Brian A. Brennan, M.D.
Allergy & Immunology Physician · Morris, MN
Brian A. Brennan, M.D. is an allergy & immunology physician with a practice address in Morris, Minnesota, and NPI 1376536920, issued on Aug 30, 2005. Check the license on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Brian A. Brennan
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- 5795 SD
Self-reported in NPPES; status is on the state search - Practice location
- 400 E 1St St, Morris, MN 56267
- Phone
- (320) 589-1313
- Enumerated
- Aug 30, 2005
- Record last updated
- Nov 1, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (320) 589-1065
- Medicaid ID
- 5900500 SD
- Medicare enrollment
- Enrolled (PECOS I20150701002186); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 85 in Minnesota → Look up another NPI →
Also registered at 400 E 1St St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Bailey Becker, PTPhysical Therapist1326902081
- Benjamin Berdal, DPTPhysical Therapist1164386405
- Ashley Berger, LMFTMarriage & Family Therapist1588062707
Verify Brian A. Brennan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical PracticeCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
316 Medicare Part D claims for 83 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Montelukast Sodium74 claims
- Dupixent Pen49 claims
- Dulera32 claims
- Fluticasone Propionate17 claims
- Budesonide-Formoterol Fumarate16 claims
- Levocetirizine Dihydrochloride16 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $20.30
1 payment: food and beverage; the largest payer was Genzyme Corporation. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Prairie Ridge Hospital And Health ServicesEvansville, MN · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Brian A. Brennan among 85 allergy & immunology physician records in Minnesota
Brian A. Brennan, M.D. is one of 85 allergy & immunology physician records with a practice address in Minnesota. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1985 · median 2004 among the 56 with a school on file
- Record last updated2018 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 allergy & immunology physician records list a practice address in Morris
They are 2 of the 126 NPPES records with a practice address in Morris, and 85 allergy & immunology physician records in Minnesota.
All 85 in Minnesota → Every provider in Morris → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Edward Green, MDMorris, MN 562671235142308
- Eyas Abla, M.D,Saint Cloud, MN 563031134407430
- Paul Faybusovich, D.OSaint Cloud, MN 563031497109219
- Stephen Leslie, M.D.St Cloud, MN 563031366479032
- Amy Ellingson, M.D.Willmar, MN 562011417032160
- Minto Porter, MDBrainerd, MN 564011790776623
- Richard Crockett, MDMankato, MN 560011508993536
- Srinivasan Ramanuja, M.D.Mankato, MN 560011720184849
Common questions
What is Brian A. Brennan, M.D.'s NPI number?
Brian A. Brennan, M.D.'s National Provider Identifier (NPI) is 1376536920, issued on Aug 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Brian A. Brennan, M.D. located?
The NPPES record lists a practice address at 400 E 1St St, Morris, MN, 56267. Phone: (320) 589-1313. Providers update this record themselves, so call before visiting.
How can I verify Brian A. Brennan, M.D.'s license?
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 Brian A. Brennan, M.D. prescribe under Medicare Part D?
In 2024, Brian A. Brennan, M.D. had 316 Medicare Part D claims for 83 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
What is Brian A. Brennan, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.