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Dr. Robert Michael Holbrook, MD

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Specializes in: Adult Gastroenterology

University of Oklahoma College of Medicine

1515 N. Porter Avenue Suite 200
Norman, OK 73071

(405) 366-8619

Dr. Robert Michael Holbrook, MD is a gastroenterologist in Norman, OK specializing in adult gastroenterology. He graduated from University of Oklahoma College of Medicine. Dr. Robert Michael Holbrook, MD is affiliated with Norman Regional Health System.

Office Locations

Norman Regional Health System

1515 N. Porter Avenue Suite 200
Norman, OK 73071

(405) 366-8619

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Noteworthy Medicare Patient Procedures Performed by Dr. Robert Michael Holbrook, MD in 2023

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

Top 5%

By Volume:

esophageal dilation without endoscopic guidance

In 2023, Dr. Robert Michael Holbrook, MD performed more esophageal dilation without endoscopic guidance procedures for Medicare patients than 95% of providers in related specialties within Oklahoma.

Top 25%

By Volume:

diagnostic EGD

preventive care

screening colonoscopy

By Affordability:

esophageal dilation

In 2012, among providers in related specialties within Oklahoma, Dr. Robert Michael Holbrook, MD performed more diagnostic EGD, preventive care, and screening colonoscopy procedures for Medicare patients than 75% of them and he also had a list price for esophageal dilation 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. Robert Michael Holbrook, MD treated as a gastroenterologist in Norman, OK during 2012 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Robert Michael Holbrook, MD for Medicare patients.

anastomosis	12
catheterization	12
diagnostic procedures	343
doctor visit	275
esophageal dilation	78
gastrointestinal procedures	517
hospital care	372
inpatient care	372
minimally invasive procedures	517
preventive care	82
pyloric dilation	18
removal of lesion (e.g. growth)	343

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Robert Michael Holbrook, MD treated as a gastroenterologist in Norman, OK during 2013 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Michael Holbrook, MD for Medicare patients.

diagnostic procedures	330
doctor visit	346
esophageal dilation	80
gastrointestinal procedures	518
hospital care	308
inpatient care	308
minimally invasive procedures	518
preventive care	88
pyloric dilation	33
removal of lesion (e.g. growth)	330

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Michael Holbrook, MD.

**Gender**
Male	215
Female	324

**Ethnicity**
Non-Hispanic White	501
Black	15
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	253
From 75 to 84	128
85 and over	55
Less than 65	103

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2013

Hypertension	71
High Cholesterol	52
Stroke	7
Ischemic Heart Disease	41
Depression	32
Chronic Kidney Disease	21
Asthma	10
Osteoperosis	9
Atrial Fibrilation	9
Heart Failure	20
Chronic Obstructive Pulmonary Disease	23
Diabetes	30
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Robert Michael Holbrook, MD treated as a gastroenterologist in Norman, OK during 2014 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Michael Holbrook, MD for Medicare patients.

anastomosis	15
catheterization	15
diagnostic procedures	197
doctor visit	243
esophageal dilation	63
gastrointestinal procedures	342
hospital care	122
inpatient care	122
minimally invasive procedures	342
preventive care	76
removal of lesion (e.g. growth)	197

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Michael Holbrook, MD.

**Gender**
Male	161
Female	249

**Ethnicity**
Non-Hispanic White	376
Black	0
Hispanic	0
Asian	0
Other	0
Native American	15

**Age**
From 65 to 74	183
From 75 to 84	110
85 and over	38
Less than 65	79

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2014

Hypertension	75
High Cholesterol	53
Stroke	9
Ischemic Heart Disease	46
Depression	28
Chronic Kidney Disease	21
Asthma	10
Osteoperosis	8
Atrial Fibrilation	9
Heart Failure	23
Chronic Obstructive Pulmonary Disease	23
Diabetes	34
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Robert Michael Holbrook, MD treated as a gastroenterologist in Norman, OK during 2015 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Michael Holbrook, MD for Medicare patients.

anastomosis	12
catheterization	12
diagnostic procedures	297
doctor visit	396
esophageal dilation	95
gastrointestinal procedures	510
hospital care	179
inpatient care	179
minimally invasive procedures	510
preventive care	110
removal of lesion (e.g. growth)	297

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Michael Holbrook, MD.

**Gender**
Male	450
Female	686

**Ethnicity**
Non-Hispanic White	1032
Black	22
Hispanic	0
Asian	0
Other	0
Native American	36

**Age**
From 65 to 74	570
From 75 to 84	286
85 and over	90
Less than 65	190

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2015

Hypertension	72
High Cholesterol	58
Stroke	8
Ischemic Heart Disease	43
Depression	32
Chronic Kidney Disease	22
Asthma	17
Osteoperosis	8
Atrial Fibrilation	9
Heart Failure	18
Chronic Obstructive Pulmonary Disease	23
Diabetes	32
Dementia	10
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Robert Michael Holbrook, MD treated as a gastroenterologist in Norman, OK during 2016 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Michael Holbrook, MD for Medicare patients.

anastomosis	12
catheterization	12
diagnostic procedures	302
doctor visit	336
esophageal dilation	95
gastrointestinal procedures	528
hospital care	201
inpatient care	201
minimally invasive procedures	528
preventive care	112
removal of lesion (e.g. growth)	302

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Michael Holbrook, MD.

**Gender**
Male	256
Female	339

**Ethnicity**
Non-Hispanic White	527
Black	19
Hispanic	12
Asian	0
Other	0
Native American	25

**Age**
From 65 to 74	303
From 75 to 84	156
85 and over	50
Less than 65	86

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2016

Hypertension	72
High Cholesterol	60
Stroke	8
Ischemic Heart Disease	44
Depression	30
Chronic Kidney Disease	29
Asthma	25
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	22
Chronic Obstructive Pulmonary Disease	23
Diabetes	33
Dementia	12
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Robert Michael Holbrook, MD treated as a gastroenterologist in Norman, OK during 2017 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Michael Holbrook, MD for Medicare patients.

diagnostic procedures	323
doctor visit	391
esophageal dilation	89
foreign body removal	12
gastrointestinal procedures	553
hospital care	181
inpatient care	181
minimally invasive procedures	553
preventive care	131
removal of lesion (e.g. growth)	323

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Michael Holbrook, MD.

**Gender**
Male	254
Female	353

**Ethnicity**
Non-Hispanic White	548
Black	11
Hispanic	13
Asian	0
Other	0
Native American	24

**Age**
From 65 to 74	298
From 75 to 84	164
85 and over	51
Less than 65	94

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2017

Hypertension	75
High Cholesterol	57
Stroke	8
Ischemic Heart Disease	46
Depression	33
Chronic Kidney Disease	32
Asthma	9
Osteoperosis	9
Atrial Fibrilation	12
Heart Failure	22
Chronic Obstructive Pulmonary Disease	21
Diabetes	33
Dementia	13
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Robert Michael Holbrook, MD treated as a gastroenterologist in Norman, OK during 2018 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Michael Holbrook, MD for Medicare patients.

diagnostic procedures	367
doctor visit	378
esophageal dilation	111
gastrointestinal procedures	615
hospital care	158
inpatient care	158
minimally invasive procedures	615
preventive care	150
removal of lesion (e.g. growth)	367

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Michael Holbrook, MD.

**Gender**
Male	306
Female	360

**Ethnicity**
Non-Hispanic White	600
Black	16
Hispanic	0
Asian	0
Other	12
Native American	23

**Age**
From 65 to 74	351
From 75 to 84	196
85 and over	33
Less than 65	86

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2018

Hypertension	72
High Cholesterol	58
Stroke	6
Ischemic Heart Disease	44
Depression	30
Chronic Kidney Disease	32
Asthma	9
Osteoperosis	8
Atrial Fibrilation	13
Heart Failure	19
Chronic Obstructive Pulmonary Disease	21
Diabetes	34
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Robert Michael Holbrook, MD treated as a gastroenterologist in Norman, OK during 2019 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Michael Holbrook, MD for Medicare patients.

diagnostic procedures	322
doctor visit	405
esophageal dilation	108
gastrointestinal procedures	534
hospital care	126
inpatient care	126
minimally invasive procedures	534
preventive care	124
removal of lesion (e.g. growth)	322

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Michael Holbrook, MD.

**Gender**
Male	248
Female	348

**Ethnicity**
Non-Hispanic White	549
Black	0
Hispanic	0
Asian	0
Other	0
Native American	17

**Age**
From 65 to 74	316
From 75 to 84	177
85 and over	32
Less than 65	71

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2019

Hypertension	71
High Cholesterol	61
Stroke	8
Ischemic Heart Disease	46
Depression	31
Chronic Kidney Disease	33
Asthma	11
Osteoperosis	9
Atrial Fibrilation	12
Heart Failure	19
Chronic Obstructive Pulmonary Disease	21
Diabetes	37
Dementia	13
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Robert Michael Holbrook, MD treated as a gastroenterologist in Norman, OK during 2020 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Michael Holbrook, MD for Medicare patients.

diagnostic procedures	230
doctor visit	376
esophageal dilation	98
gastrointestinal procedures	425
hospital care	96
inpatient care	96
minimally invasive procedures	425
preventive care	100
removal of lesion (e.g. growth)	230

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Michael Holbrook, MD.

**Gender**
Male	225
Female	267

**Ethnicity**
Non-Hispanic White	450
Black	13
Hispanic	0
Asian	0
Other	0
Native American	16

**Age**
From 65 to 74	254
From 75 to 84	138
85 and over	44
Less than 65	56

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2020

Hypertension	73
High Cholesterol	62
Stroke	7
Ischemic Heart Disease	46
Depression	28
Chronic Kidney Disease	30
Asthma	10
Osteoperosis	9
Atrial Fibrilation	14
Heart Failure	19
Chronic Obstructive Pulmonary Disease	19
Diabetes	30
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Robert Michael Holbrook, MD treated as a gastroenterologist in Norman, OK during 2021 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Michael Holbrook, MD for Medicare patients.

diagnostic procedures	238
doctor visit	364
esophageal dilation	80
gastrointestinal procedures	403
hospital care	76
inpatient care	76
minimally invasive procedures	403
preventive care	92
removal of lesion (e.g. growth)	238

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Michael Holbrook, MD.

**Gender**
Male	219
Female	278

**Ethnicity**
Non-Hispanic White	443
Black	18
Hispanic	0
Asian	0
Other	0
Native American	16

**Age**
From 65 to 74	271
From 75 to 84	150
85 and over	30
Less than 65	46

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2021

Hypertension	75
High Cholesterol	64
Stroke	6
Ischemic Heart Disease	44
Depression	30
Chronic Kidney Disease	35
Asthma	8
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	16
Chronic Obstructive Pulmonary Disease	22
Diabetes	30
Dementia	11
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Robert Michael Holbrook, MD treated as a gastroenterologist in Norman, OK during 2022 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Robert Michael Holbrook, MD for Medicare patients.

diagnostic procedures	238
doctor visit	341
esophageal dilation	95
gastrointestinal procedures	437
hospital care	99
inpatient care	99
minimally invasive procedures	437
preventive care	114
removal of lesion (e.g. growth)	238

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert Michael Holbrook, MD.

**Gender**
Male	213
Female	303

**Ethnicity**
Non-Hispanic White	482
Black	0
Hispanic	0
Asian	0
Other	0
Native American	13

**Age**
From 65 to 74	260
From 75 to 84	183
85 and over	31
Less than 65	42

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	37
Depression	28
Chronic Kidney Disease	22
Asthma	14
Osteoperosis	16
Atrial Fibrilation	17
Heart Failure	14
Chronic Obstructive Pulmonary Disease	22
Diabetes	30
Dementia	5
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Robert Michael Holbrook, MD for Medicare patients.

The highest averages for the top procedures that Dr. Robert Michael Holbrook, MD treated as a gastroenterologist in Norman, OK were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

anastomosis	12
catheterization	12
diagnostic procedures	289
doctor visit	350
esophageal dilation	90
foreign body removal	12
gastrointestinal procedures	489
hospital care	174
inpatient care	174
minimally invasive procedures	489
preventive care	107
pyloric dilation	25
removal of lesion (e.g. growth)	289

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Robert Michael Holbrook, MD.

**Gender**
Male	231
Female	318

**Ethnicity**
Black / African American	10
Asian / Pacific Islander	0
Non-Hispanic White	500
Native American / Alaskan Native	16
Hispanic	2
Other	1

**Age**
75 to 84	153
85 and over	41
Less than 65	77
65 to 74	278

Average of Total of Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Robert Michael Holbrook, MD treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	66
High Cholesterol	54
Stroke	6
Ischemic Heart Disease	39
Depression	27
Chronic Kidney Disease	25
Asthma	11
Osteoporosis	8
Heart Failure	17
Chronic Obstructive Pulmonary Disease	19
Diabetes	29
Atrial Fibrillation	10
Cancer	10
Dementia	9

Education & Training

Dr. Robert Michael Holbrook, MD graduated from University of Oklahoma College of Medicine. He completed residency at University of Oklahoma Health Sciences Center. He is certified by the Board Certified in Internal Medicine and has a state license in Oklahoma.

Medical School: University of Oklahoma College of Medicine

Residency: University of Oklahoma Health Sciences Center

Board Certification: Board Certified in Internal Medicine

Licensed In: Oklahoma

Affiliations & Hospitals

Dr. Robert Michael Holbrook, MD is associated with these hospitals and organizations:

Norman Regional Health System

Ratings & Reviews

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General Payments

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

**Payments by Company**
AbbVie Inc.	$2,153 Humira $460	Rinvoq $429	Creon $383	LINZESS $312	Mavyret $259	Other $310
Takeda Pharmaceuticals U.S.A., Inc.	$1,608 ENTYVIO $1,119	GATTEX $180	Dexilant $131	MOTEGRITY $80	AMITIZA $20	Other $77
Janssen Biotech, Inc.	$1,275 STELARA $760	SIMPONI $360	REMICADE $129	OLYSIO $27
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$1,234 XIFAXAN $736	Trulance $391	XIFAXANIBSD $46	Relistor $31	Uceris $19	Other $11
AbbVie, Inc.	$1,182 Humira $451	Creon $418	Viekira $153	Mavyret $119	Moderiba $13	Other $28
Other	$7,346 LINZESS $598	ZEPOSIA $427	Injectafer $330	Cimzia $309	SUCRAID $302	Other $5,379

**Types of Payments**
Food and Beverage	$14,674
Education	$124

Research Payments

Dr. Robert Michael Holbrook, MD has received 51 research payments totaling $65,148.

Biography

Dr. Robert Holbrook works as an adult gastroenterology. After completing medical school at the University of Oklahoma College of Medicine, Dr. Holbrook performed his residency at the University of Oklahoma Health Sciences Center. He is affiliated with Norman Regional Health System.

Select Year:

Dr. Robert Michael Holbrook, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Robert Michael Holbrook, MD in 2023

By Volume:

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. Robert Michael Holbrook, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Robert Michael Holbrook, 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. Robert Michael Holbrook, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Research Payments

Biography

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