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Home > FL Providers > Otolaryngologists / Ear, Nose & Throat (ENT) Doctors

Dr. John Casler, MD

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Specializes in: Otolaryngology (Ear, Nose, and Throat)

4500 San Pablo Road S
Jacksonville, FL 32224

(904) 953-2000

Dr. John Casler, MD is an otolaryngologist in Jacksonville, FL specializing in otolaryngology (ear, nose, and throat).

Office Locations

4500 San Pablo Road S
Jacksonville, FL 32224

(904) 953-2000

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Noteworthy Medicare Patient Procedures Performed by Dr. John Casler, MD in 2023

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

Top 10%

By Volume:

neck surgery

In 2023, Dr. John Casler, MD performed more neck surgery procedures for Medicare patients than 90% of providers in related specialties within Florida.

Top 25%

By Volume:

endocrine surgery

In 2013, Dr. John Casler, MD performed more endocrine surgery procedures for Medicare patients than 75% of providers in related specialties within Florida.

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Casler, MD treated as an otolaryngologist in Jacksonville, FL during 2013 were laryngeal (voice box) procedures, minimally invasive procedures, endocrine surgery and excision.

Volume of procedures performed by Dr. John Casler, MD for Medicare patients.

diagnostic evaluation	39
dissection	24
doctor visit	614
ear procedures	15
endocrine surgery	61
excision	60
laryngeal (voice box) procedures	118
lobectomy	11
lymph node procedures	24
minimally invasive procedures	118
neck surgery	56
removal of lesion (e.g. growth)	36
salivary gland surgery	11
stroboscopy	36

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Casler, MD.

**Gender**
Male	374
Female	304

**Ethnicity**
Non-Hispanic White	604
Black	38
Hispanic	22
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	285
From 75 to 84	233
85 and over	90
Less than 65	70

Conditions of Medicare patients treated by Dr. John Casler, MD in 2013

The most common conditions of Medicare patients that Dr. John Casler, MD treated during 2013 were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	67
High Cholesterol	58
Stroke	5
Ischemic Heart Disease	46
Depression	16
Chronic Kidney Disease	22
Asthma	8
Osteoperosis	10
Atrial Fibrilation	15
Heart Failure	16
Chronic Obstructive Pulmonary Disease	21
Diabetes	27
Dementia	7
Cancer	16

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Casler, MD treated as an otolaryngologist in Jacksonville, FL during 2014 were minimally invasive procedures, laryngeal (voice box) procedures, endocrine surgery and neck surgery.

Volume of procedures performed by Dr. John Casler, MD for Medicare patients.

doctor visit	412
endocrine surgery	30
excision	12
laryngeal (voice box) procedures	120
minimally invasive procedures	120
neck surgery	16
removal of lesion (e.g. growth)	12
stroboscopy	15

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Casler, MD.

**Gender**
Male	239
Female	184

**Ethnicity**
Non-Hispanic White	377
Black	20
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	196
From 75 to 84	130
85 and over	50
Less than 65	47

Conditions of Medicare patients treated by Dr. John Casler, MD in 2014

The most common conditions of Medicare patients that Dr. John Casler, MD treated during 2014 were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	69
High Cholesterol	60
Stroke	5
Ischemic Heart Disease	42
Depression	19
Chronic Kidney Disease	26
Asthma	8
Osteoperosis	10
Atrial Fibrilation	15
Heart Failure	16
Chronic Obstructive Pulmonary Disease	19
Diabetes	29
Dementia	8
Cancer	15

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Casler, MD treated as an otolaryngologist in Jacksonville, FL during 2015 were minimally invasive procedures, laryngeal (voice box) procedures, endocrine surgery and neck surgery.

Volume of procedures performed by Dr. John Casler, MD for Medicare patients.

dissection	12
doctor visit	432
ear procedures	34
endocrine surgery	50
excision	12
laryngeal (voice box) procedures	107
lobectomy	11
lymph node procedures	12
minimally invasive procedures	107
neck surgery	36

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Casler, MD.

**Gender**
Male	428
Female	358

**Ethnicity**
Non-Hispanic White	706
Black	40
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	406
From 75 to 84	208
85 and over	94
Less than 65	78

Conditions of Medicare patients treated by Dr. John Casler, MD in 2015

The most common conditions of Medicare patients that Dr. John Casler, MD treated during 2015 were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	66
High Cholesterol	56
Stroke	6
Ischemic Heart Disease	37
Depression	17
Chronic Kidney Disease	21
Asthma	9
Osteoperosis	8
Atrial Fibrilation	12
Heart Failure	15
Chronic Obstructive Pulmonary Disease	16
Diabetes	26
Dementia	6
Cancer	13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Casler, MD treated as an otolaryngologist in Jacksonville, FL during 2016 were minimally invasive procedures, laryngeal (voice box) procedures, endocrine surgery and ear procedures.

Volume of procedures performed by Dr. John Casler, MD for Medicare patients.

dissection	11
doctor visit	302
ear procedures	34
endocrine surgery	39
excision	11
laryngeal (voice box) procedures	68
lymph node procedures	11
minimally invasive procedures	68
neck surgery	34

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Casler, MD.

**Gender**
Male	168
Female	150

**Ethnicity**
Non-Hispanic White	277
Black	28
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	150
From 75 to 84	92
85 and over	41
Less than 65	35

Conditions of Medicare patients treated by Dr. John Casler, MD in 2016

The most common conditions of Medicare patients that Dr. John Casler, MD treated during 2016 were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	67
High Cholesterol	55
Stroke	7
Ischemic Heart Disease	39
Depression	17
Chronic Kidney Disease	28
Asthma	17
Osteoperosis	7
Atrial Fibrilation	16
Heart Failure	17
Chronic Obstructive Pulmonary Disease	17
Diabetes	25
Dementia	9
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Casler, MD treated as an otolaryngologist in Jacksonville, FL during 2017 were minimally invasive procedures, laryngeal (voice box) procedures, neck surgery and endocrine surgery.

Volume of procedures performed by Dr. John Casler, MD for Medicare patients.

dissection	19
doctor visit	303
ear procedures	20
endocrine surgery	28
excision	19
laryngeal (voice box) procedures	66
lymph node procedures	19
minimally invasive procedures	66
neck surgery	33

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Casler, MD.

**Gender**
Male	163
Female	124

**Ethnicity**
Non-Hispanic White	246
Black	15
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	154
From 75 to 84	81
85 and over	31
Less than 65	21

Conditions of Medicare patients treated by Dr. John Casler, MD in 2017

The most common conditions of Medicare patients that Dr. John Casler, MD treated during 2017 were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	71
High Cholesterol	60
Stroke	7
Ischemic Heart Disease	44
Depression	16
Chronic Kidney Disease	30
Asthma	6
Osteoperosis	10
Atrial Fibrilation	13
Heart Failure	16
Chronic Obstructive Pulmonary Disease	14
Diabetes	23
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Casler, MD treated as an otolaryngologist in Jacksonville, FL during 2018 were minimally invasive procedures, laryngeal (voice box) procedures, endocrine surgery and neck surgery.

Volume of procedures performed by Dr. John Casler, MD for Medicare patients.

dissection	11
doctor visit	216
endocrine surgery	34
excision	11
laryngeal (voice box) procedures	47
lymph node procedures	11
minimally invasive procedures	47
neck surgery	31

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Casler, MD.

**Gender**
Male	121
Female	121

**Ethnicity**
Non-Hispanic White	207
Black	16
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	133
From 75 to 84	67
85 and over	15
Less than 65	27

Conditions of Medicare patients treated by Dr. John Casler, MD in 2018

The most common conditions of Medicare patients that Dr. John Casler, MD treated during 2018 were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	70
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	44
Depression	19
Chronic Kidney Disease	32
Asthma	5
Osteoperosis	11
Atrial Fibrilation	11
Heart Failure	16
Chronic Obstructive Pulmonary Disease	13
Diabetes	27
Dementia	5
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Casler, MD treated as an otolaryngologist in Jacksonville, FL during 2019 were neck surgery, minimally invasive procedures, laryngeal (voice box) procedures and endocrine surgery.

Volume of procedures performed by Dr. John Casler, MD for Medicare patients.

dissection	12
doctor visit	146
endocrine surgery	24
excision	12
laryngeal (voice box) procedures	35
lymph node procedures	12
minimally invasive procedures	35
neck surgery	36

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Casler, MD.

**Gender**
Male	107
Female	100

**Ethnicity**
Non-Hispanic White	182
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	107
From 75 to 84	65
85 and over	12
Less than 65	23

Conditions of Medicare patients treated by Dr. John Casler, MD in 2019

The most common conditions of Medicare patients that Dr. John Casler, MD treated during 2019 were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension	67
High Cholesterol	64
Stroke	6
Ischemic Heart Disease	37
Depression	19
Chronic Kidney Disease	37
Asthma	7
Osteoperosis	8
Atrial Fibrilation	11
Heart Failure	18
Chronic Obstructive Pulmonary Disease	14
Diabetes	27
Dementia	9
Cancer	16

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Casler, MD treated as an otolaryngologist in Jacksonville, FL during 2020 were endocrine surgery, minimally invasive procedures, laryngeal (voice box) procedures and neck surgery.

Volume of procedures performed by Dr. John Casler, MD for Medicare patients.

doctor visit	197
endocrine surgery	64
laryngeal (voice box) procedures	33
lobectomy	19
minimally invasive procedures	33
neck surgery	31

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Casler, MD.

**Gender**
Male	87
Female	115

**Ethnicity**
Non-Hispanic White	174
Black	11
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	106
From 75 to 84	56
85 and over	14
Less than 65	26

Conditions of Medicare patients treated by Dr. John Casler, MD in 2020

The most common conditions of Medicare patients that Dr. John Casler, MD treated during 2020 were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	75
High Cholesterol	72
Stroke	10
Ischemic Heart Disease	46
Depression	28
Chronic Kidney Disease	40
Asthma	7
Osteoperosis	12
Atrial Fibrilation	15
Heart Failure	22
Chronic Obstructive Pulmonary Disease	14
Diabetes	28
Dementia	8
Cancer	16

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Casler, MD treated as an otolaryngologist in Jacksonville, FL during 2021 were neck surgery, endocrine surgery, minimally invasive procedures and laryngeal (voice box) procedures.

Volume of procedures performed by Dr. John Casler, MD for Medicare patients.

dissection	17
doctor visit	143
endocrine surgery	37
excision	17
laryngeal (voice box) procedures	24
lobectomy	16
lymph node procedures	17
minimally invasive procedures	24
neck surgery	38

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Casler, MD.

**Gender**
Male	76
Female	94

**Ethnicity**
Non-Hispanic White	152
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	88
From 75 to 84	55
85 and over	16
Less than 65	11

Conditions of Medicare patients treated by Dr. John Casler, MD in 2021

The most common conditions of Medicare patients that Dr. John Casler, MD treated during 2021 were high cholesterol, hypertension, chronic kidney disease and ischemic heart disease.

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	39
Depression	19
Chronic Kidney Disease	43
Asthma	9
Osteoperosis	12
Atrial Fibrilation	13
Heart Failure	14
Chronic Obstructive Pulmonary Disease	14
Diabetes	32
Dementia	7
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Casler, MD treated as an otolaryngologist in Jacksonville, FL during 2022 were endocrine surgery, neck surgery, lobectomy and minimally invasive procedures.

Volume of procedures performed by Dr. John Casler, MD for Medicare patients.

doctor visit	88
endocrine surgery	33
laryngeal (voice box) procedures	13
lobectomy	16
minimally invasive procedures	13
neck surgery	17

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Casler, MD.

**Gender**
Male	58
Female	79

**Ethnicity**
Non-Hispanic White	121
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	82
From 75 to 84	38
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Casler, MD in 2022

The most common conditions of Medicare patients that Dr. John Casler, MD treated during 2022 were high cholesterol, hypertension, diabetes and chronic kidney disease.

Hypertension	72
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	27
Depression	20
Chronic Kidney Disease	28
Asthma	9
Osteoperosis	21
Atrial Fibrilation	17
Heart Failure	12
Chronic Obstructive Pulmonary Disease	18
Diabetes	31
Dementia	0
Cancer	22

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John Casler, MD treated as an otolaryngologist in Jacksonville, FL during 2023 were neck surgery, endocrine surgery, minimally invasive procedures and laryngeal (voice box) procedures.

Volume of procedures performed by Dr. John Casler, MD for Medicare patients.

dissection	19
doctor visit	125
endocrine surgery	43
excision	19
laryngeal (voice box) procedures	24
lobectomy	16
lymph node procedures	19
minimally invasive procedures	24
neck surgery	46

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John Casler, MD.

**Gender**
Male	79
Female	93

**Ethnicity**
Non-Hispanic White	148
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	55
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Casler, MD in 2023

The most common conditions of Medicare patients that Dr. John Casler, MD treated during 2023 were high cholesterol, hypertension, chronic kidney disease and ischemic heart disease.

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	26
Depression	22
Chronic Kidney Disease	33
Asthma	11
Osteoperosis	20
Atrial Fibrilation	13
Heart Failure	13
Chronic Obstructive Pulmonary Disease	20
Diabetes	25
Dementia	0
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2013 - 2023

Volume of procedures performed by Dr. John Casler, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Casler, MD treated as an otolaryngologist in Jacksonville, FL were minimally invasive procedures, laryngeal (voice box) procedures, endocrine surgery and diagnostic evaluation.

diagnostic evaluation	39
dissection	15
doctor visit	270
ear procedures	25
endocrine surgery	40
excision	19
laryngeal (voice box) procedures	59
lobectomy	14
lymph node procedures	15
minimally invasive procedures	59
neck surgery	34
removal of lesion (e.g. growth)	24
salivary gland surgery	11

Average Medicare Patient Data From 2013 - 2023

Information about Medicare patients treated by Dr. John Casler, MD.

**Gender**
Male	172
Female	156

**Ethnicity**
Black / African American	15
Asian / Pacific Islander	0
Non-Hispanic White	290
Native American / Alaskan Native	0
Hispanic	3
Other	1

**Age**
75 to 84	98
85 and over	33
Less than 65	30
65 to 74	163

Average of Total of Conditions of Medicare patients treated by Dr. John Casler, MD From 2013 - 2023

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

Hypertension	70
High Cholesterol	64
Stroke	5
Ischemic Heart Disease	38
Depression	19
Chronic Kidney Disease	30
Asthma	8
Osteoporosis	11
Heart Failure	15
Chronic Obstructive Pulmonary Disease	16
Diabetes	27
Atrial Fibrillation	13
Cancer	15
Dementia	6

Education & Training

He has a state license in Florida.

Licensed In: Florida

Ratings & Reviews

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General Payments

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

**Payments by Company**
Intuitive Surgical, Inc.	$14,247 Da Vinci Surgical System $14,247
KARL STORZ Endoscopy-America	$134 DRILLCUT-X II SHAVER HANDPIECE $134
Meda Pharmaceuticals, Inc.	$90 Aerospan $90
Smith & Nephew, Inc.	$76 Coblation - Turbinate Wands $76