Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > OK Providers > Emergency Physicians

Dr. John Thomas Gregg, MD

(No ratings)

Specializes in: Emergency Medicine and Surgery

8800 Tall Oaks Drive
Guthrie, OK 73044

(806) 348-1468

Dr. John Thomas Gregg, MD is an emergency medicine doctor in Guthrie, OK specializing in emergency medicine and surgery.

Office Locations

8800 Tall Oaks Drive
Guthrie, OK 73044

(806) 348-1468

open_in_new

Perry Memorial Hospital
Perry, OK 73077

(806) 346-1468

open_in_new

Share Medical Center
Alva, OK 73717

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. John Thomas Gregg, MD in 2024

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

Top 25%

By Volume:

emergency room care

In 2012, Dr. John Thomas Gregg, MD performed more emergency room (ER) care procedures for Medicare patients than 75% of providers in related specialties within Oklahoma.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John Thomas Gregg, MD treated as an emergency medicine doctor in Guthrie, OK during 2012 were minimally invasive procedures, gastrointestinal procedures and preventive care.

Volume of procedures performed by Dr. John Thomas Gregg, MD for Medicare patients.

gastrointestinal procedures	31
minimally invasive procedures	31
preventive care	12

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Thomas Gregg, MD treated as an emergency medicine doctor in Guthrie, OK during 2013 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. John Thomas Gregg, MD for Medicare patients.

diagnostic procedures	12
gastrointestinal procedures	12
minimally invasive procedures	12
removal of lesion (e.g. growth)	12

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Thomas Gregg, MD.

**Gender**
Male	30
Female	39

**Ethnicity**
Non-Hispanic White	40
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	34
From 75 to 84	14
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2013

Hypertension	71
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	41
Depression	0
Chronic Kidney Disease	22
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	17
Chronic Obstructive Pulmonary Disease	0
Diabetes	39
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Thomas Gregg, MD.

**Gender**
Male	28
Female	26

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

**Age**
From 65 to 74	24
From 75 to 84	14
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2014

Hypertension	67
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	30
Depression	0
Chronic Kidney Disease	20
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	22
Chronic Obstructive Pulmonary Disease	0
Diabetes	39
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Thomas Gregg, MD.

**Gender**
Male	50
Female	70

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

**Age**
From 65 to 74	58
From 75 to 84	34
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2015

Hypertension	63
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	38
Depression	0
Chronic Kidney Disease	23
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	27
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Thomas Gregg, MD treated as an emergency medicine doctor in Guthrie, OK during 2016 were minimally invasive procedures, gastrointestinal procedures and preventive care.

Volume of procedures performed by Dr. John Thomas Gregg, MD for Medicare patients.

gastrointestinal procedures	32
minimally invasive procedures	32
preventive care	17

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Thomas Gregg, MD.

**Gender**
Male	31
Female	39

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

**Age**
From 65 to 74	36
From 75 to 84	13
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2016

Hypertension	69
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	36
Depression	0
Chronic Kidney Disease	30
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	20
Chronic Obstructive Pulmonary Disease	0
Diabetes	40
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Thomas Gregg, MD.

**Gender**
Male	24
Female	23

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

**Age**
From 65 to 74	24
From 75 to 84	11
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2017

Hypertension	75
High Cholesterol	74
Stroke	0
Ischemic Heart Disease	34
Depression	0
Chronic Kidney Disease	26
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	23
Chronic Obstructive Pulmonary Disease	0
Diabetes	40
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Thomas Gregg, MD.

**Gender**
Male	16
Female	18

**Ethnicity**
Non-Hispanic White	14
Black	0
Hispanic	20
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	15
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2018

Hypertension	75
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	32
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	38
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Thomas Gregg, MD.

**Gender**
Male	14
Female	16

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

**Age**
From 65 to 74	15
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2019

Hypertension	57
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	40
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Thomas Gregg, MD.

**Gender**
Male	14
Female	16

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

**Age**
From 65 to 74	12
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2020

Hypertension	75
High Cholesterol	73
Stroke	0
Ischemic Heart Disease	53
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	40
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Thomas Gregg, MD treated as an emergency medicine doctor in Guthrie, OK during 2021 were emergency care.

Volume of procedures performed by Dr. John Thomas Gregg, MD for Medicare patients.

emergency care	94

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Thomas Gregg, MD.

**Gender**
Male	63
Female	77

**Ethnicity**
Non-Hispanic White	121
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	44
From 75 to 84	42
85 and over	36
Less than 65	18

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2021

Hypertension	75
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	51
Depression	29
Chronic Kidney Disease	42
Asthma	0
Osteoperosis	8
Atrial Fibrilation	20
Heart Failure	38
Chronic Obstructive Pulmonary Disease	25
Diabetes	44
Dementia	24
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Thomas Gregg, MD treated as an emergency medicine doctor in Guthrie, OK during 2022 were emergency care, hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Thomas Gregg, MD for Medicare patients.

emergency care	185
hospital care	70
inpatient care	42
outpatient care	28

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Thomas Gregg, MD.

**Gender**
Male	99
Female	128

**Ethnicity**
Non-Hispanic White	195
Black	0
Hispanic	0
Asian	0
Other	0
Native American	14

**Age**
From 65 to 74	80
From 75 to 84	61
85 and over	56
Less than 65	30

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	39
Depression	28
Chronic Kidney Disease	26
Asthma	11
Osteoperosis	10
Atrial Fibrilation	31
Heart Failure	37
Chronic Obstructive Pulmonary Disease	29
Diabetes	42
Dementia	19
Cancer	14

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John Thomas Gregg, MD treated as an emergency medicine doctor in Guthrie, OK during 2023 were emergency care, removal of lesion (e.g. growth), minimally invasive procedures and diagnostic procedures.

Volume of procedures performed by Dr. John Thomas Gregg, MD for Medicare patients.

diagnostic procedures	13
emergency care	136
gastrointestinal procedures	13
minimally invasive procedures	13
removal of lesion (e.g. growth)	13

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John Thomas Gregg, MD.

**Gender**
Male	74
Female	103

**Ethnicity**
Non-Hispanic White	158
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	62
From 75 to 84	59
85 and over	40
Less than 65	16

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	38
Depression	25
Chronic Kidney Disease	23
Asthma	9
Osteoperosis	16
Atrial Fibrilation	27
Heart Failure	28
Chronic Obstructive Pulmonary Disease	21
Diabetes	33
Dementia	15
Cancer	17

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. John Thomas Gregg, MD treated as an emergency medicine doctor in Guthrie, OK during 2024 were emergency care.

Volume of procedures performed by Dr. John Thomas Gregg, MD for Medicare patients.

emergency care	164

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. John Thomas Gregg, MD.

**Gender**
Male	78
Female	111

**Ethnicity**
Non-Hispanic White	176
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	58
From 75 to 84	67
85 and over	42
Less than 65	22

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	37
Depression	24
Chronic Kidney Disease	29
Asthma	8
Osteoperosis	14
Atrial Fibrilation	31
Heart Failure	29
Chronic Obstructive Pulmonary Disease	29
Diabetes	40
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. John Thomas Gregg, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Thomas Gregg, MD treated as an emergency medicine doctor in Guthrie, OK were emergency care, hospital care, inpatient care and outpatient care.

diagnostic procedures	12
emergency care	144
gastrointestinal procedures	22
hospital care	70
inpatient care	42
minimally invasive procedures	22
outpatient care	28
preventive care	14
removal of lesion (e.g. growth)	12

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. John Thomas Gregg, MD.

**Gender**
Male	40
Female	51

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	65
Native American / Alaskan Native	1
Hispanic	5
Other	0

**Age**
75 to 84	24
85 and over	13
Less than 65	6
65 to 74	35

Average of Total of Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD From 2012 - 2024

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

Hypertension	65
High Cholesterol	56
Stroke	2
Ischemic Heart Disease	30
Depression	8
Chronic Kidney Disease	21
Asthma	2
Osteoporosis	3
Heart Failure	16
Chronic Obstructive Pulmonary Disease	8
Diabetes	35
Atrial Fibrillation	8
Dementia	5
Cancer	4

Education & Training

He has a state license in Oklahoma.

Licensed In: Oklahoma

Ratings & Reviews

Dr. John Thomas Gregg, MD does not have any reviews yet, be the first to leave a review of Dr. John Thomas Gregg, MD here: Leave a Review

(No ratings)

Leave a Review

General Payments

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

**Payments by Company**
Vertex Pharmaceuticals Incorporated	$28 JOURNAVX $28
Edwards Lifesciences Corporation	$21 Transcatheter Heart Valves $21
DePuy Synthes Sales Inc.	$16 FMS $16
Oxford Immunotec Inc.	$16 TSPOT TB TEST $16
GlaxoSmithKline, LLC.	$12 ANORO $12
Other	$10 Contrave $10

**Types of Payments**
Food and Beverage	$103

Biography

Dr. John Gregg is a general surgery specialist in Alva, OK, Guthrie, OK, and Perry, OK. Dr. Gregg has obtained a license to practice in Oklahoma.

Select Year:

Dr. John Thomas Gregg, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. John Thomas Gregg, MD in 2024

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. John Thomas Gregg, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2023

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

2024 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD in 2024

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Average Medicare Patient Data From 2012 - 2024

Average of Total of Conditions of Medicare patients treated by Dr. John Thomas Gregg, MD From 2012 - 2024

Education & Training

Ratings & Reviews

General Payments

Biography

Emergency Physicians in Nearby Locations

Other Providers in Guthrie, OK