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Dr. Mark A. Mason, MD

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Specializes in: Family Medicine and Emergency Medicine

University of Michigan Medical School (1985)

1201 South Grand Boulevard
Saint Louis, MO 63104

(314) 617-3750

Dr. Mark A. Mason, MD is a family medicine practitioner in Saint Louis, MO specializing in family medicine and emergency medicine. He graduated from University of Michigan Medical School in 1985 and has 41 years of experience. Dr. Mark A. Mason, MD is affiliated with SSM Health.

Office Locations

1201 South Grand Boulevard
Saint Louis, MO 63104

(314) 617-3750

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525 Couch Avenue
Kirkwood, MO 63122

(314) 966-1500

(314) 966-1681

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Noteworthy Medicare Patient Procedures Performed by Dr. Mark A. Mason, MD in 2024

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

Top 5%

By Affordability:

emergency care

emergency room care

In 2024, Dr. Mark A. Mason, MD had a list price for emergency care, and emergency room (ER) care 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. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO during 2012 were emergency care.

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

emergency care	505

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO during 2013 were emergency care.

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

emergency care	642

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark A. Mason, MD.

**Gender**
Male	271
Female	378

**Ethnicity**
Non-Hispanic White	582
Black	54
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	191
From 75 to 84	188
85 and over	93
Less than 65	177

Conditions of Medicare patients treated by Dr. Mark A. Mason, MD in 2013

Hypertension	75
High Cholesterol	63
Stroke	12
Ischemic Heart Disease	46
Depression	45
Chronic Kidney Disease	39
Asthma	14
Osteoperosis	12
Atrial Fibrilation	19
Heart Failure	35
Chronic Obstructive Pulmonary Disease	34
Diabetes	42
Dementia	36
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO during 2014 were emergency care.

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

emergency care	533

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark A. Mason, MD.

**Gender**
Male	233
Female	314

**Ethnicity**
Non-Hispanic White	456
Black	75
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	136
From 75 to 84	133
85 and over	117
Less than 65	161

Conditions of Medicare patients treated by Dr. Mark A. Mason, MD in 2014

Hypertension	75
High Cholesterol	61
Stroke	14
Ischemic Heart Disease	49
Depression	45
Chronic Kidney Disease	44
Asthma	14
Osteoperosis	13
Atrial Fibrilation	19
Heart Failure	35
Chronic Obstructive Pulmonary Disease	32
Diabetes	39
Dementia	35
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO during 2015 were emergency care.

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

emergency care	417

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark A. Mason, MD.

**Gender**
Male	392
Female	482

**Ethnicity**
Non-Hispanic White	612
Black	226
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	200
From 75 to 84	212
85 and over	176
Less than 65	286

Conditions of Medicare patients treated by Dr. Mark A. Mason, MD in 2015

Hypertension	75
High Cholesterol	65
Stroke	15
Ischemic Heart Disease	57
Depression	45
Chronic Kidney Disease	46
Asthma	24
Osteoperosis	8
Atrial Fibrilation	19
Heart Failure	41
Chronic Obstructive Pulmonary Disease	30
Diabetes	43
Dementia	24
Cancer	15

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO during 2016 were emergency care.

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

emergency care	558

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark A. Mason, MD.

**Gender**
Male	246
Female	357

**Ethnicity**
Non-Hispanic White	485
Black	102
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	156
From 75 to 84	165
85 and over	124
Less than 65	158

Conditions of Medicare patients treated by Dr. Mark A. Mason, MD in 2016

Hypertension	75
High Cholesterol	66
Stroke	14
Ischemic Heart Disease	56
Depression	48
Chronic Kidney Disease	51
Asthma	37
Osteoperosis	12
Atrial Fibrilation	21
Heart Failure	45
Chronic Obstructive Pulmonary Disease	36
Diabetes	45
Dementia	29
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO during 2017 were emergency care.

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

emergency care	461

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark A. Mason, MD.

**Gender**
Male	215
Female	273

**Ethnicity**
Non-Hispanic White	355
Black	122
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	141
From 75 to 84	124
85 and over	92
Less than 65	131

Conditions of Medicare patients treated by Dr. Mark A. Mason, MD in 2017

Hypertension	75
High Cholesterol	63
Stroke	12
Ischemic Heart Disease	56
Depression	48
Chronic Kidney Disease	55
Asthma	13
Osteoperosis	8
Atrial Fibrilation	18
Heart Failure	40
Chronic Obstructive Pulmonary Disease	30
Diabetes	43
Dementia	28
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO during 2018 were emergency care.

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

emergency care	407

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark A. Mason, MD.

**Gender**
Male	211
Female	234

**Ethnicity**
Non-Hispanic White	346
Black	83
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	144
From 75 to 84	134
85 and over	70
Less than 65	97

Conditions of Medicare patients treated by Dr. Mark A. Mason, MD in 2018

Hypertension	75
High Cholesterol	68
Stroke	19
Ischemic Heart Disease	54
Depression	48
Chronic Kidney Disease	56
Asthma	10
Osteoperosis	13
Atrial Fibrilation	21
Heart Failure	46
Chronic Obstructive Pulmonary Disease	31
Diabetes	44
Dementia	31
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO during 2019 were emergency care.

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

emergency care	477

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark A. Mason, MD.

**Gender**
Male	231
Female	293

**Ethnicity**
Non-Hispanic White	423
Black	75
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	158
From 75 to 84	138
85 and over	115
Less than 65	113

Conditions of Medicare patients treated by Dr. Mark A. Mason, MD in 2019

Hypertension	75
High Cholesterol	67
Stroke	14
Ischemic Heart Disease	51
Depression	47
Chronic Kidney Disease	53
Asthma	9
Osteoperosis	12
Atrial Fibrilation	22
Heart Failure	40
Chronic Obstructive Pulmonary Disease	31
Diabetes	44
Dementia	32
Cancer	14

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO during 2020 were emergency care.

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

emergency care	261

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark A. Mason, MD.

**Gender**
Male	134
Female	174

**Ethnicity**
Non-Hispanic White	198
Black	92
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	71
85 and over	54
Less than 65	93

Conditions of Medicare patients treated by Dr. Mark A. Mason, MD in 2020

Hypertension	75
High Cholesterol	64
Stroke	15
Ischemic Heart Disease	55
Depression	40
Chronic Kidney Disease	57
Asthma	11
Osteoperosis	9
Atrial Fibrilation	20
Heart Failure	43
Chronic Obstructive Pulmonary Disease	30
Diabetes	46
Dementia	32
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO during 2021 were emergency care.

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

emergency care	338

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark A. Mason, MD.

**Gender**
Male	205
Female	192

**Ethnicity**
Non-Hispanic White	307
Black	77
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	117
From 75 to 84	111
85 and over	84
Less than 65	85

Conditions of Medicare patients treated by Dr. Mark A. Mason, MD in 2021

Hypertension	75
High Cholesterol	70
Stroke	16
Ischemic Heart Disease	50
Depression	40
Chronic Kidney Disease	62
Asthma	8
Osteoperosis	12
Atrial Fibrilation	22
Heart Failure	43
Chronic Obstructive Pulmonary Disease	30
Diabetes	47
Dementia	36
Cancer	12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO during 2022 were emergency care.

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

emergency care	193

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark A. Mason, MD.

**Gender**
Male	133
Female	111

**Ethnicity**
Non-Hispanic White	153
Black	80
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	74
From 75 to 84	74
85 and over	41
Less than 65	55

Conditions of Medicare patients treated by Dr. Mark A. Mason, MD in 2022

Hypertension	75
High Cholesterol	71
Stroke	27
Ischemic Heart Disease	42
Depression	39
Chronic Kidney Disease	47
Asthma	11
Osteoperosis	11
Atrial Fibrilation	32
Heart Failure	41
Chronic Obstructive Pulmonary Disease	31
Diabetes	45
Dementia	32
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO during 2023 were emergency care.

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

emergency care	197

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark A. Mason, MD.

**Gender**
Male	107
Female	125

**Ethnicity**
Non-Hispanic White	178
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	66
From 75 to 84	64
85 and over	48
Less than 65	54

Conditions of Medicare patients treated by Dr. Mark A. Mason, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	28
Ischemic Heart Disease	46
Depression	41
Chronic Kidney Disease	38
Asthma	13
Osteoperosis	18
Atrial Fibrilation	30
Heart Failure	39
Chronic Obstructive Pulmonary Disease	39
Diabetes	42
Dementia	28
Cancer	19

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO during 2024 were emergency care.

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

emergency care	103

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark A. Mason, MD.

**Gender**
Male	54
Female	60

**Ethnicity**
Non-Hispanic White	94
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	42
From 75 to 84	40
85 and over	15
Less than 65	17

Conditions of Medicare patients treated by Dr. Mark A. Mason, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	19
Ischemic Heart Disease	44
Depression	46
Chronic Kidney Disease	39
Asthma	15
Osteoperosis	18
Atrial Fibrilation	35
Heart Failure	36
Chronic Obstructive Pulmonary Disease	30
Diabetes	35
Dementia	15
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Mark A. Mason, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mark A. Mason, MD treated as a family medicine practitioner in Saint Louis, MO were emergency care.

emergency care	391

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Mark A. Mason, MD.

**Gender**
Male	187
Female	230

**Ethnicity**
Black / African American	75
Asian / Pacific Islander	0
Non-Hispanic White	322
Native American / Alaskan Native	0
Hispanic	1
Other	0

**Age**
75 to 84	111
85 and over	79
Less than 65	109
65 to 74	116

Average of Total of Conditions of Medicare patients treated by Dr. Mark A. Mason, MD From 2012 - 2024

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

Hypertension	69
High Cholesterol	62
Stroke	15
Ischemic Heart Disease	46
Depression	40
Chronic Kidney Disease	45
Asthma	13
Osteoporosis	11
Heart Failure	37
Chronic Obstructive Pulmonary Disease	29
Diabetes	39
Atrial Fibrillation	21
Dementia	27
Cancer	13

Education & Training

Dr. Mark A. Mason, MD graduated from University of Michigan Medical School in 1985. He completed residency at Harbor-UCLA Medical Center. He is certified by the American Board of Family Medicine Missouri State Board of Registration and has a state license in Missouri.

Medical School: University of Michigan Medical School (1985)

Residency: Harbor-UCLA Medical Center (1988)

Board Certification: American Board of Family Medicine Missouri State Board of Registration

Licensed In: Missouri

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General Payments

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

**Payments by Company**
Intuitive Surgical, Inc.	$1,857 Da Vinci Surgical System $1,857
Janssen Pharmaceuticals, Inc	$154 XARELTO $154
Boehringer Ingelheim Pharmaceuticals, Inc.	$125 Pradaxa $125
Grifols USA, LLC	$17 Prolastin-C $17
Allergan, Inc.	$11 TEFLARO $11
Other	$10 RAPIVAB $10

**Types of Payments**
Travel and Lodging	$1,857
Food and Beverage	$318

Biography

Dr. Mark Mason is a physician who specializes in emergency medicine. He attended the University of Michigan Medical School and subsequently trained at Harbor-UCLA Medical Center and Ventura County Medical Center for residency. He is professionally affiliated with SSM Health.