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Dr. Aaron Patrick Fieker, DO

(Aaron Patrick Fieker, DO)

(No ratings)

Specializes in: Gastroenterology (Digestive System)

Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine

Professional interests include: gastrointestinal problems (digestive disorders)

6160 South Yale Avenue Suite 100
Tulsa, OK 74136

(918) 497-3300

Dr. Aaron Patrick Fieker, DO is a gastroenterologist in Tulsa, OK specializing in gastroenterology (digestive system). He graduated from Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine. Dr. Aaron Patrick Fieker, DO is affiliated with Saint Francis Health System, Ascension, Ascension St. John Jane Phillips, Ascension St. John Medical Center, Warren Clinic Gastroenterology and Ascension St. John Broken Arrow.

Office Locations

6160 South Yale Avenue Suite 100
Tulsa, OK 74136

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10210 E 91st Street
Tulsa, OK 74133

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Some issues Dr. Aaron Patrick Fieker, DO can help you with:

Gastrointestinal Problems (Digestive Disorders)

The gastrointestinal system, or GI tract, is the name given to a collection of organs that work together to digest food. These organs fit together in a long tube, running from the mouth to the anus, and include the esophagus, stomach, and intestines, among others. With so many parts working together, complicated by today's busy lifestyles and diets, digestive problems are common. As many as 1 in 3 Americans have a digestive or GI disorder. There are a huge variety of digestive problems, but the most common are IBS, constipation, GERD, hemorrhoids, and ulcers.

IBS, or irritable bowel syndrome, happens when the muscles surrounding the colon contract too easily or frequently. The result is abdominal pain, cramps, diarrhea or constipation, gas and bloating. IBS attacks can often be brought on by specific triggers, so a key part of treatment is learning which foods trigger IBS attacks and avoiding them. Treatment also includes exercise, avoiding stress, and medications if needed.

Constipation, or large, hard, or infrequent stools, happens to everyone at some point. It can be caused by a disruption in routine or food, or by eating a diet without many fresh fruits and vegetables. Although it is uncomfortable, constipation is common and usually not serious, but it can sometimes become chronic. Adding fiber to the diet, exercising, and taking medications may help.

GERD, or gastroesophageal reflux disease, is a severe form of chronic heartburn where stomach acid spills back up into the esophagus. Left untreated, the acid may even eat away at the esophagus and cause serious damage. Treatment includes changing the diet to avoid trigger foods, losing weight if needed, medications, or even surgery.

Hemorrhoids are blood vessels around the rectum that become irritated, swollen or torn while straining during a bowel movement. They are most often caused by constipation, but can also be caused by pregnancy, diarrhea, or simply a genetic predisposition towards hemorrhoids. Treatment involves first treating any constipation issues, then keeping the area clean and soothed until it has healed. If these measures are ineffective, surgery is sometimes used.

Peptic ulcers are sores or spots of inflammation in the lining of the stomach or close to the stomach in the small intestine. Usually this area is coated with a protective lining that shields the tissue from the strong stomach acid, but a break in the lining can let acid in, causing the sores. It used to be thought that stress caused ulcers, but now it is known that is not the case. Most often, they are caused by an infection by H. pylori bacteria, but ulcers can also be caused by alcohol abuse or overuse of aspirin, ibuprofen, naproxen, or other NSAIDS. The symptoms of an ulcer are pain, hunger, nausea, and fatigue.

Gastrointestinal problems, perhaps more than any other area, are markedly affected by lifestyle. Many disorders can be prevented or treated at least in part by eating a healthy diet high in fiber, exercising regularly, drinking enough water, and limiting alcohol intake. Still, the frequency of digestive disorders means that even the healthiest person can be affected by them. Anyone who notices blood in their stool, experiences abdominal pain, unexplained weight loss, or any significant change in bowel movements should see a doctor.

Noteworthy Medicare Patient Procedures Performed by Dr. Aaron Patrick Fieker, DO in 2023

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

Top 5%

By Affordability:

colonoscopy with submucosal injection

endoscopic injection

In 2023, Dr. Aaron Patrick Fieker, DO had a list price for colonoscopy with submucosal injection, and endoscopic injection that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Oklahoma. 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 10%

By Volume:

EGD with esophageal dilation

In 2023, Dr. Aaron Patrick Fieker, DO performed more EGD with esophageal dilation procedures for Medicare patients than 90% of providers in related specialties within Oklahoma.

Top 25%

By Volume:

EGD for treatment of gastrointestinal bleeding

EGD with biopsy

EGD with lesion removal

endoscopy

esophageal balloon dilation

esophageal dilation

gastrointestinal endoscopy

inpatient hospital care

By Affordability:

anastomosis

EGD with catheter placement

inpatient hospital care

ostomy

percutaneous endoscopic gastrostomy

percutaneous gastrostomy

therapeutic ERCP

In 2012, among providers in related specialties within Oklahoma, Dr. Aaron Patrick Fieker, DO performed more EGD for treatment of gastrointestinal bleeding, EGD with biopsy, EGD with lesion removal, endoscopy, esophageal balloon dilation, esophageal dilation, gastrointestinal (GI) endoscopy, and inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of them and he also had a list price for anastomosis, EGD with catheter placement, ERCP (biliary and pancreatic endoscopy), gastrostomy (G-tube insertion), hospital care, inpatient care, inpatient hospital care (for patient admitted to hospital), ostomy, percutaneous endoscopic gastrostomy (PEG), percutaneous gastrostomy, and therapeutic ERCP 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. Aaron Patrick Fieker, DO treated as a gastroenterologist in Tulsa, OK during 2012 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Aaron Patrick Fieker, DO for Medicare patients.

diagnostic procedures	53
doctor visit	84
gastrointestinal procedures	91
hospital care	71
inpatient care	71
minimally invasive procedures	91
preventive care	11
removal of lesion (e.g. growth)	53

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Aaron Patrick Fieker, DO treated as a gastroenterologist in Tulsa, OK during 2013 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Aaron Patrick Fieker, DO for Medicare patients.

diagnostic procedures	195
doctor visit	223
esophageal dilation	15
gastrointestinal procedures	343
hospital care	205
inpatient care	205
minimally invasive procedures	343
preventive care	43
removal of lesion (e.g. growth)	195

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Aaron Patrick Fieker, DO.

**Gender**
Male	136
Female	230

**Ethnicity**
Non-Hispanic White	302
Black	33
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	150
From 75 to 84	73
85 and over	48
Less than 65	95

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2013

Hypertension	72
High Cholesterol	51
Stroke	6
Ischemic Heart Disease	42
Depression	33
Chronic Kidney Disease	33
Asthma	10
Osteoperosis	11
Atrial Fibrilation	13
Heart Failure	26
Chronic Obstructive Pulmonary Disease	20
Diabetes	31
Dementia	17
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Aaron Patrick Fieker, DO treated as a gastroenterologist in Tulsa, OK during 2014 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Aaron Patrick Fieker, DO for Medicare patients.

balloon dilation	21
diagnostic procedures	198
doctor visit	238
esophageal dilation	21
gastrointestinal procedures	373
hospital care	190
inpatient care	190
minimally invasive procedures	373
preventive care	47
removal of lesion (e.g. growth)	198

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Aaron Patrick Fieker, DO.

**Gender**
Male	179
Female	212

**Ethnicity**
Non-Hispanic White	328
Black	30
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	161
From 75 to 84	95
85 and over	42
Less than 65	93

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2014

Hypertension	73
High Cholesterol	50
Stroke	8
Ischemic Heart Disease	37
Depression	33
Chronic Kidney Disease	34
Asthma	8
Osteoperosis	6
Atrial Fibrilation	14
Heart Failure	29
Chronic Obstructive Pulmonary Disease	20
Diabetes	30
Dementia	12
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Aaron Patrick Fieker, DO treated as a gastroenterologist in Tulsa, OK during 2015 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Aaron Patrick Fieker, DO for Medicare patients.

balloon dilation	14
diagnostic procedures	249
doctor visit	273
esophageal dilation	32
gastrointestinal procedures	425
hospital care	224
inpatient care	224
minimally invasive procedures	425
preventive care	30
removal of lesion (e.g. growth)	249

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Aaron Patrick Fieker, DO.

**Gender**
Male	384
Female	488

**Ethnicity**
Non-Hispanic White	722
Black	74
Hispanic	0
Asian	0
Other	0
Native American	48

**Age**
From 65 to 74	386
From 75 to 84	206
85 and over	88
Less than 65	192

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2015

Hypertension	75
High Cholesterol	46
Stroke	7
Ischemic Heart Disease	37
Depression	38
Chronic Kidney Disease	36
Asthma	15
Osteoperosis	9
Atrial Fibrilation	14
Heart Failure	25
Chronic Obstructive Pulmonary Disease	22
Diabetes	31
Dementia	11
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Aaron Patrick Fieker, DO treated as a gastroenterologist in Tulsa, OK during 2016 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Aaron Patrick Fieker, DO for Medicare patients.

balloon dilation	30
diagnostic procedures	287
doctor visit	299
esophageal dilation	49
gastrointestinal procedures	501
hospital care	196
inpatient care	196
minimally invasive procedures	501
preventive care	38
removal of lesion (e.g. growth)	287

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Aaron Patrick Fieker, DO.

**Gender**
Male	202
Female	306

**Ethnicity**
Non-Hispanic White	419
Black	42
Hispanic	0
Asian	0
Other	0
Native American	30

**Age**
From 65 to 74	219
From 75 to 84	147
85 and over	47
Less than 65	95

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2016

Hypertension	75
High Cholesterol	47
Stroke	7
Ischemic Heart Disease	33
Depression	34
Chronic Kidney Disease	38
Asthma	20
Osteoperosis	11
Atrial Fibrilation	15
Heart Failure	23
Chronic Obstructive Pulmonary Disease	19
Diabetes	32
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Aaron Patrick Fieker, DO treated as a gastroenterologist in Tulsa, OK during 2017 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Aaron Patrick Fieker, DO for Medicare patients.

anastomosis	15
balloon dilation	31
catheterization	15
diagnostic procedures	237
doctor visit	271
esophageal dilation	31
gastrointestinal procedures	418
hospital care	133
inpatient care	133
minimally invasive procedures	418
preventive care	55
removal of lesion (e.g. growth)	237

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Aaron Patrick Fieker, DO.

**Gender**
Male	201
Female	279

**Ethnicity**
Non-Hispanic White	406
Black	33
Hispanic	0
Asian	0
Other	0
Native American	25

**Age**
From 65 to 74	218
From 75 to 84	120
85 and over	57
Less than 65	85

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2017

Hypertension	75
High Cholesterol	48
Stroke	7
Ischemic Heart Disease	37
Depression	34
Chronic Kidney Disease	43
Asthma	10
Osteoperosis	8
Atrial Fibrilation	13
Heart Failure	26
Chronic Obstructive Pulmonary Disease	21
Diabetes	32
Dementia	13
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Aaron Patrick Fieker, DO treated as a gastroenterologist in Tulsa, OK during 2018 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Aaron Patrick Fieker, DO for Medicare patients.

anastomosis	28
balloon dilation	27
catheterization	28
diagnostic procedures	255
doctor visit	245
esophageal dilation	49
gastrointestinal procedures	489
hospital care	272
injections	13
inpatient care	272
minimally invasive procedures	489
preventive care	50
removal of lesion (e.g. growth)	255

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Aaron Patrick Fieker, DO.

**Gender**
Male	226
Female	313

**Ethnicity**
Non-Hispanic White	450
Black	38
Hispanic	0
Asian	0
Other	0
Native American	32

**Age**
From 65 to 74	226
From 75 to 84	162
85 and over	72
Less than 65	79

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2018

Hypertension	75
High Cholesterol	62
Stroke	10
Ischemic Heart Disease	49
Depression	35
Chronic Kidney Disease	51
Asthma	12
Osteoperosis	14
Atrial Fibrilation	19
Heart Failure	34
Chronic Obstructive Pulmonary Disease	26
Diabetes	37
Dementia	20
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Aaron Patrick Fieker, DO treated as a gastroenterologist in Tulsa, OK during 2019 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Aaron Patrick Fieker, DO for Medicare patients.

anastomosis	40
balloon dilation	34
catheterization	40
diagnostic procedures	337
doctor visit	246
esophageal dilation	51
gastrointestinal procedures	629
hospital care	415
inpatient care	415
minimally invasive procedures	629
preventive care	53
removal of lesion (e.g. growth)	337
stent placement (stenting)	13

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Aaron Patrick Fieker, DO.

**Gender**
Male	300
Female	393

**Ethnicity**
Non-Hispanic White	543
Black	48
Hispanic	17
Asian	0
Other	0
Native American	72

**Age**
From 65 to 74	269
From 75 to 84	225
85 and over	83
Less than 65	116

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2019

Hypertension	75
High Cholesterol	71
Stroke	11
Ischemic Heart Disease	51
Depression	39
Chronic Kidney Disease	58
Asthma	11
Osteoperosis	13
Atrial Fibrilation	17
Heart Failure	40
Chronic Obstructive Pulmonary Disease	30
Diabetes	43
Dementia	23
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Aaron Patrick Fieker, DO treated as a gastroenterologist in Tulsa, OK during 2020 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Aaron Patrick Fieker, DO for Medicare patients.

anastomosis	29
balloon dilation	33
catheterization	29
diagnostic procedures	312
doctor visit	279
esophageal dilation	50
gastrointestinal procedures	562
hospital care	195
injections	11
inpatient care	195
minimally invasive procedures	562
preventive care	49
removal of lesion (e.g. growth)	312

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Aaron Patrick Fieker, DO.

**Gender**
Male	269
Female	338

**Ethnicity**
Non-Hispanic White	490
Black	39
Hispanic	12
Asian	0
Other	0
Native American	51

**Age**
From 65 to 74	249
From 75 to 84	182
85 and over	72
Less than 65	104

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2020

Hypertension	75
High Cholesterol	66
Stroke	8
Ischemic Heart Disease	46
Depression	37
Chronic Kidney Disease	53
Asthma	11
Osteoperosis	13
Atrial Fibrilation	16
Heart Failure	34
Chronic Obstructive Pulmonary Disease	26
Diabetes	35
Dementia	18
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Aaron Patrick Fieker, DO treated as a gastroenterologist in Tulsa, OK during 2021 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Aaron Patrick Fieker, DO for Medicare patients.

anastomosis	21
balloon dilation	36
catheterization	21
diagnostic procedures	341
doctor visit	299
esophageal dilation	36
gastrointestinal procedures	522
hospital care	142
injections	11
inpatient care	142
minimally invasive procedures	522
preventive care	39
removal of lesion (e.g. growth)	341

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Aaron Patrick Fieker, DO.

**Gender**
Male	233
Female	325

**Ethnicity**
Non-Hispanic White	479
Black	21
Hispanic	0
Asian	0
Other	0
Native American	38

**Age**
From 65 to 74	255
From 75 to 84	157
85 and over	62
Less than 65	84

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2021

Hypertension	75
High Cholesterol	68
Stroke	8
Ischemic Heart Disease	43
Depression	38
Chronic Kidney Disease	48
Asthma	10
Osteoperosis	11
Atrial Fibrilation	17
Heart Failure	29
Chronic Obstructive Pulmonary Disease	22
Diabetes	37
Dementia	19
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Aaron Patrick Fieker, DO treated as a gastroenterologist in Tulsa, OK during 2022 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Aaron Patrick Fieker, DO for Medicare patients.

anastomosis	13
balloon dilation	44
catheterization	13
diagnostic procedures	352
doctor visit	277
esophageal dilation	65
gastrointestinal procedures	562
hospital care	243
injections	14
inpatient care	243
minimally invasive procedures	562
preventive care	47
removal of lesion (e.g. growth)	352

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Aaron Patrick Fieker, DO.

**Gender**
Male	269
Female	360

**Ethnicity**
Non-Hispanic White	530
Black	29
Hispanic	0
Asian	12
Other	0
Native American	42

**Age**
From 65 to 74	258
From 75 to 84	213
85 and over	78
Less than 65	80

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2022

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	38
Depression	35
Chronic Kidney Disease	34
Asthma	13
Osteoperosis	15
Atrial Fibrilation	27
Heart Failure	28
Chronic Obstructive Pulmonary Disease	24
Diabetes	35
Dementia	15
Cancer	18

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Aaron Patrick Fieker, DO treated as a gastroenterologist in Tulsa, OK during 2023 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Aaron Patrick Fieker, DO for Medicare patients.

anastomosis	14
balloon dilation	54
catheterization	14
diagnostic procedures	316
doctor visit	303
esophageal dilation	89
gastrointestinal procedures	557
hospital care	262
injections	12
inpatient care	262
minimally invasive procedures	557
preventive care	50
removal of lesion (e.g. growth)	316

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Aaron Patrick Fieker, DO.

**Gender**
Male	282
Female	339

**Ethnicity**
Non-Hispanic White	532
Black	26
Hispanic	11
Asian	0
Other	0
Native American	35

**Age**
From 65 to 74	284
From 75 to 84	199
85 and over	70
Less than 65	68

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2023

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	38
Depression	34
Chronic Kidney Disease	37
Asthma	14
Osteoperosis	19
Atrial Fibrilation	26
Heart Failure	32
Chronic Obstructive Pulmonary Disease	26
Diabetes	33
Dementia	11
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Aaron Patrick Fieker, DO for Medicare patients.

The highest averages for the top procedures that Dr. Aaron Patrick Fieker, DO treated as a gastroenterologist in Tulsa, OK were gastrointestinal procedures, minimally invasive procedures, diagnostic procedures and removal of lesion (e.g. growth).

anastomosis	22
balloon dilation	32
catheterization	22
diagnostic procedures	261
doctor visit	253
esophageal dilation	44
gastrointestinal procedures	456
hospital care	212
injections	12
inpatient care	212
minimally invasive procedures	456
preventive care	42
removal of lesion (e.g. growth)	261
stent placement (stenting)	13

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Aaron Patrick Fieker, DO.

**Gender**
Male	223
Female	298

**Ethnicity**
Black / African American	34
Asian / Pacific Islander	1
Non-Hispanic White	433
Hispanic	3
Native American / Alaskan Native	31
Other	0

**Age**
75 to 84	148
85 and over	59
Less than 65	90
65 to 74	222

Average of Total of Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Aaron Patrick Fieker, DO treated were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	68
High Cholesterol	54
Stroke	7
Ischemic Heart Disease	37
Depression	32
Chronic Kidney Disease	38
Asthma	11
Osteoporosis	10
Heart Failure	27
Chronic Obstructive Pulmonary Disease	21
Diabetes	31
Atrial Fibrillation	15
Cancer	12
Dementia	14

Education & Training

Dr. Aaron Patrick Fieker, DO graduated from Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine. He completed residency at University of Tennessee Affiliated Hospitals. He is certified by the The American Board of Internal Medicine - Gastroenterology and has a state license in Oklahoma.

Medical School: Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine

Residency: University of Tennessee Affiliated Hospitals

Board Certification: The American Board of Internal Medicine - Gastroenterology

Licensed In: Oklahoma

Affiliations & Hospitals

Dr. Aaron Patrick Fieker, DO is associated with these hospitals and organizations:

Saint Francis Health System

Ascension

Ascension St. John Jane Phillips

Ascension St. John Medical Center

Warren Clinic Gastroenterology

Ascension St. John Broken Arrow

Ratings & Reviews

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General Payments

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

**Payments by Company**
AbbVie Inc.	$3,252 Skyrizi $905	Humira $796	Rinvoq $667	Creon $424	Mavyret $260	Other $200
Boston Scientific Corporation	$2,520 Biliary Devices $1,297	POLYPECTOMY $512	SPYGLASS $278	HEMOSTASIS $155	EXALT BX 2 $99	Other $178
Janssen Biotech, Inc.	$1,972 STELARA $1,142	SIMPONI $574	REMICADE $203	OLYSIO $39	Tremfya $14
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$1,776 XIFAXAN $1,204	Trulance $385	ENVIVE $52	Relistor $42	XIFAXANIBSD $38	Other $55
AbbVie, Inc.	$1,541 Humira $1,052	Mavyret $136	Viekira $127	Creon $104	Technivie $56	Other $65
Other	$10,031 ENTYVIO $1,209	Ocaliva $754	Cimzia $353	LINZESS $323	STELARA $314	Other $7,078

**Types of Payments**
Food and Beverage	$19,323
Travel and Lodging	$1,437
Education	$332

Research Payments

Dr. Aaron Patrick Fieker, DO has received 12 research payments totaling $185,686.

Biography

Dr. Aaron Fieker is a physician who specializes in gastroenterology (digestive system). Areas of particular interest for Dr. Fieker include gastrointestinal problems (digestive disorders). Dr. Fieker graduated from Oklahoma State University Center for Health Sciences, College of Osteopathic Medicine. His training includes a residency program at a hospital affiliated with the University of Tennessee. His hospital/clinic affiliations include Ascension and Saint Francis Health System.

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Dr. Aaron Patrick Fieker, DO

Office Locations

Some issues Dr. Aaron Patrick Fieker, DO can help you with:

Noteworthy Medicare Patient Procedures Performed by Dr. Aaron Patrick Fieker, DO in 2023

By Affordability:

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. Aaron Patrick Fieker, DO in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO in 2023

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Average Medicare Patient Data From 2012 - 2023

Average of Total of Conditions of Medicare patients treated by Dr. Aaron Patrick Fieker, DO From 2012 - 2023

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Research Payments

Biography

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