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Dr. Jon H. Ritter, MD

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Specializes in: Pathology

University of Minnesota Medical School (1988)

Professional interests include: lung transplant, interstitial lung disease

1 Barnes Jewish Hospital Plaza
Saint Louis, MO 63110

(314) 362-5641

Dr. Jon H. Ritter, MD is a pathologist in Saint Louis, MO specializing in pathology. He graduated from University of Minnesota Medical School in 1988 and has 38 years of experience. Dr. Jon H. Ritter, MD is affiliated with Memorial Hospital Belleville, WashU Medicine, Barnes-Jewish West County Hospital, Washington University in St. Louis (WUSTL) and Barnes-Jewish Hospital.

Office Locations

1 Barnes Jewish Hospital Plaza
Saint Louis, MO 63110

(314) 362-5641

(314) 362-0369

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Some issues Dr. Jon H. Ritter, MD can help you with:

Lung Transplant

Patients who have very severe lung disease may need a lung transplant. The diseased lung is entirely removed and replaced with a healthy lung, usually donated by a person who died. Either one or both lungs can be transplanted.

Contrary to popular belief, lung transplant is rarely used to treat lung cancer. It is a more common treatment for patients with other advanced lung diseases, such as cystic fibrosis, sarcoidosis, pulmonary fibrosis, and chronic obstructive pulmonary disease (COPD). Lung transplant is a serious operation and is generally used as a last resort for patients who have only a short time to live without surgery.

During a transplant, an incision is made on the side of the chest (for a single lung) or in the middle (for both lungs). Patients may be hooked up to a heart-lung bypass machine, which will do the work of moving blood and oxygen through the body during the procedure. After the diseased lung is cut away from the main airway and blood vessels, the donor lung is stitched into place. Surgery may take as long as twelve hours, and a hospital stay of two to three weeks after surgery is not uncommon. For the first hours or day after surgery, patients use a ventilator, or a machine to help them breathe. Tubes will be inserted into the chest to help drain excess air and fluid. During recovery, physical therapy and breathing exercises are used to help the new lung work as well as possible.

Lung capacity is carefully monitored for several months after surgery. Patients who have had a transplant will also have to take anti-rejection drugs for the rest of their lives. These drugs stop the body's immune system from attacking the new lung. The main risks after a transplant are infection and rejection (when the immune system attacks the 'foreign' lung). A healthy lifestyle, including maintaining a diet high in vegetables and lean protein, not smoking, and getting enough exercise, is important to keeping the lungs functioning as well as possible. With proper care, many patients can live ten or even twenty years after a lung transplant.

Noteworthy Medicare Patient Procedures Performed by Dr. Jon H. Ritter, MD in 2023

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

Top 25%

By Volume:

intraoperative pathology consultation

In 2012, Dr. Jon H. Ritter, MD performed more intraoperative pathology consultation procedures for Medicare patients than 75% of providers in related specialties within Missouri.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Jon H. Ritter, MD treated as a pathologist in Saint Louis, MO during 2012 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Jon H. Ritter, MD for Medicare patients.

consultation	159
lab tests	159
second opinions	16

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Jon H. Ritter, MD treated as a pathologist in Saint Louis, MO during 2013 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Jon H. Ritter, MD for Medicare patients.

consultation	136
lab tests	183
second opinions	47

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Jon H. Ritter, MD.

**Gender**
Male	233
Female	215

**Ethnicity**
Non-Hispanic White	379
Black	41
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	148
From 75 to 84	74
85 and over	20
Less than 65	206

Conditions of Medicare patients treated by Dr. Jon H. Ritter, MD in 2013

Hypertension	65
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	38
Depression	44
Chronic Kidney Disease	40
Asthma	14
Osteoperosis	9
Atrial Fibrilation	12
Heart Failure	23
Chronic Obstructive Pulmonary Disease	18
Diabetes	34
Dementia	6
Cancer	19

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Jon H. Ritter, MD treated as a pathologist in Saint Louis, MO during 2014 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Jon H. Ritter, MD for Medicare patients.

consultation	113
lab tests	267
second opinions	26

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Jon H. Ritter, MD.

**Gender**
Male	279
Female	339

**Ethnicity**
Non-Hispanic White	495
Black	63
Hispanic	12
Asian	23
Other	12
Native American	13

**Age**
From 65 to 74	212
From 75 to 84	98
85 and over	27
Less than 65	281

Conditions of Medicare patients treated by Dr. Jon H. Ritter, MD in 2014

Hypertension	65
High Cholesterol	45
Stroke	4
Ischemic Heart Disease	33
Depression	42
Chronic Kidney Disease	43
Asthma	11
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	19
Chronic Obstructive Pulmonary Disease	19
Diabetes	34
Dementia	3
Cancer	16

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Jon H. Ritter, MD treated as a pathologist in Saint Louis, MO during 2015 were consultation and lab tests.

Volume of procedures performed by Dr. Jon H. Ritter, MD for Medicare patients.

consultation	422
lab tests	378

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Jon H. Ritter, MD.

**Gender**
Male	828
Female	1148

**Ethnicity**
Non-Hispanic White	1496
Black	416
Hispanic	0
Asian	0
Other	30
Native American	0

**Age**
From 65 to 74	936
From 75 to 84	450
85 and over	102
Less than 65	488

Conditions of Medicare patients treated by Dr. Jon H. Ritter, MD in 2015

Hypertension	75
High Cholesterol	58
Stroke	6
Ischemic Heart Disease	41
Depression	31
Chronic Kidney Disease	40
Asthma	18
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	27
Chronic Obstructive Pulmonary Disease	24
Diabetes	37
Dementia	6
Cancer	37

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Jon H. Ritter, MD treated as a pathologist in Saint Louis, MO during 2016 were lab tests and consultation.

Volume of procedures performed by Dr. Jon H. Ritter, MD for Medicare patients.

consultation	188
lab tests	459

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Jon H. Ritter, MD.

**Gender**
Male	466
Female	574

**Ethnicity**
Non-Hispanic White	787
Black	208
Hispanic	0
Asian	0
Other	23
Native American	0

**Age**
From 65 to 74	496
From 75 to 84	236
85 and over	42
Less than 65	266

Conditions of Medicare patients treated by Dr. Jon H. Ritter, MD in 2016

Hypertension	74
High Cholesterol	56
Stroke	4
Ischemic Heart Disease	36
Depression	32
Chronic Kidney Disease	43
Asthma	25
Osteoperosis	8
Atrial Fibrilation	13
Heart Failure	25
Chronic Obstructive Pulmonary Disease	21
Diabetes	35
Dementia	9
Cancer	38

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Jon H. Ritter, MD treated as a pathologist in Saint Louis, MO during 2017 were lab tests and consultation.

Volume of procedures performed by Dr. Jon H. Ritter, MD for Medicare patients.

consultation	295
lab tests	663

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Jon H. Ritter, MD.

**Gender**
Male	616
Female	739

**Ethnicity**
Non-Hispanic White	1119
Black	193
Hispanic	13
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	641
From 75 to 84	311
85 and over	70
Less than 65	333

Conditions of Medicare patients treated by Dr. Jon H. Ritter, MD in 2017

Hypertension	75
High Cholesterol	54
Stroke	4
Ischemic Heart Disease	40
Depression	34
Chronic Kidney Disease	41
Asthma	9
Osteoperosis	8
Atrial Fibrilation	13
Heart Failure	25
Chronic Obstructive Pulmonary Disease	25
Diabetes	38
Dementia	9
Cancer	30

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Jon H. Ritter, MD treated as a pathologist in Saint Louis, MO during 2018 were lab tests and consultation.

Volume of procedures performed by Dr. Jon H. Ritter, MD for Medicare patients.

consultation	139
lab tests	527

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Jon H. Ritter, MD.

**Gender**
Male	463
Female	531

**Ethnicity**
Non-Hispanic White	828
Black	128
Hispanic	0
Asian	0
Other	20
Native American	0

**Age**
From 65 to 74	464
From 75 to 84	229
85 and over	35
Less than 65	266

Conditions of Medicare patients treated by Dr. Jon H. Ritter, MD in 2018

Hypertension	75
High Cholesterol	59
Stroke	5
Ischemic Heart Disease	48
Depression	33
Chronic Kidney Disease	49
Asthma	10
Osteoperosis	10
Atrial Fibrilation	18
Heart Failure	36
Chronic Obstructive Pulmonary Disease	33
Diabetes	36
Dementia	11
Cancer	38

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Jon H. Ritter, MD treated as a pathologist in Saint Louis, MO during 2019 were lab tests and consultation.

Volume of procedures performed by Dr. Jon H. Ritter, MD for Medicare patients.

consultation	140
lab tests	462

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Jon H. Ritter, MD.

**Gender**
Male	389
Female	432

**Ethnicity**
Non-Hispanic White	682
Black	100
Hispanic	0
Asian	0
Other	25
Native American	0

**Age**
From 65 to 74	414
From 75 to 84	182
85 and over	44
Less than 65	181

Conditions of Medicare patients treated by Dr. Jon H. Ritter, MD in 2019

Hypertension	75
High Cholesterol	62
Stroke	5
Ischemic Heart Disease	46
Depression	33
Chronic Kidney Disease	50
Asthma	9
Osteoperosis	12
Atrial Fibrilation	18
Heart Failure	32
Chronic Obstructive Pulmonary Disease	31
Diabetes	33
Dementia	12
Cancer	39

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Jon H. Ritter, MD treated as a pathologist in Saint Louis, MO during 2020 were lab tests and consultation.

Volume of procedures performed by Dr. Jon H. Ritter, MD for Medicare patients.

consultation	180
lab tests	346

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Jon H. Ritter, MD.

**Gender**
Male	267
Female	370

**Ethnicity**
Non-Hispanic White	539
Black	74
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	343
From 75 to 84	146
85 and over	18
Less than 65	130

Conditions of Medicare patients treated by Dr. Jon H. Ritter, MD in 2020

Hypertension	72
High Cholesterol	58
Stroke	5
Ischemic Heart Disease	42
Depression	33
Chronic Kidney Disease	45
Asthma	10
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	28
Chronic Obstructive Pulmonary Disease	26
Diabetes	32
Dementia	10
Cancer	42

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Jon H. Ritter, MD treated as a pathologist in Saint Louis, MO during 2021 were lab tests and consultation.

Volume of procedures performed by Dr. Jon H. Ritter, MD for Medicare patients.

consultation	101
lab tests	262

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Jon H. Ritter, MD.

**Gender**
Male	285
Female	420

**Ethnicity**
Non-Hispanic White	575
Black	98
Hispanic	0
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	380
From 75 to 84	155
85 and over	18
Less than 65	152

Conditions of Medicare patients treated by Dr. Jon H. Ritter, MD in 2021

Hypertension	73
High Cholesterol	65
Stroke	4
Ischemic Heart Disease	39
Depression	33
Chronic Kidney Disease	44
Asthma	10
Osteoperosis	12
Atrial Fibrilation	16
Heart Failure	26
Chronic Obstructive Pulmonary Disease	22
Diabetes	32
Dementia	10
Cancer	36

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Jon H. Ritter, MD treated as a pathologist in Saint Louis, MO during 2022 were lab tests and consultation.

Volume of procedures performed by Dr. Jon H. Ritter, MD for Medicare patients.

consultation	109
lab tests	257

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Jon H. Ritter, MD.

**Gender**
Male	254
Female	361

**Ethnicity**
Non-Hispanic White	517
Black	69
Hispanic	0
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	323
From 75 to 84	152
85 and over	28
Less than 65	112

Conditions of Medicare patients treated by Dr. Jon H. Ritter, MD in 2022

Hypertension	75
High Cholesterol	72
Stroke	9
Ischemic Heart Disease	34
Depression	29
Chronic Kidney Disease	30
Asthma	12
Osteoperosis	19
Atrial Fibrilation	25
Heart Failure	25
Chronic Obstructive Pulmonary Disease	29
Diabetes	33
Dementia	6
Cancer	43

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Jon H. Ritter, MD for Medicare patients.

The highest averages for the top procedures that Dr. Jon H. Ritter, MD treated as a pathologist in Saint Louis, MO were lab tests, consultation and second opinions.

consultation	180
lab tests	360
second opinions	29

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Jon H. Ritter, MD.

**Gender**
Male	370
Female	466

**Ethnicity**
Black / African American	126
Asian / Pacific Islander	2
Non-Hispanic White	674
Native American / Alaskan Native	1
Hispanic	2
Other	14

**Age**
75 to 84	184
85 and over	36
Less than 65	219
65 to 74	396

Average of Total of Conditions of Medicare patients treated by Dr. Jon H. Ritter, MD From 2012 - 2022

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

Hypertension	65
High Cholesterol	52
Stroke	4
Ischemic Heart Disease	36
Depression	31
Chronic Kidney Disease	38
Asthma	11
Osteoporosis	9
Heart Failure	24
Chronic Obstructive Pulmonary Disease	22
Diabetes	31
Atrial Fibrillation	13
Dementia	7
Cancer	30

Education & Training

Dr. Jon H. Ritter, MD graduated from University of Minnesota Medical School in 1988. He is certified by the Anatomic Pathology and has a state license in Missouri.

Medical School: University of Minnesota Medical School (1988)

Board Certification: Anatomic Pathology

Licensed In: Missouri

Affiliations & Hospitals

Dr. Jon H. Ritter, MD is associated with these hospitals and organizations:

Memorial Hospital Belleville

WashU Medicine

Barnes-Jewish West County Hospital

Washington University in St. Louis (WUSTL)

Barnes-Jewish Hospital

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General Payments

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

**Payments by Company**
Roche Diagnostics Corporation	$10,862 TD BenchMark IHC/ISH and Special Stains Reagents $5,045	TD BenchMark Platforms $3,201	$2,616
GENZYME CORPORATION	$5,301 $5,301
Ventana Medical Systems, Inc.	$1,084 RTD Primary Staining Instrument or Assays $1,084
Merck Sharp & Dohme Corporation	$242 KEYTRUDA $242
Genentech USA, Inc.	$219 Perjeta $10	$209
Other	$308 Non-Covered Product $116	Healthcare Incubator $45	Gilotrif $36	CYRAMZA $27	Proleukin $25	Other $59

**Types of Payments**
Consulting Fee	$12,819
Travel and Lodging	$3,035
Food and Beverage	$2,162

Biography

Dr. Jon Ritter is a specialist in pathology. He works in Saint Louis, MO. His clinical interests include lung transplant and interstitial lung disease. Dr. Ritter is professionally affiliated with Barnes-Jewish West County Hospital, WashU Medicine, and Memorial Hospital Belleville. He attended medical school at the University of Minnesota Medical School.