Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > IN Providers

Dr. Thach N. Nguyen, MD

Accepting New Patients

(3 Ratings)

Specializes in: Adult Cardiology

Hue College of Medicine and Pharmacy (1978)

200 E 89th Avenue Pavilion B, Third Floor, Suite 3C
Merrillville, IN 46410

(219) 644-3957

Dr. Thach N. Nguyen, MD is a cardiologist in Merrillville, IN specializing in adult cardiology. He graduated from Hue College of Medicine and Pharmacy in 1978 and has 48 years of experience.

Office Locations

200 E 89th Avenue Pavilion B, Third Floor, Suite 3C
Merrillville, IN 46410

open_in_new

1781 W Morthland Drive
Valparaiso, IN 46385

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Thach N. Nguyen, MD in 2024

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

Top 5%

By Volume:

inpatient hospital care

In 2024, Dr. Thach N. Nguyen, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 95% of providers in related specialties within Indiana.

Top 10%

By Affordability:

hospital care

inpatient care

inpatient hospital care

In 2024, Dr. Thach N. Nguyen, MD 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 90% of providers in related specialties within Indiana. 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 Affordability:

cardiac catheterization

catheterization

cholesterol screening

lipid profile

In 2012, Dr. Thach N. Nguyen, MD had a list price for cardiac catheterization, catheterization, cholesterol screening, and lipid profile that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Indiana. 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. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN during 2012 were inpatient care, hospital care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

ambulatory monitoring	13
cardiac procedures	1009
catheterization	106
diagnostic procedures	61
doctor visit	1473
hospital care	2862
inpatient care	2862
lab tests	509
minimally invasive procedures	106
nuclear scan	167
preventive care	19
stent placement (stenting)	45
stress testing	435
ultrasound (sonogram)	449
vascular procedures	93

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN during 2013 were inpatient care, hospital care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

ambulatory monitoring	24
angioplasty	28
cardiac procedures	802
catheterization	88
diabetes management	14
diagnostic procedures	46
doctor visit	1271
hospital care	2128
inpatient care	2128
lab tests	481
minimally invasive procedures	88
nuclear scan	103
preventive care	185
stent placement (stenting)	28
stress testing	268
ultrasound (sonogram)	422
vaccines	11
vascular procedures	46

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Thach N. Nguyen, MD.

**Gender**
Male	1066
Female	1273

**Ethnicity**
Non-Hispanic White	1632
Black	507
Hispanic	169
Asian	18
Other	13
Native American	0

**Age**
From 65 to 74	801
From 75 to 84	674
85 and over	406
Less than 65	458

Conditions of Medicare patients treated by Dr. Thach N. Nguyen, MD in 2013

Hypertension	75
High Cholesterol	58
Stroke	14
Ischemic Heart Disease	67
Depression	26
Chronic Kidney Disease	42
Asthma	14
Osteoperosis	8
Atrial Fibrilation	21
Heart Failure	50
Chronic Obstructive Pulmonary Disease	39
Diabetes	47
Dementia	22
Cancer	15

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN during 2014 were inpatient care, hospital care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

angioplasty	42
cardiac procedures	704
catheterization	114
diabetes management	26
diagnostic procedures	51
doctor visit	1243
hospital care	2059
inpatient care	2059
lab tests	439
minimally invasive procedures	114
nuclear scan	77
preventive care	228
stent placement (stenting)	42
stress testing	232
ultrasound (sonogram)	358
vaccines	17
vascular procedures	51

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Thach N. Nguyen, MD.

**Gender**
Male	999
Female	1287

**Ethnicity**
Non-Hispanic White	1663
Black	419
Hispanic	176
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	784
From 75 to 84	674
85 and over	373
Less than 65	455

Conditions of Medicare patients treated by Dr. Thach N. Nguyen, MD in 2014

Hypertension	75
High Cholesterol	59
Stroke	14
Ischemic Heart Disease	64
Depression	28
Chronic Kidney Disease	44
Asthma	16
Osteoperosis	9
Atrial Fibrilation	22
Heart Failure	48
Chronic Obstructive Pulmonary Disease	39
Diabetes	47
Dementia	23
Cancer	14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN during 2015 were inpatient care, hospital care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

angioplasty	44
cardiac procedures	681
catheterization	117
diabetes management	18
diagnostic procedures	51
doctor visit	1213
hospital care	2442
inpatient care	2442
lab tests	413
minimally invasive procedures	117
nuclear scan	81
preventive care	169
stent placement (stenting)	44
stress testing	218
ultrasound (sonogram)	346
vaccines	19
vascular procedures	51

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Thach N. Nguyen, MD.

**Gender**
Male	1948
Female	2270

**Ethnicity**
Non-Hispanic White	3036
Black	830
Hispanic	304
Asian	26
Other	22
Native American	0

**Age**
From 65 to 74	1480
From 75 to 84	1174
85 and over	750
Less than 65	814

Conditions of Medicare patients treated by Dr. Thach N. Nguyen, MD in 2015

Hypertension	75
High Cholesterol	65
Stroke	16
Ischemic Heart Disease	66
Depression	29
Chronic Kidney Disease	50
Asthma	29
Osteoperosis	9
Atrial Fibrilation	25
Heart Failure	51
Chronic Obstructive Pulmonary Disease	42
Diabetes	50
Dementia	24
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN during 2016 were hospital care, inpatient care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

angioplasty	36
cardiac procedures	500
catheterization	88
diabetes management	40
diagnostic procedures	34
doctor visit	1080
hospital care	2214
inpatient care	2199
lab tests	359
minimally invasive procedures	88
nuclear scan	77
outpatient care	15
preventive care	99
stent placement (stenting)	36
stress testing	213
ultrasound (sonogram)	199
vaccines	14
vascular procedures	34

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Thach N. Nguyen, MD.

**Gender**
Male	845
Female	925

**Ethnicity**
Non-Hispanic White	1256
Black	361
Hispanic	117
Asian	19
Other	17
Native American	0

**Age**
From 65 to 74	663
From 75 to 84	470
85 and over	279
Less than 65	358

Conditions of Medicare patients treated by Dr. Thach N. Nguyen, MD in 2016

Hypertension	75
High Cholesterol	69
Stroke	13
Ischemic Heart Disease	68
Depression	29
Chronic Kidney Disease	54
Asthma	43
Osteoperosis	8
Atrial Fibrilation	24
Heart Failure	50
Chronic Obstructive Pulmonary Disease	42
Diabetes	53
Dementia	24
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN during 2017 were hospital care, inpatient care, cardiac procedures and stress testing.

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

cardiac procedures	460
catheterization	26
diabetes management	11
diagnostic procedures	26
doctor visit	968
hospital care	1910
inpatient care	1794
lab tests	217
minimally invasive procedures	26
nuclear scan	99
outpatient care	116
preventive care	61
stress testing	254
ultrasound (sonogram)	180
vaccines	11
vascular procedures	26

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Thach N. Nguyen, MD.

**Gender**
Male	823
Female	968

**Ethnicity**
Non-Hispanic White	1273
Black	371
Hispanic	119
Asian	17
Other	11
Native American	0

**Age**
From 65 to 74	640
From 75 to 84	505
85 and over	276
Less than 65	370

Conditions of Medicare patients treated by Dr. Thach N. Nguyen, MD in 2017

Hypertension	75
High Cholesterol	64
Stroke	14
Ischemic Heart Disease	64
Depression	31
Chronic Kidney Disease	57
Asthma	13
Osteoperosis	8
Atrial Fibrilation	23
Heart Failure	50
Chronic Obstructive Pulmonary Disease	41
Diabetes	50
Dementia	24
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN during 2018 were hospital care, inpatient care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

angioplasty	24
cardiac procedures	244
catheterization	63
diagnostic procedures	27
doctor visit	923
hospital care	1485
inpatient care	1424
lab tests	215
minimally invasive procedures	63
nuclear scan	44
outpatient care	61
preventive care	90
stent placement (stenting)	24
stress testing	132
ultrasound (sonogram)	49
vaccines	11
vascular procedures	27

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Thach N. Nguyen, MD.

**Gender**
Male	369
Female	364

**Ethnicity**
Non-Hispanic White	451
Black	232
Hispanic	38
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	300
From 75 to 84	184
85 and over	87
Less than 65	162

Conditions of Medicare patients treated by Dr. Thach N. Nguyen, MD in 2018

Hypertension	75
High Cholesterol	71
Stroke	17
Ischemic Heart Disease	72
Depression	30
Chronic Kidney Disease	58
Asthma	12
Osteoperosis	7
Atrial Fibrilation	24
Heart Failure	58
Chronic Obstructive Pulmonary Disease	47
Diabetes	53
Dementia	25
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN during 2019 were hospital care, inpatient care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

cardiac procedures	231
catheterization	26
diagnostic procedures	26
doctor visit	820
hospital care	1355
inpatient care	1355
lab tests	189
minimally invasive procedures	26
nuclear scan	53
preventive care	80
stress testing	127
ultrasound (sonogram)	78
vascular procedures	26

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Thach N. Nguyen, MD.

**Gender**
Male	321
Female	365

**Ethnicity**
Non-Hispanic White	425
Black	203
Hispanic	40
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	245
From 75 to 84	183
85 and over	103
Less than 65	155

Conditions of Medicare patients treated by Dr. Thach N. Nguyen, MD in 2019

Hypertension	75
High Cholesterol	72
Stroke	16
Ischemic Heart Disease	68
Depression	29
Chronic Kidney Disease	57
Asthma	12
Osteoperosis	9
Atrial Fibrilation	23
Heart Failure	55
Chronic Obstructive Pulmonary Disease	46
Diabetes	50
Dementia	24
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN during 2020 were hospital care, inpatient care, cardiac procedures and stress testing.

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

cardiac procedures	223
catheterization	27
diagnostic procedures	27
doctor visit	740
hospital care	1553
inpatient care	1553
lab tests	73
minimally invasive procedures	27
nuclear scan	54
preventive care	73
stress testing	129
ultrasound (sonogram)	67
vascular procedures	27

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Thach N. Nguyen, MD.

**Gender**
Male	320
Female	301

**Ethnicity**
Non-Hispanic White	366
Black	196
Hispanic	39
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	234
From 75 to 84	176
85 and over	95
Less than 65	116

Conditions of Medicare patients treated by Dr. Thach N. Nguyen, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	17
Ischemic Heart Disease	68
Depression	28
Chronic Kidney Disease	59
Asthma	9
Osteoperosis	8
Atrial Fibrilation	28
Heart Failure	57
Chronic Obstructive Pulmonary Disease	42
Diabetes	50
Dementia	23
Cancer	14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN during 2021 were inpatient care, hospital care, cardiac procedures and stress testing.

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

angioplasty	26
cardiac procedures	322
catheterization	72
diagnostic procedures	33
doctor visit	826
hospital care	1756
inpatient care	1756
lab tests	81
minimally invasive procedures	72
nuclear scan	69
preventive care	81
stent placement (stenting)	26
stress testing	159
ultrasound (sonogram)	91
vascular procedures	33

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Thach N. Nguyen, MD.

**Gender**
Male	319
Female	336

**Ethnicity**
Non-Hispanic White	376
Black	207
Hispanic	50
Asian	11
Other	11
Native American	0

**Age**
From 65 to 74	237
From 75 to 84	196
85 and over	96
Less than 65	126

Conditions of Medicare patients treated by Dr. Thach N. Nguyen, MD in 2021

Hypertension	75
High Cholesterol	74
Stroke	17
Ischemic Heart Disease	66
Depression	34
Chronic Kidney Disease	62
Asthma	11
Osteoperosis	10
Atrial Fibrilation	25
Heart Failure	58
Chronic Obstructive Pulmonary Disease	37
Diabetes	51
Dementia	29
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN during 2022 were hospital care, inpatient care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

cardiac procedures	142
catheterization	12
diagnostic procedures	12
doctor visit	623
hospital care	1392
inpatient care	1392
lab tests	82
minimally invasive procedures	12
nuclear scan	12
preventive care	82
stress testing	48
ultrasound (sonogram)	82
vascular procedures	12

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Thach N. Nguyen, MD.

**Gender**
Male	277
Female	278

**Ethnicity**
Non-Hispanic White	336
Black	180
Hispanic	23
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	188
From 75 to 84	181
85 and over	92
Less than 65	94

Conditions of Medicare patients treated by Dr. Thach N. Nguyen, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	25
Ischemic Heart Disease	56
Depression	34
Chronic Kidney Disease	49
Asthma	13
Osteoperosis	12
Atrial Fibrilation	42
Heart Failure	58
Chronic Obstructive Pulmonary Disease	47
Diabetes	49
Dementia	24
Cancer	19

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN during 2023 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

cardiac procedures	123
catheterization	21
diagnostic procedures	21
doctor visit	545
hospital care	1114
inpatient care	1114
lab tests	39
minimally invasive procedures	21
preventive care	39
stress testing	24
ultrasound (sonogram)	78
vascular procedures	21

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Thach N. Nguyen, MD.

**Gender**
Male	228
Female	247

**Ethnicity**
Non-Hispanic White	276
Black	153
Hispanic	27
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	165
From 75 to 84	165
85 and over	77
Less than 65	68

Conditions of Medicare patients treated by Dr. Thach N. Nguyen, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	24
Ischemic Heart Disease	61
Depression	33
Chronic Kidney Disease	50
Asthma	14
Osteoperosis	15
Atrial Fibrilation	43
Heart Failure	58
Chronic Obstructive Pulmonary Disease	47
Diabetes	53
Dementia	27
Cancer	16

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN during 2024 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

cardiac procedures	93
catheterization	22
diagnostic procedures	22
doctor visit	566
hospital care	1324
inpatient care	1324
lab tests	27
minimally invasive procedures	22
preventive care	27
stress testing	20
ultrasound (sonogram)	51
vascular procedures	22

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Thach N. Nguyen, MD.

**Gender**
Male	237
Female	286

**Ethnicity**
Non-Hispanic White	315
Black	161
Hispanic	29
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	201
From 75 to 84	160
85 and over	81
Less than 65	81

Conditions of Medicare patients treated by Dr. Thach N. Nguyen, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	24
Ischemic Heart Disease	53
Depression	35
Chronic Kidney Disease	48
Asthma	13
Osteoperosis	13
Atrial Fibrilation	36
Heart Failure	55
Chronic Obstructive Pulmonary Disease	49
Diabetes	54
Dementia	24
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Thach N. Nguyen, MD for Medicare patients.

The highest averages for the top procedures that Dr. Thach N. Nguyen, MD treated as a cardiologist in Merrillville, IN were hospital care, inpatient care, cardiac procedures and lab tests.

ambulatory monitoring	18
angioplasty	33
cardiac procedures	425
catheterization	60
diabetes management	21
diagnostic procedures	33
doctor visit	945
hospital care	1814
inpatient care	1800
lab tests	240
minimally invasive procedures	60
nuclear scan	76
outpatient care	64
preventive care	94
stent placement (stenting)	35
stress testing	173
ultrasound (sonogram)	188
vaccines	13
vascular procedures	36

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Thach N. Nguyen, MD.

**Gender**
Female	684
Male	596

**Ethnicity**
Black / African American	293
Asian / Pacific Islander	7
Non-Hispanic White	877
Hispanic	87
Native American / Alaskan Native	0
Other	6

**Age**
85 and over	208
75 to 84	364
Less than 65	250
65 to 74	456

Average of Total of Conditions of Medicare patients treated by Dr. Thach N. Nguyen, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Thach N. Nguyen, MD treated were hypertension, high cholesterol, ischemic heart disease and heart failure.

Hypertension	69
High Cholesterol	64
Stroke	16
Ischemic Heart Disease	59
Depression	28
Chronic Kidney Disease	48
Asthma	15
Osteoporosis	8
Heart Failure	49
Chronic Obstructive Pulmonary Disease	39
Diabetes	46
Atrial Fibrillation	25
Cancer	13
Dementia	22

Education & Training

Dr. Thach N. Nguyen, MD graduated from Hue College of Medicine and Pharmacy in 1978. He completed residency at The Brooklyn Hospital Center. He is certified by the American Board of Internal Medicine: Cardiovascular Disease and has a state license in Indiana.

Medical School: Hue College of Medicine and Pharmacy (1978)

Residency: The Brooklyn Hospital Center

Board Certification: American Board of Internal Medicine: Cardiovascular Disease

Licensed In: Indiana

Ratings & Reviews

Dr. Thach N. Nguyen, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 3 ratings. We collect ratings and reviews of Dr. Thach N. Nguyen, MD from all over the web to help you find the right in Merrillville, IN.

Overall Rating

(3 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2026-07-12

Patient verified via Press Ganey

Nurses and doctor was concern and gave advise.

Overall Rating: 5.0 2026-05-19

Patient verified via Press Ganey

All went well!

General Payments

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

**Payments by Company**
Novartis Pharmaceuticals Corporation	$3,108 ENTRESTO $2,020	LEQVIO $1,063	EXELON PATCH $13	TEKTURNA $11
Boston Scientific Corporation	$2,583 GENERAL - VASCULAR ACCESS $2,500	Watchman Device $83
Janssen Pharmaceuticals, Inc	$915 XARELTO $869	INVOKANA $46
Actelion Pharmaceuticals US, Inc.	$797 OPSUMIT MACITENTAN $414	UPTRAVI $222	OPSUMIT $24	$136
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)	$618 LifeVest $618
Other	$4,381 VERQUVO $616	Catheters $411	NORTHERA $351	EKOSONIC $258	ORENITRAM $160	Other $2,586

**Types of Payments**
Food and Beverage	$9,266
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$2,500
Travel and Lodging	$341
Education	$296

Research Payments

Dr. Thach N. Nguyen, MD has received 6 research payments totaling $7,217.

Biography

Cardiology is an exciting field in which many cures have been achieved and many new treatments are being developed. However, the simplest and most natural treatments are often the best. When lifestyle changes don’t produce the desired result, we then prescribe medication or intervention.