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Dr. Gregory H. Johnson, MD

(5 Ratings)

Specializes in: Adult Gastroenterology

227 W Janss Road #215
Thousand Oaks, CA 91360

(805) 497-9597

Dr. Gregory H. Johnson, MD is a gastroenterologist in Thousand Oaks, CA specializing in adult gastroenterology.

Office Locations

227 W Janss Road #215
Thousand Oaks, CA 91360

(805) 497-9597

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Gregory H. Johnson, MD treated as a gastroenterologist in Thousand Oaks, CA during 2012 were lab tests, inpatient care, hospital care and gastrointestinal procedures.

Volume of procedures performed by Dr. Gregory H. Johnson, MD for Medicare patients.

anastomosis	32
balloon dilation	49
blood draw	548
catheterization	32
diagnostic procedures	521
doctor visit	770
esophageal dilation	66
gastrointestinal procedures	885
hospital care	1214
inpatient care	1214
lab tests	1434
minimally invasive procedures	885
preventive care	251
removal of lesion (e.g. growth)	510
thyroid function tests	132

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gregory H. Johnson, MD treated as a gastroenterologist in Thousand Oaks, CA during 2013 were inpatient care, hospital care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Gregory H. Johnson, MD for Medicare patients.

anastomosis	20
balloon dilation	51
blood draw	108
catheterization	20
diagnostic procedures	472
doctor visit	792
esophageal dilation	51
gastrointestinal procedures	855
hospital care	1350
inpatient care	1350
lab tests	271
minimally invasive procedures	876
preventive care	257
removal of lesion (e.g. growth)	472
thyroid function tests	28

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory H. Johnson, MD.

**Gender**
Male	430
Female	508

**Ethnicity**
Non-Hispanic White	861
Black	0
Hispanic	34
Asian	0
Other	20
Native American	0

**Age**
From 65 to 74	466
From 75 to 84	302
85 and over	135
Less than 65	35

Conditions of Medicare patients treated by Dr. Gregory H. Johnson, MD in 2013

Hypertension	67
High Cholesterol	64
Stroke	6
Ischemic Heart Disease	45
Depression	14
Chronic Kidney Disease	22
Asthma	10
Osteoperosis	11
Atrial Fibrilation	15
Heart Failure	20
Chronic Obstructive Pulmonary Disease	12
Diabetes	24
Dementia	8
Cancer	15

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gregory H. Johnson, MD treated as a gastroenterologist in Thousand Oaks, CA during 2014 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Gregory H. Johnson, MD for Medicare patients.

anastomosis	18
balloon dilation	41
catheterization	18
diagnostic procedures	442
doctor visit	984
esophageal dilation	41
gastrointestinal procedures	830
hospital care	1290
inpatient care	1290
minimally invasive procedures	847
preventive care	292
removal of lesion (e.g. growth)	431

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory H. Johnson, MD.

**Gender**
Male	438
Female	491

**Ethnicity**
Non-Hispanic White	848
Black	0
Hispanic	32
Asian	26
Other	0
Native American	0

**Age**
From 65 to 74	477
From 75 to 84	299
85 and over	127
Less than 65	26

Conditions of Medicare patients treated by Dr. Gregory H. Johnson, MD in 2014

Hypertension	64
High Cholesterol	62
Stroke	5
Ischemic Heart Disease	43
Depression	15
Chronic Kidney Disease	18
Asthma	10
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	17
Chronic Obstructive Pulmonary Disease	10
Diabetes	24
Dementia	7
Cancer	15

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gregory H. Johnson, MD treated as a gastroenterologist in Thousand Oaks, CA during 2015 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Gregory H. Johnson, MD for Medicare patients.

anastomosis	20
balloon dilation	46
catheterization	20
diagnostic procedures	423
doctor visit	1008
esophageal dilation	46
gastrointestinal procedures	814
hospital care	1271
inpatient care	1271
minimally invasive procedures	829
preventive care	261
removal of lesion (e.g. growth)	423

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory H. Johnson, MD.

**Gender**
Male	912
Female	1014

**Ethnicity**
Non-Hispanic White	1754
Black	0
Hispanic	82
Asian	0
Other	46
Native American	0

**Age**
From 65 to 74	918
From 75 to 84	664
85 and over	276
Less than 65	68

Conditions of Medicare patients treated by Dr. Gregory H. Johnson, MD in 2015

Hypertension	64
High Cholesterol	63
Stroke	6
Ischemic Heart Disease	44
Depression	17
Chronic Kidney Disease	21
Asthma	15
Osteoperosis	13
Atrial Fibrilation	12
Heart Failure	19
Chronic Obstructive Pulmonary Disease	12
Diabetes	27
Dementia	10
Cancer	15

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gregory H. Johnson, MD treated as a gastroenterologist in Thousand Oaks, CA during 2016 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Gregory H. Johnson, MD for Medicare patients.

balloon dilation	62
diagnostic procedures	457
doctor visit	1118
esophageal dilation	62
gastrointestinal procedures	843
hospital care	1167
inpatient care	1167
minimally invasive procedures	859
preventive care	274
removal of lesion (e.g. growth)	457

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory H. Johnson, MD.

**Gender**
Male	447
Female	548

**Ethnicity**
Non-Hispanic White	918
Black	0
Hispanic	32
Asian	0
Other	23
Native American	0

**Age**
From 65 to 74	464
From 75 to 84	356
85 and over	149
Less than 65	26

Conditions of Medicare patients treated by Dr. Gregory H. Johnson, MD in 2016

Hypertension	68
High Cholesterol	65
Stroke	6
Ischemic Heart Disease	45
Depression	17
Chronic Kidney Disease	27
Asthma	17
Osteoperosis	13
Atrial Fibrilation	13
Heart Failure	20
Chronic Obstructive Pulmonary Disease	12
Diabetes	27
Dementia	10
Cancer	16

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gregory H. Johnson, MD treated as a gastroenterologist in Thousand Oaks, CA during 2017 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Gregory H. Johnson, MD for Medicare patients.

anastomosis	15
balloon dilation	44
catheterization	15
diagnostic procedures	452
doctor visit	1197
esophageal dilation	44
gastrointestinal procedures	834
hospital care	1286
inpatient care	1286
minimally invasive procedures	850
preventive care	296
removal of lesion (e.g. growth)	452

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory H. Johnson, MD.

**Gender**
Male	464
Female	560

**Ethnicity**
Non-Hispanic White	946
Black	0
Hispanic	24
Asian	0
Other	26
Native American	0

**Age**
From 65 to 74	474
From 75 to 84	376
85 and over	148
Less than 65	26

Conditions of Medicare patients treated by Dr. Gregory H. Johnson, MD in 2017

Hypertension	66
High Cholesterol	47
Stroke	5
Ischemic Heart Disease	40
Depression	17
Chronic Kidney Disease	27
Asthma	10
Osteoperosis	15
Atrial Fibrilation	14
Heart Failure	17
Chronic Obstructive Pulmonary Disease	11
Diabetes	25
Dementia	9
Cancer	17

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gregory H. Johnson, MD treated as a gastroenterologist in Thousand Oaks, CA during 2018 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Gregory H. Johnson, MD for Medicare patients.

balloon dilation	57
diagnostic procedures	495
doctor visit	1233
esophageal dilation	57
gastrointestinal procedures	857
hospital care	951
injections	12
inpatient care	951
minimally invasive procedures	857
preventive care	241
removal of lesion (e.g. growth)	495

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory H. Johnson, MD.

**Gender**
Male	489
Female	519

**Ethnicity**
Non-Hispanic White	927
Black	0
Hispanic	31
Asian	23
Other	0
Native American	0

**Age**
From 65 to 74	456
From 75 to 84	406
85 and over	131
Less than 65	15

Conditions of Medicare patients treated by Dr. Gregory H. Johnson, MD in 2018

Hypertension	66
High Cholesterol	67
Stroke	5
Ischemic Heart Disease	41
Depression	15
Chronic Kidney Disease	29
Asthma	9
Osteoperosis	15
Atrial Fibrilation	13
Heart Failure	17
Chronic Obstructive Pulmonary Disease	12
Diabetes	24
Dementia	9
Cancer	17

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gregory H. Johnson, MD treated as a gastroenterologist in Thousand Oaks, CA during 2019 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Gregory H. Johnson, MD for Medicare patients.

balloon dilation	54
diagnostic procedures	481
doctor visit	1310
esophageal dilation	54
gastrointestinal procedures	841
hospital care	693
inpatient care	693
minimally invasive procedures	841
preventive care	265
removal of lesion (e.g. growth)	481

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory H. Johnson, MD.

**Gender**
Male	466
Female	500

**Ethnicity**
Non-Hispanic White	871
Black	0
Hispanic	34
Asian	18
Other	31
Native American	0

**Age**
From 65 to 74	446
From 75 to 84	391
85 and over	112
Less than 65	17

Conditions of Medicare patients treated by Dr. Gregory H. Johnson, MD in 2019

Hypertension	66
High Cholesterol	65
Stroke	4
Ischemic Heart Disease	36
Depression	17
Chronic Kidney Disease	28
Asthma	10
Osteoperosis	14
Atrial Fibrilation	14
Heart Failure	16
Chronic Obstructive Pulmonary Disease	11
Diabetes	23
Dementia	9
Cancer	17

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gregory H. Johnson, MD treated as a gastroenterologist in Thousand Oaks, CA during 2020 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Gregory H. Johnson, MD for Medicare patients.

diagnostic procedures	140
doctor visit	323
gastrointestinal procedures	225
hospital care	197
inpatient care	197
minimally invasive procedures	225
preventive care	85
removal of lesion (e.g. growth)	140

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory H. Johnson, MD.

**Gender**
Male	171
Female	188

**Ethnicity**
Non-Hispanic White	334
Black	0
Hispanic	0
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	148
From 75 to 84	166
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gregory H. Johnson, MD in 2020

Hypertension	64
High Cholesterol	64
Stroke	4
Ischemic Heart Disease	32
Depression	16
Chronic Kidney Disease	27
Asthma	7
Osteoperosis	16
Atrial Fibrilation	13
Heart Failure	11
Chronic Obstructive Pulmonary Disease	10
Diabetes	19
Dementia	6
Cancer	21

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2020

Volume of procedures performed by Dr. Gregory H. Johnson, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gregory H. Johnson, MD treated as a gastroenterologist in Thousand Oaks, CA were inpatient care, hospital care, lab tests and minimally invasive procedures.

anastomosis	21
balloon dilation	50
blood draw	328
catheterization	21
diagnostic procedures	431
doctor visit	970
esophageal dilation	52
gastrointestinal procedures	776
hospital care	1046
injections	12
inpatient care	1046
lab tests	852
minimally invasive procedures	785
preventive care	246
removal of lesion (e.g. growth)	429
thyroid function tests	80

Average Medicare Patient Data From 2012 - 2020

Information about Medicare patients treated by Dr. Gregory H. Johnson, MD.

**Gender**
Female	480
Male	424

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	7
Non-Hispanic White	828
Hispanic	29
Native American / Alaskan Native	0
Other	17

**Age**
85 and over	119
75 to 84	328
Less than 65	23
65 to 74	427

Average of Total of Conditions of Medicare patients treated by Dr. Gregory H. Johnson, MD From 2012 - 2020

The highest averages of the most common conditions of Medicare patients that Dr. Gregory H. Johnson, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	58
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	36
Depression	14
Chronic Kidney Disease	22
Asthma	9
Osteoporosis	12
Heart Failure	15
Chronic Obstructive Pulmonary Disease	10
Diabetes	21
Atrial Fibrillation	12
Dementia	7
Cancer	14

Education & Training

He has a state license in California.

Licensed In: California

Ratings & Reviews

Dr. Gregory H. Johnson, MD has a good overall rating with an average of 2.6 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. Gregory H. Johnson, MD from all over the web to help you find the right in Thousand Oaks, CA.

2.6

Overall Rating

(5 Ratings)

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General Payments

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