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Dr. Leland C. Lenahan III, MD

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Specializes in: Emergency Medicine

6300 Main Street
Zachary, LA 70791

(225) 658-4335

Dr. Leland C. Lenahan III, MD is an emergency medicine doctor in Evergreen Park, IL specializing in emergency medicine.

Office Locations

2800 W 95th Street
Evergreen Park, IL 60805

(708) 422-4221

(708) 422-4415

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6300 Main Street
Zachary, LA 70791

(225) 658-4335

(225) 654-6703

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Noteworthy Medicare Patient Procedures Performed by Dr. Leland C. Lenahan III, MD in 2024

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

Top 25%

By Volume:

emergency room care

In 2012, Dr. Leland C. Lenahan III, MD performed more emergency room (ER) care procedures for Medicare patients than 75% of providers in related specialties within Illinois.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL during 2012 were emergency care and tracheal (windpipe) procedures.

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

emergency care	1214
tracheal (windpipe) procedures	14

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL during 2013 were emergency care.

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

emergency care	909

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Leland C. Lenahan III, MD.

**Gender**
Male	349
Female	523

**Ethnicity**
Non-Hispanic White	578
Black	269
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	241
From 75 to 84	213
85 and over	134
Less than 65	284

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2013

Hypertension	75
High Cholesterol	60
Stroke	12
Ischemic Heart Disease	53
Depression	35
Chronic Kidney Disease	39
Asthma	12
Osteoperosis	12
Atrial Fibrilation	18
Heart Failure	35
Chronic Obstructive Pulmonary Disease	32
Diabetes	42
Dementia	21
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL during 2014 were emergency care.

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

emergency care	1326

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Leland C. Lenahan III, MD.

**Gender**
Male	567
Female	722

**Ethnicity**
Non-Hispanic White	896
Black	356
Hispanic	11
Asian	0
Other	0
Native American	12

**Age**
From 65 to 74	375
From 75 to 84	306
85 and over	146
Less than 65	462

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2014

Hypertension	75
High Cholesterol	59
Stroke	14
Ischemic Heart Disease	61
Depression	37
Chronic Kidney Disease	35
Asthma	14
Osteoperosis	10
Atrial Fibrilation	17
Heart Failure	40
Chronic Obstructive Pulmonary Disease	35
Diabetes	45
Dementia	21
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL during 2015 were emergency care.

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

emergency care	1303

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Leland C. Lenahan III, MD.

**Gender**
Male	1116
Female	1608

**Ethnicity**
Non-Hispanic White	1784
Black	872
Hispanic	0
Asian	0
Other	26
Native American	0

**Age**
From 65 to 74	788
From 75 to 84	670
85 and over	376
Less than 65	890

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2015

Hypertension	75
High Cholesterol	56
Stroke	13
Ischemic Heart Disease	58
Depression	40
Chronic Kidney Disease	40
Asthma	24
Osteoperosis	9
Atrial Fibrilation	17
Heart Failure	36
Chronic Obstructive Pulmonary Disease	31
Diabetes	42
Dementia	26
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL during 2016 were emergency care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

emergency care	1195
thoracic (chest) imaging	18
X-rays	18

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Leland C. Lenahan III, MD.

**Gender**
Male	537
Female	773

**Ethnicity**
Non-Hispanic White	837
Black	432
Hispanic	22
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	391
From 75 to 84	315
85 and over	176
Less than 65	428

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2016

Hypertension	75
High Cholesterol	60
Stroke	12
Ischemic Heart Disease	59
Depression	39
Chronic Kidney Disease	46
Asthma	36
Osteoperosis	9
Atrial Fibrilation	16
Heart Failure	38
Chronic Obstructive Pulmonary Disease	35
Diabetes	44
Dementia	27
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL during 2017 were emergency care.

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

emergency care	1322

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Leland C. Lenahan III, MD.

**Gender**
Male	521
Female	703

**Ethnicity**
Non-Hispanic White	750
Black	420
Hispanic	35
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	375
From 75 to 84	305
85 and over	158
Less than 65	386

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2017

Hypertension	75
High Cholesterol	60
Stroke	10
Ischemic Heart Disease	55
Depression	35
Chronic Kidney Disease	49
Asthma	10
Osteoperosis	7
Atrial Fibrilation	18
Heart Failure	39
Chronic Obstructive Pulmonary Disease	33
Diabetes	48
Dementia	24
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL during 2018 were emergency care.

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

emergency care	828

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Leland C. Lenahan III, MD.

**Gender**
Male	326
Female	442

**Ethnicity**
Non-Hispanic White	609
Black	139
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	244
From 75 to 84	201
85 and over	113
Less than 65	210

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2018

Hypertension	75
High Cholesterol	69
Stroke	13
Ischemic Heart Disease	55
Depression	42
Chronic Kidney Disease	50
Asthma	7
Osteoperosis	8
Atrial Fibrilation	18
Heart Failure	44
Chronic Obstructive Pulmonary Disease	40
Diabetes	46
Dementia	27
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL during 2019 were emergency care.

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

emergency care	688

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Leland C. Lenahan III, MD.

**Gender**
Male	293
Female	376

**Ethnicity**
Non-Hispanic White	529
Black	124
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	224
From 75 to 84	177
85 and over	80
Less than 65	188

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2019

Hypertension	75
High Cholesterol	64
Stroke	12
Ischemic Heart Disease	57
Depression	41
Chronic Kidney Disease	51
Asthma	10
Osteoperosis	8
Atrial Fibrilation	17
Heart Failure	43
Chronic Obstructive Pulmonary Disease	38
Diabetes	45
Dementia	25
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL during 2020 were emergency care.

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

emergency care	602

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Leland C. Lenahan III, MD.

**Gender**
Male	264
Female	294

**Ethnicity**
Non-Hispanic White	395
Black	149
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	178
From 75 to 84	156
85 and over	91
Less than 65	133

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2020

Hypertension	75
High Cholesterol	66
Stroke	11
Ischemic Heart Disease	53
Depression	39
Chronic Kidney Disease	54
Asthma	10
Osteoperosis	10
Atrial Fibrilation	17
Heart Failure	39
Chronic Obstructive Pulmonary Disease	32
Diabetes	46
Dementia	29
Cancer	8

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL during 2021 were emergency care.

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

emergency care	511

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Leland C. Lenahan III, MD.

**Gender**
Male	207
Female	257

**Ethnicity**
Non-Hispanic White	280
Black	173
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	153
From 75 to 84	125
85 and over	71
Less than 65	115

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2021

Hypertension	75
High Cholesterol	67
Stroke	13
Ischemic Heart Disease	52
Depression	37
Chronic Kidney Disease	52
Asthma	10
Osteoperosis	11
Atrial Fibrilation	16
Heart Failure	37
Chronic Obstructive Pulmonary Disease	23
Diabetes	44
Dementia	30
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL during 2022 were emergency care.

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

emergency care	608

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Leland C. Lenahan III, MD.

**Gender**
Male	238
Female	344

**Ethnicity**
Non-Hispanic White	386
Black	169
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	197
From 75 to 84	181
85 and over	100
Less than 65	104

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	19
Ischemic Heart Disease	43
Depression	41
Chronic Kidney Disease	37
Asthma	14
Osteoperosis	13
Atrial Fibrilation	28
Heart Failure	35
Chronic Obstructive Pulmonary Disease	27
Diabetes	41
Dementia	22
Cancer	17

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL during 2023 were emergency care.

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

emergency care	495

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Leland C. Lenahan III, MD.

**Gender**
Male	217
Female	294

**Ethnicity**
Non-Hispanic White	357
Black	135
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	176
From 75 to 84	174
85 and over	87
Less than 65	74

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	17
Ischemic Heart Disease	48
Depression	34
Chronic Kidney Disease	38
Asthma	14
Osteoperosis	16
Atrial Fibrilation	31
Heart Failure	35
Chronic Obstructive Pulmonary Disease	25
Diabetes	48
Dementia	18
Cancer	16

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL during 2024 were emergency care.

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

emergency care	507

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Leland C. Lenahan III, MD.

**Gender**
Male	203
Female	323

**Ethnicity**
Non-Hispanic White	383
Black	119
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	170
From 75 to 84	171
85 and over	113
Less than 65	72

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	43
Depression	36
Chronic Kidney Disease	36
Asthma	11
Osteoperosis	18
Atrial Fibrilation	32
Heart Failure	33
Chronic Obstructive Pulmonary Disease	32
Diabetes	44
Dementia	21
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Leland C. Lenahan III, MD for Medicare patients.

The highest averages for the top procedures that Dr. Leland C. Lenahan III, MD treated as an emergency medicine doctor in Evergreen Park, IL were emergency care, X-rays, thoracic (chest) imaging and tracheal (windpipe) procedures.

emergency care	885
thoracic (chest) imaging	18
tracheal (windpipe) procedures	14
X-rays	18

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Leland C. Lenahan III, MD.

**Gender**
Male	372
Female	512

**Ethnicity**
Black / African American	258
Asian / Pacific Islander	0
Non-Hispanic White	598
Hispanic	8
Native American / Alaskan Native	0
Other	2

**Age**
75 to 84	230
85 and over	126
Less than 65	257
65 to 74	270

Average of Total of Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD From 2012 - 2024

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

Hypertension	69
High Cholesterol	60
Stroke	12
Ischemic Heart Disease	49
Depression	35
Chronic Kidney Disease	40
Asthma	13
Osteoporosis	10
Heart Failure	34
Chronic Obstructive Pulmonary Disease	29
Diabetes	41
Atrial Fibrillation	18
Cancer	10
Dementia	22

Education & Training

He has a state license in Louisiana.

Licensed In: Louisiana

Ratings & Reviews

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General Payments

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

**Payments by Company**
The Medicines Company	$39 ORBACTIV $39
Valeant Pharmaceuticals North America LLC	$12 Relistor $12

**Types of Payments**
Food and Beverage	$51

Biography

Dr. Leland Lenahan works as an emergency medicine. Dr. Lenahan graduated from Louisiana State University School of Medicine in New Orleans.

Select Year:

Dr. Leland C. Lenahan III, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Leland C. Lenahan III, MD in 2024

By Volume:

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. Leland C. Lenahan III, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2023

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

2024 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD in 2024

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Average Medicare Patient Data From 2012 - 2024

Average of Total of Conditions of Medicare patients treated by Dr. Leland C. Lenahan III, MD From 2012 - 2024

Education & Training

Ratings & Reviews

General Payments

Biography

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