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Home > ME Providers > Colorectal Surgeons

Dr. Brian Gillis, DO

(2 Ratings)

Specializes in: Colon & Rectal Surgery

University of New England, College of Osteopathic Medicine (1995)

8 Water Street
Oakland, ME 04963

(207) 465-3003

Dr. Brian Gillis, DO is a colon and rectal surgeon in Portland, ME specializing in colon & rectal surgery. He graduated from University of New England, College of Osteopathic Medicine in 1995 and has 31 years of experience.

Office Locations

1375 Congress Street
Portland, ME 04102

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8 Water Street
Oakland, ME 04963

(207) 465-3003

(207) 465-7352

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Noteworthy Medicare Patient Procedures Performed by Dr. Brian Gillis, DO in 2023

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

Top 5%

By Volume:

anoscopy with dilation

gastrointestinal procedures

minimally invasive procedures

sclerotherapy for hemorrhoids

In 2023, Dr. Brian Gillis, DO performed more anoscopy with dilation, gastrointestinal procedures, minimally invasive procedures, and sclerotherapy for hemorrhoids procedures for Medicare patients than 95% of providers in related specialties within Maine.

Top 25%

By Volume:

anal sphincter electromyography

anorectal procedures

electromyography

urethral sphincter electromyography

In 2012, Dr. Brian Gillis, DO performed more anal sphincter electromyography, anorectal procedures, electromyography (EMG), and urethral sphincter electromyography procedures for Medicare patients than 75% of providers in related specialties within Maine.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Brian Gillis, DO treated as a colon and rectal surgeon in Portland, ME during 2012 were gastrointestinal procedures, anorectal procedures, diagnostic procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Brian Gillis, DO for Medicare patients.

anorectal procedures	607
diagnostic procedures	392
doctor visit	332
gastrointestinal procedures	678
injections	13
manometry	304
minimally invasive procedures	374
preventive care	35
removal of lesion (e.g. growth)	89
urologic procedures	303

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Brian Gillis, DO treated as a colon and rectal surgeon in Portland, ME during 2013 were gastrointestinal procedures, anorectal procedures, minimally invasive procedures and diagnostic procedures.

Volume of procedures performed by Dr. Brian Gillis, DO for Medicare patients.

anorectal procedures	558
diagnostic procedures	357
doctor visit	363
gastrointestinal procedures	680
injections	24
manometry	280
minimally invasive procedures	400
preventive care	35
removal of lesion (e.g. growth)	79
urologic procedures	278

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Gillis, DO.

**Gender**
Male	154
Female	151

**Age**
From 65 to 74	132
From 75 to 84	82
85 and over	24
Less than 65	67

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2013

Hypertension	57
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	52
Depression	29
Chronic Kidney Disease	10
Asthma	8
Osteoperosis	4
Atrial Fibrilation	10
Heart Failure	9
Chronic Obstructive Pulmonary Disease	15
Diabetes	27
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Brian Gillis, DO treated as a colon and rectal surgeon in Portland, ME during 2014 were gastrointestinal procedures, anorectal procedures, minimally invasive procedures and diagnostic procedures.

Volume of procedures performed by Dr. Brian Gillis, DO for Medicare patients.

anorectal procedures	632
diagnostic procedures	396
doctor visit	383
gastrointestinal procedures	715
manometry	317
minimally invasive procedures	398
preventive care	42
removal of lesion (e.g. growth)	81
urologic procedures	315

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Gillis, DO.

**Gender**
Male	150
Female	173

**Age**
From 65 to 74	133
From 75 to 84	79
85 and over	28
Less than 65	83

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2014

Hypertension	57
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	52
Depression	28
Chronic Kidney Disease	16
Asthma	9
Osteoperosis	5
Atrial Fibrilation	8
Heart Failure	9
Chronic Obstructive Pulmonary Disease	11
Diabetes	25
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Brian Gillis, DO treated as a colon and rectal surgeon in Portland, ME during 2015 were gastrointestinal procedures, anorectal procedures, diagnostic procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Brian Gillis, DO for Medicare patients.

anorectal procedures	718
diagnostic procedures	436
doctor visit	413
gastrointestinal procedures	777
manometry	360
minimally invasive procedures	417
preventive care	41
removal of lesion (e.g. growth)	78
urologic procedures	358

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Gillis, DO.

**Gender**
Male	302
Female	336

**Age**
From 65 to 74	270
From 75 to 84	160
85 and over	58
Less than 65	150

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2015

Hypertension	53
High Cholesterol	49
Stroke	4
Ischemic Heart Disease	49
Depression	27
Chronic Kidney Disease	13
Asthma	11
Osteoperosis	4
Atrial Fibrilation	10
Heart Failure	9
Chronic Obstructive Pulmonary Disease	12
Diabetes	22
Dementia	6
Cancer	8

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Brian Gillis, DO treated as a colon and rectal surgeon in Portland, ME during 2016 were anorectal procedures, gastrointestinal procedures, minimally invasive procedures and diagnostic procedures.

Volume of procedures performed by Dr. Brian Gillis, DO for Medicare patients.

ablation	291
anorectal procedures	1051
diagnostic procedures	422
doctor visit	422
gastrointestinal procedures	807
injections	291
manometry	382
minimally invasive procedures	716
preventive care	46
removal of lesion (e.g. growth)	44
urologic procedures	378
vascular procedures	291

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Gillis, DO.

**Gender**
Male	151
Female	163

**Age**
From 65 to 74	130
From 75 to 84	93
85 and over	33
Less than 65	58

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2016

Hypertension	54
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	45
Depression	26
Chronic Kidney Disease	16
Asthma	24
Osteoperosis	7
Atrial Fibrilation	8
Heart Failure	13
Chronic Obstructive Pulmonary Disease	18
Diabetes	24
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Brian Gillis, DO treated as a colon and rectal surgeon in Portland, ME during 2017 were anorectal procedures, gastrointestinal procedures, minimally invasive procedures and diagnostic procedures.

Volume of procedures performed by Dr. Brian Gillis, DO for Medicare patients.

ablation	286
anorectal procedures	1048
diagnostic procedures	395
doctor visit	356
gastrointestinal procedures	746
injections	286
manometry	381
minimally invasive procedures	651
preventive care	43
removal of lesion (e.g. growth)	14
urologic procedures	381
vascular procedures	286

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Gillis, DO.

**Gender**
Male	140
Female	155

**Age**
From 65 to 74	109
From 75 to 84	91
85 and over	30
Less than 65	65

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2017

Hypertension	55
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	41
Depression	23
Chronic Kidney Disease	20
Asthma	10
Osteoperosis	5
Atrial Fibrilation	7
Heart Failure	11
Chronic Obstructive Pulmonary Disease	13
Diabetes	27
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Brian Gillis, DO treated as a colon and rectal surgeon in Portland, ME during 2018 were anorectal procedures, gastrointestinal procedures, minimally invasive procedures and diagnostic procedures.

Volume of procedures performed by Dr. Brian Gillis, DO for Medicare patients.

ablation	253
anorectal procedures	952
diagnostic procedures	363
doctor visit	317
gastrointestinal procedures	676
injections	253
manometry	351
minimally invasive procedures	578
preventive care	35
removal of lesion (e.g. growth)	15
urologic procedures	348
vascular procedures	253

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Gillis, DO.

**Gender**
Male	124
Female	142

**Age**
From 65 to 74	104
From 75 to 84	77
85 and over	32
Less than 65	53

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2018

Hypertension	55
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	43
Depression	24
Chronic Kidney Disease	21
Asthma	9
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	11
Chronic Obstructive Pulmonary Disease	16
Diabetes	25
Dementia	9
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Brian Gillis, DO treated as a colon and rectal surgeon in Portland, ME during 2019 were anorectal procedures, minimally invasive procedures, gastrointestinal procedures and diagnostic procedures.

Volume of procedures performed by Dr. Brian Gillis, DO for Medicare patients.

ablation	238
anorectal procedures	690
diagnostic procedures	247
doctor visit	297
gastrointestinal procedures	519
injections	238
manometry	226
minimally invasive procedures	531
preventive care	30
removal of lesion (e.g. growth)	21
urologic procedures	226
vascular procedures	238

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Gillis, DO.

**Gender**
Male	116
Female	131

**Age**
From 65 to 74	101
From 75 to 84	57
85 and over	32
Less than 65	57

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2019

Hypertension	51
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	38
Depression	26
Chronic Kidney Disease	24
Asthma	7
Osteoperosis	0
Atrial Fibrilation	9
Heart Failure	11
Chronic Obstructive Pulmonary Disease	15
Diabetes	24
Dementia	6
Cancer	7

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Brian Gillis, DO treated as a colon and rectal surgeon in Portland, ME during 2020 were anorectal procedures, minimally invasive procedures, gastrointestinal procedures and diagnostic procedures.

Volume of procedures performed by Dr. Brian Gillis, DO for Medicare patients.

ablation	183
anorectal procedures	544
diagnostic procedures	202
doctor visit	238
gastrointestinal procedures	422
injections	183
manometry	180
minimally invasive procedures	425
preventive care	24
removal of lesion (e.g. growth)	21
urologic procedures	181
vascular procedures	183

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Gillis, DO.

**Gender**
Male	88
Female	114

**Age**
From 65 to 74	76
From 75 to 84	54
85 and over	26
Less than 65	46

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2020

Hypertension	49
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	37
Depression	27
Chronic Kidney Disease	23
Asthma	5
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	9
Chronic Obstructive Pulmonary Disease	14
Diabetes	23
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Brian Gillis, DO treated as a colon and rectal surgeon in Portland, ME during 2021 were anorectal procedures, minimally invasive procedures, gastrointestinal procedures and diagnostic procedures.

Volume of procedures performed by Dr. Brian Gillis, DO for Medicare patients.

ablation	154
anorectal procedures	450
diagnostic procedures	163
doctor visit	187
gastrointestinal procedures	333
injections	154
manometry	148
minimally invasive procedures	339
preventive care	15
removal of lesion (e.g. growth)	15
urologic procedures	148
vascular procedures	154

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Gillis, DO.

**Gender**
Male	80
Female	77

**Age**
From 65 to 74	55
From 75 to 84	42
85 and over	22
Less than 65	38

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2021

Hypertension	54
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	41
Depression	23
Chronic Kidney Disease	18
Asthma	8
Osteoperosis	10
Atrial Fibrilation	0
Heart Failure	7
Chronic Obstructive Pulmonary Disease	15
Diabetes	23
Dementia	8
Cancer	7

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Brian Gillis, DO treated as a colon and rectal surgeon in Portland, ME during 2022 were anorectal procedures, minimally invasive procedures, gastrointestinal procedures and ablation.

Volume of procedures performed by Dr. Brian Gillis, DO for Medicare patients.

ablation	128
anorectal procedures	353
diagnostic procedures	128
doctor visit	165
gastrointestinal procedures	275
injections	128
manometry	112
minimally invasive procedures	291
preventive care	19
removal of lesion (e.g. growth)	15
urologic procedures	113
vascular procedures	128

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Brian Gillis, DO.

**Gender**
Male	81
Female	70

**Age**
From 65 to 74	57
From 75 to 84	45
85 and over	21
Less than 65	28

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2022

Hypertension	68
High Cholesterol	70
Stroke	0
Ischemic Heart Disease	26
Depression	18
Chronic Kidney Disease	15
Asthma	0
Osteoperosis	10
Atrial Fibrilation	15
Heart Failure	9
Chronic Obstructive Pulmonary Disease	15
Diabetes	21
Dementia	0
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Brian Gillis, DO for Medicare patients.

The highest averages for the top procedures that Dr. Brian Gillis, DO treated as a colon and rectal surgeon in Portland, ME were anorectal procedures, gastrointestinal procedures, minimally invasive procedures and diagnostic procedures.

ablation	219
anorectal procedures	691
diagnostic procedures	318
doctor visit	315
gastrointestinal procedures	602
injections	174
manometry	276
minimally invasive procedures	465
preventive care	33
removal of lesion (e.g. growth)	42
urologic procedures	275
vascular procedures	219

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Brian Gillis, DO.

**Gender**
Male	126
Female	137

**Age**
75 to 84	70
85 and over	27
Less than 65	58
65 to 74	106

Average of Total of Conditions of Medicare patients treated by Dr. Brian Gillis, DO From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Brian Gillis, DO treated were hypertension, high cholesterol, ischemic heart disease and depression.

Hypertension	50
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	38
Depression	22
Chronic Kidney Disease	16
Asthma	8
Osteoporosis	4
Heart Failure	8
Chronic Obstructive Pulmonary Disease	13
Diabetes	21
Atrial Fibrillation	8
Dementia	6
Cancer	8

Education & Training

Dr. Brian Gillis, DO graduated from University of New England, College of Osteopathic Medicine in 1995. He is certified by the Board Certification: American Osteopathic Association - Proctology and has a state license in Maine.

Medical School: University of New England, College of Osteopathic Medicine (1995)

Board Certification: Board Certification: American Osteopathic Association - Proctology

Licensed In: Maine

Ratings & Reviews

Dr. Brian Gillis, DO has a high overall rating with an average of 3.5 out of 5 stars based on 2 ratings. We collect ratings and reviews of Dr. Brian Gillis, DO from all over the web to help you find the right in Portland, ME.

3.5

Overall Rating

(2 Ratings)

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General Payments

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

**Payments by Company**
Takeda Pharmaceuticals America, Inc.	$5,949 AMITIZA $5,941	Trintellix $8
Salix Pharmaceuticals, Ltd	$4,892 Solesta $4,783	$110
Takeda Pharmaceuticals U.S.A., Inc.	$1,314 MOTEGRITY $689	AMITIZA $471	GATTEX $100	$53
Allergan Inc.	$876 VRAYLAR $406	LINZESS $358	VIBERZI $113
AbbVie Inc.	$445 LINZESS $425	Creon $19
Other	$997 XIFAXAN $313	MOVANTIK $190	XIFAXANIBSD $129	LINZESS $69	GATTEX $54	Other $242

**Types of Payments**
Food and Beverage	$4,429
Honoraria	$3,300
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$3,245
Travel and Lodging	$1,757
Consulting Fee	$1,595
Other	$148

Biography

Dr. Brian Gillis is a colon & rectal surgery specialist in Oakland, ME and Portland, ME. Dr. Gillis's clinical interests include colorectal surgery procedures. He is a graduate of the University of New England, College of Osteopathic Medicine.

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Dr. Brian Gillis, DO

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Brian Gillis, DO in 2023

By Volume:

By Volume:

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. Brian Gillis, DO in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Gillis, DO in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Brian Gillis, DO 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. Brian Gillis, DO From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

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