In 2012, Dr. Tommy Ho-Yin Chen, MD had a list price for removal of skin lesion (growth or mark), skin lesion destruction (e.g. laser surgery), and skin procedures 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. Tommy Ho-Yin Chen, MD treated as a dermatologist in Pasadena, CA during 2012 were phototherapy (light therapy), diagnostic procedures, removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Tommy Ho-Yin Chen, MD for Medicare patients.

abscess drainage	22
diagnostic procedures	159
doctor visit	894
incision and drainage	22
lab tests	11
minor procedures	22
phototherapy (light therapy)	297
removal of lesion (e.g. growth)	136
skin procedures	136
skin surgery	22

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Tommy Ho-Yin Chen, MD treated as a dermatologist in Pasadena, CA during 2013 were phototherapy (light therapy), removal of lesion (e.g. growth), skin procedures and diagnostic procedures.

Volume of procedures performed by Dr. Tommy Ho-Yin Chen, MD for Medicare patients.

abscess drainage	18
diagnostic procedures	149
doctor visit	716
incision and drainage	18
minor procedures	18
phototherapy (light therapy)	216
removal of lesion (e.g. growth)	149
skin procedures	149
skin surgery	18

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD.

**Gender**
Male	188
Female	146

**Ethnicity**
Non-Hispanic White	198
Black	0
Hispanic	60
Asian	64
Other	0
Native American	0

**Age**
From 65 to 74	140
From 75 to 84	116
85 and over	63
Less than 65	15

Conditions of Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD in 2013

Hypertension	71
High Cholesterol	57
Stroke	4
Ischemic Heart Disease	37
Depression	10
Chronic Kidney Disease	20
Asthma	7
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	18
Chronic Obstructive Pulmonary Disease	11
Diabetes	31
Dementia	10
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Tommy Ho-Yin Chen, MD treated as a dermatologist in Pasadena, CA during 2014 were removal of lesion (e.g. growth), skin procedures, diagnostic procedures and abscess drainage.

Volume of procedures performed by Dr. Tommy Ho-Yin Chen, MD for Medicare patients.

abscess drainage	22
diagnostic procedures	177
doctor visit	878
incision and drainage	22
minor procedures	22
removal of lesion (e.g. growth)	182
skin procedures	182
skin surgery	22

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD.

**Gender**
Male	192
Female	169

**Ethnicity**
Non-Hispanic White	189
Black	0
Hispanic	76
Asian	82
Other	0
Native American	0

**Age**
From 65 to 74	140
From 75 to 84	120
85 and over	85
Less than 65	16

Conditions of Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD in 2014

Hypertension	68
High Cholesterol	59
Stroke	4
Ischemic Heart Disease	39
Depression	12
Chronic Kidney Disease	24
Asthma	6
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	18
Chronic Obstructive Pulmonary Disease	10
Diabetes	34
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Tommy Ho-Yin Chen, MD treated as a dermatologist in Pasadena, CA during 2015 were phototherapy (light therapy), diagnostic procedures, removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Tommy Ho-Yin Chen, MD for Medicare patients.

abscess drainage	27
diagnostic procedures	186
doctor visit	907
incision and drainage	27
minor procedures	27
phototherapy (light therapy)	246
removal of lesion (e.g. growth)	127
skin procedures	127
skin surgery	27

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD.

**Gender**
Male	394
Female	304

**Ethnicity**
Non-Hispanic White	378
Black	0
Hispanic	148
Asian	136
Other	0
Native American	0

**Age**
From 65 to 74	262
From 75 to 84	232
85 and over	168
Less than 65	36

Conditions of Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD in 2015

Hypertension	68
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	41
Depression	13
Chronic Kidney Disease	24
Asthma	9
Osteoperosis	12
Atrial Fibrilation	10
Heart Failure	19
Chronic Obstructive Pulmonary Disease	10
Diabetes	32
Dementia	11
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Tommy Ho-Yin Chen, MD treated as a dermatologist in Pasadena, CA during 2016 were phototherapy (light therapy), diagnostic procedures, removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Tommy Ho-Yin Chen, MD for Medicare patients.

abscess drainage	15
diagnostic procedures	171
doctor visit	838
incision and drainage	15
injections	18
minor procedures	15
phototherapy (light therapy)	214
removal of lesion (e.g. growth)	124
skin procedures	124
skin surgery	15

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD.

**Gender**
Male	190
Female	173

**Ethnicity**
Non-Hispanic White	186
Black	0
Hispanic	86
Asian	72
Other	0
Native American	0

**Age**
From 65 to 74	145
From 75 to 84	121
85 and over	80
Less than 65	17

Conditions of Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD in 2016

Hypertension	68
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	34
Depression	14
Chronic Kidney Disease	27
Asthma	13
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	11
Diabetes	37
Dementia	9
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Tommy Ho-Yin Chen, MD treated as a dermatologist in Pasadena, CA during 2017 were diagnostic procedures, phototherapy (light therapy), removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Tommy Ho-Yin Chen, MD for Medicare patients.

abscess drainage	20
diagnostic procedures	188
doctor visit	780
incision and drainage	20
minor procedures	20
phototherapy (light therapy)	167
removal of lesion (e.g. growth)	143
skin procedures	143
skin surgery	20

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD.

**Gender**
Male	189
Female	187

**Ethnicity**
Non-Hispanic White	174
Black	0
Hispanic	78
Asian	101
Other	0
Native American	0

**Age**
From 65 to 74	154
From 75 to 84	119
85 and over	90
Less than 65	13

Conditions of Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD in 2017

Hypertension	69
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	38
Depression	16
Chronic Kidney Disease	33
Asthma	7
Osteoperosis	13
Atrial Fibrilation	9
Heart Failure	17
Chronic Obstructive Pulmonary Disease	8
Diabetes	35
Dementia	10
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Tommy Ho-Yin Chen, MD treated as a dermatologist in Pasadena, CA during 2018 were diagnostic procedures, removal of lesion (e.g. growth), skin procedures and abscess drainage.

Volume of procedures performed by Dr. Tommy Ho-Yin Chen, MD for Medicare patients.

abscess drainage	13
diagnostic procedures	158
doctor visit	814
incision and drainage	13
minor procedures	13
removal of lesion (e.g. growth)	110
skin procedures	110
skin surgery	13

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD.

**Gender**
Male	161
Female	157

**Ethnicity**
Non-Hispanic White	139
Black	0
Hispanic	65
Asian	87
Other	0
Native American	0

**Age**
From 65 to 74	148
From 75 to 84	105
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD in 2018

Hypertension	70
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	37
Depression	14
Chronic Kidney Disease	29
Asthma	6
Osteoperosis	17
Atrial Fibrilation	9
Heart Failure	15
Chronic Obstructive Pulmonary Disease	8
Diabetes	29
Dementia	9
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Tommy Ho-Yin Chen, MD treated as a dermatologist in Pasadena, CA during 2019 were phototherapy (light therapy), removal of lesion (e.g. growth), skin procedures and abscess drainage.

Volume of procedures performed by Dr. Tommy Ho-Yin Chen, MD for Medicare patients.

abscess drainage	12
doctor visit	848
incision and drainage	12
minor procedures	12
phototherapy (light therapy)	302
removal of lesion (e.g. growth)	91
skin procedures	91
skin surgery	12

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD.

**Gender**
Male	155
Female	152

**Ethnicity**
Non-Hispanic White	150
Black	0
Hispanic	52
Asian	82
Other	0
Native American	0

**Age**
From 65 to 74	134
From 75 to 84	116
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD in 2019

Hypertension	67
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	32
Depression	11
Chronic Kidney Disease	29
Asthma	6
Osteoperosis	11
Atrial Fibrilation	7
Heart Failure	14
Chronic Obstructive Pulmonary Disease	10
Diabetes	32
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Tommy Ho-Yin Chen, MD treated as a dermatologist in Pasadena, CA during 2020 were removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Tommy Ho-Yin Chen, MD for Medicare patients.

doctor visit	680
removal of lesion (e.g. growth)	67
skin procedures	67

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD.

**Gender**
Male	131
Female	107

**Ethnicity**
Non-Hispanic White	102
Black	0
Hispanic	48
Asian	67
Other	0
Native American	0

**Age**
From 65 to 74	107
From 75 to 84	86
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD in 2020

Hypertension	63
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	32
Depression	13
Chronic Kidney Disease	26
Asthma	5
Osteoperosis	7
Atrial Fibrilation	8
Heart Failure	12
Chronic Obstructive Pulmonary Disease	5
Diabetes	31
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Tommy Ho-Yin Chen, MD treated as a dermatologist in Pasadena, CA during 2021 were removal of lesion (e.g. growth), skin procedures, abscess drainage and minor procedures.

Volume of procedures performed by Dr. Tommy Ho-Yin Chen, MD for Medicare patients.

abscess drainage	11
doctor visit	816
incision and drainage	11
minor procedures	11
removal of lesion (e.g. growth)	98
skin procedures	98
skin surgery	11

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD.

**Gender**
Male	138
Female	106

**Ethnicity**
Non-Hispanic White	103
Black	0
Hispanic	44
Asian	69
Other	0
Native American	0

**Age**
From 65 to 74	113
From 75 to 84	93
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD in 2021

Hypertension	68
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	36
Depression	10
Chronic Kidney Disease	30
Asthma	10
Osteoperosis	11
Atrial Fibrilation	5
Heart Failure	12
Chronic Obstructive Pulmonary Disease	10
Diabetes	33
Dementia	8
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Tommy Ho-Yin Chen, MD treated as a dermatologist in Pasadena, CA during 2022 were removal of lesion (e.g. growth) and skin procedures.

Volume of procedures performed by Dr. Tommy Ho-Yin Chen, MD for Medicare patients.

doctor visit	632
removal of lesion (e.g. growth)	69
skin procedures	69

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD.

**Gender**
Male	115
Female	92

**Ethnicity**
Non-Hispanic White	94
Black	0
Hispanic	42
Asian	54
Other	0
Native American	0

**Age**
From 65 to 74	85
From 75 to 84	81
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	23
Depression	13
Chronic Kidney Disease	22
Asthma	12
Osteoperosis	16
Atrial Fibrilation	12
Heart Failure	11
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Dementia	0
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Tommy Ho-Yin Chen, MD for Medicare patients.

The highest averages for the top procedures that Dr. Tommy Ho-Yin Chen, MD treated as a dermatologist in Pasadena, CA were phototherapy (light therapy), diagnostic procedures, removal of lesion (e.g. growth) and skin procedures.

abscess drainage	17
diagnostic procedures	169
doctor visit	800
incision and drainage	17
injections	18
lab tests	11
minor procedures	17
phototherapy (light therapy)	240
removal of lesion (e.g. growth)	117
skin procedures	117
skin surgery	17

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD.

**Gender**
Male	168
Female	144

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	74
Non-Hispanic White	155
Native American / Alaskan Native	0
Hispanic	63
Other	0

**Age**
75 to 84	108
85 and over	44
Less than 65	8
65 to 74	129

Average of Total of Conditions of Medicare patients treated by Dr. Tommy Ho-Yin Chen, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Tommy Ho-Yin Chen, MD treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	62
High Cholesterol	53
Stroke	1
Ischemic Heart Disease	31
Depression	11
Chronic Kidney Disease	24
Asthma	7
Osteoporosis	10
Heart Failure	14
Chronic Obstructive Pulmonary Disease	8
Diabetes	29
Atrial Fibrillation	8
Dementia	7
Cancer	10

Education & Training

He has a state license in California.

Licensed In: California

Ratings & Reviews

Dr. Tommy Ho-Yin Chen, MD has a high overall rating with an average of 4.0 out of 5 stars based on 16 ratings. We collect ratings and reviews of Dr. Tommy Ho-Yin Chen, MD from all over the web to help you find the right in Pasadena, CA.

Overall Rating

(16 Ratings)

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General Payments

These charts describe general payments received by Dr. Tommy Ho-Yin Chen, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
AbbVie, Inc.	$1,763 Humira $1,679	Skyrizi $84
Taro Pharmaceuticals USA, Inc.	$906 Topicort $518	Topicort Spray $302	$86
Galderma Laboratories, L.P.	$716 MIRVASO GEL $684	$32
Novartis Pharmaceuticals Corporation	$398 COSENTYX $248	XOLAIR $150
Celgene Corporation	$320 Otezla $265	Abraxane $14	$41
Other	$1,133 VTAMA $194	Vascular $140	VALCHLOR MECHLORETHAMINE $127	STELARA $126	DUPIXENT $122	Other $424

**Types of Payments**
Food and Beverage	$4,406
Consulting Fee	$500
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$250
Education	$79

Biography

Dr. Tommy Chen is a specialist in dermatology (skin disorders). He graduated from Emory University School of Medicine. The average patient rating for Dr. Chen is 4.0 stars (out of 5).