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Dr. Leonard M. Hoffmann, MD

Accepting New Patients

(Leonard Hoffmann, MD)

(50 Ratings)

Specializes in: Family Medicine, Adult Allergy & Immunology and Endocrinology Diabetes & Metabolism

Loyola University Chicago, Stritch School of Medicine

Professional interests include: hypertension (high blood pressure), asthma, diabetes management, and more.

1101 Highway K
O'Fallon, MO 63366

(636) 379-6363

Dr. Leonard M. Hoffmann, MD is a family medicine practitioner in O'Fallon, MO specializing in family medicine, adult allergy & immunology and endocrinology diabetes & metabolism. He graduated from Loyola University Chicago, Stritch School of Medicine. Dr. Leonard M. Hoffmann, MD is affiliated with SSM Health DePaul Hospital, SSM Health, SSM Health St. Mary's Hospital - St. Louis, SSM Health St. Joseph Hospital - Lake Saint Louis, SSM Health St. Joseph Hospital - St. Charles and SSM Health St. Clare Hospital - Fenton.

Office Locations

1101 Highway K
O'Fallon, MO 63366

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1101 Highway K
O'Fallon, MO 63366

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Some issues Dr. Leonard M. Hoffmann, MD can help you with:

Asthma

Asthma is a chronic lung disease where the tissue and airways of the lungs become extremely sensitive to certain substances. When these substances are breathed in, the lungs become inflamed. The muscles around the airways tighten and squeeze the lungs, and passages within the lungs swell and tighten. The airways themselves produce mucus, which further clogs the tightened, swollen airways. A person having an asthma attack finds it very difficult to breathe, and a severe attack can even be fatal.

Asthma affects people of all ages, but people with asthma are most often diagnosed as children. Symptoms can include wheezing, a tight feeling in the chest, shortness of breath, and coughing. Some people have mild symptoms all the time, and some people have no symptoms at all, but everyone with asthma is susceptible to occasional severe attacks or flare-ups of symptoms when they are exposed to triggers. Triggers vary widely but can include:

Allergens (dust mites, pet fur, mold, pollen, grass)
Irritants (smoke, pollution, dust, chemicals)
Viral infections
Physical activity, especially outdoors
Certain medications or chemicals in foods (aspirin, sulfites)

Treatment for most asthma patients involves three steps. Patients learn what their asthma triggers are and avoid them. They take a daily control medication, usually an inhaled corticosteroid, to reduce inflammation in the lungs. Also, they have rescue medication with them at all times to take in case of a severe attack. These quick-acting inhaled medications relax the muscles around the airways and allow the lungs to open up for air.

There is no cure for asthma, but with treatment it should not interfere with daily life and activities.

Noteworthy Medicare Patient Procedures Performed by Dr. Leonard M. Hoffmann, MD in 2023

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

Top 5%

By Volume:

Welcome to Medicare visit

In 2023, Dr. Leonard M. Hoffmann, MD performed more Welcome to Medicare visit (initial preventive physical exam) procedures for Medicare patients than 95% of providers in related specialties within Missouri.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Leonard M. Hoffmann, MD treated as a family medicine practitioner in O'Fallon, MO during 2012 were hospital care, inpatient care, preventive care and vaccines.

Volume of procedures performed by Dr. Leonard M. Hoffmann, MD for Medicare patients.

doctor visit	1123
hospital care	215
inpatient care	203
lab tests	42
musculoskeletal imaging	19
outpatient care	12
preventive care	163
thoracic (chest) imaging	44
vaccines	163
X-rays	63

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Leonard M. Hoffmann, MD treated as a family medicine practitioner in O'Fallon, MO during 2013 were hospital care, inpatient care, preventive care and vaccines.

Volume of procedures performed by Dr. Leonard M. Hoffmann, MD for Medicare patients.

doctor visit	1119
hospital care	177
inpatient care	177
lab tests	38
musculoskeletal imaging	15
preventive care	140
thoracic (chest) imaging	36
vaccines	140
X-rays	51

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard M. Hoffmann, MD.

**Gender**
Male	185
Female	230

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

**Age**
From 65 to 74	171
From 75 to 84	104
85 and over	78
Less than 65	62

Conditions of Medicare patients treated by Dr. Leonard M. Hoffmann, MD in 2013

Hypertension	73
High Cholesterol	60
Stroke	7
Ischemic Heart Disease	26
Depression	27
Chronic Kidney Disease	29
Asthma	3
Osteoperosis	7
Atrial Fibrilation	12
Heart Failure	19
Chronic Obstructive Pulmonary Disease	17
Diabetes	29
Dementia	24
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Leonard M. Hoffmann, MD treated as a family medicine practitioner in O'Fallon, MO during 2014 were hospital care, inpatient care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. Leonard M. Hoffmann, MD for Medicare patients.

doctor visit	907
hospital care	121
inpatient care	121
thoracic (chest) imaging	42
X-rays	42

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard M. Hoffmann, MD.

**Gender**
Male	190
Female	224

**Ethnicity**
Non-Hispanic White	392
Black	11
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	173
From 75 to 84	111
85 and over	76
Less than 65	54

Conditions of Medicare patients treated by Dr. Leonard M. Hoffmann, MD in 2014

Hypertension	75
High Cholesterol	61
Stroke	6
Ischemic Heart Disease	25
Depression	26
Chronic Kidney Disease	32
Asthma	3
Osteoperosis	7
Atrial Fibrilation	14
Heart Failure	15
Chronic Obstructive Pulmonary Disease	17
Diabetes	29
Dementia	23
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Leonard M. Hoffmann, MD treated as a family medicine practitioner in O'Fallon, MO during 2015 were hospital care, inpatient care, X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. Leonard M. Hoffmann, MD for Medicare patients.

aspiration	17
doctor visit	800
hospital care	134
injections	17
inpatient care	134
thoracic (chest) imaging	20
X-rays	20

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard M. Hoffmann, MD.

**Gender**
Male	338
Female	406

**Ethnicity**
Non-Hispanic White	696
Black	26
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	304
From 75 to 84	196
85 and over	152
Less than 65	92

Conditions of Medicare patients treated by Dr. Leonard M. Hoffmann, MD in 2015

Hypertension	73
High Cholesterol	59
Stroke	8
Ischemic Heart Disease	29
Depression	27
Chronic Kidney Disease	32
Asthma	7
Osteoperosis	6
Atrial Fibrilation	13
Heart Failure	15
Chronic Obstructive Pulmonary Disease	12
Diabetes	27
Dementia	22
Cancer	13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Leonard M. Hoffmann, MD treated as a family medicine practitioner in O'Fallon, MO during 2016 were X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. Leonard M. Hoffmann, MD for Medicare patients.

doctor visit	751
thoracic (chest) imaging	35
X-rays	35

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard M. Hoffmann, MD.

**Gender**
Male	177
Female	182

**Ethnicity**
Non-Hispanic White	332
Black	13
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	171
From 75 to 84	93
85 and over	49
Less than 65	46

Conditions of Medicare patients treated by Dr. Leonard M. Hoffmann, MD in 2016

Hypertension	70
High Cholesterol	53
Stroke	3
Ischemic Heart Disease	26
Depression	21
Chronic Kidney Disease	33
Asthma	13
Osteoperosis	4
Atrial Fibrilation	10
Heart Failure	14
Chronic Obstructive Pulmonary Disease	11
Diabetes	26
Dementia	18
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Leonard M. Hoffmann, MD treated as a family medicine practitioner in O'Fallon, MO during 2017 were X-rays and thoracic (chest) imaging.

Volume of procedures performed by Dr. Leonard M. Hoffmann, MD for Medicare patients.

doctor visit	816
thoracic (chest) imaging	25
X-rays	25

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard M. Hoffmann, MD.

**Gender**
Male	199
Female	187

**Ethnicity**
Non-Hispanic White	361
Black	13
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	193
From 75 to 84	102
85 and over	41
Less than 65	50

Conditions of Medicare patients treated by Dr. Leonard M. Hoffmann, MD in 2017

Hypertension	67
High Cholesterol	44
Stroke	0
Ischemic Heart Disease	26
Depression	22
Chronic Kidney Disease	36
Asthma	3
Osteoperosis	4
Atrial Fibrilation	10
Heart Failure	17
Chronic Obstructive Pulmonary Disease	15
Diabetes	29
Dementia	18
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Leonard M. Hoffmann, MD for Medicare patients.

doctor visit	805

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard M. Hoffmann, MD.

**Gender**
Male	191
Female	181

**Ethnicity**
Non-Hispanic White	348
Black	13
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	184
From 75 to 84	113
85 and over	34
Less than 65	41

Conditions of Medicare patients treated by Dr. Leonard M. Hoffmann, MD in 2018

Hypertension	68
High Cholesterol	59
Stroke	4
Ischemic Heart Disease	24
Depression	24
Chronic Kidney Disease	32
Asthma	4
Osteoperosis	5
Atrial Fibrilation	11
Heart Failure	18
Chronic Obstructive Pulmonary Disease	14
Diabetes	28
Dementia	16
Cancer	13

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Leonard M. Hoffmann, MD treated as a family medicine practitioner in O'Fallon, MO during 2019 were aspiration and injections.

Volume of procedures performed by Dr. Leonard M. Hoffmann, MD for Medicare patients.

aspiration	16
doctor visit	840
injections	16

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard M. Hoffmann, MD.

**Gender**
Male	206
Female	168

**Ethnicity**
Non-Hispanic White	350
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	178
From 75 to 84	115
85 and over	38
Less than 65	43

Conditions of Medicare patients treated by Dr. Leonard M. Hoffmann, MD in 2019

Hypertension	67
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	24
Depression	20
Chronic Kidney Disease	32
Asthma	0
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	14
Chronic Obstructive Pulmonary Disease	14
Diabetes	29
Dementia	13
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Leonard M. Hoffmann, MD for Medicare patients.

doctor visit	531

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard M. Hoffmann, MD.

**Gender**
Male	196
Female	163

**Ethnicity**
Non-Hispanic White	336
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	182
From 75 to 84	95
85 and over	40
Less than 65	42

Conditions of Medicare patients treated by Dr. Leonard M. Hoffmann, MD in 2020

Hypertension	68
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	25
Depression	21
Chronic Kidney Disease	32
Asthma	5
Osteoperosis	4
Atrial Fibrilation	8
Heart Failure	14
Chronic Obstructive Pulmonary Disease	14
Diabetes	27
Dementia	12
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Leonard M. Hoffmann, MD treated as a family medicine practitioner in O'Fallon, MO during 2021 were preventive care.

Volume of procedures performed by Dr. Leonard M. Hoffmann, MD for Medicare patients.

doctor visit	644
preventive care	16

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard M. Hoffmann, MD.

**Gender**
Male	199
Female	158

**Ethnicity**
Non-Hispanic White	334
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	174
From 75 to 84	104
85 and over	46
Less than 65	33

Conditions of Medicare patients treated by Dr. Leonard M. Hoffmann, MD in 2021

Hypertension	71
High Cholesterol	61
Stroke	0
Ischemic Heart Disease	26
Depression	18
Chronic Kidney Disease	37
Asthma	0
Osteoperosis	3
Atrial Fibrilation	10
Heart Failure	15
Chronic Obstructive Pulmonary Disease	13
Diabetes	29
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Leonard M. Hoffmann, MD treated as a family medicine practitioner in O'Fallon, MO during 2022 were preventive care.

Volume of procedures performed by Dr. Leonard M. Hoffmann, MD for Medicare patients.

doctor visit	601
preventive care	12

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Leonard M. Hoffmann, MD.

**Gender**
Male	191
Female	150

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

**Age**
From 65 to 74	165
From 75 to 84	108
85 and over	42
Less than 65	26

Conditions of Medicare patients treated by Dr. Leonard M. Hoffmann, MD in 2022

Hypertension	74
High Cholesterol	75
Stroke	4
Ischemic Heart Disease	21
Depression	17
Chronic Kidney Disease	30
Asthma	7
Osteoperosis	6
Atrial Fibrilation	14
Heart Failure	12
Chronic Obstructive Pulmonary Disease	14
Diabetes	30
Dementia	6
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Leonard M. Hoffmann, MD for Medicare patients.

The highest averages for the top procedures that Dr. Leonard M. Hoffmann, MD treated as a family medicine practitioner in O'Fallon, MO were hospital care, inpatient care, vaccines and preventive care.

aspiration	16
doctor visit	812
hospital care	161
injections	16
inpatient care	158
lab tests	40
musculoskeletal imaging	17
outpatient care	12
preventive care	82
thoracic (chest) imaging	33
vaccines	151
X-rays	39

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Leonard M. Hoffmann, MD.

**Gender**
Male	188
Female	186

**Ethnicity**
Black / African American	6
Asian / Pacific Islander	0
Non-Hispanic White	350
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	103
85 and over	54
Less than 65	44
65 to 74	172

Average of Total of Conditions of Medicare patients treated by Dr. Leonard M. Hoffmann, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Leonard M. Hoffmann, MD treated were hypertension, high cholesterol, chronic kidney disease and diabetes.

Hypertension	64
High Cholesterol	52
Stroke	2
Ischemic Heart Disease	22
Depression	20
Chronic Kidney Disease	29
Asthma	4
Osteoporosis	4
Heart Failure	13
Chronic Obstructive Pulmonary Disease	12
Diabetes	25
Atrial Fibrillation	10
Dementia	14
Cancer	12

Education & Training

Dr. Leonard M. Hoffmann, MD graduated from Loyola University Chicago, Stritch School of Medicine. He completed residency at Forest Park Hospital. He is certified by the American Board of Family Medicine Drug Enforcement Administration Missouri Dept of Health/Narcotics&Dangerous Drugs Missouri State Board of Registration and has a state license in Missouri.

Medical School: Loyola University Chicago, Stritch School of Medicine

Residency: Forest Park Hospital

Board Certification: American Board of Family Medicine Drug Enforcement Administration Missouri Dept of Health/Narcotics&Dangerous Drugs Missouri State Board of Registration

Licensed In: Missouri

Affiliations & Hospitals

Dr. Leonard M. Hoffmann, MD is associated with these hospitals and organizations:

SSM Health DePaul Hospital

SSM Health

SSM Health St. Mary's Hospital - St. Louis

SSM Health St. Joseph Hospital - Lake Saint Louis

SSM Health St. Joseph Hospital - St. Charles

SSM Health St. Clare Hospital - Fenton

Ratings & Reviews

Dr. Leonard M. Hoffmann, MD has an exceptional overall rating with an average of 4.94 out of 5 stars based on 50 ratings. We collect ratings and reviews of Dr. Leonard M. Hoffmann, MD from all over the web to help you find the right in O'Fallon, MO.

4.94

Overall Rating

(50 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
Boehringer Ingelheim Pharmaceuticals, Inc.	$182 JARDIANCE $182
GlaxoSmithKline, LLC.	$97 TRELEGY ELLIPTA $97
Lilly USA, LLC	$35 $35
Jazz Pharmaceuticals Inc.	$24 SUNOSI $24
Amgen Inc.	$16 Repatha $16

**Types of Payments**
Food and Beverage	$319
Education	$35

Biography

Dr. Leonard Hoffmann's medical specialty is endocrinology, family medicine, and adult allergy & immunology. Patient ratings for Dr. Hoffmann average 5.0 stars (out of 5). His clinical interests include primary care, diabetes management, and hypertension (high blood pressure). Dr. Hoffmann is professionally affiliated with SSM Health DePaul Hospital, SSM Health St. Clare Hospital - Fenton, and SSM Health St. Joseph Hospital - St. Charles. According to Yext, he is currently accepting new patients at his office in O'Fallon, MO. He attended medical school at Loyola University Chicago, Stritch School of Medicine. Dr. Hoffmann completed his residency training at Forest Park Hospital.