Sean M. Brennan, M.D.
Emergency Medicine Physician · Owatonna, MN
Sean M. Brennan, M.D. is an emergency medicine physician with a practice address in Owatonna, Minnesota, and NPI 1457559684, issued on Jul 10, 2007. Check the license (Minnesota 56274, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Sean M. Brennan
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 56274 MN
42245 AZ
13215 NV
Self-reported in NPPES; status is on the state search - Practice location
- 2200 NW 26TH St, Owatonna, MN 55060
- Phone
- (507) 451-1120
- Enumerated
- Jul 10, 2007
- Record last updated
- Jan 7, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130726000463); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,348 in Minnesota → Look up another NPI →
Also registered at 2200 NW 26TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shada Ahrar, MDFamily Medicine Physician1871156224
- Megan Alm, PAPhysician Assistant1467926618
- Janet Anderson-Beckman, MDFamily Medicine Physician1912968124
- Scott Bangs, MDFamily Medicine Physician1912967662
- Mallory Berry, APRN-CNPNurse Practitioner1356814271
- Karl Blomquist, MDFamily Medicine Physician1730149485
Verify Sean M. Brennan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 56274Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% more Medicare Part D claims than the average emergency medicine physician in 2024
248 Medicare Part D claims for 185 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 39 claims were for opioids.
Most prescribed
- Oxycodone Hcl27 claims
- Prednisone27 claims
- Ondansetron Odt19 claims
- Cephalexin18 claims
- Amoxicillin-Clavulanate Potass12 claims
- Doxycycline Monohydrate12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Mayo Clinic Health System-Southeast Minnesota RegionAlbert Lea, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sean M. Brennan among 1,348 emergency medicine physician records in Minnesota
Sean M. Brennan, M.D. is one of 1,348 emergency medicine physician records with a practice address in Minnesota. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 37% of them.
- NPI issued2007 · 37% of these records are older, 57% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2006 · median 2012 among the 818 with a school on file
- Record last updated2021 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Minnesota
There are 1,348 emergency medicine physician records in Minnesota.
All 1,348 in Minnesota → Every provider in Owatonna → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Mary Akinyemi, MDOwatonna, MN 550601518927268
- Kim Baker, MDOwatonna, MN 550601205897428
- Donald Buisman, MDOwatonna, MN 550601770565533
- Kyle Bertram, DONorthfield, MN 550571003319047
- John Collingham, M.D.Northfield, MN 550571356379721
- Jennifer Fischer, MDNorthfield, MN 550571306872197
- Donald Lum, MDNorthfield, MN 550571881648749
- Monty Seper, MDNorthfield, MN 550571871543371
Common questions
What is Sean M. Brennan, M.D.'s NPI number?
Sean M. Brennan, M.D.'s National Provider Identifier (NPI) is 1457559684, issued on Jul 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Sean M. Brennan, M.D. located?
The NPPES record lists a practice address at 2200 NW 26TH St, Owatonna, MN, 55060. Phone: (507) 451-1120. Providers update this record themselves, so call before visiting.
How can I verify Sean M. Brennan, M.D.'s license?
NPPES lists Minnesota license number 56274, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sean M. Brennan, M.D. prescribe under Medicare Part D?
In 2024, Sean M. Brennan, M.D. had 248 Medicare Part D claims for 185 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.