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John Fiedler, MD

Internal Medicine

4.9
363 Ratings
Practices In: Elgin
Patients Seen: Ages 18+

Med­i­cine requires a strong rela­tion­ship between provider and patient. I strive to use evi­dence based med­i­cine in con­junc­tion with lifestyle mod­i­fi­ca­tion to achieve the most favor­able outcomes.

Qual­i­ty mat­ters when it comes to sup­ple­ments. Whether you’re new or expe­ri­enced with sup­ple­ments, trust­ed, qual­i­ty options can sup­port your immu­ni­ty, heart health, and nutri­ent intake. Duly has part­nered with Fullscript, offer­ing access to high-qual­i­ty sup­ple­ments deliv­ered direct­ly to your door. Ask your provider about Fullscript at your next vis­it and receive exclu­sive discounts.

Care Team

Need an appointment sooner? While Dr. Fiedler is the anchor of your care team, he works closely with advanced practice providers who are able to provide care when you need it.

Jessica Tomasiewicz, NP, MSN

Internal Medicine
4.9

Practices In:

Elgin

Schedule Online

Lindsey Santillo, PA-C

Internal Medicine
4.9

Practices In:

Elgin

Schedule Online

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Locations

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Elgin

745 Fletcher Drive

Suite 101

Elgin, Illinois 60123

847-742-3525

(Internal Medicine)
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Care Team

Need an appointment sooner? While Dr. Fiedler is the anchor of your care team, he works closely with advanced practice providers who are able to provide care when you need it.

Jessica Tomasiewicz, NP, MSN

Internal Medicine
4.9

Practices In:

Elgin

Schedule Online

Lindsey Santillo, PA-C

Internal Medicine
4.9

Practices In:

Elgin

Schedule Online
General Info
Hospital Affiliations
Board Certifications
Internal Medicine
Languages
English
Clinical Interests

Com­bin­ing the art of med­i­cine with lifestyle changes to opti­mize med­ical care.

Personal Interests

Fam­i­ly and friends, enjoy­ing the great out­doors, and sports/​fitness.

Memberships
American Medical Association Kane County Medical Society American College of Physicians Illinois State Medical Society
Advocate Sherman Hospital
1425 North Randall Road Elgin, Illinois 60123 (847) 742-9800 Get Directions
Ascension Saint Joseph Hospital, Elgin
77 North Airlite Street, Tuscan Woods Elgin, Illinois 60123 847-695-3200 Get Directions
Education
School
Loyola University Stritch School of Medicine Graduation Date: 1993 Degree: MD
University of Notre Dame Graduation Date: 2020 Degree: BS
Residency
University of Michigan Resident in Internal Medicine

Ratings

Ratings Category

The Patient Satisfaction Rating score is an average of all responses to care provider related questions on our independent rating system, the Press Ganey Patient Satisfaction Survey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Learn more about our patient satisfaction survey.

Patient Satisfaction Rating

4.9

Likelihood of recommending this provider

4.9
362 Ratings

Provider discussed treatment options

4.9
352 Ratings

Provider explained things clearly

4.9
357 Ratings

Provider included you in decisions

4.9
342 Ratings

Provider showed concern

4.9
362 Ratings

Comments

Comments are collected in our Press Ganey Patient Satisfaction Surveys. Patients are de-identified to protect confidentiality and patient privacy. Learn more about our patient satisfaction survey.
"Best Doctor and nurse ever!!"
5
Jun. 18, 2024
"Dr. John Fiedler is very thorough in his practice of examining all of the pertinent medical risk factors and diagnosing any possible problems during the exam."
4.6
Jun. 11, 2024
"Dr. Fiedler is an outstanding physician."
5
Jun. 11, 2024
"Really listen to me"
5
Jun. 4, 2024
"I'm always very happy with the care I received."
5
Jun. 1, 2024
"The doctor Is always very thorough, concerned, and gives me the opportunity to discuss any issues I may have."
5
Jul. 22, 2024
"Dr. Fiedler is incredibly caring, knowledgeable and supportive. The BEST!"
5
Jul. 21, 2024
"Dr Feidler is a GREAT doctor. He has been my doctor for over 25 years. Always get awesome care and understanding from him."
5
Jul. 18, 2024
"Always takes time to listen."
5
Jul. 16, 2024
"Dr. Fiedler is always interested in my health and well-being."
5
Jul. 16, 2024
"Dr Fiedler is a great Doctor, my Family has been to his Office for two generations now. I trust him completely as did my parents, and my son as well as my brother and his family."
5
Jul. 2, 2024
"Excellent service as usual!"
5
Sep. 28, 2024
"My current and past experiences with Dr Fiedler have been good."
5
Sep. 25, 2024
"Dr.John Fiedler and his nurse Jojo are fantastic. They help me alot with all my questions and medicines."
5
Sep. 25, 2024
"I appreciate that Dr. Fiedler knows me and has been caring for me for many years."
5
Sep. 24, 2024
"Dr. Fiedler is the very best primary physician I have ever had. He us friendly, straight forward with information, listens carefully to my concerns and ensures I understand what has been discussed and agreed upon before ending the appointment. I would recommend him to anyone!"
5
Sep. 23, 2024
"Always a good experience. Well run practice"
5
Sep. 22, 2024
"I have no problems with Dr.Fiedler or any of his staff"
5
Sep. 17, 2024
"I have been a patient of Dr. John Fiedler for more than 10 years. I have complete trust and respect for him,and I am extremely fortunate to have such a good person as my Primary Care Physician"
5
Sep. 15, 2024
"Dr Fiedler is always very personable and professional!"
5
Sep. 12, 2024
"Dr Fiedler is very thorough and easy to talk to. I feel like he listens to any concerns or questions I have"
5
Sep. 3, 2024
"Dr. Fiedler is a caring and knowledgeable clinician. He has always listened and followed up on any issues. He is excellent in every way."
5
Aug. 27, 2024
"Dr. John Fiedler is great!"
5
Oct. 28, 2024
"I always feel that Dr. Fiedler is on top of my issues and is well informed of test results etc."
5
Oct. 28, 2024
"Dr Fiedler is the best physician I have ever had! He is always very thorough. He answers all my questions and makes sure that I understand my options."
5
Oct. 27, 2024
"Dr Fiedler is the best doctor. Always listens and spends time reviewing all concerns."
5
Oct. 26, 2024
"Dr Fiedler is a very understanding Dr. Been a patient for over 25 years"
5
Oct. 19, 2024
"I have been visiting this office for over 20 years. The staff is great"
5
Oct. 11, 2024
"Nurse and doctor are wonderful"
5
Oct. 8, 2024
"Very good,very thoughtful"
5
Oct. 5, 2024
"Dr. Fiedler and his nurse are caring and give you time to express your concerns and explain everything so you understand. They are wonderful."
5
Nov. 13, 2024
"Alway pleasant and caring"
5
Nov. 13, 2024
"Always very informative and provides options for treatments"
5
Nov. 10, 2024
"Dr. Fiedler works to include me in the decision making process regarding my care. I appreciate that."
5
Nov. 8, 2024
"The practice is excellent in dealing with the patients. One hardly ever waits more than 3-5 minutes to be taken to a room where he will be seen. I have never waited more than 3 or 4 minutes."
5
Nov. 8, 2024
"Dr. Fiedler is a trusted and valued physician."
5
Nov. 5, 2024
"Dr. Fiedler is excellent. I would recommend Dr. Fiedler to friends and family."
5
Nov. 3, 2024
"He's the best"
5
Nov. 3, 2024
"Doctor Fiedler is GREAT"
5
Nov. 2, 2024
"Dr. Fiedler has been my doctor for over twenty years. I feel very comfortable seeing him, and he always shows a concern for my health and makes sure I have the necessary inoculations and tests."
5
Jan. 16, 2025
"Dr John has always been of the utmost kind and efficient in my care for all the years I have had him as my doctor since he joined the group after he graduated."
4.6
Jan. 12, 2025
"Have seen Dr. Fiedler for many years and respect his judgement."
5
Jan. 6, 2025
"John Fiedler is an excellent doctor!"
5
Jan. 3, 2025
"Dr John Fiedler always take time to lister to me and are very helpful to keep me as healthy as possible!! Thank you!"
5
Jan. 2, 2025
"Love the practice."
5
Dec. 20, 2024
"Dr. John Fiedler is AWESOME!"
5
Dec. 16, 2024
"Always have a good experience."
5
Dec. 15, 2024
"Excellent communication"
5
Dec. 13, 2024
"Excellent comprehensive physical. I feel like I was well cared for."
5
Dec. 4, 2024
"Dr Fiedler always listens and is always professional and through."
5
Feb. 27, 2025
"Always very good"
4.8
Feb. 24, 2025
"The doctor stopped and listened every time I spoke to pay attention."
5
Feb. 19, 2025
"Dr. Fiedler is wonderful as always."
5
Feb. 17, 2025
"I have been attending this practice for over 20 years. I started with Dr. Richard Fiedler. Then his son Dr. John Fiedler to present time. Both excellent Doctors. He spends time with you. Does not rush through."
5
Feb. 9, 2025
"My visits have always been very professional"
5
Feb. 8, 2025
"I am very pleased with my Doctor and his staff. I would go elsewhere if there was a problem."
5
Mar. 18, 2025
"Dr. Fiedler is always very thorough, professional, and discusses any concerns I have."
5
Mar. 16, 2025
"Very good experience. My questions were answered and some suggestions were made."
5
Mar. 15, 2025
"Great doctor communication"
5
Mar. 13, 2025
"All good, lots of personal attention"
5
Mar. 9, 2025
"Dr. Fiedler listens to me and gives me feedback in an understanding way."
5
Mar. 9, 2025
"Dr. Fiedler is the best doctor. He is a very caring person"
5
Mar. 8, 2025
"Great experience"
5
Mar. 7, 2025
"Everything went right on time"
4.8
May. 5, 2025
"Dr. Fiedler is really the best ! He listens and is really concerned and gave me all the time needed for this appointment and I did not feel rushed at all ."
5
May. 3, 2025
"I had few questions to be answered."
4.2
May. 3, 2025
"Jojo and Dr Fiedler are a great team and very responsive on Mycharts!!!"
5
Apr. 24, 2025
"Excellent physician in every possible way"
5
Apr. 23, 2025
"Been seeing Dr Fiedler for over 20 years. Wouldn't keep coming back if I didn't think he was the best."
5
Apr. 23, 2025
"I always get good patient services with my PCP. John T. Fiedler has been my primary for about 8 years give ot take. And he understands my medical problems, and will go beyond my treatment and answers any and all questions. And I would not trade him for anyone else at this time. Dr. Fiedler is one of the best Primaries I ever had. :)"
5
Apr. 23, 2025
"Dr. Fiedler did a thorough exam, explaining as he did. He was very professional and listened to my concerns."
5
Apr. 19, 2025
"As always, Dr, Fiedler provides excellent care. The main reason we stay with Duly."
5
Apr. 18, 2025
"Was happy to be seen same I needed exam"
5
Apr. 14, 2025
"Great experience"
5
Apr. 13, 2025
"Very thorough exam, one of best I have had."
4.8
Apr. 11, 2025
"Great doctor and nurse!"
5
Apr. 7, 2025
"Great people!!! Everyone !!"
5
Apr. 3, 2025
"Absolutely adore Dr John"
5
Apr. 1, 2025
"Very good experience----excellent Dr."
5
Mar. 31, 2025
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