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Dr. Guillermo Marrero, MD

Accepting New Patients

(Dr. Guillermo Marrero, MD)

(5 Ratings)

Specializes in: Internal Medicine (Adult Medicine)

American University of the Caribbean School of Medicine (1993)

1000 Executive Drive Suite 1
Oviedo, FL 32765

(407) 971-1970

Dr. Guillermo Marrero, MD is an internist in Oviedo, FL specializing in internal medicine (adult medicine). He graduated from American University of the Caribbean School of Medicine in 1993 and has 33 years of experience.

Office Locations

1000 Executive Drive Suite 1
Oviedo, FL 32765

open_in_new

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Guillermo Marrero, MD treated as an internist in Oviedo, FL during 2012 were preventive care, vaccines, lab tests and ear procedures.

Volume of procedures performed by Dr. Guillermo Marrero, MD for Medicare patients.

doctor visit	1040
ear procedures	15
lab tests	50
preventive care	61
vaccines	61

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Guillermo Marrero, MD treated as an internist in Oviedo, FL during 2013 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Guillermo Marrero, MD for Medicare patients.

doctor visit	914
lab tests	35
preventive care	51
vaccines	51

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Guillermo Marrero, MD.

**Gender**
Male	97
Female	131

**Ethnicity**
Non-Hispanic White	114
Black	0
Hispanic	98
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	71
85 and over	24
Less than 65	30

Conditions of Medicare patients treated by Dr. Guillermo Marrero, MD in 2013

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	46
Depression	21
Chronic Kidney Disease	24
Asthma	8
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	14
Chronic Obstructive Pulmonary Disease	11
Diabetes	33
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Guillermo Marrero, MD treated as an internist in Oviedo, FL during 2014 were preventive care and vaccines.

Volume of procedures performed by Dr. Guillermo Marrero, MD for Medicare patients.

doctor visit	899
preventive care	73
vaccines	59

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Guillermo Marrero, MD.

**Gender**
Male	104
Female	139

**Ethnicity**
Non-Hispanic White	119
Black	0
Hispanic	111
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	117
From 75 to 84	69
85 and over	26
Less than 65	31

Conditions of Medicare patients treated by Dr. Guillermo Marrero, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	44
Depression	23
Chronic Kidney Disease	22
Asthma	10
Osteoperosis	8
Atrial Fibrilation	7
Heart Failure	14
Chronic Obstructive Pulmonary Disease	11
Diabetes	36
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Guillermo Marrero, MD treated as an internist in Oviedo, FL during 2015 were preventive care and vaccines.

Volume of procedures performed by Dr. Guillermo Marrero, MD for Medicare patients.

doctor visit	740
preventive care	35
vaccines	23

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Guillermo Marrero, MD.

**Gender**
Male	190
Female	266

**Ethnicity**
Non-Hispanic White	224
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	214
From 75 to 84	136
85 and over	58
Less than 65	48

Conditions of Medicare patients treated by Dr. Guillermo Marrero, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	43
Depression	23
Chronic Kidney Disease	15
Asthma	8
Osteoperosis	5
Atrial Fibrilation	8
Heart Failure	15
Chronic Obstructive Pulmonary Disease	10
Diabetes	32
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Guillermo Marrero, MD treated as an internist in Oviedo, FL during 2016 were preventive care and vaccines.

Volume of procedures performed by Dr. Guillermo Marrero, MD for Medicare patients.

doctor visit	750
preventive care	36
vaccines	36

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Guillermo Marrero, MD.

**Gender**
Male	101
Female	124

**Ethnicity**
Non-Hispanic White	109
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	75
85 and over	25
Less than 65	22

Conditions of Medicare patients treated by Dr. Guillermo Marrero, MD in 2016

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	47
Depression	20
Chronic Kidney Disease	24
Asthma	9
Osteoperosis	7
Atrial Fibrilation	8
Heart Failure	14
Chronic Obstructive Pulmonary Disease	5
Diabetes	38
Dementia	9
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Guillermo Marrero, MD for Medicare patients.

doctor visit	955

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Guillermo Marrero, MD.

**Gender**
Male	101
Female	137

**Ethnicity**
Non-Hispanic White	120
Black	0
Hispanic	107
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	107
From 75 to 84	77
85 and over	29
Less than 65	25

Conditions of Medicare patients treated by Dr. Guillermo Marrero, MD in 2017

Hypertension	75
High Cholesterol	72
Stroke	0
Ischemic Heart Disease	45
Depression	18
Chronic Kidney Disease	30
Asthma	8
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	13
Chronic Obstructive Pulmonary Disease	8
Diabetes	38
Dementia	8
Cancer	8

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Guillermo Marrero, MD for Medicare patients.

doctor visit	1050

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Guillermo Marrero, MD.

**Gender**
Male	101
Female	132

**Ethnicity**
Non-Hispanic White	115
Black	0
Hispanic	106
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	100
From 75 to 84	76
85 and over	32
Less than 65	25

Conditions of Medicare patients treated by Dr. Guillermo Marrero, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	45
Depression	18
Chronic Kidney Disease	39
Asthma	10
Osteoperosis	6
Atrial Fibrilation	9
Heart Failure	15
Chronic Obstructive Pulmonary Disease	10
Diabetes	43
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Guillermo Marrero, MD treated as an internist in Oviedo, FL during 2019 were preventive care and vaccines.

Volume of procedures performed by Dr. Guillermo Marrero, MD for Medicare patients.

doctor visit	948
preventive care	15
vaccines	15

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Guillermo Marrero, MD.

**Gender**
Male	92
Female	138

**Ethnicity**
Non-Hispanic White	112
Black	0
Hispanic	106
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	100
From 75 to 84	75
85 and over	34
Less than 65	21

Conditions of Medicare patients treated by Dr. Guillermo Marrero, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	41
Depression	17
Chronic Kidney Disease	37
Asthma	8
Osteoperosis	10
Atrial Fibrilation	8
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	39
Dementia	6
Cancer	8

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Guillermo Marrero, MD treated as an internist in Oviedo, FL during 2020 were preventive care and vaccines.

Volume of procedures performed by Dr. Guillermo Marrero, MD for Medicare patients.

doctor visit	931
preventive care	41
vaccines	41

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Guillermo Marrero, MD.

**Gender**
Male	92
Female	131

**Ethnicity**
Non-Hispanic White	114
Black	0
Hispanic	95
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	105
From 75 to 84	67
85 and over	39
Less than 65	12

Conditions of Medicare patients treated by Dr. Guillermo Marrero, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	42
Depression	11
Chronic Kidney Disease	35
Asthma	10
Osteoperosis	9
Atrial Fibrilation	9
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	37
Dementia	12
Cancer	7

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Guillermo Marrero, MD treated as an internist in Oviedo, FL during 2021 were preventive care and vaccines.

Volume of procedures performed by Dr. Guillermo Marrero, MD for Medicare patients.

doctor visit	711
preventive care	12
vaccines	12

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Guillermo Marrero, MD.

**Gender**
Male	86
Female	114

**Ethnicity**
Non-Hispanic White	102
Black	0
Hispanic	85
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	63
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Guillermo Marrero, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	45
Depression	16
Chronic Kidney Disease	39
Asthma	8
Osteoperosis	13
Atrial Fibrilation	9
Heart Failure	15
Chronic Obstructive Pulmonary Disease	6
Diabetes	44
Dementia	12
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Guillermo Marrero, MD treated as an internist in Oviedo, FL during 2022 were preventive care and vaccines.

Volume of procedures performed by Dr. Guillermo Marrero, MD for Medicare patients.

doctor visit	695
preventive care	14
vaccines	14

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Guillermo Marrero, MD.

**Gender**
Male	84
Female	110

**Ethnicity**
Non-Hispanic White	103
Black	0
Hispanic	78
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	82
From 75 to 84	74
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Guillermo Marrero, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	39
Depression	15
Chronic Kidney Disease	28
Asthma	12
Osteoperosis	16
Atrial Fibrilation	16
Heart Failure	15
Chronic Obstructive Pulmonary Disease	10
Diabetes	46
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Guillermo Marrero, MD for Medicare patients.

The highest averages for the top procedures that Dr. Guillermo Marrero, MD treated as an internist in Oviedo, FL were lab tests, preventive care, vaccines and ear procedures.

doctor visit	875
ear procedures	15
lab tests	42
preventive care	37
vaccines	34

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Guillermo Marrero, MD.

**Gender**
Male	95
Female	129

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	112
Hispanic	71
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	71
85 and over	24
Less than 65	19
65 to 74	101

Average of Total of Conditions of Medicare patients treated by Dr. Guillermo Marrero, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Guillermo Marrero, MD treated were high cholesterol, hypertension, ischemic heart disease and diabetes.

Hypertension	68
High Cholesterol	67
Stroke	2
Ischemic Heart Disease	39
Depression	16
Chronic Kidney Disease	26
Asthma	8
Osteoporosis	8
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	35
Atrial Fibrillation	8
Cancer	8
Dementia	8

Education & Training

Dr. Guillermo Marrero, MD graduated from American University of the Caribbean School of Medicine in 1993. He completed residency at Memorial Hospital of Rhode Island. He has a state license in Florida.

Medical School: American University of the Caribbean School of Medicine (1993)

Residency: Memorial Hospital of Rhode Island (1997)

Licensed In: Florida

Ratings & Reviews

Dr. Guillermo Marrero, MD has an average of 2.4 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. Guillermo Marrero, MD from all over the web to help you find the right in Oviedo, FL.

2.4

Overall Rating

(5 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$457 FARXIGA $297	AIRSUPRA $73	BREZTRI $34	ONGLYZA $24	BYDUREON PEN $18	Other $12
Lilly USA, LLC	$413 Effient $112	JARDIANCE $98	TRULICITY $75	BASAGLAR $43	EMGALITY $37	Other $47
GlaxoSmithKline, LLC.	$406 TRELEGY ELLIPTA $152	TANZEUM $133	BREO $39	LEVITRA $36	FLOVENT $24	Other $22
Novo Nordisk Inc	$359 Victoza $138	Ozempic $88	RYBELSUS $68	Tresiba $34	Xultophy 100/3.6 $19	Other $12
Vanda Pharmaceuticals Inc.	$315 Hetlioz $315
Other	$2,018 Vascepa $285	ORENITRAM $125	Kerendia $102	JARDIANCE $83	Repatha $80	Other $1,345

**Types of Payments**
Food and Beverage	$3,936
Education	$32

Biography

Patients gave Dr. Guillermo Marrero an average rating of 2.5 stars (out of 5). He graduated from American University of the Caribbean School of Medicine and then he performed his residency at Memorial Hospital of Rhode Island. Dr. Marrero is conversant in Spanish. His practice in Oviedo, FL is open to new patients as reported by Yext.