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Home > FL Providers

Dr. Leonard J. Zwerling, MD

(3 Ratings)

Specializes in: Adult Cardiology

Boston University School of Medicine (1969)

4675 Ponce De Leon Boulevard Suite 203
Coral Gables, FL 33146

(305) 666-4633

Dr. Leonard J. Zwerling, MD is a cardiologist in Coral Gables, FL specializing in adult cardiology. He graduated from Boston University School of Medicine in 1969 and has 57 years of experience. Dr. Leonard J. Zwerling, MD is affiliated with Baptist Health.

Office Locations

4675 Ponce De Leon Boulevard Suite 203
Coral Gables, FL 33146

(305) 666-4633

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6200 Sunset Drive Suite 401
South Miami, FL 33143

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6200 Sw 73rd Street
South Miami, FL 33143

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Noteworthy Medicare Patient Procedures Performed by Dr. Leonard J. Zwerling, MD in 2024

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

Top 5%

By Affordability:

blood draw

blood draw for lab tests

limited abdominal ultrasound

phlebotomy for lab tests

venipuncture

In 2024, Dr. Leonard J. Zwerling, MD had a list price for blood draw, blood draw for lab tests, limited abdominal ultrasound, phlebotomy for lab tests, and venipuncture (phlebotomy) that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Florida. 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.

Top 25%

By Affordability:

In 2012, Dr. Leonard J. Zwerling, MD had a list price for abdominal imaging, abdominal ultrasound, cardiac imaging, echocardiogram (echo), ultrasound (sonogram), and vascular procedures that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Florida. 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. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL during 2012 were blood draw, cardiac procedures, inpatient care and hospital care.

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

ambulatory monitoring	31
blood draw	562
cardiac procedures	279
diabetes management	20
doctor visit	933
hospital care	272
inpatient care	272
lab tests	188
nuclear scan	46
preventive care	143
stress testing	110
ultrasound (sonogram)	228
vaccines	123
vascular procedures	74

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL during 2013 were blood draw, inpatient care, hospital care and cardiac procedures.

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

ambulatory monitoring	29
blood draw	547
cardiac procedures	286
diabetes management	16
doctor visit	877
hospital care	331
inpatient care	331
lab tests	114
nuclear scan	32
preventive care	87
stress testing	110
ultrasound (sonogram)	230
vaccines	71
vascular procedures	56

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard J. Zwerling, MD.

**Gender**
Male	321
Female	358

**Ethnicity**
Non-Hispanic White	465
Black	20
Hispanic	180
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	211
From 75 to 84	240
85 and over	191
Less than 65	37

Conditions of Medicare patients treated by Dr. Leonard J. Zwerling, MD in 2013

Hypertension	75
High Cholesterol	72
Stroke	11
Ischemic Heart Disease	59
Depression	26
Chronic Kidney Disease	33
Asthma	10
Osteoperosis	15
Atrial Fibrilation	30
Heart Failure	36
Chronic Obstructive Pulmonary Disease	23
Diabetes	45
Dementia	21
Cancer	17

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL during 2014 were blood draw, cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

ambulatory monitoring	34
blood draw	462
cardiac procedures	269
doctor visit	759
hospital care	219
inpatient care	219
lab tests	60
nuclear scan	46
preventive care	62
stress testing	99
ultrasound (sonogram)	195
vaccines	62
vascular procedures	59

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard J. Zwerling, MD.

**Gender**
Male	271
Female	298

**Ethnicity**
Non-Hispanic White	382
Black	0
Hispanic	159
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	171
From 75 to 84	197
85 and over	175
Less than 65	26

Conditions of Medicare patients treated by Dr. Leonard J. Zwerling, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	57
Depression	24
Chronic Kidney Disease	35
Asthma	10
Osteoperosis	15
Atrial Fibrilation	27
Heart Failure	34
Chronic Obstructive Pulmonary Disease	22
Diabetes	46
Dementia	23
Cancer	19

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL during 2015 were blood draw, cardiac procedures, ultrasound (sonogram) and hospital care.

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

abdominal imaging	20
ambulatory monitoring	32
blood draw	383
cardiac procedures	288
doctor visit	671
hospital care	194
inpatient care	194
nuclear scan	44
preventive care	49
stress testing	114
ultrasound (sonogram)	242
vaccines	49
vascular procedures	60

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard J. Zwerling, MD.

**Gender**
Male	618
Female	576

**Ethnicity**
Non-Hispanic White	778
Black	48
Hispanic	346
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	394
From 75 to 84	412
85 and over	316
Less than 65	72

Conditions of Medicare patients treated by Dr. Leonard J. Zwerling, MD in 2015

Hypertension	75
High Cholesterol	73
Stroke	12
Ischemic Heart Disease	56
Depression	24
Chronic Kidney Disease	40
Asthma	17
Osteoperosis	13
Atrial Fibrilation	30
Heart Failure	37
Chronic Obstructive Pulmonary Disease	26
Diabetes	43
Dementia	20
Cancer	18

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL during 2016 were blood draw, cardiac procedures, inpatient care and hospital care.

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

abdominal imaging	13
ambulatory monitoring	19
blood draw	385
cardiac procedures	225
doctor visit	727
hospital care	206
inpatient care	206
lab tests	57
nuclear scan	35
preventive care	28
stress testing	96
ultrasound (sonogram)	183
vaccines	28
vascular procedures	43

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard J. Zwerling, MD.

**Gender**
Male	286
Female	287

**Ethnicity**
Non-Hispanic White	377
Black	19
Hispanic	164
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	197
From 75 to 84	178
85 and over	167
Less than 65	31

Conditions of Medicare patients treated by Dr. Leonard J. Zwerling, MD in 2016

Hypertension	75
High Cholesterol	74
Stroke	14
Ischemic Heart Disease	58
Depression	24
Chronic Kidney Disease	42
Asthma	28
Osteoperosis	14
Atrial Fibrilation	26
Heart Failure	32
Chronic Obstructive Pulmonary Disease	27
Diabetes	40
Dementia	19
Cancer	16

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL during 2017 were blood draw, cardiac procedures, ultrasound (sonogram) and stress testing.

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

abdominal imaging	15
ambulatory monitoring	23
blood draw	341
cardiac procedures	256
doctor visit	650
hospital care	92
inpatient care	92
nuclear scan	39
preventive care	40
stress testing	104
ultrasound (sonogram)	209
vaccines	40
vascular procedures	52

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard J. Zwerling, MD.

**Gender**
Male	261
Female	271

**Ethnicity**
Non-Hispanic White	355
Black	0
Hispanic	145
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	179
From 75 to 84	179
85 and over	147
Less than 65	27

Conditions of Medicare patients treated by Dr. Leonard J. Zwerling, MD in 2017

Hypertension	75
High Cholesterol	69
Stroke	17
Ischemic Heart Disease	56
Depression	27
Chronic Kidney Disease	41
Asthma	9
Osteoperosis	14
Atrial Fibrilation	26
Heart Failure	28
Chronic Obstructive Pulmonary Disease	20
Diabetes	35
Dementia	18
Cancer	17

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL during 2018 were blood draw, cardiac procedures, ultrasound (sonogram) and stress testing.

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

abdominal imaging	15
ambulatory monitoring	16
blood draw	366
cardiac procedures	286
doctor visit	725
hospital care	136
inpatient care	122
lab tests	49
nuclear scan	45
outpatient care	14
preventive care	41
stress testing	141
ultrasound (sonogram)	224
vaccines	41
vascular procedures	61

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard J. Zwerling, MD.

**Gender**
Male	305
Female	296

**Ethnicity**
Non-Hispanic White	395
Black	21
Hispanic	161
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	200
From 75 to 84	210
85 and over	153
Less than 65	38

Conditions of Medicare patients treated by Dr. Leonard J. Zwerling, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	19
Ischemic Heart Disease	59
Depression	28
Chronic Kidney Disease	45
Asthma	10
Osteoperosis	17
Atrial Fibrilation	28
Heart Failure	35
Chronic Obstructive Pulmonary Disease	24
Diabetes	40
Dementia	21
Cancer	17

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL during 2019 were cardiac procedures, blood draw, ultrasound (sonogram) and stress testing.

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

ambulatory monitoring	22
blood draw	265
cardiac procedures	311
doctor visit	707
hospital care	82
inpatient care	64
lab tests	12
nuclear scan	51
outpatient care	18
stress testing	154
ultrasound (sonogram)	200
vascular procedures	43

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard J. Zwerling, MD.

**Gender**
Male	312
Female	297

**Ethnicity**
Non-Hispanic White	404
Black	0
Hispanic	161
Asian	0
Other	19
Native American	0

**Age**
From 65 to 74	209
From 75 to 84	203
85 and over	162
Less than 65	35

Conditions of Medicare patients treated by Dr. Leonard J. Zwerling, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	18
Ischemic Heart Disease	63
Depression	23
Chronic Kidney Disease	42
Asthma	10
Osteoperosis	15
Atrial Fibrilation	26
Heart Failure	38
Chronic Obstructive Pulmonary Disease	19
Diabetes	35
Dementia	21
Cancer	16

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL during 2020 were cardiac procedures, ultrasound (sonogram), stress testing and blood draw.

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

blood draw	58
cardiac procedures	163
doctor visit	689
nuclear scan	29
stress testing	72
ultrasound (sonogram)	124
vascular procedures	33

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard J. Zwerling, MD.

**Gender**
Male	226
Female	207

**Ethnicity**
Non-Hispanic White	298
Black	13
Hispanic	104
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	142
From 75 to 84	150
85 and over	117
Less than 65	24

Conditions of Medicare patients treated by Dr. Leonard J. Zwerling, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	22
Ischemic Heart Disease	64
Depression	21
Chronic Kidney Disease	41
Asthma	9
Osteoperosis	15
Atrial Fibrilation	26
Heart Failure	37
Chronic Obstructive Pulmonary Disease	18
Diabetes	30
Dementia	18
Cancer	20

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL during 2021 were cardiac procedures, ultrasound (sonogram), stress testing and blood draw.

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

abdominal imaging	11
ambulatory monitoring	18
blood draw	62
cardiac procedures	275
doctor visit	556
nuclear scan	45
preventive care	25
stress testing	143
ultrasound (sonogram)	189
vaccines	25
vascular procedures	49

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard J. Zwerling, MD.

**Gender**
Male	259
Female	254

**Ethnicity**
Non-Hispanic White	332
Black	15
Hispanic	149
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	177
From 75 to 84	195
85 and over	121
Less than 65	20

Conditions of Medicare patients treated by Dr. Leonard J. Zwerling, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	19
Ischemic Heart Disease	62
Depression	27
Chronic Kidney Disease	38
Asthma	8
Osteoperosis	18
Atrial Fibrilation	24
Heart Failure	31
Chronic Obstructive Pulmonary Disease	16
Diabetes	30
Dementia	24
Cancer	22

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL during 2022 were cardiac procedures, ultrasound (sonogram), blood draw and stress testing.

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

abdominal imaging	13
ambulatory monitoring	16
blood draw	90
cardiac procedures	179
doctor visit	483
nuclear scan	16
preventive care	11
stress testing	76
ultrasound (sonogram)	133
vaccines	11
vascular procedures	33

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard J. Zwerling, MD.

**Gender**
Male	240
Female	231

**Ethnicity**
Non-Hispanic White	330
Black	0
Hispanic	108
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	148
From 75 to 84	199
85 and over	113
Less than 65	11

Conditions of Medicare patients treated by Dr. Leonard J. Zwerling, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	24
Ischemic Heart Disease	54
Depression	23
Chronic Kidney Disease	28
Asthma	10
Osteoperosis	20
Atrial Fibrilation	31
Heart Failure	24
Chronic Obstructive Pulmonary Disease	17
Diabetes	29
Dementia	14
Cancer	26

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL during 2023 were cardiac procedures, ultrasound (sonogram), blood draw and stress testing.

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

ambulatory monitoring	11
blood draw	128
cardiac procedures	210
doctor visit	506
nuclear scan	31
stress testing	88
ultrasound (sonogram)	163
vascular procedures	52

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard J. Zwerling, MD.

**Gender**
Male	240
Female	219

**Ethnicity**
Non-Hispanic White	328
Black	0
Hispanic	107
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	162
From 75 to 84	192
85 and over	94
Less than 65	11

Conditions of Medicare patients treated by Dr. Leonard J. Zwerling, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	24
Ischemic Heart Disease	54
Depression	25
Chronic Kidney Disease	25
Asthma	10
Osteoperosis	20
Atrial Fibrilation	34
Heart Failure	24
Chronic Obstructive Pulmonary Disease	20
Diabetes	25
Dementia	12
Cancer	25

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL during 2024 were cardiac procedures, ultrasound (sonogram), blood draw and stress testing.

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

abdominal imaging	14
ambulatory monitoring	18
blood draw	108
cardiac procedures	215
doctor visit	527
nuclear scan	17
stress testing	54
ultrasound (sonogram)	184
vascular procedures	27

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard J. Zwerling, MD.

**Gender**
Male	255
Female	194

**Ethnicity**
Non-Hispanic White	315
Black	0
Hispanic	104
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	143
From 75 to 84	189
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Leonard J. Zwerling, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	23
Ischemic Heart Disease	59
Depression	23
Chronic Kidney Disease	29
Asthma	10
Osteoperosis	22
Atrial Fibrilation	34
Heart Failure	22
Chronic Obstructive Pulmonary Disease	21
Diabetes	25
Dementia	15
Cancer	25

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Leonard J. Zwerling, MD for Medicare patients.

The highest averages for the top procedures that Dr. Leonard J. Zwerling, MD treated as a cardiologist in Coral Gables, FL were blood draw, cardiac procedures, ultrasound (sonogram) and hospital care.

abdominal imaging	14
ambulatory monitoring	22
blood draw	289
cardiac procedures	249
diabetes management	18
doctor visit	677
hospital care	191
inpatient care	187
lab tests	80
nuclear scan	36
outpatient care	16
preventive care	54
stress testing	104
ultrasound (sonogram)	192
vaccines	50
vascular procedures	49

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Leonard J. Zwerling, MD.

**Gender**
Male	276
Female	268

**Ethnicity**
Black / African American	10
Asian / Pacific Islander	0
Non-Hispanic White	366
Native American / Alaskan Native	0
Hispanic	145
Other	4

**Age**
75 to 84	195
85 and over	135
Less than 65	25
65 to 74	179

Average of Total of Conditions of Medicare patients treated by Dr. Leonard J. Zwerling, MD From 2012 - 2024

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

Hypertension	69
High Cholesterol	68
Stroke	16
Ischemic Heart Disease	53
Depression	22
Chronic Kidney Disease	33
Asthma	10
Osteoporosis	15
Heart Failure	29
Chronic Obstructive Pulmonary Disease	19
Diabetes	32
Atrial Fibrillation	26
Dementia	17
Cancer	18

Education & Training

Dr. Leonard J. Zwerling, MD graduated from Boston University School of Medicine in 1969. He completed residency at The Mount Sinai Medical Center, New York. He is certified by the Internal Medicine, American Board of Internal Medicine, Cardiovascular Disease, American Board of Internal Medicine and has a state license in Florida.

Medical School: Boston University School of Medicine (1969)

Residency: The Mount Sinai Medical Center, New York (1972)

Board Certification: Internal Medicine, American Board of Internal Medicine, Cardiovascular Disease, American Board of Internal Medicine (1972)

Licensed In: Florida

Ratings & Reviews

Dr. Leonard J. Zwerling, MD has an exceptional overall rating with an average of 4.67 out of 5 stars based on 3 ratings. We collect ratings and reviews of Dr. Leonard J. Zwerling, MD from all over the web to help you find the right in Coral Gables, FL.

4.67

Overall Rating

(3 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
E.R. Squibb & Sons, L.L.C.	$934 ELIQUIS $891	CAMZYOS $20	$23
Gilead Sciences Inc	$845 $845
Medtronic Vascular, Inc.	$649 Viva $443	Cardiac Resynchronization Therapy - CRT $139	Cardiac Diagnostics and Monitoring $43	Cardiac Monitors - Insertable $15	CareLink $10
Pfizer Inc.	$577 ELIQUIS $521	NURTEC ODT $35	VYNDAQEL $22
Astellas Pharma US Inc	$426 Lexiscan $426
Other	$4,148 BRILINTA $362	MULTAQ $318	XARELTO $304	ENTRESTO $266	PRALUENT (alirocumab) Injection $246	Other $2,652

**Types of Payments**
Food and Beverage	$7,482
Education	$99

Biography

Dr. Leonard Zwerling is an adult cardiology specialist. Patient ratings for Dr. Zwerling average 4.5 stars (out of 5). He is professionally affiliated with Baptist Health. He is a graduate of Boston University School of Medicine and a graduate of The Mount Sinai Medical Center, New York's residency program.