Doctor profile · Federal record
Dr. Brian Brennan, M.D.
Allergy & Immunology Physician (CMS: Allergy/Immunology) · Pediatrics Physician · Morris, MN
- NPI 1376536920
- Accepts Medicare
- MIPS 85.2 / 100 · 2023
- 41 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
400 E 1St St
Morris, MN 562671408
(320) 589-1313
fax (320) 589-1065
Credentials & registration
- NPI registered
- August 2005 — 21 yrs on file
- Profile last updated
- November 1, 2018
- Year of graduation
- 1985 — 41 yrs since
- Specialty taxonomy
- 207K00000X — NUCC code
- State license (1)
- South Dakota #5795
- Medicaid
- SD #5900500
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1376536920. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
569
Distinct HCPCS
7
Medicare allowed
$9,587
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
95165 |
Professional service for preparation and provision of 1 or more antigens | 281 | 18 | $3 | |
94010 |
Test to measure expiratory airflow and volume | 73 | 55 | $8 | |
94729 |
Test to examine how well the lungs exchange gases | 64 | 61 | $9 | |
94727 |
Test to determine lung volumes using gas dilution or washout | 57 | 55 | $12 | |
94060 |
Test to measure expiratory airflow and volume changes before and after medication administration | 39 | 38 | $10 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 38 | 38 | $129 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 17 | 13 | $95 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 81. This provider delivers 7.0× the peer median.Open Payments
Industry payments received
All-time total
$20
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| GENZYME CORPORATION | 1 | $20.30 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
125
Patients
40
Total drug cost
$81,596
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Montelukast Sodium | Generic | 69 | 27 | $1,396 |
| Dupixent Pen (Dupilumab) | Brand | 21 | 0 | $79,371 |
| Fluticasone Propionate | Generic | 18 | 0 | $249 |
| Azelastine Hcl | Generic | 17 | 13 | $579 |
Hospital affiliations
Frequently asked questions
What is Dr. Brian Brennan's medical specialty?
Dr. Brian Brennan practices Allergy & Immunology Physician in Morris, MN.
Where does Dr. Brian Brennan practice?
Dr. Brian Brennan practices at 400 E 1St St, Morris, MN 562671408. Office phone: 3205891313.
What is Dr. Brian Brennan's NPI?
Dr. Brian Brennan's National Provider Identifier (NPI) is 1376536920, issued by NPPES.
Does Dr. Brian Brennan accept Medicare assignment?
Yes. Dr. Brian Brennan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Brian Brennan commonly perform?
Top Medicare-reported procedures in 2023: Professional service for preparation and provision of 1 or more antigens (HCPCS 95165); Test to measure expiratory airflow and volume (HCPCS 94010); Test to examine how well the lungs exchange gases (HCPCS 94729). Source: CMS Medicare Physician & Other Practitioners file.