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Dr. Thomas G. Mason II, MD

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Specializes in: Pediatric Rheumatology and Adult Rheumatology

West Virginia University School of Medicine (1986)

Professional interests include: rheumatic diseases

200 1st Street Sw
Rochester, MN 55905

(507) 284-2511

Dr. Thomas G. Mason II, MD is a pediatric rheumatologist in Rochester, MN specializing in pediatric rheumatology and adult rheumatology. He graduated from West Virginia University School of Medicine in 1986 and has 40 years of experience. Dr. Thomas G. Mason II, MD is affiliated with Shriners Children's.

Office Locations

200 1st Street Sw
Rochester, MN 55905

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In The News

“"I m not surprised by the low immunization rate reported in this study," says Thomas Mason II, MD, Associate Professor and Chair, Pediatric Rheumatology, at the Mayo Clinic Children s Center in...”—"Obstacles to Immunization in Children with Juvenile Idiopathic Arthritis - Focus on Pediatric Rheumatology", MedPage Today, May 2017

Noteworthy Medicare Patient Procedures Performed by Dr. Thomas G. Mason II, MD in 2023

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

Top 5%

By Volume:

joint aspiration

joint injections

In 2023, Dr. Thomas G. Mason II, MD performed more joint aspiration, and joint injections procedures for Medicare patients than 95% of providers in related specialties within Minnesota.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Thomas G. Mason II, MD treated as a pediatric rheumatologist in Rochester, MN during 2012 were aspiration, injections, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas G. Mason II, MD for Medicare patients.

aspiration	82
doctor visit	155
hospital care	38
injections	82
inpatient care	38

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Thomas G. Mason II, MD treated as a pediatric rheumatologist in Rochester, MN during 2013 were aspiration, injections, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas G. Mason II, MD for Medicare patients.

aspiration	72
doctor visit	140
hospital care	12
injections	72
inpatient care	12

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas G. Mason II, MD.

**Gender**
Male	75
Female	127

**Age**
From 65 to 74	72
From 75 to 84	65
85 and over	23
Less than 65	42

Conditions of Medicare patients treated by Dr. Thomas G. Mason II, MD in 2013

Hypertension	59
High Cholesterol	43
Stroke	5
Ischemic Heart Disease	30
Depression	24
Chronic Kidney Disease	31
Asthma	0
Osteoperosis	16
Atrial Fibrilation	12
Heart Failure	21
Chronic Obstructive Pulmonary Disease	12
Diabetes	17
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Thomas G. Mason II, MD treated as a pediatric rheumatologist in Rochester, MN during 2014 were aspiration and injections.

Volume of procedures performed by Dr. Thomas G. Mason II, MD for Medicare patients.

aspiration	88
doctor visit	139
injections	88

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas G. Mason II, MD.

**Gender**
Male	82
Female	129

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

**Age**
From 65 to 74	86
From 75 to 84	70
85 and over	17
Less than 65	38

Conditions of Medicare patients treated by Dr. Thomas G. Mason II, MD in 2014

Hypertension	60
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	34
Depression	22
Chronic Kidney Disease	28
Asthma	5
Osteoperosis	14
Atrial Fibrilation	14
Heart Failure	16
Chronic Obstructive Pulmonary Disease	12
Diabetes	23
Dementia	0
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Thomas G. Mason II, MD treated as a pediatric rheumatologist in Rochester, MN during 2015 were aspiration, injections, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas G. Mason II, MD for Medicare patients.

aspiration	76
doctor visit	140
hospital care	11
injections	76
inpatient care	11

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas G. Mason II, MD.

**Gender**
Male	176
Female	254

**Age**
From 65 to 74	198
From 75 to 84	120
85 and over	34
Less than 65	78

Conditions of Medicare patients treated by Dr. Thomas G. Mason II, MD in 2015

Hypertension	54
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	37
Depression	27
Chronic Kidney Disease	27
Asthma	7
Osteoperosis	15
Atrial Fibrilation	11
Heart Failure	18
Chronic Obstructive Pulmonary Disease	10
Diabetes	23
Dementia	0
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Thomas G. Mason II, MD treated as a pediatric rheumatologist in Rochester, MN during 2016 were aspiration, injections, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas G. Mason II, MD for Medicare patients.

aspiration	52
doctor visit	112
hospital care	23
injections	52
inpatient care	23

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas G. Mason II, MD.

**Gender**
Male	66
Female	93

**Ethnicity**
Non-Hispanic White	148
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	75
From 75 to 84	42
85 and over	13
Less than 65	29

Conditions of Medicare patients treated by Dr. Thomas G. Mason II, MD in 2016

Hypertension	51
High Cholesterol	40
Stroke	0
Ischemic Heart Disease	26
Depression	25
Chronic Kidney Disease	27
Asthma	16
Osteoperosis	13
Atrial Fibrilation	13
Heart Failure	13
Chronic Obstructive Pulmonary Disease	13
Diabetes	20
Dementia	0
Cancer	7

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Thomas G. Mason II, MD treated as a pediatric rheumatologist in Rochester, MN during 2017 were aspiration and injections.

Volume of procedures performed by Dr. Thomas G. Mason II, MD for Medicare patients.

aspiration	51
doctor visit	127
injections	51

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas G. Mason II, MD.

**Gender**
Male	67
Female	91

**Ethnicity**
Non-Hispanic White	140
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	70
From 75 to 84	38
85 and over	17
Less than 65	33

Conditions of Medicare patients treated by Dr. Thomas G. Mason II, MD in 2017

Hypertension	54
High Cholesterol	31
Stroke	0
Ischemic Heart Disease	26
Depression	21
Chronic Kidney Disease	27
Asthma	8
Osteoperosis	12
Atrial Fibrilation	10
Heart Failure	16
Chronic Obstructive Pulmonary Disease	11
Diabetes	19
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Thomas G. Mason II, MD treated as a pediatric rheumatologist in Rochester, MN during 2018 were aspiration and injections.

Volume of procedures performed by Dr. Thomas G. Mason II, MD for Medicare patients.

aspiration	41
doctor visit	107
injections	41

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas G. Mason II, MD.

**Gender**
Male	60
Female	102

**Ethnicity**
Non-Hispanic White	151
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	73
From 75 to 84	38
85 and over	19
Less than 65	32

Conditions of Medicare patients treated by Dr. Thomas G. Mason II, MD in 2018

Hypertension	56
High Cholesterol	40
Stroke	7
Ischemic Heart Disease	33
Depression	30
Chronic Kidney Disease	31
Asthma	10
Osteoperosis	12
Atrial Fibrilation	9
Heart Failure	19
Chronic Obstructive Pulmonary Disease	14
Diabetes	21
Dementia	11
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Thomas G. Mason II, MD treated as a pediatric rheumatologist in Rochester, MN during 2019 were aspiration, injections, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas G. Mason II, MD for Medicare patients.

aspiration	66
doctor visit	197
hospital care	15
injections	66
inpatient care	15

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas G. Mason II, MD.

**Gender**
Male	85
Female	142

**Ethnicity**
Non-Hispanic White	214
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	116
From 75 to 84	60
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Thomas G. Mason II, MD in 2019

Hypertension	55
High Cholesterol	46
Stroke	7
Ischemic Heart Disease	33
Depression	30
Chronic Kidney Disease	33
Asthma	8
Osteoperosis	15
Atrial Fibrilation	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	16
Diabetes	21
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Thomas G. Mason II, MD treated as a pediatric rheumatologist in Rochester, MN during 2020 were aspiration, injections, hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas G. Mason II, MD for Medicare patients.

aspiration	67
doctor visit	166
hospital care	13
injections	67
inpatient care	13

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas G. Mason II, MD.

**Gender**
Male	79
Female	142

**Age**
From 65 to 74	109
From 75 to 84	60
85 and over	14
Less than 65	38

Conditions of Medicare patients treated by Dr. Thomas G. Mason II, MD in 2020

Hypertension	54
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	28
Depression	24
Chronic Kidney Disease	33
Asthma	6
Osteoperosis	21
Atrial Fibrilation	11
Heart Failure	18
Chronic Obstructive Pulmonary Disease	9
Diabetes	24
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Thomas G. Mason II, MD treated as a pediatric rheumatologist in Rochester, MN during 2021 were aspiration and injections.

Volume of procedures performed by Dr. Thomas G. Mason II, MD for Medicare patients.

aspiration	81
doctor visit	195
injections	81

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas G. Mason II, MD.

**Gender**
Male	81
Female	144

**Ethnicity**
Non-Hispanic White	204
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	116
From 75 to 84	64
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Thomas G. Mason II, MD in 2021

Hypertension	56
High Cholesterol	47
Stroke	5
Ischemic Heart Disease	32
Depression	25
Chronic Kidney Disease	30
Asthma	9
Osteoperosis	18
Atrial Fibrilation	12
Heart Failure	19
Chronic Obstructive Pulmonary Disease	11
Diabetes	22
Dementia	8
Cancer	8

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Thomas G. Mason II, MD treated as a pediatric rheumatologist in Rochester, MN during 2022 were aspiration and injections.

Volume of procedures performed by Dr. Thomas G. Mason II, MD for Medicare patients.

aspiration	91
doctor visit	174
injections	91

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas G. Mason II, MD.

**Gender**
Male	100
Female	141

**Ethnicity**
Non-Hispanic White	229
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	119
From 75 to 84	76
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Thomas G. Mason II, MD in 2022

Hypertension	66
High Cholesterol	63
Stroke	7
Ischemic Heart Disease	28
Depression	26
Chronic Kidney Disease	24
Asthma	11
Osteoperosis	26
Atrial Fibrilation	17
Heart Failure	15
Chronic Obstructive Pulmonary Disease	10
Diabetes	23
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Thomas G. Mason II, MD for Medicare patients.

The highest averages for the top procedures that Dr. Thomas G. Mason II, MD treated as a pediatric rheumatologist in Rochester, MN were aspiration, injections, hospital care and inpatient care.

aspiration	69
doctor visit	150
hospital care	18
injections	69
inpatient care	18

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Thomas G. Mason II, MD.

**Gender**
Male	79
Female	124

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	116
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	57
85 and over	12
Less than 65	26
65 to 74	94

Average of Total of Conditions of Medicare patients treated by Dr. Thomas G. Mason II, MD From 2012 - 2022

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

Hypertension	51
High Cholesterol	39
Stroke	2
Ischemic Heart Disease	27
Depression	23
Chronic Kidney Disease	26
Asthma	7
Osteoporosis	14
Heart Failure	15
Chronic Obstructive Pulmonary Disease	10
Diabetes	19
Atrial Fibrillation	10
Dementia	2
Cancer	7

Education & Training

Dr. Thomas G. Mason II, MD graduated from West Virginia University School of Medicine in 1986. He completed residency at West Virginia University Affiliated Hospitals. He has a state license in Minnesota.

Medical School: West Virginia University School of Medicine (1986)

Residency: West Virginia University Affiliated Hospitals (1990)

Licensed In: Minnesota

Affiliations & Hospitals

Dr. Thomas G. Mason II, MD is associated with these hospitals and organizations:

Shriners Children's

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Research Payments

Dr. Thomas G. Mason II, MD has received 3 research payments totaling $6,541.

Biography

Dr. Thomas Mason, who practices in Rochester, MN, is a medical specialist in pediatric rheumatology and adult rheumatology. Areas of expertise for Dr. Mason include rheumatic diseases. His hospital/clinic affiliations include Shriners Children's and Mayo Clinic. He obtained his medical school training at West Virginia University School of Medicine and performed his residency at a hospital affiliated with West Virginia University.