12

**Age**
85 and over	76
75 to 84	173
Less than 65	34
65 to 74	268

Average of Total of Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Thomas Toan Nguyen, MD, MBA treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	64
High Cholesterol	61
Stroke	6
Ischemic Heart Disease	31
Depression	17
Chronic Kidney Disease	22
Asthma	7
Osteoporosis	9
Heart Failure	17
Chronic Obstructive Pulmonary Disease	12
Diabetes	25
Atrial Fibrillation	13
Cancer	10
Dementia	9

Education & Training

Dr. Thomas Toan Nguyen, MD, MBA graduated from Ross University School of Medicine in 2004. He completed residency at Internship: Medicine, The Jewish Hospital. He is certified by the Internal Medicine, American Board of Internal Medicine and has a state license in California.

Medical School: Ross University School of Medicine (2004)

Residency: Internship: Medicine, The Jewish Hospital (2007)

Board Certification: Internal Medicine, American Board of Internal Medicine (2007)

Licensed In: California

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Thomas Toan Nguyen, MD, MBA appears to accept the following insurance providers: Cigna, TRICARE, Private Healthcare Systems (PHCS), Aetna, Blue Shield of California, MultiPlan, UnitedHealthcare, Anthem, Medicare Advantage, Prime Health, First Health, HealthSmart, Centivo, Health Net of California and UFCM Health System.

Insurance Accepted by Provider includes:

According to our sources, Dr. Thomas Toan Nguyen, MD, MBA accepts the following insurance providers:

Cigna

TRICARE

Private Healthcare Systems (PHCS)

Aetna

Blue Shield of California

MultiPlan

UnitedHealthcare

Anthem

Medicare Advantage

Prime Health

First Health

HealthSmart

Centivo

Health Net of California

UFCM Health System

Ratings & Reviews

Dr. Thomas Toan Nguyen, MD, MBA has an exceptional overall rating with an average of 4.89 out of 5 stars based on 469 ratings. We collect ratings and reviews of Dr. Thomas Toan Nguyen, MD, MBA from all over the web to help you find the right in King City, CA.

4.89

Overall Rating

(469 Ratings)

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General Payments

These charts describe general payments received by Dr. Thomas Toan Nguyen, MD, MBA. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Pfizer Inc.	$109 ELIQUIS $29	XELJANZ $25	INFLECTRA $21	ABRYSVO $20	VIAGRA $15
Astellas Pharma US Inc	$100 $100
AstraZeneca Pharmaceuticals LP	$80 SYMBICORT $33	CRESTOR $26	ONGLYZA $22
Olympus America Inc.	$42 Olympus Hemostasis Devices $42
AbbVie, Inc.	$41 Mavyret $41
Other	$257 FLUZONE QIV $32	Mavyret $29	Cologuard Collection Kit $21	Yupelri $19	Vivitrol $19	Other $137

**Types of Payments**
Food and Beverage	$530
Education	$100

Biography

Dr. Thomas Nguyen's average patient rating is 5.0 stars (out of 5). Areas of particular interest for Dr. Nguyen include primary care. Dr. Nguyen is professionally affiliated with Ronald Reagan UCLA Medical Center. He accepts several insurance carriers, including Anthem, UnitedHealthcare, and Blue Cross/Blue Shield. Dr. Nguyen is a graduate of Ross University School of Medicine.

Select Year:

Dr. Thomas Toan Nguyen, MD, MBA

Office Locations

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2023

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

2024 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA in 2024

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Average Medicare Patient Data From 2012 - 2024

Average of Total of Conditions of Medicare patients treated by Dr. Thomas Toan Nguyen, MD, MBA From 2012 - 2024

Education & Training

Insurance Information

Ratings & Reviews

General Payments

Biography

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