Dr. Diana M. Breyer, MD

  • Fort Collins, CO
  • Pulmonologist
NPI1023088945PAC ID2264492685
Medicare services, 2024
86
Medicare patients, 2024
44
Part D claims, 2018
31
Publications
1
Hospital affiliations
2
Practice address
1024 S Lemay Ave, Fort Collins, CO 80524
Practice phone
Call (970) 495-7000
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

UCHealth Poudre Valley Hospital

Hospital · Fort Collins, Colorado

See all 7 affiliations

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Dr. Diana M. Breyer is a pulmonologist in Fort Collins, Colorado

Dr. Breyer practices at UCHealth Poudre Valley Hospital in Fort Collins, Colorado, part of UCHealth.

Dr. Breyer's NPI, 1023088945, was assigned on January 24, 2006. Dr. Breyer graduated from Saint Louis University School Of Medicine in 1993. Dr. Breyer holds Colorado license DR.0037818.

NPI and contact details
Medicare PAC ID
2264492685
NPI enumeration date
January 24, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(970) 495-7000
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Female
Estimated age
59
Medical school graduation
1993

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Diana M. Breyer practices at UCHealth Poudre Valley Hospital in Fort Collins, Colorado

Dr. Breyer's primary practice is UCHealth Poudre Valley Hospital, at 1024 S Lemay Ave, Fort Collins, CO 80524 in Larimer County. The practice phone is (970) 495-7000.

Source: Dmand AI Affiliation Data

Dr. Diana M. Breyer is affiliated with 4 sites of care and 3 medical groups

Dr. Breyer's primary practice is UCHealth Poudre Valley Hospital in Fort Collins, Colorado, part of UCHealth. The medical group on file is UCHealth Medical Group. Dmand AI also links Dr. Breyer to 1 more hospital, 2 group practices and clinics and 2 medical groups, each named with a free account.

See all 7 affiliations for Dr. Breyer

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Diana M. Breyer's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Breyer practices, 4 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
UCHealth Poudre Valley HospitalAvailable with a free account
+3 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Diana M. Breyer is one of 254 pulmonologists in Colorado

Pulmonary disease is Dr. Breyer's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Breyer is board certified in critical care medicine by the American Board of Internal Medicine. Dmand AI has Dr. Breyer's licenses on file in 2 states: Colorado and Iowa.

Specialties and state licenses

  • Pulmonary disease, ColoradoPrimaryLicense DR.0037818 · 1999 to 2027 · taxonomy 207RP1001X
  • Iowa license1993 to 1999

Pulmonologists near Dr. Breyer

Counts of pulmonologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Diana M. Breyer billed Medicare for 86 services in 2024

CMS data shows 86 Medicare services from Dr. Breyer across 3 procedure codes in 2024, for 44 Medicare patients. Medicare paid $9,364 for them. Every service was in a facility, such as a hospital, rather than an office.

Medicare services, 202486
Medicare patients44
Paid by Medicare$9,364
Procedure codes3

Dr. Breyer's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 792024: 869%

Dr. Breyer compared with the Colorado median for pulmonologists, 2024

  • Dr. Breyer
  • Colorado median
Medicare services
86vs 35476% below
Medicare patients
44vs 19577% below
Part D claims
31vs 37692% below

Medians across 247 pulmonologists in Colorado with Dmand AI profiles that report each measure.

Dr. Breyer's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Breyer

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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Breyer and other pulmonologists in Colorado.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Diana M. Breyer treated 44 Medicare patients in 2024, average age 72

CMS counts 44 Medicare patients who saw Dr. Breyer in 2024. The largest group is 75 to 84, with 19 patients. 75% of them have high blood pressure, and 66% have high cholesterol. 27% are also on Medicaid. Their average risk score is 2.34, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Breyer's median patient age at 73, with 57% women.

Medicare patients, 202444
Average age72
Average risk score2.34
Also on Medicaid27%

Dr. Breyer's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Breyer's Medicare patients by sex, 2024

  • Women2148%
  • Men2352%

Chronic conditions among Dr. Breyer's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol66%
  3. Chronic kidney disease64%
  4. Ischemic heart disease59%
  5. Arthritis57%
  6. Heart failure57%
  7. COPD52%
  8. Depression50%

Share of Medicare patients with each condition. A patient can have several.

Dr. Breyer's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 73

Patient panel by sex, all payers

  • Women57%
  • Men43%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Diana M. Breyer wrote 31 Medicare Part D claims in 2018

In 2018, Dr. Breyer wrote 31 Medicare Part D claims. They cover 2 drugs, with $121,105 in total drug cost. In 2017, CMS named 238 claims across 10 drugs.

Part D claims, 201831
Drugs named by CMS2
Total drug cost$121,105

Dr. Breyer's most prescribed drugs by claims, 2018

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2017 to 2018

  • 2017
  • 2018
Claims for drugs CMS names
2017: 2382018: 3187%

Drugs named by CMS: 2 in 2018, 10 in 2017.

See all prescribing by Dr. Breyer

Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026

How Dr. Diana M. Breyer takes part in Medicare

Dr. Breyer accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Dr. Diana M. Breyer has 1 publication on record

Dmand AI links 1 paper to Dr. Breyer in 2021. Dr. Breyer's most frequent co-authors are Christopher B. Davis, MD, Adeel Ahmad Faruki, MD and Read G. Pierce, MD.

Papers1

Dr. Breyer's most frequent co-authors

Recent publications by Dr. Breyer

See all 1 publications and co-authors

See who Dr. Breyer researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Breyer works with, so you can find a warm path to the right pulmonologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Diana M. Breyer received $486 in industry payments from 2016 to 2025

CMS Open Payments shows 8 general payments to Dr. Breyer from 7 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Abiomed paid the most, $172.

General payments to Dr. Breyer by program year, 2016 to 2025

General payments to Dr. Breyer by kind, 2016 to 2025

$486in total
  • Food and beverage$47497%
  • Education$133%

Companies that paid Dr. Breyer the most, 2016 to 2025

Share is of all general payments to this clinician.

See all payments to Dr. Breyer

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Diana M. Breyer has 1 award and honors on record

Dmand AI lists 1 award for Dr. Breyer, most recently CMS Stage 1 EHR in 2013.

Awards and honors for Dr. Breyer

  1. 2013
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Diana M. Breyer graduated from Saint Louis University School Of Medicine

Dr. Breyer graduated from Saint Louis University School Of Medicine in 1993.

  1. Medical schoolSaint Louis University School Of Medicine
  2. Board certified in critical care medicineAmerican Board of Internal Medicine
  3. Board certified in pulmonary diseaseAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Diana M. Breyer accepts plans from 16 insurance carriers

Dr. Breyer is in network with 16 carriers, including Elevance, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.

Plan types Dr. Breyer accepts, by number of carriers

  1. PPO12
  2. Medicare9
  3. HMO8
  4. POS6
  5. EPO3
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Diana M. Breyer's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Diana M. Breyer

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Diana M. Breyer's NPI number?

Dr. Diana M. Breyer's NPI number is 1023088945. It was assigned on January 24, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Diana M. Breyer?

Dr. Diana M. Breyer is a pulmonologist in Fort Collins, Colorado. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).

Where does Dr. Diana M. Breyer practice?

Dr. Breyer practices at 1024 S Lemay Ave, Fort Collins, CO 80524. Dr. Breyer's primary practice is UCHealth Poudre Valley Hospital in Fort Collins, Colorado, part of UCHealth. Dmand AI also links Dr. Breyer to 1 hospital, 2 group practices and clinics and 2 medical groups.

What is Dr. Diana M. Breyer's office phone number?

The practice phone on file for Dr. Breyer is (970) 495-7000.

What is Dr. Diana M. Breyer's medical license number?

Dr. Breyer holds Colorado license DR.0037818, one of the licenses on file in 2 states.

Which states has Dr. Diana M. Breyer been licensed in?

Dmand AI has state licenses on file for Dr. Breyer in Colorado (1999 to 2027) and Iowa (1993 to 1999).

Which hospitals is Dr. Diana M. Breyer affiliated with?

Dr. Breyer practices at UCHealth Poudre Valley Hospital in Fort Collins, Colorado. Dmand AI links Dr. Breyer to 1 more hospital.

What medical group is Dr. Diana M. Breyer part of?

Dr. Breyer is linked to UCHealth Medical Group. Dmand AI links Dr. Breyer to 2 more medical groups.

Does Dr. Diana M. Breyer accept Medicare?

Yes. CMS data shows Dr. Breyer billed Medicare for 86 services in 2024, and Dr. Breyer accepts Medicare assignment.

How many Medicare patients does Dr. Diana M. Breyer see?

CMS counts 44 Medicare patients who saw Dr. Breyer in 2024, with an average age of 72.

Show 9 more questionsShow fewer questions

Is Dr. Diana M. Breyer board certified?

Yes. Dr. Breyer is board certified in critical care medicine by the American Board of Internal Medicine.

What services does Dr. Diana M. Breyer bill to Medicare?

In 2024, Dr. Breyer's most billed Medicare services were critical care (99291), hospital inpatient care (99232) and hospital inpatient care (99233).

Where did Dr. Diana M. Breyer go to medical school?

Dr. Breyer graduated from Saint Louis University School Of Medicine in 1993.

What drugs does Dr. Diana M. Breyer prescribe most?

In 2018 Medicare Part D data, Dr. Breyer's most prescribed drugs by claims were Ventolin Hfa and Letairis.

Has Dr. Diana M. Breyer received payments from drug or device companies?

CMS Open Payments shows $486 in general payments to Dr. Breyer from 7 companies from 2016 to 2025. The largest total came from Abiomed.

How long has Dr. Diana M. Breyer been practicing?

Dr. Breyer graduated from medical school in 1993, 33 years ago.

Does Dr. Diana M. Breyer do research?

Dmand AI links 1 publication to Dr. Breyer.

Who does Dr. Diana M. Breyer publish with?

Dr. Breyer's most frequent co-authors are Christopher B. Davis, MD (1 shared paper), Adeel Ahmad Faruki, MD (1 shared paper) and Read G. Pierce, MD (1 shared paper).

What insurance does Dr. Diana M. Breyer accept?

Dr. Breyer is in network with 16 carriers, including Elevance, United Healthcare and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 12. Check the plan with the practice before a visit.

Selling to pulmonary disease practices?

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