BB
34 Years of Experience
Accepting patients
Who is Dr. Brennan, Allergist & Immunologist in Fergus Falls, MN?
Dr. Brian Brennan, MD is an Allergist & Immunologist, who primarily practices in Fergus Falls, MN with 2 additional practice locations. He has been practicing for over 34 years. Dr. Brennan completed his residency at Georgetown University-Pediatrics. Dr. Brennan is fluent in English, and is currently seeing new patients. Dr. Brennan’s practice accepts Medicare, Aetna, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Brennan’s office at (320) 589-1313.
Where did Dr. Brennan go to medical school and complete their residency?
Residency: Georgetown University-Pediatrics
What languages does Dr. Brennan speak?
Dr. Brennan and their clinical team can communicate with patients in the following languages:
English
What conditions does an Allergist & Immunologist like Dr. Brennan typically treat?
As an Allergist & Immunologist, Dr. Brennan diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Brennan. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- Allergic Rhinitis
- Hay Fever
- Allergy
- Nasal allergies
- Allergy rhinitis
- Chronic runny nose
- Pollen allergy
- Seasonal allergies
- Allergic rhinitis
ICD-10 Codes:
- J309: Allergic rhinitis, unspecified
- J301: Allergic rhinitis due to pollen
Also known as:
- Allergic Rhinitis
- Allergy
- Nasal allergy
- Chronic allergy symptoms
- Allergic reactions
ICD-10 Codes:
- J3089: Other allergic rhinitis
Also known as:
- Mild Persistent Asthma
- Severe Persistent Asthma
- Asthma
- Ongoing Mild Asthma
- Regular Mild Asthma
- Chronic Mild Asthma
- Chronic Severe Asthma
- Difficult-to-Treat Asthma
- Severe Asthma
ICD-10 Codes:
- J4530: Mild persistent asthma, uncomplicated
- J4550: Severe persistent asthma, uncomplicated
Also known as:
- COPD
- Chronic Obstructive Pulmonary Disease
- Chronic Lung Disease
- Emphysema and Chronic Bronchitis
ICD-10 Codes:
- J449: Chronic obstructive pulmonary disease, unspecified
Also known as:
- Chronic Cough
- Cough
- Persistent cough
- Long-lasting cough
- Ongoing cough
ICD-10 Codes:
- R053: Chronic cough
Also known as:
- Allergy Desensitization
- Allergy shots
- Immunotherapy for allergies
- Allergen desensitization therapy
ICD-10 Codes:
- Z516: Encounter for desensitization to allergens
What procedures does an Allergist & Immunologist like Dr. Brennan typically perform?
As an Allergist & Immunologist, procedures performed by Dr. Brian Brennan may include:
- Allergy Consultation
- Allergy Follow Up
- Allergy Shots
- Allergy Testing
- Insect Bite(s)
- Sinus Surgeon Consultation
- Sinus Surgeon Follow Up
- Sinus Surgery
Please contact Dr. Brennan's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.
Does Dr. Brennan accept my insurance?
Dr. Brennan accepts most major insurance plans. Important: Please call our office at (320) 589-1313 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Brennan accept in Fergus Falls, MN?
Dr. Brennan in Fergus Falls, MN accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Aetna
Blue Cross Blue Shield
Blue Cross Blue Shield of Illinois
Blue Cross Blue Shield of Michigan
Blue Cross Blue Shield of North Dakota
Elevance Health Inc. (formerly Anthem)
Medica Group
Medicare
PrimeWest Health
Unknown
View All Insurances
Where is Dr. Brennan's office located?
Dr. Brian Brennan's Primary Practice
712 S Cascade St
Fergus Falls, MN 56537
(320) 589-1313
What is Dr. Brennan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Brennan's National Provider Identifier (NPI) number is 1376536920.
What common questions do patients ask about Dr. Brennan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Brennan
What is Dr. Brian Brennan's specialty?
Dr. Brennan is a Allergist & Immunologist near Fergus Falls, MN.
What does an Allergist & Immunologist do?
An allergist-immunologist is well-versed in the assessment, physical examination, laboratory diagnosis, and treatment of immune system disorders. These conditions include, but are not limited to, eczema, asthma, anaphylaxis, rhinitis, and adverse reactions to food, medication, and insect stings. Furthermore, they manage immune deficiency diseases, whether acquired or congenital, issues with host defense, and challenges associated with autoimmune diseases, organ transplantation, or immune system malignancies.
Is this Dr. Brian Brennan affiliated with a ranked Castle Connolly Top Hospital?
No, Brennan is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Stevens Community Medical Center - Morris. Castle Connolly Top Hospitals are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see an Allergist & Immunologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see an Allergist & Immunologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Brian Brennan accepting new patients in Fergus Falls, MN?
Yes, Dr. Brian Brennan is accepting new patients at this time.
Does Dr. Brian Brennan offer online booking?
Please contact Dr. Brennan's office at (320) 589-1313 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Brian Brennan?
Please contact Dr. Brennan's office at (320) 589-1313 for information regarding telehealth appointment availability or for scheduling assistance.
Other Allergist & Immunologist Near Fergus Falls, MN

Pediatric Allergist & Immunologist
Dr. Chris Cleveland, MD is a Pediatric Allergist & Immunologist, who primarily practices in Fargo, ND with 2 additional practice locations. He is board certified.
Fargo, ND

Allergist & Immunologist
Dr. Woei Yeang Eng, MD is an Allergist & Immunologist, who primarily practices in Fargo, ND with 2 additional practice locations. He has been practicing for over 15 years and is board certified.
Fargo, ND
DD
Allergist & Immunologist
Dr. Danilo Dalan, MD is an Allergist & Immunologist, who primarily practices in Fargo, ND with 1 additional practice location. He has been practicing for over 32 years.
Fargo, ND