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Dr. Thomas Carl Weiner, MD

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Specializes in: Medical Oncology, Adult Oncology and Adult Hematology

2475 E Broadway Street
Helena, MT 59601

(406) 457-4180

Dr. Thomas Carl Weiner, MD is a medical oncologist in Helena, MT specializing in medical oncology, adult oncology and adult hematology.

Office Locations

2475 E Broadway Street
Helena, MT 59601

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In The News (see more mentions in the news)

“A panel of Montana state medical board members on Friday voted unanimously to revoke the medical license of Dr. Thomas Weiner, the former Helena cancer doctor who has been accused of prescribing...”—"Montana medical board revokes cancer doctor's license after accusations of harming patients", Associated Press News, December 2025

“Since at least April 2021, the Montana medical licensing board has had evidence, including thousands of pages of patient files and medical reviews, that Dr. Thomas C. Weiner, a popular Helena...”—"First Edition: Friday, March 21, 2025 - KFF Health News", KFF Health News, March 2025

“The Montana Board of Medical Examiners has once again renewed the license of oncologist Thomas Weiner, MD, who was accused of harming patients when he was fired from St. Peter's Hospital in Helena...”—"Nurses Describe Active Shooter Terror; Nurse Hit Over Water? Cavity Search Refusal", MedPage Today, February 2025

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Thomas Carl Weiner, MD treated as a medical oncologist in Helena, MT during 2012 were hospital care, inpatient care, diagnostic procedures and bone marrow tests.

Volume of procedures performed by Dr. Thomas Carl Weiner, MD for Medicare patients.

bone marrow tests	22
device removal	18
diagnostic procedures	22
doctor visit	4796
hospital care	1352
inpatient care	1352

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Thomas Carl Weiner, MD treated as a medical oncologist in Helena, MT during 2013 were hospital care, inpatient care, outpatient care and diagnostic procedures.

Volume of procedures performed by Dr. Thomas Carl Weiner, MD for Medicare patients.

bone marrow tests	20
device removal	15
diagnostic procedures	20
doctor visit	5290
hospital care	2393
inpatient care	2318
outpatient care	75

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Carl Weiner, MD.

**Gender**
Male	369
Female	603

**Ethnicity**
Non-Hispanic White	947
Black	0
Hispanic	0
Asian	0
Other	0
Native American	12

**Age**
From 65 to 74	392
From 75 to 84	360
85 and over	125
Less than 65	95

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2013

Hypertension	45
High Cholesterol	26
Stroke	3
Ischemic Heart Disease	23
Depression	21
Chronic Kidney Disease	21
Asthma	5
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	14
Chronic Obstructive Pulmonary Disease	18
Diabetes	20
Dementia	9
Cancer	52

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Thomas Carl Weiner, MD treated as a medical oncologist in Helena, MT during 2014 were hospital care, inpatient care, outpatient care and diagnostic procedures.

Volume of procedures performed by Dr. Thomas Carl Weiner, MD for Medicare patients.

bone marrow tests	19
diagnostic procedures	19
doctor visit	5421
hospital care	2015
inpatient care	1931
outpatient care	84

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Carl Weiner, MD.

**Gender**
Male	381
Female	622

**Ethnicity**
Non-Hispanic White	974
Black	0
Hispanic	0
Asian	0
Other	0
Native American	13

**Age**
From 65 to 74	398
From 75 to 84	357
85 and over	146
Less than 65	102

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2014

Hypertension	44
High Cholesterol	25
Stroke	3
Ischemic Heart Disease	23
Depression	22
Chronic Kidney Disease	20
Asthma	5
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	13
Chronic Obstructive Pulmonary Disease	19
Diabetes	20
Dementia	9
Cancer	52

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Thomas Carl Weiner, MD treated as a medical oncologist in Helena, MT during 2015 were hospital care, inpatient care, diagnostic procedures and bone marrow tests.

Volume of procedures performed by Dr. Thomas Carl Weiner, MD for Medicare patients.

bone marrow tests	16
diagnostic procedures	16
doctor visit	5394
hospital care	2218
inpatient care	2218

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Carl Weiner, MD.

**Gender**
Male	772
Female	1348

**Ethnicity**
Non-Hispanic White	2044
Black	0
Hispanic	0
Asian	0
Other	26
Native American	28

**Age**
From 65 to 74	898
From 75 to 84	722
85 and over	302
Less than 65	198

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2015

Hypertension	45
High Cholesterol	25
Stroke	4
Ischemic Heart Disease	24
Depression	23
Chronic Kidney Disease	19
Asthma	14
Osteoperosis	10
Atrial Fibrilation	8
Heart Failure	14
Chronic Obstructive Pulmonary Disease	21
Diabetes	21
Dementia	8
Cancer	51

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Thomas Carl Weiner, MD treated as a medical oncologist in Helena, MT during 2016 were hospital care, inpatient care, diagnostic procedures and bone marrow tests.

Volume of procedures performed by Dr. Thomas Carl Weiner, MD for Medicare patients.

bone marrow tests	23
device removal	16
diagnostic procedures	23
doctor visit	5775
hospital care	1971
inpatient care	1958
outpatient care	13

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Carl Weiner, MD.

**Gender**
Male	416
Female	739

**Ethnicity**
Non-Hispanic White	1110
Black	0
Hispanic	0
Asian	0
Other	0
Native American	23

**Age**
From 65 to 74	492
From 75 to 84	374
85 and over	173
Less than 65	116

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2016

Hypertension	43
High Cholesterol	24
Stroke	3
Ischemic Heart Disease	24
Depression	23
Chronic Kidney Disease	21
Asthma	23
Osteoperosis	10
Atrial Fibrilation	9
Heart Failure	15
Chronic Obstructive Pulmonary Disease	20
Diabetes	21
Dementia	7
Cancer	48

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Thomas Carl Weiner, MD treated as a medical oncologist in Helena, MT during 2017 were hospital care, inpatient care, diagnostic procedures and bone marrow tests.

Volume of procedures performed by Dr. Thomas Carl Weiner, MD for Medicare patients.

bone marrow tests	19
device removal	15
diagnostic procedures	19
doctor visit	5674
hospital care	2194
inpatient care	2182
outpatient care	12

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Carl Weiner, MD.

**Gender**
Male	454
Female	760

**Ethnicity**
Non-Hispanic White	1176
Black	0
Hispanic	0
Asian	0
Other	0
Native American	17

**Age**
From 65 to 74	504
From 75 to 84	418
85 and over	164
Less than 65	128

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2017

Hypertension	45
High Cholesterol	25
Stroke	2
Ischemic Heart Disease	24
Depression	25
Chronic Kidney Disease	25
Asthma	6
Osteoperosis	11
Atrial Fibrilation	8
Heart Failure	14
Chronic Obstructive Pulmonary Disease	20
Diabetes	22
Dementia	7
Cancer	47

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Thomas Carl Weiner, MD treated as a medical oncologist in Helena, MT during 2018 were hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Carl Weiner, MD for Medicare patients.

doctor visit	5789
hospital care	1414
inpatient care	1414

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Carl Weiner, MD.

**Gender**
Male	491
Female	822

**Ethnicity**
Non-Hispanic White	1269
Black	0
Hispanic	0
Asian	0
Other	18
Native American	14

**Age**
From 65 to 74	604
From 75 to 84	445
85 and over	156
Less than 65	108

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2018

Hypertension	47
High Cholesterol	31
Stroke	3
Ischemic Heart Disease	23
Depression	23
Chronic Kidney Disease	24
Asthma	6
Osteoperosis	12
Atrial Fibrilation	8
Heart Failure	12
Chronic Obstructive Pulmonary Disease	21
Diabetes	20
Dementia	6
Cancer	45

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Thomas Carl Weiner, MD treated as a medical oncologist in Helena, MT during 2019 were hospital care, inpatient care and device removal.

Volume of procedures performed by Dr. Thomas Carl Weiner, MD for Medicare patients.

device removal	13
doctor visit	6038
hospital care	1789
inpatient care	1789

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Carl Weiner, MD.

**Gender**
Male	511
Female	863

**Ethnicity**
Non-Hispanic White	1318
Black	0
Hispanic	0
Asian	0
Other	27
Native American	13

**Age**
From 65 to 74	658
From 75 to 84	432
85 and over	170
Less than 65	114

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2019

Hypertension	47
High Cholesterol	31
Stroke	3
Ischemic Heart Disease	24
Depression	24
Chronic Kidney Disease	25
Asthma	7
Osteoperosis	14
Atrial Fibrilation	9
Heart Failure	13
Chronic Obstructive Pulmonary Disease	19
Diabetes	21
Dementia	8
Cancer	44

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Thomas Carl Weiner, MD treated as a medical oncologist in Helena, MT during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Thomas Carl Weiner, MD for Medicare patients.

doctor visit	5483
hospital care	859
inpatient care	859

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas Carl Weiner, MD.

**Gender**
Male	500
Female	807

**Ethnicity**
Non-Hispanic White	1254
Black	0
Hispanic	0
Asian	0
Other	25
Native American	15

**Age**
From 65 to 74	632
From 75 to 84	406
85 and over	164
Less than 65	105

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2020

Hypertension	47
High Cholesterol	32
Stroke	3
Ischemic Heart Disease	22
Depression	23
Chronic Kidney Disease	25
Asthma	7
Osteoperosis	14
Atrial Fibrilation	9
Heart Failure	12
Chronic Obstructive Pulmonary Disease	17
Diabetes	21
Dementia	8
Cancer	44

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2020

Volume of procedures performed by Dr. Thomas Carl Weiner, MD for Medicare patients.

The highest averages for the top procedures that Dr. Thomas Carl Weiner, MD treated as a medical oncologist in Helena, MT were hospital care, inpatient care, outpatient care and bone marrow tests.

bone marrow tests	19
device removal	15
diagnostic procedures	19
doctor visit	5517
hospital care	1800
inpatient care	1780
outpatient care	46

Average Medicare Patient Data From 2012 - 2020

Information about Medicare patients treated by Dr. Thomas Carl Weiner, MD.

**Gender**
Male	432
Female	729

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	1121
Native American / Alaskan Native	15
Hispanic	0
Other	10

**Age**
75 to 84	390
85 and over	155
Less than 65	107
65 to 74	508

Average of Total of Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD From 2012 - 2020

The highest averages of the most common conditions of Medicare patients that Dr. Thomas Carl Weiner, MD treated were cancer, hypertension, high cholesterol and chronic kidney disease.

Hypertension	40
High Cholesterol	24
Stroke	2
Ischemic Heart Disease	20
Depression	20
Chronic Kidney Disease	20
Asthma	8
Osteoporosis	9
Heart Failure	11
Chronic Obstructive Pulmonary Disease	17
Diabetes	18
Atrial Fibrillation	7
Dementia	6
Cancer	42

Education & Training

He has a state license in Montana.

Licensed In: Montana

Ratings & Reviews

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General Payments

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

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$4,289 IMFINZI $4,123	FASLODEX $81	TAGRISSO $28	LYNPARZA $23	CALQUENCE $22	Other $12
EMD Serono, Inc.	$2,581 Tepmetko $500	BAVENCIO $11	$2,070
Kite Pharma, Inc.	$1,700 Tecartus $1,700
Novartis Pharmaceuticals Corporation	$1,425 TASIGNA $385	NON BRAND $134	VOTRIENT $127	JADENU $97	PROMACTA $93	Other $590
Karyopharm Therapeutics Inc.	$1,300 XPOVIO $1,300
Other	$9,777 OPDIVO $638	BRUKINSA $525	IMBRUVICA $478	KEYTRUDA $455	Vectibix $352	Other $7,329

**Types of Payments**
Consulting Fee	$9,962
Food and Beverage	$8,864
Honoraria	$1,300
Education	$776
Travel and Lodging	$170

Biography

Dr. Thomas Weiner is a Helena, MT physician who specializes in adult hematology, adult oncology, and medical oncology. Dr. Weiner obtained a license to practice in Montana.

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Dr. Thomas Carl Weiner, MD

Office Locations

In The News (see more mentions 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. Thomas Carl Weiner, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD in 2020

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2020

Average Medicare Patient Data From 2012 - 2020

Average of Total of Conditions of Medicare patients treated by Dr. Thomas Carl Weiner, MD From 2012 - 2020

Education & Training

Ratings & Reviews

General Payments

Biography

Other Providers in Helena, MT