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Dr. Gary David Koenig, MD

(1 Rating)

Specializes in: Adult Gastroenterology

St. Louis University School of Medicine

20 Progress Point Parkway Suite 206
O'Fallon, MO 63368

(636) 344-1073

Dr. Gary David Koenig, MD is a gastroenterologist in Hazelwood, MO specializing in adult gastroenterology. He graduated from St. Louis University School of Medicine. Dr. Gary David Koenig, MD is affiliated with SSM Health DePaul Hospital, SSM Health and SSM Health St. Clare Hospital - Fenton.

Office Locations

100 Village Square Shop Center
Hazelwood, MO 63042

open_in_new

20 Progress Point Parkway Suite 206
O'Fallon, MO 63368

(636) 344-1073

(636) 916-9953

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Noteworthy Medicare Patient Procedures Performed by Dr. Gary David Koenig, MD in 2023

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

Top 5%

By Affordability:

diagnostic EGD

diagnostic EGD without biopsy

diagnostic upper endoscopy

EGD with biopsy

EGD with lesion removal

esophagogastroduodenoscopy

therapeutic EGD

therapeutic upper endoscopy

upper endoscopy

upper endoscopy with biopsy

upper endoscopy with lesion removal

In 2023, Dr. Gary David Koenig, MD had a list price for diagnostic EGD, diagnostic EGD without biopsy, diagnostic upper endoscopy, EGD with biopsy, EGD with lesion removal, esophagogastroduodenoscopy (EGD), therapeutic EGD, therapeutic upper endoscopy, upper endoscopy, upper endoscopy with biopsy, and upper endoscopy with lesion removal that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Missouri. 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. Gary David Koenig, MD treated as a gastroenterologist in Hazelwood, MO during 2012 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Gary David Koenig, MD for Medicare patients.

diagnostic procedures	181
doctor visit	130
gastrointestinal procedures	325
hospital care	354
injections	13
inpatient care	354
minimally invasive procedures	325
preventive care	104
removal of lesion (e.g. growth)	181

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gary David Koenig, MD treated as a gastroenterologist in Hazelwood, MO during 2013 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Gary David Koenig, MD for Medicare patients.

anastomosis	17
catheterization	17
diagnostic procedures	223
doctor visit	131
gastrointestinal procedures	388
hospital care	309
injections	15
inpatient care	309
minimally invasive procedures	388
preventive care	105
removal of lesion (e.g. growth)	223

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary David Koenig, MD.

**Gender**
Male	201
Female	286

**Ethnicity**
Non-Hispanic White	265
Black	211
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	203
From 75 to 84	112
85 and over	68
Less than 65	104

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2013

Hypertension	75
High Cholesterol	55
Stroke	11
Ischemic Heart Disease	43
Depression	28
Chronic Kidney Disease	39
Asthma	13
Osteoperosis	10
Atrial Fibrilation	13
Heart Failure	31
Chronic Obstructive Pulmonary Disease	21
Diabetes	47
Dementia	18
Cancer	14

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gary David Koenig, MD treated as a gastroenterologist in Hazelwood, MO during 2014 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Gary David Koenig, MD for Medicare patients.

anastomosis	20
catheterization	20
diagnostic procedures	171
doctor visit	85
gastrointestinal procedures	368
hospital care	337
injections	22
inpatient care	337
minimally invasive procedures	368
preventive care	91
removal of lesion (e.g. growth)	171

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary David Koenig, MD.

**Gender**
Male	176
Female	256

**Ethnicity**
Non-Hispanic White	232
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	185
From 75 to 84	90
85 and over	62
Less than 65	95

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2014

Hypertension	75
High Cholesterol	59
Stroke	11
Ischemic Heart Disease	44
Depression	38
Chronic Kidney Disease	46
Asthma	13
Osteoperosis	7
Atrial Fibrilation	11
Heart Failure	37
Chronic Obstructive Pulmonary Disease	26
Diabetes	48
Dementia	19
Cancer	15

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gary David Koenig, MD treated as a gastroenterologist in Hazelwood, MO during 2015 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Gary David Koenig, MD for Medicare patients.

diagnostic procedures	142
doctor visit	106
gastrointestinal procedures	285
hospital care	256
inpatient care	256
minimally invasive procedures	285
preventive care	78
removal of lesion (e.g. growth)	142

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary David Koenig, MD.

**Gender**
Male	332
Female	478

**Ethnicity**
Non-Hispanic White	478
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	336
From 75 to 84	236
85 and over	96
Less than 65	142

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2015

Hypertension	75
High Cholesterol	61
Stroke	11
Ischemic Heart Disease	40
Depression	30
Chronic Kidney Disease	43
Asthma	14
Osteoperosis	7
Atrial Fibrilation	16
Heart Failure	30
Chronic Obstructive Pulmonary Disease	19
Diabetes	43
Dementia	19
Cancer	15

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gary David Koenig, MD treated as a gastroenterologist in Hazelwood, MO during 2016 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Gary David Koenig, MD for Medicare patients.

anastomosis	18
blood draw	30
catheterization	18
diagnostic procedures	179
doctor visit	197
gastrointestinal procedures	331
hospital care	294
injections	12
inpatient care	283
lab tests	13
minimally invasive procedures	342
outpatient care	11
preventive care	86
removal of lesion (e.g. growth)	179

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary David Koenig, MD.

**Gender**
Male	236
Female	291

**Ethnicity**
Non-Hispanic White	317
Black	199
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	215
From 75 to 84	142
85 and over	58
Less than 65	112

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2016

Hypertension	75
High Cholesterol	57
Stroke	8
Ischemic Heart Disease	40
Depression	32
Chronic Kidney Disease	47
Asthma	26
Osteoperosis	8
Atrial Fibrilation	13
Heart Failure	30
Chronic Obstructive Pulmonary Disease	22
Diabetes	40
Dementia	19
Cancer	15

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gary David Koenig, MD treated as a gastroenterologist in Hazelwood, MO during 2017 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Gary David Koenig, MD for Medicare patients.

blood draw	44
diagnostic procedures	180
doctor visit	230
gastrointestinal procedures	298
hospital care	190
inpatient care	190
lab tests	38
minimally invasive procedures	298
preventive care	93
removal of lesion (e.g. growth)	180

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary David Koenig, MD.

**Gender**
Male	216
Female	318

**Ethnicity**
Non-Hispanic White	346
Black	175
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	227
From 75 to 84	143
85 and over	60
Less than 65	104

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2017

Hypertension	75
High Cholesterol	52
Stroke	8
Ischemic Heart Disease	39
Depression	31
Chronic Kidney Disease	47
Asthma	13
Osteoperosis	5
Atrial Fibrilation	13
Heart Failure	31
Chronic Obstructive Pulmonary Disease	25
Diabetes	39
Dementia	15
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gary David Koenig, MD treated as a gastroenterologist in Hazelwood, MO during 2018 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Gary David Koenig, MD for Medicare patients.

anastomosis	17
blood draw	15
catheterization	17
diagnostic procedures	211
doctor visit	101
gastrointestinal procedures	408
hospital care	317
inpatient care	317
minimally invasive procedures	408
preventive care	115
removal of lesion (e.g. growth)	211

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary David Koenig, MD.

**Gender**
Male	223
Female	323

**Ethnicity**
Non-Hispanic White	306
Black	226
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	236
From 75 to 84	148
85 and over	58
Less than 65	104

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2018

Hypertension	75
High Cholesterol	64
Stroke	11
Ischemic Heart Disease	44
Depression	34
Chronic Kidney Disease	53
Asthma	10
Osteoperosis	7
Atrial Fibrilation	12
Heart Failure	33
Chronic Obstructive Pulmonary Disease	24
Diabetes	45
Dementia	21
Cancer	16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gary David Koenig, MD treated as a gastroenterologist in Hazelwood, MO during 2019 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Gary David Koenig, MD for Medicare patients.

anastomosis	15
catheterization	15
diagnostic procedures	182
doctor visit	87
gastrointestinal procedures	339
hospital care	254
inpatient care	254
minimally invasive procedures	339
preventive care	92
removal of lesion (e.g. growth)	195

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary David Koenig, MD.

**Gender**
Male	198
Female	272

**Ethnicity**
Non-Hispanic White	271
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	213
From 75 to 84	135
85 and over	45
Less than 65	77

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2019

Hypertension	75
High Cholesterol	67
Stroke	10
Ischemic Heart Disease	43
Depression	30
Chronic Kidney Disease	53
Asthma	12
Osteoperosis	6
Atrial Fibrilation	15
Heart Failure	38
Chronic Obstructive Pulmonary Disease	23
Diabetes	43
Dementia	20
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gary David Koenig, MD treated as a gastroenterologist in Hazelwood, MO during 2020 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Gary David Koenig, MD for Medicare patients.

blood draw	18
diagnostic procedures	149
doctor visit	55
gastrointestinal procedures	236
hospital care	66
inpatient care	66
minimally invasive procedures	236
preventive care	65
removal of lesion (e.g. growth)	149

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary David Koenig, MD.

**Gender**
Male	139
Female	163

**Ethnicity**
Non-Hispanic White	190
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	141
From 75 to 84	103
85 and over	16
Less than 65	42

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2020

Hypertension	75
High Cholesterol	54
Stroke	7
Ischemic Heart Disease	37
Depression	27
Chronic Kidney Disease	43
Asthma	11
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	27
Chronic Obstructive Pulmonary Disease	17
Diabetes	41
Dementia	16
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gary David Koenig, MD treated as a gastroenterologist in Hazelwood, MO during 2021 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Gary David Koenig, MD for Medicare patients.

diagnostic procedures	156
doctor visit	53
gastrointestinal procedures	284
hospital care	42
inpatient care	42
minimally invasive procedures	284
preventive care	96
removal of lesion (e.g. growth)	171

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary David Koenig, MD.

**Gender**
Male	144
Female	171

**Ethnicity**
Non-Hispanic White	187
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	171
From 75 to 84	87
85 and over	12
Less than 65	45

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2021

Hypertension	74
High Cholesterol	66
Stroke	5
Ischemic Heart Disease	31
Depression	25
Chronic Kidney Disease	38
Asthma	10
Osteoperosis	7
Atrial Fibrilation	8
Heart Failure	21
Chronic Obstructive Pulmonary Disease	13
Diabetes	39
Dementia	7
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gary David Koenig, MD treated as a gastroenterologist in Hazelwood, MO during 2022 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Gary David Koenig, MD for Medicare patients.

diagnostic procedures	119
doctor visit	78
gastrointestinal procedures	217
hospital care	75
inpatient care	75
minimally invasive procedures	217
preventive care	86
removal of lesion (e.g. growth)	119

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary David Koenig, MD.

**Gender**
Male	123
Female	174

**Ethnicity**
Non-Hispanic White	198
Black	86
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	158
From 75 to 84	91
85 and over	23
Less than 65	25

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	30
Depression	27
Chronic Kidney Disease	33
Asthma	16
Osteoperosis	10
Atrial Fibrilation	18
Heart Failure	24
Chronic Obstructive Pulmonary Disease	18
Diabetes	37
Dementia	9
Cancer	20

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Gary David Koenig, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gary David Koenig, MD treated as a gastroenterologist in Hazelwood, MO were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

anastomosis	17
blood draw	26
catheterization	17
diagnostic procedures	172
doctor visit	113
gastrointestinal procedures	316
hospital care	226
injections	15
inpatient care	225
lab tests	25
minimally invasive procedures	317
outpatient care	11
preventive care	91
removal of lesion (e.g. growth)	174

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Gary David Koenig, MD.

**Gender**
Male	180
Female	248

**Ethnicity**
Black / African American	81
Asian / Pacific Islander	0
Non-Hispanic White	253
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	117
85 and over	45
Less than 65	77
65 to 74	189

Average of Total of Conditions of Medicare patients treated by Dr. Gary David Koenig, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Gary David Koenig, MD treated were hypertension, high cholesterol, chronic kidney disease and diabetes.

Hypertension	68
High Cholesterol	55
Stroke	8
Ischemic Heart Disease	35
Depression	27
Chronic Kidney Disease	40
Asthma	12
Osteoporosis	6
Heart Failure	27
Chronic Obstructive Pulmonary Disease	18
Diabetes	38
Atrial Fibrillation	12
Dementia	14
Cancer	13

Education & Training

Dr. Gary David Koenig, MD graduated from St. Louis University School of Medicine. He completed residency at SSM St. Mary's Health Center, St. Louis. He is certified by the American Board of Internal Medicine Drug Enforcement Administration Missouri Dept of Health/Narcotics&Dangerous Drugs Missouri State Board of Registration and has a state license in Missouri.

Medical School: St. Louis University School of Medicine

Residency: SSM St. Mary's Health Center, St. Louis

Board Certification: American Board of Internal Medicine Drug Enforcement Administration Missouri Dept of Health/Narcotics&Dangerous Drugs Missouri State Board of Registration

Licensed In: Missouri

Affiliations & Hospitals

Dr. Gary David Koenig, MD is associated with these hospitals and organizations:

SSM Health DePaul Hospital

SSM Health

SSM Health St. Clare Hospital - Fenton

Ratings & Reviews

Dr. Gary David Koenig, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 1 ratings. We collect ratings and reviews of Dr. Gary David Koenig, MD from all over the web to help you find the right in Hazelwood, MO.

Overall Rating

(1 Rating)

Leave a Review

Reviews Left On DocSpot

Overall Rating: 5.0 2023-08-14

Had a procedure with Dr. Koenig and he was amazing. Explained the procedure to me and after i was out of anesthesia, he explained everything my results to me. He is amazing. Will be my new GI doc forever!

General Payments

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

**Payments by Company**
AbbVie, Inc.	$5,239 Humira $2,036	Mavyret $995	Viekira $939	Creon $372	Lupron $217	Other $679
AbbVie Inc.	$3,532 Humira $796	Mavyret $758	Rinvoq $602	Skyrizi $546	LINZESS $391	Other $438
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$2,665 XIFAXAN $1,771	Trulance $602	XIFAXANIBSD $112	Uceris $71	PLENVU $43	Other $67
Janssen Biotech, Inc.	$2,403 STELARA $1,274	SIMPONI $637	REMICADE $286	SIMPONI ARIA $108	OLYSIO $30	Other $68
Takeda Pharmaceuticals U.S.A., Inc.	$1,321 ENTYVIO $898	MOTEGRITY $119	AMITIZA $118	Dexilant $80	GATTEX $71	Other $36
Other	$13,938 ENTYVIO $712	VIBERZI $662	Cimzia $580	GENERAL BILIARY DEVICES $575	ZEPOSIA $501	Other $10,908

**Types of Payments**
Food and Beverage	$27,539
Travel and Lodging	$575
Education	$464
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$250
Gift	$189
Other	$81

Biography

Dr. Gary Koenig's medical specialty is adult gastroenterology. Dr. Koenig graduated from St. Louis University School of Medicine and then he performed his residency at SSM St. Mary's Health Center, St. Louis. His hospital/clinic affiliations include SSM Health DePaul Hospital and SSM Health St. Clare Hospital - Fenton.

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Dr. Gary David Koenig, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Gary David Koenig, MD in 2023

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. Gary David Koenig, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary David Koenig, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary David Koenig, 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. Gary David Koenig, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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