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Dr. Diana M. Breyer, MD

(2 Ratings)

Specializes in: Adult Pulmonology and Adult Critical Care

St. Louis University School of Medicine

Professional interests include: pulmonary hypertension, lung issues, intensive care

2121 E Harmony Road Suite 300
Fort Collins, CO 80528

(970) 224-9102

Dr. Diana M. Breyer, MD is a pulmonologist in Fort Collins, CO specializing in adult pulmonology and adult critical care. She graduated from St. Louis University School of Medicine. Dr. Diana M. Breyer, MD is affiliated with UCHealth and UCHealth Poudre Valley Hospital.

Office Locations

1024 S. Lemay Avenue
Fort Collins, CO 80524

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2121 E Harmony Road Suite 300
Fort Collins, CO 80528

(970) 224-9102

(970) 224-9112

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2500 Rocky Mountain Avenue
Loveland, CO 80538

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Some issues Dr. Diana M. Breyer, MD can help you with:

Lung Issues

Every cell in the body requires oxygen to function and produces carbon dioxide as a waste product. In order to keep the body's tissues constantly supplied with fresh oxygen and to keep waste from building up, the lungs pump air in and out, even while sleeping or unaware. Unfortunately, diseases and disorders affecting the lungs are some of the most common medical problems afflicting people around the world. Some of the most common lung problems include asthma, COPD, pneumonia, and lung cancer.

Asthma is a chronic disease where swollen, inflamed airways make it hard to breathe. It is often brought on by specific triggers. While asthma is a common condition, affecting millions of people, it can also be serious and even fatal in severe cases. Treatment involves avoiding triggers and using inhaled corticosteroid medications.

COPD, or Chronic Obstructive Pulmonary Disease, is the name given to two illnesses that both cause difficulty breathing: emphysema and chronic bronchitis. In emphysema, the air sacs of the lungs become damaged, while with bronchitis they become clogged with mucus. COPD is the fourth leading cause of death in the United States. It is almost always caused by breathing irritants into the lungs, such as smoking or heavy pollution.

Pneumonia is a lung infection that can be caused by bacteria, a virus, or fungi. Most healthy people recover from pneumonia in a week or two, but for some people pneumonia can be fatal. There are treatments available for pneumonia, but the best treatment is to prevent getting sick in the first place. People who are at risk should make sure they get a flu shot every year. There is also a vaccine available for the type of bacteria that causes pneumonia.

Lung cancer occurs when abnormal cells inside the lung grow into a tumor, destroying healthy tissue. Because it is so difficult to detect lung cancer in early stages when it has few symptoms, it is the deadliest form of cancer, responsible for the most cancer deaths both in the U.S. and worldwide. Most lung cancer is caused by exposure to tobacco smoke, but between 10-15% of cases are not linked to smoking.

Some problems with the lungs are minor and are not cause for concern. However if symptoms have lasted for a month or more, even if they are minor, it is worth checking with a healthcare professional. A cough, shortness of breath, or excess mucus production that lingers for weeks are all worth getting looked at.

In The News (see more mentions in the news)

“Dr. Diana Breyer, UCHealth s Northern Colorado chief medical officer, emphasized the region s role in developing this innovation: "Sepsis is one of the most urgent threats patients face, and...”—"UCHealth Innovation Saves Lives: Virtual Monitoring Reduces Sepsis Deaths", North Forty News, September 2025

“Dr. Diana Breyer, chief pulmonologist and ICU doctor for UCHealth in northern Colorado, said her fellow medical providers are growingly concerned with the trajectory of the pandemic to end 2021.”—"'Heartbroken': Doctors Concerned About Trajectory Of COVID As Surge Continues, Hospitals At Or Beyond Capacity", CBS News, November 2021

“Dr. Diana Breyer, chief quality analytics officer, critical care physician and pulmonologist for UCHealth said area hospitals are seeing a younger population of COVID patients.”—"COVID challenges different during this surge", Estes Park Trail Gazette, November 2021

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Diana M. Breyer, MD treated as a pulmonologist in Fort Collins, CO during 2012 were hospital care, inpatient care, pulmonary testing and catheterization.

Volume of procedures performed by Dr. Diana M. Breyer, MD for Medicare patients.

catheterization	13
doctor visit	459
hospital care	282
inpatient care	282
preventive care	13
pulmonary testing	86
vaccines	13

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Diana M. Breyer, MD treated as a pulmonologist in Fort Collins, CO during 2013 were hospital care, inpatient care, pulmonary testing and bronchoscopy.

Volume of procedures performed by Dr. Diana M. Breyer, MD for Medicare patients.

bronchoscopy	15
catheterization	12
doctor visit	456
hospital care	281
inpatient care	281
minimally invasive procedures	15
pulmonary testing	63

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Diana M. Breyer, MD.

**Gender**
Male	155
Female	197

**Ethnicity**
Non-Hispanic White	337
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	137
From 75 to 84	127
85 and over	53
Less than 65	35

Conditions of Medicare patients treated by Dr. Diana M. Breyer, MD in 2013

Hypertension	66
High Cholesterol	54
Stroke	6
Ischemic Heart Disease	45
Depression	30
Chronic Kidney Disease	35
Asthma	22
Osteoperosis	9
Atrial Fibrilation	27
Heart Failure	39
Chronic Obstructive Pulmonary Disease	49
Diabetes	32
Dementia	11
Cancer	17

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Diana M. Breyer, MD treated as a pulmonologist in Fort Collins, CO during 2014 were hospital care, inpatient care, pulmonary testing and catheterization.

Volume of procedures performed by Dr. Diana M. Breyer, MD for Medicare patients.

catheterization	12
doctor visit	375
hospital care	282
inpatient care	282
preventive care	12
pulmonary testing	126
vaccines	12

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Diana M. Breyer, MD.

**Gender**
Male	169
Female	175

**Ethnicity**
Non-Hispanic White	324
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	128
From 75 to 84	120
85 and over	54
Less than 65	42

Conditions of Medicare patients treated by Dr. Diana M. Breyer, MD in 2014

Hypertension	67
High Cholesterol	54
Stroke	8
Ischemic Heart Disease	46
Depression	32
Chronic Kidney Disease	33
Asthma	23
Osteoperosis	9
Atrial Fibrilation	25
Heart Failure	37
Chronic Obstructive Pulmonary Disease	51
Diabetes	31
Dementia	8
Cancer	17

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Diana M. Breyer, MD treated as a pulmonologist in Fort Collins, CO during 2015 were hospital care, inpatient care and pulmonary testing.

Volume of procedures performed by Dr. Diana M. Breyer, MD for Medicare patients.

doctor visit	447
hospital care	303
inpatient care	303
pulmonary testing	158

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Diana M. Breyer, MD.

**Gender**
Male	360
Female	390

**Ethnicity**
Non-Hispanic White	688
Black	0
Hispanic	36
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	276
From 75 to 84	248
85 and over	128
Less than 65	98

Conditions of Medicare patients treated by Dr. Diana M. Breyer, MD in 2015

Hypertension	68
High Cholesterol	52
Stroke	9
Ischemic Heart Disease	51
Depression	35
Chronic Kidney Disease	41
Asthma	38
Osteoperosis	8
Atrial Fibrilation	23
Heart Failure	38
Chronic Obstructive Pulmonary Disease	57
Diabetes	31
Dementia	12
Cancer	17

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Diana M. Breyer, MD treated as a pulmonologist in Fort Collins, CO during 2016 were hospital care, inpatient care, pulmonary testing and preventive care.

Volume of procedures performed by Dr. Diana M. Breyer, MD for Medicare patients.

bronchoscopy	14
catheterization	12
doctor visit	505
hospital care	319
inpatient care	319
preventive care	22
pulmonary testing	108
vaccines	22

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Diana M. Breyer, MD.

**Gender**
Male	203
Female	211

**Ethnicity**
Non-Hispanic White	387
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	147
From 75 to 84	145
85 and over	79
Less than 65	43

Conditions of Medicare patients treated by Dr. Diana M. Breyer, MD in 2016

Hypertension	70
High Cholesterol	52
Stroke	10
Ischemic Heart Disease	46
Depression	39
Chronic Kidney Disease	38
Asthma	55
Osteoperosis	9
Atrial Fibrilation	26
Heart Failure	41
Chronic Obstructive Pulmonary Disease	53
Diabetes	30
Dementia	13
Cancer	18

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Diana M. Breyer, MD treated as a pulmonologist in Fort Collins, CO during 2017 were hospital care, inpatient care and pulmonary testing.

Volume of procedures performed by Dr. Diana M. Breyer, MD for Medicare patients.

doctor visit	69
hospital care	192
inpatient care	192
pulmonary testing	22

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Diana M. Breyer, MD.

**Gender**
Male	118
Female	113

**Ethnicity**
Non-Hispanic White	215
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	75
From 75 to 84	78
85 and over	38
Less than 65	40

Conditions of Medicare patients treated by Dr. Diana M. Breyer, MD in 2017

Hypertension	75
High Cholesterol	47
Stroke	7
Ischemic Heart Disease	52
Depression	44
Chronic Kidney Disease	53
Asthma	23
Osteoperosis	10
Atrial Fibrilation	25
Heart Failure	55
Chronic Obstructive Pulmonary Disease	56
Diabetes	32
Dementia	16
Cancer	17

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Diana M. Breyer, MD treated as a pulmonologist in Fort Collins, CO during 2018 were hospital care and inpatient care.

Volume of procedures performed by Dr. Diana M. Breyer, MD for Medicare patients.

hospital care	185
inpatient care	185

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Diana M. Breyer, MD.

**Gender**
Male	74
Female	73

**Ethnicity**
Non-Hispanic White	133
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	60
From 75 to 84	46
85 and over	14
Less than 65	27

Conditions of Medicare patients treated by Dr. Diana M. Breyer, MD in 2018

Hypertension	75
High Cholesterol	58
Stroke	14
Ischemic Heart Disease	59
Depression	39
Chronic Kidney Disease	61
Asthma	18
Osteoperosis	7
Atrial Fibrilation	33
Heart Failure	63
Chronic Obstructive Pulmonary Disease	48
Diabetes	36
Dementia	23
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Diana M. Breyer, MD treated as a pulmonologist in Fort Collins, CO during 2019 were hospital care and inpatient care.

Volume of procedures performed by Dr. Diana M. Breyer, MD for Medicare patients.

hospital care	191
inpatient care	191

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Diana M. Breyer, MD.

**Gender**
Male	83
Female	75

**Ethnicity**
Non-Hispanic White	144
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	60
From 75 to 84	54
85 and over	16
Less than 65	28

Conditions of Medicare patients treated by Dr. Diana M. Breyer, MD in 2019

Hypertension	75
High Cholesterol	60
Stroke	7
Ischemic Heart Disease	65
Depression	49
Chronic Kidney Disease	75
Asthma	13
Osteoperosis	8
Atrial Fibrilation	35
Heart Failure	61
Chronic Obstructive Pulmonary Disease	56
Diabetes	37
Dementia	22
Cancer	16

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Diana M. Breyer, MD treated as a pulmonologist in Fort Collins, CO during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Diana M. Breyer, MD for Medicare patients.

hospital care	49
inpatient care	49

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Diana M. Breyer, MD.

**Gender**
Male	37
Female	26

**Ethnicity**
Non-Hispanic White	52
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	25
From 75 to 84	26
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Diana M. Breyer, MD in 2020

Hypertension	75
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	70
Depression	35
Chronic Kidney Disease	56
Asthma	0
Osteoperosis	0
Atrial Fibrilation	22
Heart Failure	54
Chronic Obstructive Pulmonary Disease	48
Diabetes	43
Dementia	19
Cancer	25

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Diana M. Breyer, MD treated as a pulmonologist in Fort Collins, CO during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Diana M. Breyer, MD for Medicare patients.

hospital care	79
inpatient care	79

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Diana M. Breyer, MD.

**Gender**
Male	39
Female	51

**Ethnicity**
Non-Hispanic White	76
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	46
From 75 to 84	24
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Diana M. Breyer, MD in 2021

Hypertension	75
High Cholesterol	69
Stroke	18
Ischemic Heart Disease	63
Depression	44
Chronic Kidney Disease	70
Asthma	19
Osteoperosis	13
Atrial Fibrilation	20
Heart Failure	54
Chronic Obstructive Pulmonary Disease	49
Diabetes	48
Dementia	22
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Diana M. Breyer, MD treated as a pulmonologist in Fort Collins, CO during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Diana M. Breyer, MD for Medicare patients.

hospital care	33
inpatient care	33

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Diana M. Breyer, MD.

**Gender**
Male	18
Female	23

**Age**
From 65 to 74	0
From 75 to 84	17
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Diana M. Breyer, MD in 2022

Hypertension	75
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	32
Depression	32
Chronic Kidney Disease	37
Asthma	0
Osteoperosis	0
Atrial Fibrilation	37
Heart Failure	39
Chronic Obstructive Pulmonary Disease	49
Diabetes	37
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Diana M. Breyer, MD treated as a pulmonologist in Fort Collins, CO during 2023 were hospital care and inpatient care.

Volume of procedures performed by Dr. Diana M. Breyer, MD for Medicare patients.

hospital care	51
inpatient care	51

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Diana M. Breyer, MD.

**Gender**
Male	21
Female	19

**Age**
From 65 to 74	0
From 75 to 84	17
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Diana M. Breyer, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	50
Depression	45
Chronic Kidney Disease	50
Asthma	0
Osteoperosis	0
Atrial Fibrilation	50
Heart Failure	50
Chronic Obstructive Pulmonary Disease	40
Diabetes	38
Dementia	30
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Diana M. Breyer, MD for Medicare patients.

The highest averages for the top procedures that Dr. Diana M. Breyer, MD treated as a pulmonologist in Fort Collins, CO were hospital care, inpatient care, pulmonary testing and minimally invasive procedures.

bronchoscopy	14
catheterization	12
doctor visit	385
hospital care	187
inpatient care	187
minimally invasive procedures	15
preventive care	15
pulmonary testing	93
vaccines	15

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Diana M. Breyer, MD.

**Gender**
Male	106
Female	112

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	196
Hispanic	3
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	75
85 and over	31
Less than 65	26
65 to 74	79

Average of Total of Conditions of Medicare patients treated by Dr. Diana M. Breyer, MD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Diana M. Breyer, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic obstructive pulmonary disease.

Hypertension	66
High Cholesterol	54
Stroke	6
Ischemic Heart Disease	48
Depression	35
Chronic Kidney Disease	45
Asthma	17
Osteoporosis	6
Heart Failure	44
Chronic Obstructive Pulmonary Disease	46
Diabetes	32
Atrial Fibrillation	26
Cancer	11
Dementia	14

Education & Training

Dr. Diana M. Breyer, MD graduated from St. Louis University School of Medicine. She completed residency at University of Iowa Hospitals & Clinics. She has a state license in Colorado.

Medical School: St. Louis University School of Medicine

Residency: University of Iowa Hospitals & Clinics

Licensed In: Colorado

Affiliations & Hospitals

Dr. Diana M. Breyer, MD is associated with these hospitals and organizations:

UCHealth

UCHealth Poudre Valley Hospital

Ratings & Reviews

Dr. Diana M. Breyer, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 2 ratings. We collect ratings and reviews of Dr. Diana M. Breyer, MD from all over the web to help you find the right in Fort Collins, CO.

Overall Rating

(2 Ratings)

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General Payments

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

**Payments by Company**
Pulmonx Corporation	$122 PULMONX CHARTIS TABLET CONSOLE $122
ABIOMED	$117 Impella $117
Edwards Lifesciences Corporation	$20 ClearSight System $20
AbbVie Inc.	$16 Synthroid $16
GlaxoSmithKline, LLC.	$16 Menveo $16
Other	$13 UPTRAVI $13

**Types of Payments**
Food and Beverage	$291
Education	$13

Biography

Dr. Diana Breyer is an adult critical care and adult pulmonology specialist in Fort Collins, CO and Loveland, CO. Dr. Breyer's areas of expertise consist of intensive care and pulmonary hypertension. She is professionally affiliated with UCHealth. She is a graduate of St. Louis University School of Medicine. For her residency, Dr. Breyer trained at the University of Iowa Hospitals & Clinics.