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Dr. Mark Wen Li, MD

Accepting New Patients

(Dr. Mark W. Li, M.D.)

(7 Ratings)

Specializes in: Adult Gastroenterology

University of Illinois College of Medicine at Chicago

2440 S Hacienda Boulevard Suite 105
Hacienda Heights, CA 91745

(626) 330-6003

Dr. Mark Wen Li, MD is a gastroenterologist in Hacienda Heights, CA specializing in adult gastroenterology. He graduated from University of Illinois College of Medicine at Chicago. Dr. Mark Wen Li, MD is affiliated with AHMC Healthcare, Astrana Health, Allied Pacific IPA and MARK W. LI, M.D..

Office Locations

MARK W. LI, M.D.

2440 S Hacienda Boulevard Suite 105
Hacienda Heights, CA 91745

(626) 330-6003

(626) 330-8474

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Noteworthy Medicare Patient Procedures Performed by Dr. Mark Wen Li, MD in 2023

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

Top 5%

By Affordability:

nursing home care

In 2023, Dr. Mark Wen Li, MD had a list price for nursing home care 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 25%

By Affordability:

diagnostic EGD

diagnostic upper endoscopy

EGD with biopsy

EGD with lesion removal

esophagogastroduodenoscopy

therapeutic EGD

therapeutic upper endoscopy

upper endoscopy

upper endoscopy with biopsy

upper endoscopy with lesion removal

In 2012, Dr. Mark Wen Li, MD had a list price for diagnostic EGD, diagnostic upper endoscopy, EGD with biopsy, EGD with lesion removal, esophagogastroduodenoscopy (EGD), therapeutic EGD, therapeutic upper endoscopy, upper endoscopy, upper endoscopy with biopsy, and upper endoscopy with lesion removal that was lower than the list prices billed to Medicare by 75% 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.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Mark Wen Li, MD treated as a gastroenterologist in Hacienda Heights, CA during 2012 were inpatient care, hospital care, nursing home care and gastrointestinal procedures.

Volume of procedures performed by Dr. Mark Wen Li, MD for Medicare patients.

anastomosis	19
catheterization	19
diagnostic procedures	227
doctor visit	1756
gastrointestinal procedures	300
hospital care	1393
inpatient care	1393
minimally invasive procedures	300
nursing home care	482
preventive care	84
removal of lesion (e.g. growth)	227
skin testing	11
tuberculosis (TB) testing	11
vaccines	30

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark Wen Li, MD treated as a gastroenterologist in Hacienda Heights, CA during 2013 were hospital care, inpatient care, nursing home care and minimally invasive procedures.

Volume of procedures performed by Dr. Mark Wen Li, MD for Medicare patients.

diagnostic procedures	205
doctor visit	1591
gastrointestinal procedures	229
hospital care	1394
inpatient care	1394
minimally invasive procedures	229
nursing home care	473
preventive care	59
removal of lesion (e.g. growth)	205
vaccines	35

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Wen Li, MD.

**Gender**
Male	189
Female	270

**Ethnicity**
Non-Hispanic White	150
Black	21
Hispanic	164
Asian	109
Other	0
Native American	0

**Age**
From 65 to 74	143
From 75 to 84	106
85 and over	80
Less than 65	130

Conditions of Medicare patients treated by Dr. Mark Wen Li, MD in 2013

Hypertension	73
High Cholesterol	37
Stroke	5
Ischemic Heart Disease	42
Depression	22
Chronic Kidney Disease	27
Asthma	7
Osteoperosis	13
Atrial Fibrilation	9
Heart Failure	27
Chronic Obstructive Pulmonary Disease	15
Diabetes	43
Dementia	21
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark Wen Li, MD treated as a gastroenterologist in Hacienda Heights, CA during 2014 were hospital care, inpatient care, nursing home care and minimally invasive procedures.

Volume of procedures performed by Dr. Mark Wen Li, MD for Medicare patients.

anastomosis	18
catheterization	18
diagnostic procedures	195
doctor visit	1394
gastrointestinal procedures	241
hospital care	1303
inpatient care	1303
minimally invasive procedures	241
nursing home care	452
preventive care	58
removal of lesion (e.g. growth)	195
vaccines	30

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Wen Li, MD.

**Gender**
Male	185
Female	282

**Ethnicity**
Non-Hispanic White	155
Black	13
Hispanic	161
Asian	127
Other	0
Native American	0

**Age**
From 65 to 74	161
From 75 to 84	110
85 and over	73
Less than 65	123

Conditions of Medicare patients treated by Dr. Mark Wen Li, MD in 2014

Hypertension	67
High Cholesterol	44
Stroke	4
Ischemic Heart Disease	40
Depression	18
Chronic Kidney Disease	27
Asthma	9
Osteoperosis	15
Atrial Fibrilation	6
Heart Failure	26
Chronic Obstructive Pulmonary Disease	15
Diabetes	44
Dementia	21
Cancer	8

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark Wen Li, MD treated as a gastroenterologist in Hacienda Heights, CA during 2015 were hospital care, inpatient care, nursing home care and minimally invasive procedures.

Volume of procedures performed by Dr. Mark Wen Li, MD for Medicare patients.

diagnostic procedures	237
doctor visit	1478
gastrointestinal procedures	249
hospital care	1032
inpatient care	1032
minimally invasive procedures	249
nursing home care	344
preventive care	44
removal of lesion (e.g. growth)	237
vaccines	32

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Wen Li, MD.

**Gender**
Male	380
Female	474

**Ethnicity**
Non-Hispanic White	280
Black	30
Hispanic	258
Asian	258
Other	0
Native American	0

**Age**
From 65 to 74	302
From 75 to 84	204
85 and over	140
Less than 65	208

Conditions of Medicare patients treated by Dr. Mark Wen Li, MD in 2015

Hypertension	69
High Cholesterol	46
Stroke	5
Ischemic Heart Disease	39
Depression	20
Chronic Kidney Disease	30
Asthma	15
Osteoperosis	13
Atrial Fibrilation	11
Heart Failure	26
Chronic Obstructive Pulmonary Disease	15
Diabetes	39
Dementia	21
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark Wen Li, MD treated as a gastroenterologist in Hacienda Heights, CA during 2016 were hospital care, inpatient care, nursing home care and minimally invasive procedures.

Volume of procedures performed by Dr. Mark Wen Li, MD for Medicare patients.

anastomosis	18
catheterization	18
diagnostic procedures	261
doctor visit	1462
gastrointestinal procedures	279
hospital care	1613
inpatient care	1613
minimally invasive procedures	279
nursing home care	299
preventive care	13
removal of lesion (e.g. growth)	261
vaccines	13

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Wen Li, MD.

**Gender**
Male	215
Female	256

**Ethnicity**
Non-Hispanic White	150
Black	16
Hispanic	125
Asian	165
Other	0
Native American	0

**Age**
From 65 to 74	156
From 75 to 84	120
85 and over	82
Less than 65	113

Conditions of Medicare patients treated by Dr. Mark Wen Li, MD in 2016

Hypertension	69
High Cholesterol	47
Stroke	7
Ischemic Heart Disease	42
Depression	25
Chronic Kidney Disease	39
Asthma	26
Osteoperosis	15
Atrial Fibrilation	14
Heart Failure	29
Chronic Obstructive Pulmonary Disease	24
Diabetes	44
Dementia	27
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mark Wen Li, MD treated as a gastroenterologist in Hacienda Heights, CA during 2017 were hospital care, inpatient care, nursing home care and minimally invasive procedures.

Volume of procedures performed by Dr. Mark Wen Li, MD for Medicare patients.

anastomosis	23
catheterization	23
diagnostic procedures	245
doctor visit	1103
gastrointestinal procedures	268
hospital care	1421
inpatient care	1421
minimally invasive procedures	268
nursing home care	270
removal of lesion (e.g. growth)	245

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Wen Li, MD.

**Gender**
Male	223
Female	260

**Ethnicity**
Non-Hispanic White	147
Black	23
Hispanic	125
Asian	174
Other	0
Native American	0

**Age**
From 65 to 74	156
From 75 to 84	128
85 and over	87
Less than 65	112

Conditions of Medicare patients treated by Dr. Mark Wen Li, MD in 2017

Hypertension	71
High Cholesterol	47
Stroke	6
Ischemic Heart Disease	43
Depression	25
Chronic Kidney Disease	43
Asthma	6
Osteoperosis	19
Atrial Fibrilation	13
Heart Failure	30
Chronic Obstructive Pulmonary Disease	26
Diabetes	47
Dementia	34
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mark Wen Li, MD treated as a gastroenterologist in Hacienda Heights, CA during 2018 were hospital care, inpatient care, nursing home care and minimally invasive procedures.

Volume of procedures performed by Dr. Mark Wen Li, MD for Medicare patients.

anastomosis	19
catheterization	19
diagnostic procedures	163
doctor visit	1115
gastrointestinal procedures	182
hospital care	1236
inpatient care	1236
minimally invasive procedures	182
nursing home care	326
removal of lesion (e.g. growth)	163

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Wen Li, MD.

**Gender**
Male	189
Female	214

**Ethnicity**
Non-Hispanic White	129
Black	17
Hispanic	119
Asian	127
Other	11
Native American	0

**Age**
From 65 to 74	128
From 75 to 84	97
85 and over	63
Less than 65	115

Conditions of Medicare patients treated by Dr. Mark Wen Li, MD in 2018

Hypertension	73
High Cholesterol	52
Stroke	7
Ischemic Heart Disease	43
Depression	23
Chronic Kidney Disease	43
Asthma	7
Osteoperosis	17
Atrial Fibrilation	10
Heart Failure	28
Chronic Obstructive Pulmonary Disease	22
Diabetes	45
Dementia	32
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark Wen Li, MD treated as a gastroenterologist in Hacienda Heights, CA during 2019 were hospital care, inpatient care, nursing home care and removal of lesion (e.g. growth).

Volume of procedures performed by Dr. Mark Wen Li, MD for Medicare patients.

diagnostic procedures	150
doctor visit	950
gastrointestinal procedures	150
hospital care	1190
inpatient care	1190
minimally invasive procedures	150
nursing home care	359
removal of lesion (e.g. growth)	150

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Wen Li, MD.

**Gender**
Male	146
Female	176

**Ethnicity**
Non-Hispanic White	103
Black	0
Hispanic	90
Asian	115
Other	0
Native American	0

**Age**
From 65 to 74	129
From 75 to 84	68
85 and over	45
Less than 65	80

Conditions of Medicare patients treated by Dr. Mark Wen Li, MD in 2019

Hypertension	71
High Cholesterol	45
Stroke	5
Ischemic Heart Disease	37
Depression	18
Chronic Kidney Disease	39
Asthma	8
Osteoperosis	12
Atrial Fibrilation	9
Heart Failure	25
Chronic Obstructive Pulmonary Disease	20
Diabetes	41
Dementia	25
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark Wen Li, MD treated as a gastroenterologist in Hacienda Heights, CA during 2020 were hospital care, inpatient care, nursing home care and removal of lesion (e.g. growth).

Volume of procedures performed by Dr. Mark Wen Li, MD for Medicare patients.

diagnostic procedures	97
doctor visit	836
gastrointestinal procedures	97
hospital care	533
inpatient care	533
minimally invasive procedures	97
nursing home care	216
removal of lesion (e.g. growth)	97

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Wen Li, MD.

**Gender**
Male	113
Female	142

**Ethnicity**
Non-Hispanic White	75
Black	0
Hispanic	64
Asian	100
Other	0
Native American	0

**Age**
From 65 to 74	102
From 75 to 84	60
85 and over	34
Less than 65	59

Conditions of Medicare patients treated by Dr. Mark Wen Li, MD in 2020

Hypertension	65
High Cholesterol	47
Stroke	5
Ischemic Heart Disease	35
Depression	15
Chronic Kidney Disease	35
Asthma	0
Osteoperosis	14
Atrial Fibrilation	7
Heart Failure	22
Chronic Obstructive Pulmonary Disease	11
Diabetes	37
Dementia	24
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark Wen Li, MD treated as a gastroenterologist in Hacienda Heights, CA during 2021 were nursing home care, removal of lesion (e.g. growth), minimally invasive procedures and diagnostic procedures.

Volume of procedures performed by Dr. Mark Wen Li, MD for Medicare patients.

diagnostic procedures	121
doctor visit	624
gastrointestinal procedures	121
minimally invasive procedures	121
nursing home care	183
removal of lesion (e.g. growth)	121

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Wen Li, MD.

**Gender**
Male	127
Female	115

**Ethnicity**
Non-Hispanic White	74
Black	0
Hispanic	53
Asian	100
Other	0
Native American	0

**Age**
From 65 to 74	108
From 75 to 84	53
85 and over	28
Less than 65	53

Conditions of Medicare patients treated by Dr. Mark Wen Li, MD in 2021

Hypertension	74
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	27
Depression	12
Chronic Kidney Disease	34
Asthma	5
Osteoperosis	14
Atrial Fibrilation	7
Heart Failure	19
Chronic Obstructive Pulmonary Disease	10
Diabetes	36
Dementia	19
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mark Wen Li, MD treated as a gastroenterologist in Hacienda Heights, CA during 2022 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Mark Wen Li, MD for Medicare patients.

diagnostic procedures	161
doctor visit	657
gastrointestinal procedures	161
minimally invasive procedures	161
nursing home care	158
removal of lesion (e.g. growth)	161

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Wen Li, MD.

**Gender**
Male	116
Female	132

**Ethnicity**
Non-Hispanic White	74
Black	0
Hispanic	41
Asian	119
Other	0
Native American	0

**Age**
From 65 to 74	108
From 75 to 84	62
85 and over	28
Less than 65	50

Conditions of Medicare patients treated by Dr. Mark Wen Li, MD in 2022

Hypertension	75
High Cholesterol	65
Stroke	5
Ischemic Heart Disease	17
Depression	12
Chronic Kidney Disease	20
Asthma	8
Osteoperosis	19
Atrial Fibrilation	10
Heart Failure	19
Chronic Obstructive Pulmonary Disease	10
Diabetes	33
Dementia	7
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mark Wen Li, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mark Wen Li, MD treated as a gastroenterologist in Hacienda Heights, CA were inpatient care, hospital care, nursing home care and gastrointestinal procedures.

anastomosis	19
catheterization	19
diagnostic procedures	187
doctor visit	1178
gastrointestinal procedures	207
hospital care	1235
inpatient care	1235
minimally invasive procedures	207
nursing home care	323
preventive care	51
removal of lesion (e.g. growth)	187
skin testing	11
tuberculosis (TB) testing	11
vaccines	28

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mark Wen Li, MD.

**Gender**
Male	171
Female	211

**Ethnicity**
Black / African American	10
Asian / Pacific Islander	126
Non-Hispanic White	121
Native American / Alaskan Native	0
Hispanic	109
Other	1

**Age**
75 to 84	91
85 and over	60
Less than 65	94
65 to 74	135

Average of Total of Conditions of Medicare patients treated by Dr. Mark Wen Li, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mark Wen Li, MD treated were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension	64
High Cholesterol	43
Stroke	4
Ischemic Heart Disease	33
Depression	17
Chronic Kidney Disease	30
Asthma	8
Osteoporosis	13
Heart Failure	22
Chronic Obstructive Pulmonary Disease	15
Diabetes	37
Atrial Fibrillation	8
Dementia	21
Cancer	9

Education & Training

Dr. Mark Wen Li, MD graduated from University of Illinois College of Medicine at Chicago. He completed residency at Edward Hines, Jr. VA Hospital. He is certified by the Certification: AMERICAN BOARD OF INTERNAL MEDICINE and has a state license in California.

Medical School: University of Illinois College of Medicine at Chicago

Residency: Edward Hines, Jr. VA Hospital

Board Certification: Certification: AMERICAN BOARD OF INTERNAL MEDICINE

Licensed In: California

Affiliations & Hospitals

Dr. Mark Wen Li, MD is associated with these hospitals and organizations:

AHMC Healthcare

Astrana Health

Allied Pacific IPA

MARK W. LI, M.D.

Ratings & Reviews

Dr. Mark Wen Li, MD has a high overall rating with an average of 4.14 out of 5 stars based on 7 ratings. We collect ratings and reviews of Dr. Mark Wen Li, MD from all over the web to help you find the right in Hacienda Heights, CA.

4.14

Overall Rating

(7 Ratings)

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General Payments

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

**Payments by Company**
Gilead Sciences, Inc.	$6,190 Vemlidy $5,306	Epclusa $325	$559
AstraZeneca Pharmaceuticals LP	$4,232 FARXIGA $3,403	BYDUREON $420	MOVANTIK $157	BREZTRI $129	BRILINTA $109	Other $14
Gilead Sciences Inc	$3,544 Viread $1,620	Vemlidy $579	Harvoni $334	Epclusa $210	Sovaldi $90	Other $710
Amgen Inc.	$2,076 Repatha $757	Prolia $704	Aimovig $249	EVENITY $243	Corlanor $124
Kowa Pharmaceuticals America, Inc.	$1,366 LIVALO $936	Vascepa $200	Seglentis $170	BYSTOLIC $60
Other	$8,475 Creon $1,123	ZEPATIER $1,046	Vascepa $751	APTIOM $419	INVOKANA $419	Other $4,717

**Types of Payments**
Food and Beverage	$22,333
Consulting Fee	$2,439
Travel and Lodging	$899
Education	$213

Biography

Dr. Mark Li is an adult gastroenterology specialist in Hacienda Heights, CA. He is rated highly by his patients. Dr. Li graduated from the University of Illinois College of Medicine at Chicago and then he performed his residency at Edward Hines, Jr. VA Hospital. He is conversant in Chinese. His professional affiliations include Astrana Health and AHMC Healthcare. Dr. Li welcomes new patients at his office inHACIENDA HEIGHTS, CA as reported by Astrana Health.