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Dr. Mai Brooks, MD

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Specializes in: General Surgery and Surgical Oncology (Cancer Surgery)

2190 Lynn Road Suite 200
Thousand Oaks, CA 91360

(805) 379-4677

Dr. Mai Brooks, MD is a general surgeon in Thousand Oaks, CA specializing in general surgery and surgical oncology (cancer surgery). Dr. Mai Brooks, MD is affiliated with Mai Brooks, MD.

Office Locations

2190 Lynn Road Suite 200
Thousand Oaks, CA 91360

(805) 379-4677

(805) 495-1829

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Noteworthy Medicare Patient Procedures Performed by Dr. Mai Brooks, MD in 2023

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

Top 5%

By Volume:

adjacent tissue transfer

breast cancer surgery

excision

excisional breast biopsy without margin

mastectomy for breast cancer

open biopsy

open lymph node biopsy

In 2023, Dr. Mai Brooks, MD performed more adjacent tissue transfer, breast cancer surgery, excision, excisional breast biopsy without margin (surrounding tissue), mastectomy for breast cancer, open biopsy, and open lymph node biopsy procedures for Medicare patients than 95% of providers in related specialties within California.

Top 10%

By Volume:

biopsy

breast procedures

In 2023, Dr. Mai Brooks, MD performed more biopsy, and breast procedures procedures for Medicare patients than 90% of providers in related specialties within California.

Top 25%

By Volume:

lymph node procedures

In 2012, Dr. Mai Brooks, MD performed more lymph node procedures procedures for Medicare patients than 75% of providers in related specialties within California.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Mai Brooks, MD treated as a general surgeon in Thousand Oaks, CA during 2012 were open surgery, diagnostic procedures, excision and lymph node procedures.

Volume of procedures performed by Dr. Mai Brooks, MD for Medicare patients.

breast procedures	29
diagnostic procedures	47
doctor visit	244
excision	47
lymph node procedures	44
open surgery	47

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mai Brooks, MD treated as a general surgeon in Thousand Oaks, CA during 2013 were excision, lymph node procedures, breast procedures and open surgery.

Volume of procedures performed by Dr. Mai Brooks, MD for Medicare patients.

breast procedures	45
cancer surgery	18
diagnostic procedures	43
dissection	14
doctor visit	280
excision	75
lymph node procedures	56
open surgery	43

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mai Brooks, MD.

**Gender**
Male	16
Female	186

**Ethnicity**
Non-Hispanic White	170
Black	0
Hispanic	17
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	101
From 75 to 84	64
85 and over	20
Less than 65	17

Conditions of Medicare patients treated by Dr. Mai Brooks, MD in 2013

Hypertension	62
High Cholesterol	57
Stroke	0
Ischemic Heart Disease	30
Depression	18
Chronic Kidney Disease	10
Asthma	8
Osteoperosis	18
Atrial Fibrilation	8
Heart Failure	10
Chronic Obstructive Pulmonary Disease	0
Diabetes	22
Dementia	0
Cancer	62

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mai Brooks, MD treated as a general surgeon in Thousand Oaks, CA during 2014 were excision, breast procedures, open surgery and diagnostic procedures.

Volume of procedures performed by Dr. Mai Brooks, MD for Medicare patients.

breast procedures	42
cancer surgery	16
diagnostic procedures	39
doctor visit	347
excision	55
lymph node procedures	34
open surgery	39
plastic surgery procedures	19
reconstructive surgery	19
tissue transfer	19
wound repair (e.g. stitches)	19

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mai Brooks, MD.

**Gender**
Male	20
Female	224

**Ethnicity**
Non-Hispanic White	203
Black	0
Hispanic	21
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	129
From 75 to 84	78
85 and over	22
Less than 65	15

Conditions of Medicare patients treated by Dr. Mai Brooks, MD in 2014

Hypertension	59
High Cholesterol	57
Stroke	5
Ischemic Heart Disease	31
Depression	21
Chronic Kidney Disease	8
Asthma	8
Osteoperosis	18
Atrial Fibrilation	5
Heart Failure	11
Chronic Obstructive Pulmonary Disease	5
Diabetes	23
Dementia	5
Cancer	60

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mai Brooks, MD treated as a general surgeon in Thousand Oaks, CA during 2015 were excision, open surgery, diagnostic procedures and lymph node procedures.

Volume of procedures performed by Dr. Mai Brooks, MD for Medicare patients.

breast procedures	46
cancer surgery	18
diagnostic procedures	51
doctor visit	400
excision	69
lymph node procedures	48
open surgery	51
plastic surgery procedures	35
reconstructive surgery	35
tissue transfer	35
wound repair (e.g. stitches)	35

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mai Brooks, MD.

**Gender**
Male	52
Female	524

**Ethnicity**
Non-Hispanic White	492
Black	0
Hispanic	48
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	334
From 75 to 84	150
85 and over	60
Less than 65	32

Conditions of Medicare patients treated by Dr. Mai Brooks, MD in 2015

Hypertension	57
High Cholesterol	55
Stroke	5
Ischemic Heart Disease	29
Depression	21
Chronic Kidney Disease	14
Asthma	10
Osteoperosis	17
Atrial Fibrilation	7
Heart Failure	12
Chronic Obstructive Pulmonary Disease	7
Diabetes	23
Dementia	6
Cancer	57

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mai Brooks, MD treated as a general surgeon in Thousand Oaks, CA during 2016 were excision, open surgery, diagnostic procedures and lymph node procedures.

Volume of procedures performed by Dr. Mai Brooks, MD for Medicare patients.

breast procedures	54
cancer surgery	23
diagnostic procedures	60
doctor visit	452
excision	83
lymph node procedures	55
open surgery	60
plastic surgery procedures	34
reconstructive surgery	34
tissue transfer	34
wound repair (e.g. stitches)	34

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mai Brooks, MD.

**Gender**
Male	26
Female	292

**Ethnicity**
Non-Hispanic White	265
Black	0
Hispanic	24
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	168
From 75 to 84	103
85 and over	28
Less than 65	19

Conditions of Medicare patients treated by Dr. Mai Brooks, MD in 2016

Hypertension	57
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	30
Depression	21
Chronic Kidney Disease	14
Asthma	12
Osteoperosis	19
Atrial Fibrilation	8
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	21
Dementia	5
Cancer	61

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mai Brooks, MD treated as a general surgeon in Thousand Oaks, CA during 2017 were excision, breast procedures, open surgery and diagnostic procedures.

Volume of procedures performed by Dr. Mai Brooks, MD for Medicare patients.

breast procedures	79
cancer surgery	44
diagnostic procedures	68
doctor visit	516
excision	112
lymph node procedures	65
open surgery	68
plastic surgery procedures	41
reconstructive surgery	41
tissue transfer	41
wound repair (e.g. stitches)	41

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mai Brooks, MD.

**Gender**
Male	25
Female	348

**Ethnicity**
Non-Hispanic White	305
Black	0
Hispanic	32
Asian	16
Other	0
Native American	0

**Age**
From 65 to 74	198
From 75 to 84	110
85 and over	43
Less than 65	22

Conditions of Medicare patients treated by Dr. Mai Brooks, MD in 2017

Hypertension	55
High Cholesterol	46
Stroke	4
Ischemic Heart Disease	27
Depression	20
Chronic Kidney Disease	18
Asthma	9
Osteoperosis	21
Atrial Fibrilation	7
Heart Failure	11
Chronic Obstructive Pulmonary Disease	9
Diabetes	20
Dementia	5
Cancer	60

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mai Brooks, MD treated as a general surgeon in Thousand Oaks, CA during 2018 were excision, breast procedures, open surgery and diagnostic procedures.

Volume of procedures performed by Dr. Mai Brooks, MD for Medicare patients.

breast procedures	109
cancer surgery	64
diagnostic procedures	84
doctor visit	653
excision	148
lymph node procedures	74
open surgery	84
plastic surgery procedures	71
reconstructive surgery	71
tissue transfer	71
wound repair (e.g. stitches)	71

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mai Brooks, MD.

**Gender**
Male	27
Female	439

**Ethnicity**
Non-Hispanic White	384
Black	0
Hispanic	38
Asian	23
Other	0
Native American	0

**Age**
From 65 to 74	245
From 75 to 84	146
85 and over	0
Less than 65	27

Conditions of Medicare patients treated by Dr. Mai Brooks, MD in 2018

Hypertension	58
High Cholesterol	57
Stroke	3
Ischemic Heart Disease	27
Depression	19
Chronic Kidney Disease	17
Asthma	10
Osteoperosis	18
Atrial Fibrilation	8
Heart Failure	8
Chronic Obstructive Pulmonary Disease	10
Diabetes	20
Dementia	5
Cancer	58

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mai Brooks, MD treated as a general surgeon in Thousand Oaks, CA during 2019 were excision, lymph node procedures, breast procedures and open surgery.

Volume of procedures performed by Dr. Mai Brooks, MD for Medicare patients.

breast procedures	73
cancer surgery	42
diagnostic procedures	71
doctor visit	686
excision	113
lymph node procedures	77
open surgery	71
plastic surgery procedures	60
reconstructive surgery	60
tissue transfer	60
wound repair (e.g. stitches)	60

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mai Brooks, MD.

**Gender**
Male	27
Female	446

**Ethnicity**
Non-Hispanic White	394
Black	0
Hispanic	32
Asian	24
Other	0
Native American	0

**Age**
From 65 to 74	262
From 75 to 84	146
85 and over	54
Less than 65	11

Conditions of Medicare patients treated by Dr. Mai Brooks, MD in 2019

Hypertension	61
High Cholesterol	62
Stroke	4
Ischemic Heart Disease	26
Depression	17
Chronic Kidney Disease	18
Asthma	9
Osteoperosis	20
Atrial Fibrilation	8
Heart Failure	10
Chronic Obstructive Pulmonary Disease	9
Diabetes	21
Dementia	5
Cancer	60

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mai Brooks, MD treated as a general surgeon in Thousand Oaks, CA during 2020 were excision, breast procedures, reconstructive surgery and plastic surgery procedures.

Volume of procedures performed by Dr. Mai Brooks, MD for Medicare patients.

breast procedures	79
cancer surgery	47
diagnostic procedures	63
doctor visit	677
excision	110
lymph node procedures	64
open surgery	63
plastic surgery procedures	69
reconstructive surgery	69
tissue transfer	69
wound repair (e.g. stitches)	69

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mai Brooks, MD.

**Gender**
Male	28
Female	443

**Ethnicity**
Non-Hispanic White	400
Black	0
Hispanic	34
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	248
From 75 to 84	168
85 and over	42
Less than 65	13

Conditions of Medicare patients treated by Dr. Mai Brooks, MD in 2020

Hypertension	61
High Cholesterol	62
Stroke	3
Ischemic Heart Disease	25
Depression	19
Chronic Kidney Disease	19
Asthma	9
Osteoperosis	21
Atrial Fibrilation	9
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	23
Dementia	4
Cancer	58

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mai Brooks, MD treated as a general surgeon in Thousand Oaks, CA during 2021 were excision, open surgery, diagnostic procedures and lymph node procedures.

Volume of procedures performed by Dr. Mai Brooks, MD for Medicare patients.

breast procedures	83
cancer surgery	12
diagnostic procedures	123
doctor visit	756
excision	135
lymph node procedures	104
open surgery	123
plastic surgery procedures	69
reconstructive surgery	69
tissue transfer	69
wound repair (e.g. stitches)	69

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mai Brooks, MD.

**Gender**
Male	24
Female	516

**Ethnicity**
Non-Hispanic White	455
Black	0
Hispanic	33
Asian	24
Other	0
Native American	0

**Age**
From 65 to 74	280
From 75 to 84	200
85 and over	43
Less than 65	17

Conditions of Medicare patients treated by Dr. Mai Brooks, MD in 2021

Hypertension	57
High Cholesterol	62
Stroke	2
Ischemic Heart Disease	25
Depression	20
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	19
Atrial Fibrilation	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	6
Diabetes	20
Dementia	5
Cancer	57

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mai Brooks, MD treated as a general surgeon in Thousand Oaks, CA during 2022 were excision, open surgery, diagnostic procedures and lymph node procedures.

Volume of procedures performed by Dr. Mai Brooks, MD for Medicare patients.

breast procedures	60
cancer surgery	12
diagnostic procedures	84
doctor visit	757
excision	96
lymph node procedures	70
open surgery	84
plastic surgery procedures	56
reconstructive surgery	56
tissue transfer	56
wound repair (e.g. stitches)	56

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mai Brooks, MD.

**Gender**
Male	28
Female	516

**Ethnicity**
Non-Hispanic White	471
Black	0
Hispanic	25
Asian	23
Other	0
Native American	0

**Age**
From 65 to 74	257
From 75 to 84	226
85 and over	45
Less than 65	16

Conditions of Medicare patients treated by Dr. Mai Brooks, MD in 2022

Hypertension	67
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	16
Depression	18
Chronic Kidney Disease	13
Asthma	13
Osteoperosis	28
Atrial Fibrilation	12
Heart Failure	9
Chronic Obstructive Pulmonary Disease	10
Diabetes	19
Dementia	4
Cancer	61

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mai Brooks, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mai Brooks, MD treated as a general surgeon in Thousand Oaks, CA were excision, open surgery, diagnostic procedures and breast procedures.

breast procedures	63
cancer surgery	29
diagnostic procedures	66
dissection	14
doctor visit	524
excision	94
lymph node procedures	62
open surgery	66
plastic surgery procedures	50
reconstructive surgery	50
tissue transfer	50
wound repair (e.g. stitches)	50

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mai Brooks, MD.

**Gender**
Male	24
Female	357

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	13
Non-Hispanic White	321
Native American / Alaskan Native	0
Hispanic	27
Other	0

**Age**
75 to 84	126
85 and over	32
Less than 65	17
65 to 74	202

Average of Total of Conditions of Medicare patients treated by Dr. Mai Brooks, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mai Brooks, MD treated were cancer, hypertension, high cholesterol and ischemic heart disease.

Hypertension	54
High Cholesterol	53
Stroke	2
Ischemic Heart Disease	24
Depression	17
Chronic Kidney Disease	13
Asthma	8
Osteoporosis	18
Heart Failure	9
Chronic Obstructive Pulmonary Disease	6
Diabetes	19
Atrial Fibrillation	7
Dementia	4
Cancer	54

Education & Training

She has a state license in California.

Licensed In: California

Affiliations & Hospitals

Dr. Mai Brooks, MD is associated with these hospitals and organizations:

Mai Brooks, MD

Ratings & Reviews

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General Payments

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

**Payments by Company**
Shionogi Inc	$188 Osphena $188
Pfizer Inc.	$42 IBRANCE $42
Lilly USA, LLC	$31 VERZENIO $31
Davol Inc.	$28 V. Mueller $28
HOLOGIC INC	$16 localizer $16
Other	$25 SAVI SCOUT $13	Percutaneous: MiniLap System with ThumbGrip Handle $13

**Types of Payments**
Food and Beverage	$329

Biography

Dr. Mai Brooks practices general surgery and surgical oncology (cancer surgery). Dr. Brooks graduated from Harvard Medical School. Her distinctions include: Southern California Super Doctors; Top Women Southern California Super Doctors; and Southern California Super Doctors 2008.