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Dr. Gary Thomas Underhill, MD

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Specializes in: Emergency Medicine

1012 S 3rd Street
Dayton, WA 99328

(509) 382-2531

Dr. Gary Thomas Underhill, MD is an emergency medicine doctor in Dayton, WA specializing in emergency medicine.

Office Locations

1012 S 3rd Street
Dayton, WA 99328

(509) 382-2531

(509) 382-3205

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Noteworthy Medicare Patient Procedures Performed by Dr. Gary Thomas Underhill, MD in 2023

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

Top 10%

By Affordability:

hospital care

inpatient care

inpatient hospital care

In 2023, Dr. Gary Thomas Underhill, MD had a list price for hospital care, inpatient care, and inpatient hospital care (for patient admitted to hospital) that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Washington. 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 Thomas Underhill, MD treated as an emergency medicine doctor in Dayton, WA during 2012 were emergency care.

Volume of procedures performed by Dr. Gary Thomas Underhill, MD for Medicare patients.

emergency care	839

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gary Thomas Underhill, MD treated as an emergency medicine doctor in Dayton, WA during 2013 were emergency care.

Volume of procedures performed by Dr. Gary Thomas Underhill, MD for Medicare patients.

emergency care	787

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary Thomas Underhill, MD.

**Gender**
Male	227
Female	383

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

**Age**
From 65 to 74	156
From 75 to 84	173
85 and over	182
Less than 65	99

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2013

Hypertension	65
High Cholesterol	53
Stroke	10
Ischemic Heart Disease	43
Depression	31
Chronic Kidney Disease	28
Asthma	13
Osteoperosis	10
Atrial Fibrilation	18
Heart Failure	30
Chronic Obstructive Pulmonary Disease	20
Diabetes	30
Dementia	23
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gary Thomas Underhill, MD treated as an emergency medicine doctor in Dayton, WA during 2014 were emergency care.

Volume of procedures performed by Dr. Gary Thomas Underhill, MD for Medicare patients.

emergency care	716

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary Thomas Underhill, MD.

**Gender**
Male	212
Female	354

**Ethnicity**
Non-Hispanic White	522
Black	0
Hispanic	33
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	150
From 75 to 84	155
85 and over	156
Less than 65	105

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2014

Hypertension	68
High Cholesterol	48
Stroke	9
Ischemic Heart Disease	40
Depression	35
Chronic Kidney Disease	25
Asthma	10
Osteoperosis	8
Atrial Fibrilation	17
Heart Failure	24
Chronic Obstructive Pulmonary Disease	21
Diabetes	31
Dementia	23
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gary Thomas Underhill, MD treated as an emergency medicine doctor in Dayton, WA during 2015 were emergency care.

Volume of procedures performed by Dr. Gary Thomas Underhill, MD for Medicare patients.

emergency care	854

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary Thomas Underhill, MD.

**Gender**
Male	534
Female	756

**Ethnicity**
Non-Hispanic White	1140
Black	0
Hispanic	96
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	328
From 75 to 84	334
85 and over	356
Less than 65	272

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2015

Hypertension	67
High Cholesterol	48
Stroke	9
Ischemic Heart Disease	42
Depression	36
Chronic Kidney Disease	28
Asthma	17
Osteoperosis	8
Atrial Fibrilation	19
Heart Failure	29
Chronic Obstructive Pulmonary Disease	18
Diabetes	35
Dementia	19
Cancer	8

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gary Thomas Underhill, MD treated as an emergency medicine doctor in Dayton, WA during 2016 were emergency care and nosebleed treatment.

Volume of procedures performed by Dr. Gary Thomas Underhill, MD for Medicare patients.

emergency care	1041
nosebleed treatment	12

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary Thomas Underhill, MD.

**Gender**
Male	326
Female	455

**Ethnicity**
Non-Hispanic White	695
Black	0
Hispanic	62
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	192
From 75 to 84	226
85 and over	209
Less than 65	154

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2016

Hypertension	68
High Cholesterol	53
Stroke	9
Ischemic Heart Disease	39
Depression	35
Chronic Kidney Disease	31
Asthma	25
Osteoperosis	11
Atrial Fibrilation	19
Heart Failure	26
Chronic Obstructive Pulmonary Disease	22
Diabetes	31
Dementia	23
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gary Thomas Underhill, MD treated as an emergency medicine doctor in Dayton, WA during 2017 were emergency care.

Volume of procedures performed by Dr. Gary Thomas Underhill, MD for Medicare patients.

emergency care	484

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary Thomas Underhill, MD.

**Gender**
Male	170
Female	234

**Ethnicity**
Non-Hispanic White	354
Black	0
Hispanic	37
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	105
From 75 to 84	110
85 and over	119
Less than 65	70

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2017

Hypertension	68
High Cholesterol	46
Stroke	9
Ischemic Heart Disease	39
Depression	33
Chronic Kidney Disease	35
Asthma	10
Osteoperosis	8
Atrial Fibrilation	18
Heart Failure	26
Chronic Obstructive Pulmonary Disease	21
Diabetes	32
Dementia	24
Cancer	8

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gary Thomas Underhill, MD treated as an emergency medicine doctor in Dayton, WA during 2018 were emergency care.

Volume of procedures performed by Dr. Gary Thomas Underhill, MD for Medicare patients.

emergency care	388

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary Thomas Underhill, MD.

**Gender**
Male	166
Female	226

**Ethnicity**
Non-Hispanic White	305
Black	0
Hispanic	53
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	109
From 75 to 84	100
85 and over	78
Less than 65	105

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2018

Hypertension	75
High Cholesterol	65
Stroke	12
Ischemic Heart Disease	40
Depression	39
Chronic Kidney Disease	52
Asthma	14
Osteoperosis	9
Atrial Fibrilation	18
Heart Failure	34
Chronic Obstructive Pulmonary Disease	32
Diabetes	44
Dementia	26
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gary Thomas Underhill, MD treated as an emergency medicine doctor in Dayton, WA during 2019 were emergency care, hospital care and inpatient care.

Volume of procedures performed by Dr. Gary Thomas Underhill, MD for Medicare patients.

emergency care	773
hospital care	20
inpatient care	20

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary Thomas Underhill, MD.

**Gender**
Male	310
Female	434

**Ethnicity**
Non-Hispanic White	638
Black	12
Hispanic	66
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	222
From 75 to 84	205
85 and over	171
Less than 65	146

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2019

Hypertension	75
High Cholesterol	57
Stroke	11
Ischemic Heart Disease	41
Depression	38
Chronic Kidney Disease	52
Asthma	10
Osteoperosis	10
Atrial Fibrilation	16
Heart Failure	32
Chronic Obstructive Pulmonary Disease	28
Diabetes	44
Dementia	29
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gary Thomas Underhill, MD treated as an emergency medicine doctor in Dayton, WA during 2020 were emergency care and tracheal (windpipe) procedures.

Volume of procedures performed by Dr. Gary Thomas Underhill, MD for Medicare patients.

emergency care	635
tracheal (windpipe) procedures	11

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary Thomas Underhill, MD.

**Gender**
Male	252
Female	352

**Ethnicity**
Non-Hispanic White	519
Black	0
Hispanic	55
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	188
From 75 to 84	177
85 and over	154
Less than 65	85

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2020

Hypertension	75
High Cholesterol	59
Stroke	11
Ischemic Heart Disease	43
Depression	31
Chronic Kidney Disease	61
Asthma	10
Osteoperosis	7
Atrial Fibrilation	17
Heart Failure	36
Chronic Obstructive Pulmonary Disease	29
Diabetes	44
Dementia	31
Cancer	14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gary Thomas Underhill, MD treated as an emergency medicine doctor in Dayton, WA during 2021 were emergency care.

Volume of procedures performed by Dr. Gary Thomas Underhill, MD for Medicare patients.

emergency care	585

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary Thomas Underhill, MD.

**Gender**
Male	260
Female	312

**Ethnicity**
Non-Hispanic White	491
Black	0
Hispanic	53
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	170
From 75 to 84	182
85 and over	140
Less than 65	80

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2021

Hypertension	75
High Cholesterol	61
Stroke	12
Ischemic Heart Disease	38
Depression	33
Chronic Kidney Disease	56
Asthma	11
Osteoperosis	10
Atrial Fibrilation	16
Heart Failure	32
Chronic Obstructive Pulmonary Disease	26
Diabetes	42
Dementia	32
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gary Thomas Underhill, MD treated as an emergency medicine doctor in Dayton, WA during 2022 were emergency care, hospital care and inpatient care.

Volume of procedures performed by Dr. Gary Thomas Underhill, MD for Medicare patients.

emergency care	375
hospital care	30
inpatient care	30

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gary Thomas Underhill, MD.

**Gender**
Male	186
Female	220

**Ethnicity**
Non-Hispanic White	349
Black	0
Hispanic	37
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	115
From 75 to 84	142
85 and over	105
Less than 65	44

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2022

Hypertension	75
High Cholesterol	69
Stroke	19
Ischemic Heart Disease	36
Depression	34
Chronic Kidney Disease	41
Asthma	16
Osteoperosis	18
Atrial Fibrilation	32
Heart Failure	30
Chronic Obstructive Pulmonary Disease	31
Diabetes	41
Dementia	25
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Gary Thomas Underhill, MD for Medicare patients.

The highest averages for the top procedures that Dr. Gary Thomas Underhill, MD treated as an emergency medicine doctor in Dayton, WA were emergency care, hospital care, inpatient care and nosebleed treatment.

emergency care	679
hospital care	25
inpatient care	25
nosebleed treatment	12
tracheal (windpipe) procedures	11

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Gary Thomas Underhill, MD.

**Gender**
Female	338
Male	240

**Ethnicity**
Black / African American	1
Asian / Pacific Islander	0
Non-Hispanic White	505
Native American / Alaskan Native	0
Hispanic	49
Other	1

**Age**
85 and over	151
75 to 84	164
Less than 65	105
65 to 74	157

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

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

Hypertension	64
High Cholesterol	50
Stroke	10
Ischemic Heart Disease	36
Depression	31
Chronic Kidney Disease	37
Asthma	12
Osteoporosis	9
Heart Failure	27
Chronic Obstructive Pulmonary Disease	22
Diabetes	34
Atrial Fibrillation	17
Dementia	23
Cancer	10

Education & Training

He has a state license in Washington.

Licensed In: Washington

Ratings & Reviews

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General Payments

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

**Payments by Company**
Astellas Pharma US Inc	$84 $84

**Types of Payments**
Education	$84

Biography

Dr. Gary Underhill practices family medicine and emergency medicine. He studied medicine at Loma Linda University School of Medicine.

Select Year:

Dr. Gary Thomas Underhill, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Gary Thomas Underhill, 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 Thomas Underhill, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gary Thomas Underhill, 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 Thomas Underhill, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

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