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Dr. Thomas Kobina Duncan, DO

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Specializes in: General Surgery

Midwestern University, Chicago College of Osteopathic Medicine

300 Hillmont Avenue Building 340 #401
Ventura, CA 93003

(805) 652-6201

Dr. Thomas Kobina Duncan, DO is a general surgeon in Ventura, CA specializing in general surgery. He graduated from Midwestern University, Chicago College of Osteopathic Medicine. Dr. Thomas Kobina Duncan, DO is affiliated with Anacapa Surgical Associates and Dignity Health Medical Network - Ventura.

Office Locations

300 Hillmont Avenue Building 340 #401
Ventura, CA 93003

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3291 Loma Vista Road Building 340, Suite 401
Ventura, CA 93003

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Thomas Kobina Duncan, DO treated as a general surgeon in Ventura, CA during 2012 were emergency care.

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

doctor visit	18
emergency care	16

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Thomas Kobina Duncan, DO treated as a general surgeon in Ventura, CA during 2013 were hospital care, inpatient care and emergency care.

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

doctor visit	22
emergency care	18
hospital care	67
inpatient care	67

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Kobina Duncan, DO.

**Gender**
Male	46
Female	43

**Ethnicity**
Non-Hispanic White	46
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	27
From 75 to 84	0
85 and over	0
Less than 65	36

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2013

Hypertension	64
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	29
Depression	26
Chronic Kidney Disease	19
Asthma	12
Osteoperosis	0
Atrial Fibrilation	12
Heart Failure	17
Chronic Obstructive Pulmonary Disease	18
Diabetes	28
Dementia	13
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Thomas Kobina Duncan, DO treated as a general surgeon in Ventura, CA during 2014 were hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

doctor visit	58
hospital care	53
inpatient care	53

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Kobina Duncan, DO.

**Gender**
Male	44
Female	54

**Ethnicity**
Non-Hispanic White	46
Black	0
Hispanic	40
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	28
From 75 to 84	0
85 and over	0
Less than 65	50

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2014

Hypertension	69
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	27
Depression	29
Chronic Kidney Disease	24
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	19
Chronic Obstructive Pulmonary Disease	15
Diabetes	37
Dementia	0
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Thomas Kobina Duncan, DO treated as a general surgeon in Ventura, CA during 2015 were hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

doctor visit	28
hospital care	12
inpatient care	12

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Kobina Duncan, DO.

**Gender**
Male	92
Female	84

**Ethnicity**
Non-Hispanic White	92
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	50
From 75 to 84	0
85 and over	0
Less than 65	82

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2015

Hypertension	68
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	26
Depression	34
Chronic Kidney Disease	40
Asthma	0
Osteoperosis	0
Atrial Fibrilation	14
Heart Failure	18
Chronic Obstructive Pulmonary Disease	17
Diabetes	41
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

doctor visit	54

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Kobina Duncan, DO.

**Gender**
Male	42
Female	43

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

**Age**
From 65 to 74	38
From 75 to 84	0
85 and over	0
Less than 65	25

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2016

Hypertension	68
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	18
Depression	31
Chronic Kidney Disease	35
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	19
Chronic Obstructive Pulmonary Disease	0
Diabetes	38
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Thomas Kobina Duncan, DO treated as a general surgeon in Ventura, CA during 2017 were hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

doctor visit	77
hospital care	13
inpatient care	13

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Kobina Duncan, DO.

**Gender**
Male	50
Female	52

**Ethnicity**
Non-Hispanic White	46
Black	0
Hispanic	42
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	44
From 75 to 84	19
85 and over	12
Less than 65	27

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2017

Hypertension	72
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	27
Depression	34
Chronic Kidney Disease	35
Asthma	11
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	14
Chronic Obstructive Pulmonary Disease	17
Diabetes	39
Dementia	12
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

doctor visit	57

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Kobina Duncan, DO.

**Gender**
Male	52
Female	33

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

**Age**
From 65 to 74	36
From 75 to 84	0
85 and over	0
Less than 65	23

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2018

Hypertension	75
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	26
Depression	38
Chronic Kidney Disease	38
Asthma	0
Osteoperosis	0
Atrial Fibrilation	14
Heart Failure	13
Chronic Obstructive Pulmonary Disease	16
Diabetes	36
Dementia	13
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Thomas Kobina Duncan, DO treated as a general surgeon in Ventura, CA during 2019 were hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

doctor visit	84
hospital care	42
inpatient care	42

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Kobina Duncan, DO.

**Gender**
Male	69
Female	54

**Ethnicity**
Non-Hispanic White	68
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	46
From 75 to 84	27
85 and over	14
Less than 65	36

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2019

Hypertension	69
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	35
Depression	31
Chronic Kidney Disease	41
Asthma	0
Osteoperosis	11
Atrial Fibrilation	11
Heart Failure	22
Chronic Obstructive Pulmonary Disease	14
Diabetes	41
Dementia	14
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Thomas Kobina Duncan, DO treated as a general surgeon in Ventura, CA during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

doctor visit	15
hospital care	35
inpatient care	35

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Kobina Duncan, DO.

**Gender**
Male	38
Female	34

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

**Age**
From 65 to 74	29
From 75 to 84	0
85 and over	0
Less than 65	19

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2020

Hypertension	75
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	40
Depression	25
Chronic Kidney Disease	35
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	31
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Thomas Kobina Duncan, DO treated as a general surgeon in Ventura, CA during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

doctor visit	27
hospital care	55
inpatient care	55

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Kobina Duncan, DO.

**Gender**
Male	56
Female	50

**Ethnicity**
Non-Hispanic White	53
Black	0
Hispanic	38
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	45
From 75 to 84	23
85 and over	18
Less than 65	20

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2021

Hypertension	70
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	39
Depression	34
Chronic Kidney Disease	49
Asthma	0
Osteoperosis	12
Atrial Fibrilation	0
Heart Failure	25
Chronic Obstructive Pulmonary Disease	18
Diabetes	39
Dementia	25
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Thomas Kobina Duncan, DO treated as a general surgeon in Ventura, CA during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

hospital care	45
inpatient care	45

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Kobina Duncan, DO.

**Gender**
Male	31
Female	41

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

**Age**
From 65 to 74	34
From 75 to 84	0
85 and over	0
Less than 65	21

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2022

Hypertension	71
High Cholesterol	57
Stroke	17
Ischemic Heart Disease	25
Depression	33
Chronic Kidney Disease	24
Asthma	0
Osteoperosis	17
Atrial Fibrilation	21
Heart Failure	17
Chronic Obstructive Pulmonary Disease	17
Diabetes	40
Dementia	0
Cancer	19

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Thomas Kobina Duncan, DO treated as a general surgeon in Ventura, CA during 2023 were hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

hospital care	60
inpatient care	60

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Kobina Duncan, DO.

**Gender**
Male	37
Female	33

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

**Age**
From 65 to 74	30
From 75 to 84	14
85 and over	11
Less than 65	15

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2023

Hypertension	75
High Cholesterol	63
Stroke	26
Ischemic Heart Disease	30
Depression	40
Chronic Kidney Disease	29
Asthma	0
Osteoperosis	0
Atrial Fibrilation	24
Heart Failure	21
Chronic Obstructive Pulmonary Disease	0
Diabetes	46
Dementia	16
Cancer	0

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Thomas Kobina Duncan, DO treated as a general surgeon in Ventura, CA during 2024 were hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

hospital care	49
inpatient care	49

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Kobina Duncan, DO.

**Gender**
Male	28
Female	36

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

**Age**
From 65 to 74	31
From 75 to 84	15
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2024

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	27
Depression	39
Chronic Kidney Disease	30
Asthma	0
Osteoperosis	28
Atrial Fibrilation	34
Heart Failure	28
Chronic Obstructive Pulmonary Disease	25
Diabetes	38
Dementia	17
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Thomas Kobina Duncan, DO for Medicare patients.

The highest averages for the top procedures that Dr. Thomas Kobina Duncan, DO treated as a general surgeon in Ventura, CA were hospital care, inpatient care and emergency care.

doctor visit	44
emergency care	17
hospital care	43
inpatient care	43

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Thomas Kobina Duncan, DO.

**Gender**
Female	42
Male	45

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	45
Hispanic	9
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	4
75 to 84	7
Less than 65	27
65 to 74	33

Average of Total of Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Thomas Kobina Duncan, DO treated were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension	65
High Cholesterol	48
Stroke	3
Ischemic Heart Disease	26
Depression	30
Chronic Kidney Disease	30
Asthma	1
Osteoporosis	5
Heart Failure	16
Chronic Obstructive Pulmonary Disease	12
Diabetes	34
Atrial Fibrillation	10
Dementia	8
Cancer	5

Education & Training

Dr. Thomas Kobina Duncan, DO graduated from Midwestern University, Chicago College of Osteopathic Medicine. He has a state license in California.

Medical School: Midwestern University, Chicago College of Osteopathic Medicine

Licensed In: California

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Thomas Kobina Duncan, DO. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Intuitive Surgical, Inc.	$11,636 Da Vinci Surgical System $11,636
Z-Medica, LLC	$696 Control+ $696
Medtronic, Inc.	$407 Signia $383	ProGrip $24
ACell, Inc.	$319 $319
Covidien LP	$307 Endo GIA $163	ReliaTack $144
Other	$1,332 ReliaTack $164	NovoSorb BTM $150	QuikClot Control+ $126	TRIDENT SPECIMEN RADIOGRAPHY SYSTEM $119	TEG $99	Other $673

**Types of Payments**
Education	$8,829
Food and Beverage	$2,809
Travel and Lodging	$2,363
Consulting Fee	$696

Biography

Dr. Thomas Duncan specializes in general surgery. Dr. Duncan has an open panel in VENTURA, CA according to CommonSpirit Health. He is a graduate of Midwestern University, Chicago College of Osteopathic Medicine. He has received professional recognition including the following: Southern California Super Doctors.

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Dr. Thomas Kobina Duncan, DO

Office Locations

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. Thomas Kobina Duncan, DO in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2023

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

2024 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO in 2024

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Average Medicare Patient Data From 2012 - 2024

Average of Total of Conditions of Medicare patients treated by Dr. Thomas Kobina Duncan, DO From 2012 - 2024

Education & Training

Ratings & Reviews

General Payments

Biography

Other Providers in Ventura, CA