Procedure Volume Patient Data Patient Conditions Reviews General Payments Back to Top

Home > MO Providers > Radiation Oncologists

Dr. Timothy R. O'Leary, MD

(No ratings)

Specializes in: Radiation Oncology

Loyola University Chicago, Stritch School of Medicine

11475olde Cabin Road Suite 200
Saint Louis, MO 63141

(314) 991-8200

Dr. Timothy R. O'Leary, MD is a radiation oncologist in Saint Louis, MO specializing in radiation oncology. He graduated from Loyola University Chicago, Stritch School of Medicine. Dr. Timothy R. O'Leary, MD is affiliated with Anderson Hospital, Mercy Hospital South, Mercy Hospital Jefferson, Mercy Health System, Mercy Hospital Washington, Mercy Hospital St. Louis and Anderson Hospital (Maryville, IL).

Office Locations

Anderson Hospital (Maryville, IL)

11475olde Cabin Road Suite 200
Saint Louis, MO 63141

(314) 991-8200

open_in_new

Mercy Hospital St. Louis

1350 Us Highway 61
Festus, MO 63028

(636) 933-0303

(636) 931-4818

open_in_new

In The News

“The news was devastating for his mother, Kelly O'Leary, a longtime volunteer with the St. Louis Metropolitan Medical Society Alliance, and her husband Timothy O'Leary, MD, a radiation oncologist at...”—"Physician spouse speaks out against dangers of prescription opioids", KevinMD, July 2017

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Timothy R. O'Leary, MD treated as a radiation oncologist in Saint Louis, MO during 2012 were radiation therapy, hospital care and inpatient care.

Volume of procedures performed by Dr. Timothy R. O'Leary, MD for Medicare patients.

doctor visit	1192
hospital care	16
inpatient care	16
radiation therapy	2637

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Timothy R. O'Leary, MD treated as a radiation oncologist in Saint Louis, MO during 2013 were radiation therapy, hospital care and inpatient care.

Volume of procedures performed by Dr. Timothy R. O'Leary, MD for Medicare patients.

doctor visit	1154
hospital care	12
inpatient care	12
radiation therapy	2791

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy R. O'Leary, MD.

**Gender**
Male	268
Female	238

**Age**
From 65 to 74	253
From 75 to 84	166
85 and over	37
Less than 65	50

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2013

Hypertension	73
High Cholesterol	61
Stroke	5
Ischemic Heart Disease	43
Depression	21
Chronic Kidney Disease	21
Asthma	6
Osteoperosis	5
Atrial Fibrilation	11
Heart Failure	27
Chronic Obstructive Pulmonary Disease	25
Diabetes	30
Dementia	7
Cancer	75

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Timothy R. O'Leary, MD treated as a radiation oncologist in Saint Louis, MO during 2014 were radiation therapy.

Volume of procedures performed by Dr. Timothy R. O'Leary, MD for Medicare patients.

doctor visit	937
radiation therapy	2033

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy R. O'Leary, MD.

**Gender**
Male	252
Female	202

**Age**
From 65 to 74	208
From 75 to 84	162
85 and over	35
Less than 65	49

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2014

Hypertension	71
High Cholesterol	59
Stroke	4
Ischemic Heart Disease	42
Depression	22
Chronic Kidney Disease	22
Asthma	7
Osteoperosis	6
Atrial Fibrilation	13
Heart Failure	25
Chronic Obstructive Pulmonary Disease	25
Diabetes	31
Dementia	6
Cancer	75

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Timothy R. O'Leary, MD treated as a radiation oncologist in Saint Louis, MO during 2015 were radiation therapy.

Volume of procedures performed by Dr. Timothy R. O'Leary, MD for Medicare patients.

doctor visit	972
radiation therapy	1141

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy R. O'Leary, MD.

**Gender**
Male	548
Female	400

**Age**
From 65 to 74	428
From 75 to 84	340
85 and over	66
Less than 65	114

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2015

Hypertension	72
High Cholesterol	64
Stroke	4
Ischemic Heart Disease	42
Depression	22
Chronic Kidney Disease	29
Asthma	13
Osteoperosis	4
Atrial Fibrilation	13
Heart Failure	25
Chronic Obstructive Pulmonary Disease	22
Diabetes	31
Dementia	6
Cancer	75

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Timothy R. O'Leary, MD treated as a radiation oncologist in Saint Louis, MO during 2016 were radiation therapy and marker placement for prostate radiation therapy.

Volume of procedures performed by Dr. Timothy R. O'Leary, MD for Medicare patients.

doctor visit	875
marker placement for prostate radiation therapy	17
radiation therapy	1010

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy R. O'Leary, MD.

**Gender**
Male	261
Female	187

**Age**
From 65 to 74	204
From 75 to 84	163
85 and over	32
Less than 65	49

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2016

Hypertension	72
High Cholesterol	64
Stroke	5
Ischemic Heart Disease	42
Depression	21
Chronic Kidney Disease	38
Asthma	21
Osteoperosis	5
Atrial Fibrilation	14
Heart Failure	24
Chronic Obstructive Pulmonary Disease	21
Diabetes	33
Dementia	8
Cancer	75

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Timothy R. O'Leary, MD treated as a radiation oncologist in Saint Louis, MO during 2017 were radiation therapy and marker placement for prostate radiation therapy.

Volume of procedures performed by Dr. Timothy R. O'Leary, MD for Medicare patients.

doctor visit	935
marker placement for prostate radiation therapy	13
radiation therapy	1416

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy R. O'Leary, MD.

**Gender**
Male	269
Female	190

**Age**
From 65 to 74	205
From 75 to 84	171
85 and over	35
Less than 65	48

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2017

Hypertension	75
High Cholesterol	56
Stroke	5
Ischemic Heart Disease	47
Depression	21
Chronic Kidney Disease	38
Asthma	5
Osteoperosis	6
Atrial Fibrilation	13
Heart Failure	26
Chronic Obstructive Pulmonary Disease	21
Diabetes	30
Dementia	7
Cancer	75

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Timothy R. O'Leary, MD treated as a radiation oncologist in Saint Louis, MO during 2018 were radiation therapy.

Volume of procedures performed by Dr. Timothy R. O'Leary, MD for Medicare patients.

doctor visit	915
radiation therapy	24

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy R. O'Leary, MD.

**Gender**
Male	253
Female	179

**Age**
From 65 to 74	218
From 75 to 84	153
85 and over	22
Less than 65	39

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2018

Hypertension	72
High Cholesterol	64
Stroke	5
Ischemic Heart Disease	46
Depression	20
Chronic Kidney Disease	36
Asthma	5
Osteoperosis	7
Atrial Fibrilation	12
Heart Failure	24
Chronic Obstructive Pulmonary Disease	24
Diabetes	35
Dementia	7
Cancer	75

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Timothy R. O'Leary, MD treated as a radiation oncologist in Saint Louis, MO during 2019 were radiation therapy.

Volume of procedures performed by Dr. Timothy R. O'Leary, MD for Medicare patients.

doctor visit	976
radiation therapy	27

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy R. O'Leary, MD.

**Gender**
Male	259
Female	170

**Age**
From 65 to 74	200
From 75 to 84	166
85 and over	30
Less than 65	33

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2019

Hypertension	73
High Cholesterol	62
Stroke	3
Ischemic Heart Disease	45
Depression	22
Chronic Kidney Disease	36
Asthma	6
Osteoperosis	7
Atrial Fibrilation	15
Heart Failure	24
Chronic Obstructive Pulmonary Disease	25
Diabetes	35
Dementia	9
Cancer	75

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Timothy R. O'Leary, MD for Medicare patients.

doctor visit	827

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy R. O'Leary, MD.

**Gender**
Male	244
Female	132

**Age**
From 65 to 74	182
From 75 to 84	151
85 and over	16
Less than 65	27

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2020

Hypertension	70
High Cholesterol	64
Stroke	3
Ischemic Heart Disease	41
Depression	20
Chronic Kidney Disease	38
Asthma	6
Osteoperosis	6
Atrial Fibrilation	12
Heart Failure	20
Chronic Obstructive Pulmonary Disease	24
Diabetes	36
Dementia	7
Cancer	75

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Timothy R. O'Leary, MD for Medicare patients.

doctor visit	634

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy R. O'Leary, MD.

**Gender**
Male	226
Female	128

**Age**
From 65 to 74	166
From 75 to 84	144
85 and over	24
Less than 65	20

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2021

Hypertension	72
High Cholesterol	66
Stroke	4
Ischemic Heart Disease	43
Depression	21
Chronic Kidney Disease	41
Asthma	4
Osteoperosis	6
Atrial Fibrilation	11
Heart Failure	24
Chronic Obstructive Pulmonary Disease	21
Diabetes	33
Dementia	7
Cancer	75

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Timothy R. O'Leary, MD treated as a radiation oncologist in Saint Louis, MO during 2022 were radiation therapy.

Volume of procedures performed by Dr. Timothy R. O'Leary, MD for Medicare patients.

doctor visit	559
radiation therapy	11

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy R. O'Leary, MD.

**Gender**
Male	192
Female	113

**Age**
From 65 to 74	128
From 75 to 84	137
85 and over	25
Less than 65	15

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	37
Depression	19
Chronic Kidney Disease	35
Asthma	10
Osteoperosis	12
Atrial Fibrilation	22
Heart Failure	19
Chronic Obstructive Pulmonary Disease	23
Diabetes	37
Dementia	5
Cancer	75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Timothy R. O'Leary, MD for Medicare patients.

The highest averages for the top procedures that Dr. Timothy R. O'Leary, MD treated as a radiation oncologist in Saint Louis, MO were radiation therapy, hospital care and inpatient care.

doctor visit	906
hospital care	14
inpatient care	14
radiation therapy	1232

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Timothy R. O'Leary, MD.

**Gender**
Male	252
Female	176

**Age**
75 to 84	159
85 and over	29
Less than 65	40
65 to 74	199

Average of Total of Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Timothy R. O'Leary, MD treated were cancer, hypertension, high cholesterol and ischemic heart disease.

Hypertension	65
High Cholesterol	57
Stroke	4
Ischemic Heart Disease	38
Depression	19
Chronic Kidney Disease	30
Asthma	7
Osteoporosis	5
Heart Failure	21
Chronic Obstructive Pulmonary Disease	21
Diabetes	30
Atrial Fibrillation	12
Dementia	6
Cancer	68

Education & Training

Dr. Timothy R. O'Leary, MD graduated from Loyola University Chicago, Stritch School of Medicine. He completed residency at Barnes-Jewish Hospital. He is certified by the Board Certification: Amer Bd Radiology (Radiation Oncology) and has a state license in Illinois.

Medical School: Loyola University Chicago, Stritch School of Medicine

Residency: Barnes-Jewish Hospital

Board Certification: Board Certification: Amer Bd Radiology (Radiation Oncology)

Licensed In: Illinois

Affiliations & Hospitals

Dr. Timothy R. O'Leary, MD is associated with these hospitals and organizations:

Anderson Hospital

Mercy Hospital South

Mercy Hospital Jefferson

Mercy Health System

Mercy Hospital Washington

Mercy Hospital St. Louis

Anderson Hospital (Maryville, IL)

Ratings & Reviews

Dr. Timothy R. O'Leary, MD does not have any reviews yet, be the first to leave a review of Dr. Timothy R. O'Leary, MD here: Leave a Review

(No ratings)

Leave a Review

General Payments

These charts describe general payments received by Dr. Timothy R. O'Leary, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Ion Beam Applications S.A.	$167 ProteusOne $167
Elekta, Inc.	$122 ELEKTA TREATMENT PLANNING SYSTEM $91	ELEKTA LINEAR ACCELERATOR $31
Novocure Inc.	$98 Oncology $98
E.R. Squibb & Sons, L.L.C.	$57 ERBITUX $38	SPRYCEL $20
DARA Biosciences, Inc.	$20 Soltamox $20
Other	$38 Xofigo $14	THYROGEN $13	ENTRE $11

**Types of Payments**
Food and Beverage	$502

Ownership and Interest Payments

This table describes ownership payments received by Dr. Timothy R. O'Leary, MD.

DARA Biosciences, Inc.

2014

$0.00

Physician Covered Recipient

None

Biography

Dr. Timothy O'Leary is a radiation oncology specialist. Before performing his residency at Barnes-Jewish Hospital, Dr. O'Leary attended Loyola University Chicago, Stritch School of Medicine. His hospital/clinic affiliations include Anderson Hospital, Mercy Hospital St. Louis, and Mercy Hospital Washington.

Select Year:

Dr. Timothy R. O'Leary, MD

Office Locations

In The News

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. Timothy R. O'Leary, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Timothy R. O'Leary, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Ownership and Interest Payments

Biography

Other Providers in Saint Louis, MO