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Dr. Mary Antionette Fitzsimons, MD

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Specializes in: Emergency Medicine
Northwestern University, Feinberg School of Medicine
3901 Lone Tree Way
Antioch, CA 94509

Dr. Mary Antionette Fitzsimons, MD is an emergency medicine doctor in Antioch, CA specializing in emergency medicine. She graduated from Northwestern University, Feinberg School of Medicine. Dr. Mary Antionette Fitzsimons, MD is affiliated with Sutter Health.

View Doctor's Full Profile (925) 779-7273

Office Locations

3901 Lone Tree Way
Antioch, CA 94509
(925) 779-7273
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In The News (see more mentions in the news)

“"I thought it would be much clunkier, and the lighter you are with the controls, the easier it worked," said Mary Fitzsimons, an emergency room doctor from Walnut Creek, California, who spent...”—"Adult sandbox in Las Vegas isn't for Tonka trucks", NBC News, September 2011
“"I thought it would be much clunkier, and the lighter you are with the controls, the easier it worked,"said Mary Fitzsimons, an emergency room doctor from Walnut Creek, Calif., who spent roughly...”—"Adults get life-sized sandbox near Las Vegas Strip", Desert News, September 2011
“"I thought it would be much clunkier, and the lighter you are with the controls, the easier it worked," said Mary Fitzsimons, an emergency room doctor from Walnut Creek, Calif., who spent about two...”—"What happens in Vegas ...: Adults play construction worker in life-sized sandbox", The Daily Reporter, September 2011

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA during 2012 were emergency care, X-rays, thoracic (chest) imaging and catheterization.

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

catheterization 21
emergency care 663
thoracic (chest) imaging 114
tracheal (windpipe) procedures 12
X-rays 114

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA during 2013 were emergency care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

emergency care 612
thoracic (chest) imaging 103
X-rays 103

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD.

Gender
Male 240
Female 375
Ethnicity
Non-Hispanic White 346
Black 106
Hispanic 114
Asian 0
Other 0
Native American 0
Age
From 65 to 74 178
From 75 to 84 152
85 and over 110
Less than 65 175

Conditions of Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD in 2013

Hypertension 75
High Cholesterol 55
Stroke 13
Ischemic Heart Disease 46
Depression 34
Chronic Kidney Disease 43
Asthma 21
Osteoperosis 10
Atrial Fibrilation 13
Heart Failure 35
Chronic Obstructive Pulmonary Disease 31
Diabetes 45
Dementia 23
Cancer 10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA during 2014 were emergency care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

emergency care 618
thoracic (chest) imaging 132
X-rays 132

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD.

Gender
Male 236
Female 382
Ethnicity
Non-Hispanic White 346
Black 116
Hispanic 111
Asian 34
Other 0
Native American 0
Age
From 65 to 74 185
From 75 to 84 124
85 and over 125
Less than 65 184

Conditions of Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD in 2014

Hypertension 75
High Cholesterol 61
Stroke 12
Ischemic Heart Disease 43
Depression 38
Chronic Kidney Disease 45
Asthma 21
Osteoperosis 8
Atrial Fibrilation 21
Heart Failure 40
Chronic Obstructive Pulmonary Disease 32
Diabetes 41
Dementia 23
Cancer 12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA during 2015 were emergency care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

emergency care 657
thoracic (chest) imaging 87
X-rays 87

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD.

Gender
Male 530
Female 790
Ethnicity
Non-Hispanic White 670
Black 262
Hispanic 284
Asian 78
Other 0
Native American 0
Age
From 65 to 74 390
From 75 to 84 314
85 and over 240
Less than 65 376

Conditions of Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD in 2015

Hypertension 75
High Cholesterol 58
Stroke 12
Ischemic Heart Disease 42
Depression 30
Chronic Kidney Disease 50
Asthma 30
Osteoperosis 7
Atrial Fibrilation 15
Heart Failure 35
Chronic Obstructive Pulmonary Disease 30
Diabetes 46
Dementia 23
Cancer 12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA during 2016 were emergency care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

emergency care 688
thoracic (chest) imaging 62
X-rays 62

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD.

Gender
Male 258
Female 415
Ethnicity
Non-Hispanic White 346
Black 142
Hispanic 134
Asian 35
Other 0
Native American 0
Age
From 65 to 74 226
From 75 to 84 139
85 and over 112
Less than 65 196

Conditions of Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD in 2016

Hypertension 75
High Cholesterol 56
Stroke 10
Ischemic Heart Disease 43
Depression 34
Chronic Kidney Disease 54
Asthma 44
Osteoperosis 8
Atrial Fibrilation 15
Heart Failure 34
Chronic Obstructive Pulmonary Disease 33
Diabetes 43
Dementia 24
Cancer 11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA during 2017 were emergency care, X-rays, thoracic (chest) imaging and catheterization.

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

catheterization 11
emergency care 809
thoracic (chest) imaging 52
X-rays 52

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD.

Gender
Male 355
Female 457
Ethnicity
Non-Hispanic White 427
Black 149
Hispanic 154
Asian 56
Other 0
Native American 0
Age
From 65 to 74 240
From 75 to 84 206
85 and over 137
Less than 65 229

Conditions of Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD in 2017

Hypertension 75
High Cholesterol 54
Stroke 10
Ischemic Heart Disease 51
Depression 33
Chronic Kidney Disease 55
Asthma 25
Osteoperosis 8
Atrial Fibrilation 18
Heart Failure 39
Chronic Obstructive Pulmonary Disease 37
Diabetes 44
Dementia 23
Cancer 11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA during 2018 were emergency care.

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

emergency care 541

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD.

Gender
Male 265
Female 352
Ethnicity
Non-Hispanic White 319
Black 116
Hispanic 132
Asian 32
Other 0
Native American 0
Age
From 65 to 74 196
From 75 to 84 151
85 and over 120
Less than 65 150

Conditions of Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD in 2018

Hypertension 75
High Cholesterol 65
Stroke 11
Ischemic Heart Disease 48
Depression 33
Chronic Kidney Disease 57
Asthma 23
Osteoperosis 10
Atrial Fibrilation 19
Heart Failure 38
Chronic Obstructive Pulmonary Disease 33
Diabetes 47
Dementia 26
Cancer 11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA during 2019 were emergency care.

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

emergency care 558

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD.

Gender
Male 260
Female 368
Ethnicity
Non-Hispanic White 299
Black 141
Hispanic 130
Asian 43
Other 15
Native American 0
Age
From 65 to 74 201
From 75 to 84 159
85 and over 94
Less than 65 174

Conditions of Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD in 2019

Hypertension 75
High Cholesterol 63
Stroke 9
Ischemic Heart Disease 44
Depression 36
Chronic Kidney Disease 58
Asthma 21
Osteoperosis 8
Atrial Fibrilation 16
Heart Failure 40
Chronic Obstructive Pulmonary Disease 31
Diabetes 49
Dementia 23
Cancer 11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA during 2020 were emergency care.

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

emergency care 447

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD.

Gender
Male 214
Female 322
Ethnicity
Non-Hispanic White 252
Black 120
Hispanic 101
Asian 45
Other 0
Native American 0
Age
From 65 to 74 176
From 75 to 84 119
85 and over 92
Less than 65 149

Conditions of Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD in 2020

Hypertension 75
High Cholesterol 62
Stroke 13
Ischemic Heart Disease 42
Depression 39
Chronic Kidney Disease 61
Asthma 18
Osteoperosis 8
Atrial Fibrilation 12
Heart Failure 38
Chronic Obstructive Pulmonary Disease 31
Diabetes 48
Dementia 27
Cancer 12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA during 2021 were emergency care.

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

emergency care 381

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD.

Gender
Male 189
Female 295
Ethnicity
Non-Hispanic White 237
Black 113
Hispanic 78
Asian 44
Other 0
Native American 0
Age
From 65 to 74 167
From 75 to 84 136
85 and over 77
Less than 65 104

Conditions of Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD in 2021

Hypertension 75
High Cholesterol 65
Stroke 10
Ischemic Heart Disease 40
Depression 36
Chronic Kidney Disease 60
Asthma 17
Osteoperosis 11
Atrial Fibrilation 17
Heart Failure 40
Chronic Obstructive Pulmonary Disease 31
Diabetes 48
Dementia 29
Cancer 10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA during 2022 were emergency care.

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

emergency care 403

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD.

Gender
Male 211
Female 282
Ethnicity
Non-Hispanic White 242
Black 112
Hispanic 76
Asian 42
Other 0
Native American 0
Age
From 65 to 74 173
From 75 to 84 125
85 and over 90
Less than 65 105

Conditions of Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD in 2022

Hypertension 75
High Cholesterol 70
Stroke 16
Ischemic Heart Disease 35
Depression 31
Chronic Kidney Disease 41
Asthma 21
Osteoperosis 13
Atrial Fibrilation 27
Heart Failure 36
Chronic Obstructive Pulmonary Disease 33
Diabetes 45
Dementia 24
Cancer 13

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA during 2023 were emergency care, hospital care and inpatient care.

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

emergency care 370
hospital care 69
inpatient care 69

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD.

Gender
Male 206
Female 317
Ethnicity
Non-Hispanic White 253
Black 124
Hispanic 90
Asian 41
Other 0
Native American 0
Age
From 65 to 74 186
From 75 to 84 150
85 and over 85
Less than 65 102

Conditions of Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD in 2023

Hypertension 75
High Cholesterol 74
Stroke 18
Ischemic Heart Disease 36
Depression 35
Chronic Kidney Disease 39
Asthma 24
Osteoperosis 15
Atrial Fibrilation 24
Heart Failure 36
Chronic Obstructive Pulmonary Disease 35
Diabetes 52
Dementia 21
Cancer 15

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA during 2024 were emergency care, hospital care and inpatient care.

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

emergency care 341
hospital care 45
inpatient care 45

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD.

Gender
Male 192
Female 278
Ethnicity
Non-Hispanic White 218
Black 126
Hispanic 81
Asian 32
Other 0
Native American 0
Age
From 65 to 74 195
From 75 to 84 134
85 and over 69
Less than 65 72

Conditions of Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD in 2024

Hypertension 75
High Cholesterol 75
Stroke 18
Ischemic Heart Disease 37
Depression 37
Chronic Kidney Disease 41
Asthma 21
Osteoperosis 13
Atrial Fibrilation 27
Heart Failure 34
Chronic Obstructive Pulmonary Disease 31
Diabetes 50
Dementia 20
Cancer 11

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Mary Antionette Fitzsimons, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mary Antionette Fitzsimons, MD treated as an emergency medicine doctor in Antioch, CA were emergency care, X-rays, thoracic (chest) imaging and hospital care.

catheterization 16
emergency care 545
hospital care 57
inpatient care 57
thoracic (chest) imaging 91
tracheal (windpipe) procedures 12
X-rays 91

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD.

Gender
Female 356
Male 242
Ethnicity
Black / African American 125
Asian / Pacific Islander 37
Non-Hispanic White 304
Hispanic 114
Native American / Alaskan Native 0
Other 1
Age
85 and over 103
75 to 84 146
Less than 65 155
65 to 74 193

Average of Total of Conditions of Medicare patients treated by Dr. Mary Antionette Fitzsimons, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Mary Antionette Fitzsimons, MD treated were hypertension, high cholesterol, chronic kidney disease and diabetes.

Hypertension 69
High Cholesterol 58
Stroke 11
Ischemic Heart Disease 39
Depression 32
Chronic Kidney Disease 46
Asthma 22
Osteoporosis 9
Heart Failure 34
Chronic Obstructive Pulmonary Disease 29
Diabetes 42
Atrial Fibrillation 17
Cancer 10
Dementia 22

Education & Training

Dr. Mary Antionette Fitzsimons, MD graduated from Northwestern University, Feinberg School of Medicine. She completed residency at Northwestern Memorial Hospital. She is certified by the Board Certification: Emergency Medicine and has a state license in California.

Medical School: Northwestern University, Feinberg School of Medicine

Residency: Northwestern Memorial Hospital

Board Certification: Board Certification: Emergency Medicine

Licensed In: California

Affiliations & Hospitals

Dr. Mary Antionette Fitzsimons, MD is associated with these hospitals and organizations:

Sutter Health

Ratings & Reviews

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Biography

Dr. Mary Fitzsimons is an emergency medicine specialist. Dr. Fitzsimons is affiliated with Sutter Health. She is a graduate of Northwestern University, Feinberg School of Medicine and a graduate of Northwestern Memorial Hospital's residency program.

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