Dr. Sean M. Brennan, MD
- Medicare services, 2024
- 275
- Medicare patients, 2024
- 261
- Part D claims, 2024
- 248
- Hospital affiliations
- 2
- Medical groups
- 2
- Practice address
- 701 Hewitt Blvd, Red Wing, MN 55066
- Practice phone
- Call (651) 267-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mayo Clinic Health System - Red Wing
Red Wing, Minnesota
Find Dr. Brennan's professional email, personal email and mobile number
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Dr. Sean M. Brennan is an emergency medicine physician in Red Wing, Minnesota
Dr. Brennan practices at Mayo Clinic Health System - Red Wing in Red Wing, Minnesota.
Dr. Brennan's NPI, 1457559684, was assigned on July 10, 2007. Dr. Brennan holds Minnesota license 56274.
- NPI
- 1457559684NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3476608522
- NPI enumeration date
- July 10, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (651) 267-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 46
- Medical school graduation
- 2006
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sean M. Brennan practices at Mayo Clinic Health System - Red Wing in Red Wing, Minnesota
Dr. Brennan's primary practice is Mayo Clinic Health System - Red Wing, at 701 Hewitt Blvd, Red Wing, MN 55066 in Goodhue County. The practice phone is (651) 267-5000.
- Mayo Clinic Health System - Red Wing701 Hewitt Blvd, Red Wing, MN 55066 · Goodhue CountyPhone(651) 267-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Sean M. Brennan is affiliated with 5 sites of care and 2 medical groups
Dr. Brennan's primary practice is Mayo Clinic Health System - Red Wing in Red Wing, Minnesota. Dr. Brennan is also affiliated with Mayo Clinic Health System in Red Wing. The medical group on file is Mayo Clinic Health System in Red Wing. Dmand AI also links Dr. Brennan to 1 more hospital, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Sean M. Brennan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Brennan practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mayo Clinic Health System - Red Wing | Available with a free account |
| +4 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Sean M. Brennan is one of 1,097 emergency medicine physicians in Minnesota
Emergency medicine is Dr. Brennan's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Brennan's licenses on file in 3 states: Minnesota, Arizona and Nevada.
Specialties and state licenses
- Emergency medicine, MinnesotaPrimary
- Arizona license
- Family medicine, Nevada
Emergency medicine physicians near Dr. Brennan
Counts of emergency medicine physicians 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. Sean M. Brennan billed Medicare for 275 services in 2024
CMS data shows 275 Medicare services from Dr. Brennan across 4 procedure codes in 2024, for 261 Medicare patients. Medicare paid $27,908 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Brennan's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2412024: 27514%
Dr. Brennan compared with the Minnesota median for emergency medicine physicians, 2024
- Dr. Brennan
- Minnesota median
- Medicare services
- 275vs 23816% above
- Medicare patients
- 261vs 19832% above
- Part D claims
- 115vs 422.7 times
Medians across 1,063 emergency medicine physicians in Minnesota with Dmand AI profiles that report each measure.
Dr. Brennan'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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Brennan and other emergency medicine physicians in Minnesota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Sean M. Brennan treated 261 Medicare patients in 2024, average age 74
CMS counts 261 Medicare patients who saw Dr. Brennan in 2024. The largest group is 65 to 74, with 79 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 25% are also on Medicaid. Their average risk score is 1.89, 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. Brennan's median patient age at 73, with 55% women.
Dr. Brennan's Medicare patients by age, 2024
Dr. Brennan's Medicare patients by sex, 2024
- Women14054%
- Men12146%
Chronic conditions among Dr. Brennan's Medicare patients, 2024
- High blood pressure75%
- High cholesterol70%
- Chronic kidney disease48%
- Arthritis39%
- Mood disorders38%
- Anxiety36%
- Depression36%
- Diabetes36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Brennan'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
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Sean M. Brennan wrote 248 Medicare Part D claims in 2024
In 2024, Dr. Brennan wrote 248 Medicare Part D claims for 185 patients. 94% of them were for generic drugs. CMS names the drug for 115 of them, across 6 drugs with 11 or more claims each, at $665 in total drug cost. In 2023, CMS named 100 claims across 6 drugs.
Dr. Brennan's Part D claims by kind of drug, 2024
- Generic234 claims94%
- Brand-name14 claims6%
Dr. Brennan's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Brennan's Part D claims, 2024
- Opioids16%39 of 248 claims
- Antibiotics38%94 of 248 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1002024: 11515%
Drugs named by CMS: 6 in 2024, 6 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Sean M. Brennan takes part in Medicare
Dr. Brennan 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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Sources for Dr. Sean M. Brennan's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Sean M. Brennan
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. Sean M. Brennan's NPI number?
Dr. Sean M. Brennan's NPI number is 1457559684. It was assigned on July 10, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Sean M. Brennan?
Dr. Sean M. Brennan is an emergency medicine physician in Red Wing, Minnesota. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Sean M. Brennan practice?
Dr. Brennan practices at 701 Hewitt Blvd, Red Wing, MN 55066. Dr. Brennan's primary practice is Mayo Clinic Health System - Red Wing in Red Wing, Minnesota. Dmand AI also links Dr. Brennan to 1 hospital, 2 group practices and clinics and 1 medical group.
What is Dr. Sean M. Brennan's office phone number?
The practice phone on file for Dr. Brennan is (651) 267-5000.
What is Dr. Sean M. Brennan's medical license number?
Dr. Brennan holds Minnesota license 56274, one of the licenses on file in 3 states.
Which states has Dr. Sean M. Brennan been licensed in?
Dmand AI has state licenses on file for Dr. Brennan in Minnesota, Arizona and Nevada.
Which hospitals is Dr. Sean M. Brennan affiliated with?
Dr. Brennan is affiliated with Mayo Clinic Health System in Red Wing. Dmand AI links Dr. Brennan to 1 more hospital.
What medical group is Dr. Sean M. Brennan part of?
Dr. Brennan is linked to Mayo Clinic Health System in Red Wing. Dmand AI links Dr. Brennan to 1 more medical group.
Does Dr. Sean M. Brennan accept Medicare?
Yes. CMS data shows Dr. Brennan billed Medicare for 275 services in 2024, and Dr. Brennan accepts Medicare assignment.
How many Medicare patients does Dr. Sean M. Brennan see?
CMS counts 261 Medicare patients who saw Dr. Brennan in 2024, with an average age of 74.
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What services does Dr. Sean M. Brennan bill to Medicare?
In 2024, Dr. Brennan's most billed Medicare services were emergency department visit (99284), emergency department visit (99285) and emergency department visit (99283).
What drugs does Dr. Sean M. Brennan prescribe most?
In 2024 Medicare Part D data, Dr. Brennan's most prescribed drugs by claims were Oxycodone HCl, Prednisone and Ondansetron ODT.
How long has Dr. Sean M. Brennan been practicing?
Dr. Brennan graduated from medical school in 2006, 20 years ago.
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