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Home > FL Providers > Emergency Physicians

Dr. Leonardo Lazaro Alonso, DO

(1 Rating)

Specializes in: Emergency Medicine

8761 Perimeter Park Boulevard Suite 106
Jacksonville, FL 32216

(904) 641-6628

Dr. Leonardo Lazaro Alonso, DO is an emergency medicine doctor in Jacksonville, FL specializing in emergency medicine.

Office Locations

8761 Perimeter Park Boulevard Suite 106
Jacksonville, FL 32216

(904) 641-6628

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In The News (see more mentions in the news)

“Dr. Leonardo Alonso, a Jacksonville emergency medicine physician, said he heard of the protest through Physicians for a National Health Program.”—"UF students and faculty protest Florida s planned elimination of vaccine mandates", The Independent Florida Alligator, September 2025

“Dr Leonardo Alonso, who works in several emergency rooms in Jacksonville, one of Florida's hardest-hit areas, said some hospitals are sending some COVID-19 patients home with oxygen and a monitor...”—"US averaging 100K Covid cases per day for first time since February", Daily Mail Online, August 2021

“Dr. Leonardo Alonso, who works in various emergency units in Jacksonville, one of the hardest-hit areas in Florida, said some hospitals are sending some patients home with oxygen tanks and...”—"The United States once again averaged 100,000 cases per day of delta variant and unvaccinated Covid 19.", Verdict, August 2021

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Leonardo Lazaro Alonso, DO treated as an emergency medicine doctor in Jacksonville, FL during 2012 were emergency care.

Volume of procedures performed by Dr. Leonardo Lazaro Alonso, DO for Medicare patients.

emergency care	486

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Leonardo Lazaro Alonso, DO treated as an emergency medicine doctor in Jacksonville, FL during 2013 were emergency care.

Volume of procedures performed by Dr. Leonardo Lazaro Alonso, DO for Medicare patients.

emergency care	492

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO.

**Gender**
Male	209
Female	330

**Ethnicity**
Non-Hispanic White	446
Black	55
Hispanic	19
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	144
From 75 to 84	155
85 and over	113
Less than 65	127

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2013

Hypertension	75
High Cholesterol	66
Stroke	17
Ischemic Heart Disease	61
Depression	43
Chronic Kidney Disease	44
Asthma	17
Osteoperosis	13
Atrial Fibrilation	23
Heart Failure	39
Chronic Obstructive Pulmonary Disease	43
Diabetes	47
Dementia	32
Cancer	14

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Leonardo Lazaro Alonso, DO treated as an emergency medicine doctor in Jacksonville, FL during 2014 were emergency care.

Volume of procedures performed by Dr. Leonardo Lazaro Alonso, DO for Medicare patients.

emergency care	340

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO.

**Gender**
Male	143
Female	232

**Ethnicity**
Non-Hispanic White	309
Black	40
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	106
From 75 to 84	105
85 and over	62
Less than 65	102

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2014

Hypertension	75
High Cholesterol	69
Stroke	15
Ischemic Heart Disease	54
Depression	46
Chronic Kidney Disease	50
Asthma	19
Osteoperosis	13
Atrial Fibrilation	21
Heart Failure	39
Chronic Obstructive Pulmonary Disease	42
Diabetes	49
Dementia	29
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Leonardo Lazaro Alonso, DO treated as an emergency medicine doctor in Jacksonville, FL during 2015 were emergency care.

Volume of procedures performed by Dr. Leonardo Lazaro Alonso, DO for Medicare patients.

emergency care	332

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO.

**Gender**
Male	334
Female	410

**Ethnicity**
Non-Hispanic White	598
Black	102
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	218
From 75 to 84	186
85 and over	116
Less than 65	224

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2015

Hypertension	75
High Cholesterol	64
Stroke	15
Ischemic Heart Disease	57
Depression	43
Chronic Kidney Disease	47
Asthma	32
Osteoperosis	9
Atrial Fibrilation	22
Heart Failure	37
Chronic Obstructive Pulmonary Disease	37
Diabetes	49
Dementia	28
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Leonardo Lazaro Alonso, DO treated as an emergency medicine doctor in Jacksonville, FL during 2016 were emergency care.

Volume of procedures performed by Dr. Leonardo Lazaro Alonso, DO for Medicare patients.

emergency care	571

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO.

**Gender**
Male	278
Female	345

**Ethnicity**
Non-Hispanic White	502
Black	90
Hispanic	19
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	171
From 75 to 84	167
85 and over	129
Less than 65	156

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2016

Hypertension	75
High Cholesterol	67
Stroke	15
Ischemic Heart Disease	59
Depression	44
Chronic Kidney Disease	58
Asthma	45
Osteoperosis	11
Atrial Fibrilation	23
Heart Failure	39
Chronic Obstructive Pulmonary Disease	41
Diabetes	50
Dementia	31
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Leonardo Lazaro Alonso, DO treated as an emergency medicine doctor in Jacksonville, FL during 2017 were emergency care.

Volume of procedures performed by Dr. Leonardo Lazaro Alonso, DO for Medicare patients.

emergency care	413

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO.

**Gender**
Male	221
Female	279

**Ethnicity**
Non-Hispanic White	411
Black	55
Hispanic	19
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	159
From 75 to 84	136
85 and over	72
Less than 65	133

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2017

Hypertension	75
High Cholesterol	66
Stroke	15
Ischemic Heart Disease	62
Depression	45
Chronic Kidney Disease	57
Asthma	15
Osteoperosis	9
Atrial Fibrilation	23
Heart Failure	42
Chronic Obstructive Pulmonary Disease	42
Diabetes	48
Dementia	28
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Leonardo Lazaro Alonso, DO treated as an emergency medicine doctor in Jacksonville, FL during 2018 were emergency care.

Volume of procedures performed by Dr. Leonardo Lazaro Alonso, DO for Medicare patients.

emergency care	294

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO.

**Gender**
Male	124
Female	188

**Ethnicity**
Non-Hispanic White	289
Black	11
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	84
85 and over	51
Less than 65	74

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2018

Hypertension	75
High Cholesterol	62
Stroke	12
Ischemic Heart Disease	61
Depression	43
Chronic Kidney Disease	49
Asthma	15
Osteoperosis	7
Atrial Fibrilation	20
Heart Failure	34
Chronic Obstructive Pulmonary Disease	37
Diabetes	40
Dementia	27
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Leonardo Lazaro Alonso, DO treated as an emergency medicine doctor in Jacksonville, FL during 2019 were emergency care.

Volume of procedures performed by Dr. Leonardo Lazaro Alonso, DO for Medicare patients.

emergency care	187

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO.

**Gender**
Male	67
Female	127

**Ethnicity**
Non-Hispanic White	154
Black	24
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	51
From 75 to 84	55
85 and over	42
Less than 65	46

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2019

Hypertension	75
High Cholesterol	64
Stroke	9
Ischemic Heart Disease	51
Depression	40
Chronic Kidney Disease	51
Asthma	11
Osteoperosis	11
Atrial Fibrilation	18
Heart Failure	34
Chronic Obstructive Pulmonary Disease	31
Diabetes	47
Dementia	26
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Leonardo Lazaro Alonso, DO treated as an emergency medicine doctor in Jacksonville, FL during 2020 were emergency care.

Volume of procedures performed by Dr. Leonardo Lazaro Alonso, DO for Medicare patients.

emergency care	165

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO.

**Gender**
Male	76
Female	90

**Ethnicity**
Non-Hispanic White	125
Black	27
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	58
From 75 to 84	41
85 and over	24
Less than 65	43

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2020

Hypertension	75
High Cholesterol	65
Stroke	8
Ischemic Heart Disease	53
Depression	37
Chronic Kidney Disease	52
Asthma	8
Osteoperosis	0
Atrial Fibrilation	17
Heart Failure	30
Chronic Obstructive Pulmonary Disease	23
Diabetes	41
Dementia	18
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Leonardo Lazaro Alonso, DO treated as an emergency medicine doctor in Jacksonville, FL during 2021 were emergency care.

Volume of procedures performed by Dr. Leonardo Lazaro Alonso, DO for Medicare patients.

emergency care	185

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO.

**Gender**
Male	69
Female	116

**Ethnicity**
Non-Hispanic White	136
Black	31
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	65
From 75 to 84	46
85 and over	42
Less than 65	32

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2021

Hypertension	75
High Cholesterol	63
Stroke	9
Ischemic Heart Disease	43
Depression	35
Chronic Kidney Disease	49
Asthma	10
Osteoperosis	15
Atrial Fibrilation	17
Heart Failure	29
Chronic Obstructive Pulmonary Disease	21
Diabetes	39
Dementia	18
Cancer	14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Leonardo Lazaro Alonso, DO treated as an emergency medicine doctor in Jacksonville, FL during 2022 were emergency care.

Volume of procedures performed by Dr. Leonardo Lazaro Alonso, DO for Medicare patients.

emergency care	190

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO.

**Gender**
Male	68
Female	118

**Ethnicity**
Non-Hispanic White	139
Black	29
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	65
From 75 to 84	60
85 and over	38
Less than 65	23

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2022

Hypertension	75
High Cholesterol	75
Stroke	18
Ischemic Heart Disease	41
Depression	30
Chronic Kidney Disease	34
Asthma	14
Osteoperosis	12
Atrial Fibrilation	22
Heart Failure	30
Chronic Obstructive Pulmonary Disease	26
Diabetes	42
Dementia	18
Cancer	11

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Leonardo Lazaro Alonso, DO treated as an emergency medicine doctor in Jacksonville, FL during 2023 were emergency care.

Volume of procedures performed by Dr. Leonardo Lazaro Alonso, DO for Medicare patients.

emergency care	102

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO.

**Gender**
Male	54
Female	57

**Ethnicity**
Non-Hispanic White	77
Black	16
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	48
From 75 to 84	25
85 and over	24
Less than 65	14

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2023

Hypertension	75
High Cholesterol	72
Stroke	22
Ischemic Heart Disease	43
Depression	32
Chronic Kidney Disease	32
Asthma	10
Osteoperosis	11
Atrial Fibrilation	32
Heart Failure	32
Chronic Obstructive Pulmonary Disease	32
Diabetes	49
Dementia	26
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Leonardo Lazaro Alonso, DO for Medicare patients.

The highest averages for the top procedures that Dr. Leonardo Lazaro Alonso, DO treated as an emergency medicine doctor in Jacksonville, FL were emergency care.

emergency care	313

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO.

**Gender**
Female	191
Male	136

**Ethnicity**
Black / African American	40
Asian / Pacific Islander	0
Non-Hispanic White	265
Hispanic	4
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	59
75 to 84	88
Less than 65	81
65 to 74	99

Average of Total of Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Leonardo Lazaro Alonso, DO treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	68
High Cholesterol	61
Stroke	12
Ischemic Heart Disease	48
Depression	36
Chronic Kidney Disease	43
Asthma	16
Osteoporosis	9
Heart Failure	32
Chronic Obstructive Pulmonary Disease	31
Diabetes	41
Atrial Fibrillation	19
Dementia	23
Cancer	11

Education & Training

He has a state license in West Virginia.

Licensed In: West Virginia

Ratings & Reviews

Dr. Leonardo Lazaro Alonso, DO has an exceptional overall rating with an average of 5.0 out of 5 stars based on 1 ratings. We collect ratings and reviews of Dr. Leonardo Lazaro Alonso, DO from all over the web to help you find the right in Jacksonville, FL.

Overall Rating

(1 Rating)

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General Payments

These charts describe general payments received by Dr. Leonardo Lazaro Alonso, DO. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Allergan Inc.	$275 VRAYLAR $256	NAMENDA XR $19
CSL Behring	$125 Kcentra $125
AngioDynamics, Inc.	$115 $115
Janssen Pharmaceuticals, Inc	$80 XARELTO $80
Lundbeck LLC	$58 Brintellix $58
Other	$24 QUVIVIQ $24

**Types of Payments**
Food and Beverage	$677

Biography

Dr. Leonardo Alonso sees patients in Jacksonville, FL. His medical specialty is emergency medicine. Dr. Alonso obtained a license to practice in Florida.

Select Year:

Dr. Leonardo Lazaro Alonso, DO

Office Locations

In The News (see more mentions in the news)

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. Leonardo Lazaro Alonso, DO in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO in 2023

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Average Medicare Patient Data From 2012 - 2023

Average of Total of Conditions of Medicare patients treated by Dr. Leonardo Lazaro Alonso, DO From 2012 - 2023

Education & Training

Ratings & Reviews

General Payments

Biography

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