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Home > CA Providers > Dermatologists

Dr. Stephen Lewis Dalton, MD

(5 Ratings)

Specializes in: Dermatology (Skin Disorders)

400 Professional Center Drive Suite 414
Novato, CA 94947

(415) 892-0754

Dr. Stephen Lewis Dalton, MD is a dermatologist in Novato, CA specializing in dermatology (skin disorders).

Office Locations

400 Professional Center Drive Suite 414
Novato, CA 94947

(415) 892-0754

(415) 897-3204

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Noteworthy Medicare Patient Procedures Performed by Dr. Stephen Lewis Dalton, MD in 2023

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

Top 5%

By Volume:

KOH wet mount

In 2023, Dr. Stephen Lewis Dalton, MD performed more KOH wet mount procedures for Medicare patients than 95% of providers in related specialties within California.

Top 10%

By Volume:

removal of skin lesion

By Affordability:

intralesional injection

removal of benign skin lesion

removal of skin lesion

skin lesion destruction

skin procedures

In 2023, among providers in related specialties within California, Dr. Stephen Lewis Dalton, MD performed more removal of skin lesion (growth or mark) procedures for Medicare patients than 90% of them and he also had a list price for intralesional injection, removal of benign (non-cancerous) skin lesion, 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 90% of them. 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 Volume:

ear biopsy

incision and drainage

incision and drainage of skin abscess

By Affordability:

excisional debridement

lab tests

In 2012, among providers in related specialties within California, Dr. Stephen Lewis Dalton, MD performed more ear biopsy, incision and drainage, and incision and drainage of skin abscess (e.g. boil) procedures for Medicare patients than 75% of them and he also had a list price for excisional debridement, and lab tests that was lower than the list prices billed to Medicare by 75% of them. 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. Stephen Lewis Dalton, MD treated as a dermatologist in Novato, CA during 2012 were removal of lesion (e.g. growth), skin procedures, diagnostic procedures and abscess drainage.

Volume of procedures performed by Dr. Stephen Lewis Dalton, MD for Medicare patients.

abscess drainage	71
diagnostic procedures	641
doctor visit	2131
ear procedures	29
eye procedures	13
incision and drainage	71
injections	71
lab tests	51
minor procedures	71
removal of lesion (e.g. growth)	1849
skin procedures	1849
skin surgery	71

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Stephen Lewis Dalton, MD treated as a dermatologist in Novato, CA during 2013 were removal of lesion (e.g. growth), skin procedures, diagnostic procedures and lab tests.

Volume of procedures performed by Dr. Stephen Lewis Dalton, MD for Medicare patients.

abscess drainage	72
debridement (removal of unhealthy tissue)	26
diagnostic procedures	688
doctor visit	2246
ear procedures	38
excision	26
incision and drainage	72
injections	60
lab tests	76
minor procedures	72
removal of lesion (e.g. growth)	1883
skin procedures	1883
skin surgery	72

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen Lewis Dalton, MD.

**Gender**
Male	633
Female	581

**Ethnicity**
Non-Hispanic White	1153
Black	0
Hispanic	24
Asian	0
Other	18
Native American	0

**Age**
From 65 to 74	608
From 75 to 84	382
85 and over	178
Less than 65	46

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2013

Hypertension	55
High Cholesterol	53
Stroke	3
Ischemic Heart Disease	31
Depression	11
Chronic Kidney Disease	14
Asthma	6
Osteoperosis	5
Atrial Fibrilation	11
Heart Failure	8
Chronic Obstructive Pulmonary Disease	6
Diabetes	18
Dementia	6
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Stephen Lewis Dalton, MD treated as a dermatologist in Novato, CA during 2014 were removal of lesion (e.g. growth), skin procedures, diagnostic procedures and abscess drainage.

Volume of procedures performed by Dr. Stephen Lewis Dalton, MD for Medicare patients.

abscess drainage	106
debridement (removal of unhealthy tissue)	24
diagnostic procedures	715
doctor visit	2394
ear procedures	38
excision	24
incision and drainage	106
injections	66
lab tests	70
minor procedures	106
removal of lesion (e.g. growth)	2088
skin procedures	2088
skin surgery	106

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen Lewis Dalton, MD.

**Gender**
Male	663
Female	612

**Ethnicity**
Non-Hispanic White	1190
Black	0
Hispanic	31
Asian	0
Other	36
Native American	0

**Age**
From 65 to 74	631
From 75 to 84	405
85 and over	197
Less than 65	42

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2014

Hypertension	52
High Cholesterol	48
Stroke	4
Ischemic Heart Disease	32
Depression	10
Chronic Kidney Disease	14
Asthma	6
Osteoperosis	6
Atrial Fibrilation	13
Heart Failure	9
Chronic Obstructive Pulmonary Disease	5
Diabetes	17
Dementia	7
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Stephen Lewis Dalton, MD treated as a dermatologist in Novato, CA during 2015 were removal of lesion (e.g. growth), skin procedures, diagnostic procedures and abscess drainage.

Volume of procedures performed by Dr. Stephen Lewis Dalton, MD for Medicare patients.

abscess drainage	78
diagnostic procedures	714
doctor visit	2284
ear procedures	33
eye procedures	13
incision and drainage	78
injections	56
lab tests	67
minor procedures	78
removal of lesion (e.g. growth)	1977
skin procedures	1977
skin surgery	78

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen Lewis Dalton, MD.

**Gender**
Male	1282
Female	1006

**Ethnicity**
Non-Hispanic White	2134
Black	0
Hispanic	50
Asian	0
Other	60
Native American	0

**Age**
From 65 to 74	1118
From 75 to 84	768
85 and over	336
Less than 65	66

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2015

Hypertension	51
High Cholesterol	52
Stroke	3
Ischemic Heart Disease	30
Depression	12
Chronic Kidney Disease	15
Asthma	8
Osteoperosis	6
Atrial Fibrilation	12
Heart Failure	9
Chronic Obstructive Pulmonary Disease	8
Diabetes	17
Dementia	6
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Stephen Lewis Dalton, MD treated as a dermatologist in Novato, CA during 2016 were removal of lesion (e.g. growth), skin procedures, diagnostic procedures and abscess drainage.

Volume of procedures performed by Dr. Stephen Lewis Dalton, MD for Medicare patients.

abscess drainage	94
diagnostic procedures	777
doctor visit	2296
ear procedures	37
incision and drainage	94
injections	46
lab tests	58
minor procedures	94
removal of lesion (e.g. growth)	2027
skin procedures	2027
skin surgery	94

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen Lewis Dalton, MD.

**Gender**
Male	664
Female	495

**Ethnicity**
Non-Hispanic White	1079
Black	0
Hispanic	26
Asian	0
Other	36
Native American	0

**Age**
From 65 to 74	530
From 75 to 84	422
85 and over	172
Less than 65	35

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2016

Hypertension	53
High Cholesterol	52
Stroke	3
Ischemic Heart Disease	29
Depression	10
Chronic Kidney Disease	17
Asthma	11
Osteoperosis	6
Atrial Fibrilation	11
Heart Failure	9
Chronic Obstructive Pulmonary Disease	8
Diabetes	17
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Stephen Lewis Dalton, MD treated as a dermatologist in Novato, CA during 2017 were removal of lesion (e.g. growth), skin procedures, diagnostic procedures and abscess drainage.

Volume of procedures performed by Dr. Stephen Lewis Dalton, MD for Medicare patients.

abscess drainage	83
diagnostic procedures	782
doctor visit	2442
ear procedures	36
incision and drainage	83
injections	58
lab tests	77
minor procedures	83
removal of lesion (e.g. growth)	2125
skin procedures	2125
skin surgery	83

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen Lewis Dalton, MD.

**Gender**
Male	724
Female	542

**Ethnicity**
Non-Hispanic White	1175
Black	0
Hispanic	25
Asian	0
Other	45
Native American	0

**Age**
From 65 to 74	589
From 75 to 84	482
85 and over	165
Less than 65	30

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2017

Hypertension	54
High Cholesterol	48
Stroke	4
Ischemic Heart Disease	28
Depression	11
Chronic Kidney Disease	18
Asthma	7
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	9
Chronic Obstructive Pulmonary Disease	7
Diabetes	17
Dementia	7
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Stephen Lewis Dalton, MD treated as a dermatologist in Novato, CA during 2018 were removal of lesion (e.g. growth), skin procedures, diagnostic procedures and abscess drainage.

Volume of procedures performed by Dr. Stephen Lewis Dalton, MD for Medicare patients.

abscess drainage	77
diagnostic procedures	787
doctor visit	2500
ear procedures	35
eye procedures	12
incision and drainage	77
injections	48
lab tests	61
minor procedures	77
removal of lesion (e.g. growth)	2086
skin procedures	2086
skin surgery	77

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen Lewis Dalton, MD.

**Gender**
Male	748
Female	591

**Ethnicity**
Non-Hispanic White	1247
Black	0
Hispanic	32
Asian	0
Other	39
Native American	0

**Age**
From 65 to 74	598
From 75 to 84	517
85 and over	180
Less than 65	44

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2018

Hypertension	53
High Cholesterol	57
Stroke	4
Ischemic Heart Disease	28
Depression	13
Chronic Kidney Disease	19
Asthma	6
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	9
Chronic Obstructive Pulmonary Disease	7
Diabetes	16
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Stephen Lewis Dalton, MD treated as a dermatologist in Novato, CA during 2019 were removal of lesion (e.g. growth), skin procedures, lab tests and abscess drainage.

Volume of procedures performed by Dr. Stephen Lewis Dalton, MD for Medicare patients.

abscess drainage	89
debridement (removal of unhealthy tissue)	28
diagnostic procedures	37
doctor visit	2379
ear procedures	37
excision	28
incision and drainage	89
injections	59
lab tests	96
minor procedures	89
removal of lesion (e.g. growth)	1987
skin procedures	1987
skin surgery	89

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen Lewis Dalton, MD.

**Gender**
Male	720
Female	556

**Ethnicity**
Non-Hispanic White	1175
Black	0
Hispanic	32
Asian	0
Other	51
Native American	0

**Age**
From 65 to 74	553
From 75 to 84	524
85 and over	167
Less than 65	32

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2019

Hypertension	53
High Cholesterol	54
Stroke	3
Ischemic Heart Disease	26
Depression	15
Chronic Kidney Disease	18
Asthma	6
Osteoperosis	8
Atrial Fibrilation	12
Heart Failure	9
Chronic Obstructive Pulmonary Disease	7
Diabetes	16
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Stephen Lewis Dalton, MD treated as a dermatologist in Novato, CA during 2020 were removal of lesion (e.g. growth), skin procedures, minor procedures and abscess drainage.

Volume of procedures performed by Dr. Stephen Lewis Dalton, MD for Medicare patients.

abscess drainage	75
debridement (removal of unhealthy tissue)	52
diagnostic procedures	41
doctor visit	1977
ear procedures	30
excision	52
eye procedures	11
incision and drainage	75
injections	46
lab tests	53
minor procedures	86
removal of lesion (e.g. growth)	1745
skin procedures	1745
skin surgery	75
wound repair (e.g. stitches)	11

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen Lewis Dalton, MD.

**Gender**
Male	639
Female	474

**Ethnicity**
Non-Hispanic White	1032
Black	0
Hispanic	17
Asian	0
Other	48
Native American	0

**Age**
From 65 to 74	467
From 75 to 84	460
85 and over	165
Less than 65	21

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2020

Hypertension	50
High Cholesterol	49
Stroke	3
Ischemic Heart Disease	25
Depression	14
Chronic Kidney Disease	18
Asthma	5
Osteoperosis	6
Atrial Fibrilation	11
Heart Failure	9
Chronic Obstructive Pulmonary Disease	5
Diabetes	16
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Stephen Lewis Dalton, MD treated as a dermatologist in Novato, CA during 2021 were removal of lesion (e.g. growth), skin procedures, abscess drainage and minor procedures.

Volume of procedures performed by Dr. Stephen Lewis Dalton, MD for Medicare patients.

abscess drainage	90
debridement (removal of unhealthy tissue)	29
diagnostic procedures	47
doctor visit	2385
ear procedures	47
excision	29
incision and drainage	90
injections	50
lab tests	46
minor procedures	90
removal of lesion (e.g. growth)	2175
skin procedures	2175
skin surgery	90

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen Lewis Dalton, MD.

**Gender**
Male	728
Female	675

**Ethnicity**
Non-Hispanic White	1282
Black	0
Hispanic	31
Asian	0
Other	63
Native American	0

**Age**
From 65 to 74	595
From 75 to 84	571
85 and over	218
Less than 65	19

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2021

Hypertension	53
High Cholesterol	60
Stroke	3
Ischemic Heart Disease	26
Depression	14
Chronic Kidney Disease	17
Asthma	6
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	8
Chronic Obstructive Pulmonary Disease	5
Diabetes	14
Dementia	5
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Stephen Lewis Dalton, MD treated as a dermatologist in Novato, CA during 2022 were removal of lesion (e.g. growth), skin procedures, abscess drainage and minor procedures.

Volume of procedures performed by Dr. Stephen Lewis Dalton, MD for Medicare patients.

abscess drainage	95
diagnostic procedures	32
doctor visit	2273
ear procedures	32
incision and drainage	95
injections	48
lab tests	44
minor procedures	95
removal of lesion (e.g. growth)	2041
skin procedures	2041
skin surgery	95

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen Lewis Dalton, MD.

**Gender**
Male	715
Female	590

**Ethnicity**
Non-Hispanic White	1187
Black	0
Hispanic	27
Asian	0
Other	71
Native American	0

**Age**
From 65 to 74	505
From 75 to 84	582
85 and over	194
Less than 65	24

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2022

Hypertension	64
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	23
Depression	12
Chronic Kidney Disease	16
Asthma	8
Osteoperosis	15
Atrial Fibrilation	16
Heart Failure	9
Chronic Obstructive Pulmonary Disease	6
Diabetes	16
Dementia	4
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Stephen Lewis Dalton, MD for Medicare patients.

The highest averages for the top procedures that Dr. Stephen Lewis Dalton, MD treated as a dermatologist in Novato, CA were removal of lesion (e.g. growth), skin procedures, diagnostic procedures and minor procedures.

abscess drainage	84
debridement (removal of unhealthy tissue)	31
diagnostic procedures	478
doctor visit	2300
ear procedures	35
excision	31
eye procedures	12
incision and drainage	84
injections	55
lab tests	63
minor procedures	85
removal of lesion (e.g. growth)	1998
skin procedures	1998
skin surgery	84
wound repair (e.g. stitches)	11

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Stephen Lewis Dalton, MD.

**Gender**
Male	683
Female	556

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	1150
Native American / Alaskan Native	0
Hispanic	26
Other	42

**Age**
75 to 84	464
85 and over	179
Less than 65	32
65 to 74	563

Average of Total of Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Stephen Lewis Dalton, MD treated were high cholesterol, hypertension, ischemic heart disease and chronic kidney disease.

Hypertension	48
High Cholesterol	49
Stroke	3
Ischemic Heart Disease	25
Depression	11
Chronic Kidney Disease	15
Asthma	6
Osteoporosis	7
Heart Failure	8
Chronic Obstructive Pulmonary Disease	5
Diabetes	14
Atrial Fibrillation	10
Dementia	6
Cancer	10

Education & Training

He has a state license in California.

Licensed In: California

Ratings & Reviews

Dr. Stephen Lewis Dalton, MD has a good overall rating with an average of 2.6 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. Stephen Lewis Dalton, MD from all over the web to help you find the right in Novato, CA.

2.6

Overall Rating

(5 Ratings)

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General Payments

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

**Payments by Company**
Novartis Pharmaceuticals Corporation	$606 COSENTYX $517	XOLAIR $89
AbbVie Inc.	$509 Skyrizi $353	Rinvoq $78	Humira $71	$7
AbbVie, Inc.	$264 Humira $133	Skyrizi $131
Janssen Biotech, Inc.	$161 Tremfya $112	STELARA $30	SIMPONI ARIA $19
Pfizer Inc.	$141 EUCRISA $110	CIBINQO $31
Other	$1,136 TALTZ $134	DUPIXENT $108	SPEVIGO $68	DUPIXENT DUPILUMAB INJECTION $67	Otezla $60	Other $699

**Types of Payments**
Food and Beverage	$2,710
Education	$107

Biography

Dr. Stephen Dalton works as a dermatology (skin disorders). He attended medical school at Columbia University, College of Physicians and Surgeons. He has a 2.5 out of 5 star average patient rating.

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Dr. Stephen Lewis Dalton, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Stephen Lewis Dalton, MD in 2023

By Volume:

By Volume:

By Affordability:

By Volume:

By Affordability:

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. Stephen Lewis Dalton, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Stephen Lewis Dalton, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

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