FJ
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Jenssen, Critical Care Internist in Neenah, WI?
Dr. Fredrik Jenssen is a Critical Care Internist, who primarily practices in Neenah, WI with 1 additional practice location. Dr. Jenssen is fluent in English, and is currently seeing new patients. Dr. Jenssen’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Jenssen’s office at (920) 725-0077.
What languages does Dr. Jenssen speak?
Dr. Jenssen and their clinical team can communicate with patients in the following languages:
English
What conditions does a Critical Care Internist like Dr. Jenssen typically treat?
As a Critical Care Internist, Dr. Jenssen 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. Jenssen. 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:
- Acute Respiratory Failure with Low Oxygen
- Acute and Chronic Respiratory Failure with Low Oxygen
- Respiratory Failure
- Sudden lung failure with low oxygen
- Hypoxic respiratory failure
- Acute breathing failure with hypoxia
- Sudden and Long-Term Lung Failure with Low Oxygen
- Acute and Chronic Hypoxic Respiratory Failure
- Ongoing Breathing Failure with Low Oxygen
ICD-10 Codes:
- J9601: Acute respiratory failure with hypoxia
- J9621: Acute and chronic respiratory failure with hypoxia
Also known as:
- Sepsis
- Blood Poisoning
- Septicemia
- Systemic Bacterial Infection
ICD-10 Codes:
- A419: Sepsis, unspecified organism
Also known as:
- Cardiogenic Shock
- Shock
- Heart-related shock
- Cardiac shock
- Circulatory collapse from heart
ICD-10 Codes:
- R570: Cardiogenic shock
What procedures does a Critical Care Internist like Dr. Jenssen typically perform?
As a Critical Care Internist, procedures performed by Dr. Fredrik Jenssen may include:
- Arterial Line Placement
- Critical Care Consultation
- Critical Care Follow Up
- Intensive Critical Care Consultation
- Intensive Critical Care Follow Up
Please contact Dr. Jenssen's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.
Does Dr. Jenssen accept my insurance?
Dr. Jenssen accepts most major insurance plans. Important: Please call our office at (920) 725-0077 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Jenssen accept in Neenah, WI?
Dr. Jenssen in Neenah, WI accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Centene Corporation
Elevance Health Inc. (formerly Anthem)
Federal government of the United States
Humana
Medicare
State of Wisconsin
UMR Administered Payer
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Jenssen's office located?
What is Dr. Jenssen's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Jenssen's National Provider Identifier (NPI) number is 1881007656.
What common questions do patients ask about Dr. Jenssen?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Jenssen
What is Dr. Fredrik Jenssen's specialty?
Dr. Jenssen is a Critical Care Internist near Neenah, WI.
What does a Critical Care Internist do?
An internist specializing in the diagnosis, treatment, and support of patients with multiple organ dysfunction. This specialist may hold administrative responsibilities within intensive care units and plays a key role in facilitating and coordinating patient care among primary physicians, critical care staff, and other specialists.
Is this Dr. Fredrik Jenssen affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Jenssen is affiliated with Thedacare Regional Medical Center-Appleton, Thedacare Regional Medical Center-Neenah, Froedtert Hospital which are a Castle Connolly Top Hospitals. 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
When to see a Critical Care Internist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Critical Care Internist. 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 Fredrik Jenssen accepting new patients in Neenah, WI?
Yes, Dr. Fredrik Jenssen is accepting new patients at this time.
Does Dr. Fredrik Jenssen offer online booking?
Please contact Dr. Jenssen's office at (920) 725-0077 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Fredrik Jenssen?
Please contact Dr. Jenssen's office at (920) 725-0077 for information regarding telehealth appointment availability or for scheduling assistance.
Other Critical Care Internist Near Neenah, WI
JM
Critical Care Internist
Dr. Joel Mccauley, MD is a Critical Care Internist, who primarily practices in Appleton, WI with 2 additional practice locations. He is board certified.
Appleton, WI

Pulmonologist
Dr. Robert Nonn, MD is a Pulmonologist, who primarily practices in Neenah, WI with 2 additional practice locations. He is board certified.
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JM
Critical Care Internist
Dr. Jennifer Minor, MD is a Critical Care Internist, who primarily practices in Appleton, WI with 1 additional practice location.
Appleton, WI