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Dr. Yih-Dar Nien, MD

Accepting New Patients

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Specializes in: General Surgery

Pontifical Catholic University of Chile (2001)

Professional interests include: bowel resection, laparoscopic hernia repair, abdominal wall reconstruction, and more.

15503 Ventura Boulevard Suite 240
Encino, CA 91436

(818) 461-3321

Dr. Yih-Dar Nien, MD is a general surgeon in Lancaster, CA specializing in general surgery. He graduated from Pontifical Catholic University of Chile in 2001 and has 25 years of experience. Dr. Yih-Dar Nien, MD is affiliated with UCLA Health and UCLA West Valley Medical Center.

Office Locations

44151 15th Street W
Lancaster, CA 93534

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23823 Valencia Boulevard
Valencia, CA 91355

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UCLA West Valley Medical Center

15503 Ventura Boulevard Suite 240
Encino, CA 91436

(818) 461-3321

(818) 461-3331

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UCLA West Valley Medical Center

27235 Tourney Road Suite 2200
Valencia, CA 91355

(661) 253-0210

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Some issues Dr. Yih-Dar Nien, MD can help you with:

Laparoscopic Surgery

Laparoscopic surgery is a kind of minimally invasive surgery using a thin, narrow tube called a laparoscope. Usually performed on the abdomen or the pelvic region, the surgeon makes a few very small incisions instead of one large one.

During the procedure, the surgeon inserts the laparoscope, which contains a light and camera that allows the surgeon to see what is happening inside the body. Then tiny tools are placed through the small openings and used to perform the surgery.

The most common laparoscopic surgery is gallbladder removal, but laparoscopic surgery may also be used for the removal of a kidney or appendix, to treat certain cysts and tumors, for bariatric surgery, for some GERD treatments, or for hernia repairs, among others.

Because laparoscopic surgery only uses a few tiny incisions, the scars are minimal and recovery is easier than with open surgery.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Yih-Dar Nien, MD treated as a general surgeon in Lancaster, CA during 2012 were hospital care, inpatient care, catheterization and minimally invasive procedures.

Volume of procedures performed by Dr. Yih-Dar Nien, MD for Medicare patients.

abdominal surgery	11
catheterization	30
doctor visit	126
gastrointestinal procedures	11
hospital care	137
inpatient care	137
minimally invasive procedures	11

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Yih-Dar Nien, MD treated as a general surgeon in Lancaster, CA during 2013 were hospital care, inpatient care and catheterization.

Volume of procedures performed by Dr. Yih-Dar Nien, MD for Medicare patients.

catheterization	21
doctor visit	126
hospital care	100
inpatient care	100

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Yih-Dar Nien, MD.

**Gender**
Male	97
Female	108

**Ethnicity**
Non-Hispanic White	131
Black	0
Hispanic	37
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	88
From 75 to 84	69
85 and over	18
Less than 65	30

Conditions of Medicare patients treated by Dr. Yih-Dar Nien, MD in 2013

Hypertension	75
High Cholesterol	60
Stroke	8
Ischemic Heart Disease	50
Depression	23
Chronic Kidney Disease	37
Asthma	11
Osteoperosis	11
Atrial Fibrilation	20
Heart Failure	36
Chronic Obstructive Pulmonary Disease	32
Diabetes	47
Dementia	15
Cancer	31

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Yih-Dar Nien, MD treated as a general surgeon in Lancaster, CA during 2014 were hospital care, inpatient care and catheterization.

Volume of procedures performed by Dr. Yih-Dar Nien, MD for Medicare patients.

catheterization	28
doctor visit	224
hospital care	103
inpatient care	103

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Yih-Dar Nien, MD.

**Gender**
Male	143
Female	154

**Ethnicity**
Non-Hispanic White	197
Black	43
Hispanic	43
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	124
From 75 to 84	98
85 and over	23
Less than 65	52

Conditions of Medicare patients treated by Dr. Yih-Dar Nien, MD in 2014

Hypertension	75
High Cholesterol	61
Stroke	11
Ischemic Heart Disease	51
Depression	27
Chronic Kidney Disease	40
Asthma	11
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	27
Chronic Obstructive Pulmonary Disease	32
Diabetes	45
Dementia	12
Cancer	29

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Yih-Dar Nien, MD treated as a general surgeon in Lancaster, CA during 2015 were hospital care, inpatient care, catheterization and open surgery.

Volume of procedures performed by Dr. Yih-Dar Nien, MD for Medicare patients.

abdominal surgery	15
catheterization	48
doctor visit	260
gastrointestinal procedures	15
hospital care	136
inpatient care	136
open surgery	15

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Yih-Dar Nien, MD.

**Gender**
Male	316
Female	360

**Ethnicity**
Non-Hispanic White	458
Black	56
Hispanic	122
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	294
From 75 to 84	216
85 and over	68
Less than 65	98

Conditions of Medicare patients treated by Dr. Yih-Dar Nien, MD in 2015

Hypertension	75
High Cholesterol	60
Stroke	9
Ischemic Heart Disease	46
Depression	30
Chronic Kidney Disease	36
Asthma	24
Osteoperosis	15
Atrial Fibrilation	12
Heart Failure	26
Chronic Obstructive Pulmonary Disease	37
Diabetes	41
Dementia	15
Cancer	35

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Yih-Dar Nien, MD treated as a general surgeon in Lancaster, CA during 2016 were hospital care, inpatient care, catheterization and open surgery.

Volume of procedures performed by Dr. Yih-Dar Nien, MD for Medicare patients.

abdominal surgery	11
catheterization	40
doctor visit	202
gastrointestinal procedures	11
hospital care	74
inpatient care	74
open surgery	11

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Yih-Dar Nien, MD.

**Gender**
Male	110
Female	170

**Ethnicity**
Non-Hispanic White	176
Black	29
Hispanic	59
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	124
From 75 to 84	83
85 and over	34
Less than 65	39

Conditions of Medicare patients treated by Dr. Yih-Dar Nien, MD in 2016

Hypertension	75
High Cholesterol	53
Stroke	9
Ischemic Heart Disease	49
Depression	27
Chronic Kidney Disease	42
Asthma	30
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	25
Chronic Obstructive Pulmonary Disease	28
Diabetes	43
Dementia	18
Cancer	23

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Yih-Dar Nien, MD treated as a general surgeon in Lancaster, CA during 2017 were hospital care, inpatient care, catheterization and minimally invasive procedures.

Volume of procedures performed by Dr. Yih-Dar Nien, MD for Medicare patients.

abdominal surgery	11
catheterization	19
doctor visit	226
gastrointestinal procedures	11
hospital care	57
inpatient care	57
minimally invasive procedures	11

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Yih-Dar Nien, MD.

**Gender**
Male	125
Female	140

**Ethnicity**
Non-Hispanic White	181
Black	14
Hispanic	53
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	119
From 75 to 84	78
85 and over	26
Less than 65	42

Conditions of Medicare patients treated by Dr. Yih-Dar Nien, MD in 2017

Hypertension	75
High Cholesterol	63
Stroke	6
Ischemic Heart Disease	43
Depression	32
Chronic Kidney Disease	43
Asthma	8
Osteoperosis	10
Atrial Fibrilation	16
Heart Failure	29
Chronic Obstructive Pulmonary Disease	27
Diabetes	43
Dementia	18
Cancer	22

Medicare Procedure and Patient Information

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Yih-Dar Nien, MD.

**Gender**
Male	113
Female	113

**Ethnicity**
Non-Hispanic White	158
Black	19
Hispanic	37
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	100
From 75 to 84	64
85 and over	16
Less than 65	46

Conditions of Medicare patients treated by Dr. Yih-Dar Nien, MD in 2018

Hypertension	75
High Cholesterol	54
Stroke	5
Ischemic Heart Disease	44
Depression	30
Chronic Kidney Disease	46
Asthma	8
Osteoperosis	12
Atrial Fibrilation	12
Heart Failure	30
Chronic Obstructive Pulmonary Disease	28
Diabetes	39
Dementia	16
Cancer	26

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Yih-Dar Nien, MD treated as a general surgeon in Lancaster, CA during 2019 were hospital care, inpatient care, minimally invasive procedures and abdominal surgery.

Volume of procedures performed by Dr. Yih-Dar Nien, MD for Medicare patients.

abdominal surgery	13
doctor visit	281
gastrointestinal procedures	13
hospital care	63
inpatient care	63
minimally invasive procedures	13
urologic procedures	11

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Yih-Dar Nien, MD.

**Gender**
Male	140
Female	155

**Ethnicity**
Non-Hispanic White	204
Black	32
Hispanic	45
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	119
From 75 to 84	93
85 and over	36
Less than 65	47

Conditions of Medicare patients treated by Dr. Yih-Dar Nien, MD in 2019

Hypertension	73
High Cholesterol	60
Stroke	6
Ischemic Heart Disease	42
Depression	24
Chronic Kidney Disease	42
Asthma	8
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	24
Chronic Obstructive Pulmonary Disease	23
Diabetes	38
Dementia	21
Cancer	24

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Yih-Dar Nien, MD treated as a general surgeon in Lancaster, CA during 2020 were hospital care, inpatient care, device removal and minimally invasive procedures.

Volume of procedures performed by Dr. Yih-Dar Nien, MD for Medicare patients.

abdominal surgery	12
device removal	15
doctor visit	170
gastrointestinal procedures	12
hospital care	27
inpatient care	27
minimally invasive procedures	12

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Yih-Dar Nien, MD.

**Gender**
Male	109
Female	87

**Ethnicity**
Non-Hispanic White	136
Black	16
Hispanic	31
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	53
85 and over	15
Less than 65	25

Conditions of Medicare patients treated by Dr. Yih-Dar Nien, MD in 2020

Hypertension	71
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	49
Depression	22
Chronic Kidney Disease	41
Asthma	7
Osteoperosis	8
Atrial Fibrilation	12
Heart Failure	26
Chronic Obstructive Pulmonary Disease	24
Diabetes	39
Dementia	17
Cancer	28

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Yih-Dar Nien, MD treated as a general surgeon in Lancaster, CA during 2021 were hospital care, inpatient care, minimally invasive procedures and abdominal surgery.

Volume of procedures performed by Dr. Yih-Dar Nien, MD for Medicare patients.

abdominal surgery	13
doctor visit	155
gastrointestinal procedures	13
hospital care	54
inpatient care	54
minimally invasive procedures	13

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Yih-Dar Nien, MD.

**Gender**
Male	117
Female	109

**Ethnicity**
Non-Hispanic White	156
Black	21
Hispanic	38
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	114
From 75 to 84	59
85 and over	19
Less than 65	34

Conditions of Medicare patients treated by Dr. Yih-Dar Nien, MD in 2021

Hypertension	73
High Cholesterol	67
Stroke	5
Ischemic Heart Disease	45
Depression	23
Chronic Kidney Disease	45
Asthma	11
Osteoperosis	9
Atrial Fibrilation	14
Heart Failure	31
Chronic Obstructive Pulmonary Disease	22
Diabetes	39
Dementia	13
Cancer	21

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Yih-Dar Nien, MD treated as a general surgeon in Lancaster, CA during 2022 were hospital care, inpatient care, minimally invasive procedures and abdominal surgery.

Volume of procedures performed by Dr. Yih-Dar Nien, MD for Medicare patients.

abdominal surgery	16
doctor visit	214
gastrointestinal procedures	16
hospital care	53
inpatient care	53
minimally invasive procedures	16

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Yih-Dar Nien, MD.

**Gender**
Male	134
Female	124

**Ethnicity**
Non-Hispanic White	176
Black	22
Hispanic	43
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	115
From 75 to 84	77
85 and over	36
Less than 65	30

Conditions of Medicare patients treated by Dr. Yih-Dar Nien, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	33
Depression	23
Chronic Kidney Disease	26
Asthma	19
Osteoperosis	16
Atrial Fibrilation	17
Heart Failure	23
Chronic Obstructive Pulmonary Disease	26
Diabetes	44
Dementia	9
Cancer	34

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Yih-Dar Nien, MD for Medicare patients.

The highest averages for the top procedures that Dr. Yih-Dar Nien, MD treated as a general surgeon in Lancaster, CA were hospital care, inpatient care, catheterization and device removal.

abdominal surgery	12
catheterization	31
device removal	15
doctor visit	198
gastrointestinal procedures	12
hospital care	80
inpatient care	80
minimally invasive procedures	12
open surgery	13
urologic procedures	11

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Yih-Dar Nien, MD.

**Gender**
Male	127
Female	138

**Ethnicity**
Black / African American	22
Asian / Pacific Islander	0
Non-Hispanic White	179
Native American / Alaskan Native	0
Hispanic	46
Other	0

**Age**
75 to 84	80
85 and over	26
Less than 65	40
65 to 74	118

Average of Total of Conditions of Medicare patients treated by Dr. Yih-Dar Nien, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Yih-Dar Nien, MD treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	67
High Cholesterol	55
Stroke	6
Ischemic Heart Disease	41
Depression	23
Chronic Kidney Disease	36
Asthma	12
Osteoporosis	10
Heart Failure	25
Chronic Obstructive Pulmonary Disease	25
Diabetes	38
Atrial Fibrillation	12
Dementia	14
Cancer	24

Education & Training

Dr. Yih-Dar Nien, MD graduated from Pontifical Catholic University of Chile in 2001. He completed residency at Marshall University, Joan C. Edwards School of Medicine and Affiliated Hospitals. He is certified by the American Board of Surgery and has a state license in California.

Medical School: Pontifical Catholic University of Chile (2001)

Residency: Marshall University, Joan C. Edwards School of Medicine and Affiliated Hospitals (2008)

Board Certification: American Board of Surgery

Licensed In: California

Affiliations & Hospitals

Dr. Yih-Dar Nien, MD is associated with these hospitals and organizations:

UCLA Health

UCLA West Valley Medical Center

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

Insurance Accepted by Provider includes:

According to our sources, Dr. Yih-Dar Nien, MD accepts the following insurance providers:

Private Healthcare Systems (PHCS)

TRICARE

Cigna

Aetna

Blue Shield of California

MultiPlan

Anthem

UnitedHealthcare

Medicare Advantage

Prime Health

First Health

HealthSmart

Health Net of California

Centivo

UFCM Health System

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General Payments

These charts describe general payments received by Dr. Yih-Dar Nien, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Intuitive Surgical, Inc.	$9,985 Da Vinci Surgical System $9,985
Davol Inc.	$556 SURGICAL $541	PHASIX $15
Medtronic USA, Inc.	$113 KYPHON Balloon Kyphoplasty $113
LIFECELL CORPORATION	$79 AlloDerm $79
Covidien Sales LLC	$51 Vessel Sealing $51
Other	$97 Endoscopy: Endocutters $29	DERMACELL $25	DARZALEX $20	CleanCision $11	$12

**Types of Payments**
Education	$9,000
Travel and Lodging	$1,003
Food and Beverage	$878

Biography

Dr. Yih-Dar Nien's specialty is general surgery. He has a special interest in laparoscopic hernia repair, bowel resection, and gallbladder problems. He is affiliated with UCLA Health. Dr. Nien obtained his medical school training at Pontifical Catholic University of Chile and performed his residency at a hospital affiliated with Marshall University, Joan C. Edwards School of Medicine. Dr. Nien can accept Anthem, UnitedHealthcare, and Blue California, as well as other insurance carriers. According to UCLA Health, new patients are welcome to contact his office in Encino, CA.