JF
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Fiedler, Internist in Lisle, IL?
Dr. John Fiedler, MD is an Internist, who primarily practices in Lisle, IL with 2 additional practice locations. He is board certified by the American Board of Internal Medicine. Dr. Fiedler graduated from Loyola University Chicago Stritch School of Medicine and completed his residency at Univ Of Mi Hosps & Hlth Ctrs, Internal Medicine. Dr. Fiedler is fluent in English, Korean, and Spanish, and is currently seeing new patients. Dr. Fiedler’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Fiedler’s office at (847) 742-3525.
What are Areas of Expertise for Dr. Fiedler?
Dr. John Fiedler, MD is a highly-rated, board-certified Internist 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. Fiedler empowers patients to confidently navigate their health journey, specializing in Preventive Medicine, Primary Care, Wellness Care, or comprehensive wellness support. Serving the Lisle/IL community, Dr. Fiedler is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Fiedler go to medical school and complete their residency?
Residency: Univ Of Mi Hosps & Hlth Ctrs, Internal Medicine | University Of Michigan Hospitals | University of Michigan Program
Medical School: Loyola Univ of Chicago Stritch Sch of Med, Maywood Il | Loyola University Chicago Stritch School of Medicine
Is Dr. Fiedler board certified in Internist?
Yes, Dr. John Fiedler, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Fiedler speak?
Dr. Fiedler and their clinical team can communicate with patients in the following languages:
English
Korean
Spanish
What conditions does Dr. Fiedler treat?
As a Internist, Dr. Fiedler 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. Fiedler. 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:
- Mixed High Cholesterol and Triglycerides
- Cholesterol
- Triglycerides
- Mixed hyperlipidemia
- Combined hyperlipidemia
- High lipids
ICD-10 Codes:
- E782: Mixed hyperlipidemia
Also known as:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
Also known as:
- Vitamin D Deficiency
- Low Vitamin D Levels
- Lack of Vitamin D
- Hypovitaminosis D
ICD-10 Codes:
- E559: Vitamin D deficiency, unspecified
Also known as:
- Routine Adult Health Checkup
- Health Checkup
- Adult physical exam
- Annual wellness visit for adults
- General adult medical exam
ICD-10 Codes:
- Z0000: Encounter for general adult medical examination without abnormal findings
Also known as:
- Mammogram for Breast Cancer Screening
- Health Screening
- Mammography
- Breast Cancer Screening (PDQ®)
- Mammograms
- Breast X-ray
- Breast Cancer Check
ICD-10 Codes:
- Z1231: Encounter for screening mammogram for malignant neoplasm of breast
Also known as:
- Hypothyroidism
- Congenital hypothyroidism
- Hypothyroidism (Underactive Thyroid)
- Underactive Thyroid
- Low Thyroid Function
ICD-10 Codes:
- E039: Hypothyroidism, unspecified
Also known as:
- High Fasting Blood Sugar
- Blood Glucose
- Impaired Fasting Glucose
- Prediabetes (Fasting)
- Borderline Diabetes (Fasting)
ICD-10 Codes:
- R7301: Impaired fasting glucose
Which procedures does Dr. Fiedler perform as a Internist?
As a Internist, procedures performed by an Dr. John Fiedler may include:
- Ambulatory Care Consultation
- Annual Check Up
- Annual Physical
- Aromatherapy
- Bladder and Bowel Management
- Blood Pressure Testing
- Bowel and Bladder Management
- Certified Medical Examination for Commercial Driver / Vessel Master
For detailed information, please contact Dr. Fiedler's office.
Does Dr. Fiedler accept my insurance?
Dr. Fiedler accepts most major insurance plans. Important: Please call our office at (847) 742-3525 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Fiedler accept in Lisle, IL?
Dr. Fiedler in Lisle, IL accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
CVS Health (formerly Aetna)
Express Scripts
Health Care Service Corporation (HCSC)
Humana
Medicare
Pharmacy Network Services
View All Insurances
Where is Dr. Fiedler's office located?
Dr. John Fiedler's Primary Practice
430 Warrenville Rd Ste 210
Lisle, IL 60532
(847) 742-3525
What is Dr. Fiedler's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Fiedler's National Provider Identifier (NPI) number is 1487623716.
What common questions do patients ask about Dr. Fiedler?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Fiedler
What is Dr. John Fiedler's specialty?
Dr. Fiedler is a Internist near Lisle, IL.
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Contact Dr. Fiedler to book an appointment today.Is this Dr. John Fiedler affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Fiedler is affiliated with Advocate Sherman 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 Internist?
Explore Internist 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 Fiedler accepting new patients in Lisle, IL?
Yes, Dr. John Fiedler is accepting new patients at this time.
Does Dr. John Fiedler offer online booking?
Please contact Dr. Fiedler's office at (847) 742-3525 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Fiedler?
Please contact Dr. Fiedler's office at (847) 742-3525 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. John Fiedler have?
Dr. John Fiedler is certified by the American Board of Internal Medicine.
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