Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Jessen, Allergist & Immunologist in Freeport, IL?
Dr. Timothy Jessen, MD is an Allergist & Immunologist, who primarily practices in Freeport, IL with 2 additional practice locations. He is board certified by the American Board of Allergy and Immunology and American Board of Internal Medicine. Dr. Jessen graduated from University of Illinois College of Medicine and completed his residency at Univ Of Mi Hosps & Hlth Ctrs, Allergy And Immunology; Spectrum Hlth-Blodgett Campus, Internal Medicine; St Mary'S Mercy Med Ctr, Flexible Or Transitional Year. Dr. Jessen is fluent in English and Spanish, and is currently seeing new patients. Dr. Jessen’s practice accepts Medicare, Aetna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Jessen’s office.
What are Areas of Expertise for Dr. Jessen?
Dr. Timothy Jessen, MD is a highly-rated, board-certified Allergist & Immunologist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Jessen empowers patients to confidently navigate their health journey, specializing in Asthma & Allergy, or comprehensive wellness support. Serving the Freeport/IL community, Dr. Jessen is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Jessen go to medical school and complete their residency?
Residency: Univ Of Mi Hosps & Hlth Ctrs, Allergy And Immunology; Spectrum Hlth-Blodgett Campus, Internal Medicine; St Mary'S Mercy Med Ctr, Flexible Or Transitional Year | St Mary's Hospital and Medical Center Program
Medical School: University Of Il Coll Of Med- Chicago Il | University of Illinois College of Medicine
Is Dr. Jessen board certified in Allergist & Immunologist?
Yes, Dr. Timothy Jessen, MD is board certified by the American Board of Allergy and Immunology , American Board of Internal Medicine
What languages does Dr. Jessen speak?
Dr. Jessen and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Jessen treat?
As a Allergist & Immunologist, Dr. Jessen 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. Jessen. 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.
Also known as:
- Selective IgG Subclass Deficiency
- Immune System and Disorder
- Immunoglobulin G Subclass Deficiency
- IgG Subclass Deficiency
ICD-10 Codes:
- D803: Selective deficiency of immunoglobulin G [IgG] subclasses
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:
- Abnormal Lung Function Test
- Lung Disease
- Irregular Pulmonary Function Study
- Unusual Breathing Test
- Lung Disease Diagnosis
ICD-10 Codes:
- R942: Abnormal results of pulmonary function studies
Also known as:
- Insect Allergy
- Allergy
- Insect Bites and Stings
- Insect bite allergy
- Insect sting allergy
- Insect hypersensitivity
ICD-10 Codes:
- Z91038: Other insect allergy status
Also known as:
- Hay Fever
- Pollen allergy
- Seasonal allergies
- Allergic rhinitis
ICD-10 Codes:
- J301: Allergic rhinitis due to pollen
Also known as:
- Common Variable Immunodeficiency (CVID)
- Immune System and Disorder
- Common variable immune deficiency
- CVID
- Acquired Hypogammaglobulinemia
ICD-10 Codes:
- D839: Common variable immunodeficiency, unspecified
Also known as:
- Antibody Deficiency
- Immune System and Disorder
- Immunoglobulin Deficiency
- Immune System Weakness
ICD-10 Codes:
- D806: Antibody deficiency with near-normal immunoglobulins or with hyperimmunoglobulinemia
Which procedures does Dr. Jessen perform as a Allergist & Immunologist?
As a Allergist & Immunologist, procedures performed by an Dr. Timothy Jessen may include:
- Allergy Consultation
- Allergy Follow Up
- Allergy Shots
- Allergy Testing
- Insect Bite(s)
- Sinus Surgeon Consultation
- Sinus Surgeon Follow Up
- Sinus Surgery
For detailed information, please contact Dr. Jessen's office.
Does Dr. Jessen accept my insurance?
Dr. Jessen accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Jessen accept in Freeport, IL?
Dr. Jessen in Freeport, IL 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
Corporate Services
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Medicare
State of Illinois
The Alliance
View All Insurances
Where is Dr. Jessen's office located?
What is Dr. Jessen's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Jessen's National Provider Identifier (NPI) number is 1831165034.
What common questions do patients ask about Dr. Jessen?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Jessen
What is Dr. Timothy Jessen's specialty?
Dr. Jessen is a Allergist & Immunologist near Freeport, IL. 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. Contact Dr. Jessen to book an appointment today.
Is this Dr. Timothy Jessen affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Jessen is affiliated with FHN Memorial Hospital which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They 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
Where can I learn more about Allergist & Immunologist?
Explore Allergist & Immunologist with 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 Timothy Jessen accepting new patients in Freeport, IL?
Yes, Dr. Timothy Jessen is accepting new patients at this time.
Does Dr. Timothy Jessen offer online booking?
Please contact Dr. Jessen's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Timothy Jessen?
Please contact Dr. Jessen's office for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Timothy Jessen have?
Dr. Timothy Jessen is certified by the American Board of Allergy and Immunology and American Board of Internal Medicine.
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