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Dr. John Brennan, MD

Mount Pleasant, WI

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Brennan, Nephrologist in Mount Pleasant, WI?

    Dr. John Brennan, MD is a Nephrologist, who primarily practices in Mount Pleasant, WI. He is board certified. Dr. Brennan graduated from University of Chicago Division of the Biological Sciences The Pritzker School of Medicine and completed his residency at Loyola University Medical Center Program. Dr. Brennan is fluent in English and Spanish, and is currently seeing new patients. Dr. Brennan’s practice accepts Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Brennan’s office at (262) 687-8312.

    Where did Dr. Brennan go to medical school and complete their residency?

    • Residency: Loyola University Medical Center Program

    • Medical School: University of Chicago Division of the Biological Sciences The Pritzker School of Medicine

    What languages does Dr. Brennan speak?

    Dr. Brennan and their clinical team can communicate with patients in the following languages:

    • English

    • Spanish

    What conditions does Dr. Brennan treat?

    As a Nephrologist, 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.

    Also known as:

    • End-Stage Kidney Disease
    • Chronic Kidney Disease Stage 3b
    • Chronic Kidney Disease, Stage 4 (Severe)
    • Chronic Kidney Disease Stage 5
    • Chronic Kidney Disease, Stage 3a
    • Kidney Failure
    • Chronic Kidney Disease (CKD)
    • Helping Your Child Adapt to Life with Chronic Kidney Disease
    • Chronic Kidney Disease
    • ESRD
    • End-Stage Renal Failure
    • CKD Stage 3b
    • Moderate Chronic Kidney Disease
    • CKD Stage 4
    • Severe Chronic Kidney Disease
    • CKD Stage 5
    • End-Stage Renal Disease
    • CKD Stage 3a

    ICD-10 Codes:

    • N186: End stage renal disease
    • N1832: Chronic kidney disease, stage 3b
    • N184: Chronic kidney disease, stage 4 (severe)
    • N185: Chronic kidney disease, stage 5
    • N1831: Chronic kidney disease, stage 3a

    Also known as:

    • Dialysis Dependence
    • Dialysis
    • Helping Your Child Adapt to Life with Chronic Kidney Disease
    • Kidney Dialysis
    • Renal Replacement Therapy
    • On Dialysis

    ICD-10 Codes:

    • Z992: Dependence on renal dialysis

    Also known as:

    • Type 2 Diabetes with Kidney Disease
    • Type 2 Diabetes with Chronic Kidney Disease
    • Type 2 Diabetes
    • Diabetes Type 2
    • Diabetic Kidney Problems
    • Type 2 diabetes
    • Diabetic Nephropathy
    • Kidney Damage from Type 2 Diabetes
    • Type 2 Diabetes Kidney Complications
    • Diabetic Chronic Kidney Disease
    • Long-term Kidney Failure from Type 2 Diabetes
    • Type 2 Diabetes End-Stage Renal Disease
    • Diabetes Mellitus Type 2
    • Adult-Onset Diabetes
    • Non-Insulin Dependent Diabetes

    ICD-10 Codes:

    • E1121: Type 2 diabetes mellitus with diabetic nephropathy
    • E1122: Type 2 diabetes mellitus with diabetic chronic kidney disease
    • E119: Type 2 diabetes mellitus without complications

    Also known as:

    • High Blood Pressure
    • Hypertension
    • Primary Hypertension
    • Essential Hypertension

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Osteoarthritis
    • Degenerative Joint Disease
    • Wear-and-Tear Arthritis
    • Hand Arthritis

    ICD-10 Codes:

    • M19049: Primary osteoarthritis, unspecified hand

    Also known as:

    • Acute Kidney Failure
    • Kidney Failure
    • Acute Renal Failure
    • Sudden Kidney Failure

    ICD-10 Codes:

    • N179: Acute kidney failure, unspecified

    Also known as:

    • Atrial Fibrillation
    • Afib
    • A-fib
    • Irregular heart rhythm

    ICD-10 Codes:

    • I4891: Unspecified atrial fibrillation

    Also known as:

    • Therapeutic Drug Monitoring
    • Drug level testing
    • Medication monitoring
    • Therapeutic drug management

    ICD-10 Codes:

    • Z5181: Encounter for therapeutic drug level monitoring

    Also known as:

    • High Cholesterol
    • Cholesterol
    • Triglycerides
    • Hyperlipidemia
    • High lipids
    • Dyslipidemia

    ICD-10 Codes:

    • E785: Hyperlipidemia, unspecified

    Also known as:

    • Having a Kidney Transplant
    • Kidney Transplantation
    • Kidney Transplant
    • Renal transplant
    • Kidney replacement surgery
    • Post-kidney transplant

    ICD-10 Codes:

    • Z940: Kidney transplant status

    Also known as:

    • High Blood Pressure Caused by Kidney Disease
    • High Blood Pressure
    • Renal Hypertension
    • Kidney-Related High Blood Pressure
    • High Blood Pressure due to Kidney Problems

    ICD-10 Codes:

    • I151: Hypertension secondary to other renal disorders

    Also known as:

    • Lupus kidney disease
    • Kidney Disease
    • Lupus
    • Lupus nephritis
    • Kidney inflammation from lupus
    • Glomerulonephritis in SLE

    ICD-10 Codes:

    • M3214: Glomerular disease in systemic lupus erythematosus

    Also known as:

    • Protein in Urine
    • Urine and Urination
    • Proteinuria
    • Albuminuria
    • Foamy urine

    ICD-10 Codes:

    • R809: Proteinuria, unspecified

    Also known as:

    • Low Sodium Levels
    • Fluid and Electrolyte Balance
    • Sodium
    • Hyponatremia
    • Low Blood Sodium
    • Sodium Deficiency

    ICD-10 Codes:

    • E871: Hypo-osmolality and hyponatremia

    Which procedures does Dr. Brennan perform as a Nephrologist?

    As a Nephrologist, procedures performed by a Dr. John Brennan may include:

    For detailed information, please contact Dr. Brennan's office.

    Does Dr. Brennan accept my insurance?

    Dr. Brennan accepts most major insurance plans. Important: Please call our office at (262) 687-8312 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Brennan accept in Mount Pleasant, WI?

    Dr. Brennan in Mount Pleasant, 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

    • Community Care Health Plan (CA)

    • Community Care Plan

    • CVS Health (formerly Aetna)

    • Elevance Health Inc. (formerly Anthem)

    • Express Scripts

    • Health Care Service Corporation (HCSC)

    • Humana

    • Medicare

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Brennan's office located?

    Dr. John Brennan's Primary Practice

    3803 Spring St Ste 600

    Mount Pleasant, WI 53405

    (262) 687-8312

    Get Directions

    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 1154351153.

    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. John Brennan's specialty?

    Dr. Brennan is a Nephrologist near Mount Pleasant, WI. An internist who manages disorders related to the kidneys, including high blood pressure, fluid and mineral balance, and dialysis for waste removal when kidney function is impaired. This specialist also collaborates with surgeons regarding kidney transplantation. Contact Dr. Brennan to book an appointment today.

    Is this Dr. John Brennan affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Brennan is affiliated with Ascension All Saints Hospital - Spring Street Campus 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 Nephrologist?

    Explore Nephrologist 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 John Brennan accepting new patients in Mount Pleasant, WI?

    Yes, Dr. John Brennan is accepting new patients at this time.

    Does Dr. John Brennan offer online booking?

    Please contact Dr. Brennan's office at (262) 687-8312 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with John Brennan?

    Please contact Dr. Brennan's office at (262) 687-8312 for information regarding telehealth appointment availability or for scheduling assistance.

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