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Mary DeHerrera Codo, MD

Endocrinology

4.9
506 Ratings
Practices In: Naperville
Patients Seen: Ages 18+

My goal is to pro­vide com­pas­sion­ate care to each patient along with mak­ing each office vis­it a pos­i­tive expe­ri­ence. I believe patients should be engaged in their health care and wel­come them in the deci­sion mak­ing process in order to opti­mize their care.

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 and our exclu­sive dis­counts at your next visit.

Care Team

Need an appointment sooner? While your primary care provider or specialist are the anchor of your care team, their advanced practice providers and physician partners are available to provide care when you need it.

Anne Maynard, APN

Endocrinology
4.9

Practices In:

Glen Ellyn Naperville

Schedule Online

Diane Ellig, NP-C

Endocrinology
4.6

Practices In:

Hinsdale Lisle

Schedule Online

Jasmine Anish, NP

Endocrinology

Practices In:

Glen Ellyn

Schedule Online

Locations

location icon

Naperville

1020 E. Ogden Ave.

Suite 100

Naperville, Illinois 60563

630-789-4910

(Endocrinology)
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Care Team

Need an appointment sooner? While your primary care provider or specialist are the anchor of your care team, their advanced practice providers and physician partners are available to provide care when you need it.

Anne Maynard, APN

Endocrinology
4.9

Practices In:

Glen Ellyn Naperville

Schedule Online

Diane Ellig, NP-C

Endocrinology
4.6

Practices In:

Hinsdale Lisle

Schedule Online

Jasmine Anish, NP

Endocrinology

Practices In:

Glen Ellyn

Schedule Online
General Info
Board Certifications
Endocrinology
Languages
English
Awards & Accolades
Fellow of the American Association of Endocrinology 2000
Clinical Interests

Adren­al Bone Dis­or­ders, Dia­betes, Diag­nos­tic and Per­son­al Con­tin­u­ous Glu­cose Mon­i­tor­ing, Insulin Pump Man­age­ment, Insulin Pump Ther­a­py, Parathy­roid and Pitu­itary Thyroid

Personal Interests

I am avid read­er, love movies and enjoy spend­ing time with my fam­i­ly and friends.

Memberships
American Diabetes Association American Association of Clinical Endocrinology Endocrine Society
Education
Editorial
School
University of Illinois Graduation Date: 1988 Degree: MD
Residency
Loyola University Resident Physician
Fellowships
Loyola University Endocrinology

Provider's Contributions

5 Things to Know About Thyroid Disease in Women Women's Health March 2025

Clinical Expertise

Procedures

Insulin Pump Therapy

Conditions

Adrenal Disorders, Bone Disorders, Continuous Glucose Monitoring, Diabetes, Insulin Pump Therapy, Parathyroid Disorders, Pituitary Disorders, Polycystic Ovary Syndrome (PCOS), Thyroid Disorders

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
500 Ratings

Provider discussed treatment options

4.9
503 Ratings

Provider explained things clearly

4.9
504 Ratings

Provider included you in decisions

4.9
485 Ratings

Provider showed concern

4.9
506 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.
"Dr. Codo is thorough and caring."
5
May. 7, 2025
"Excellent experience"
5
May. 4, 2025
"Dr. Codo is an amazing person and Dr. I enjoy my appts with her. She's knowledgeable about my issues and listens very well."
5
May. 3, 2025
"Dr Mary Codo has been my very excellent Endocrinologist since she first visited my bedside at Edward Hospital in Naperville, in early October of 2019. She was the very needed qualified and dedicated doctor that I needed to help me navigate the care and management of my newly discovered Type 2 Diabetes. I never felt shamed for having that condition, as I was given medication and education about the disease. De. Codo and the entire hospital staff that attended me ;during my 14-day stay) were so very knowledgeable and encouraging as they providers me with the tools I desperately needed to improve my condition. Education I received in hospital, combined with my background in Foods & Nutrition (from my degree in Family and Consumer Science Education), was a winning combination. Thanks so much to Dr. Codo and her Nurse Practitioner,Alison Rosales, and the entire staff at their office at 1020 E. Ogden Ave., Suite 100, Naperville, IL 60563, for all the excellent 6 month follow up appointments since then!!"
5
May. 3, 2025
"Had a great experience with Dr. Codo! My first time visiting and I was nervous she would just tell me to lose weight just like other providers but she showed compassion and really listened to my progress and goals for myself and presented me with different options on how to proceed."
5
May. 1, 2025
"Dr. Codo is a very caring and understanding doctor. She takes her time to explain test results and medications changes."
5
Apr. 25, 2025
"Dr. Codo is an excellent physician! Very thorough and knowledgeable, and great people skills!"
5
Apr. 24, 2025
"It is always a pleasure to see Dr. Codo."
4.8
Apr. 19, 2025
"Dr Codo left made me feeling confident and reassured about next steps. She is terrific! Personable, professional and competent"
5
Apr. 19, 2025
"Excellent experience all around."
5
Apr. 17, 2025
"Dr Mary Codo is outstanding to work with. She offers clear explanations regarding the treatment program and then listens and answers all questions. She seems to be very thorough in her assessment and plan. I feel very comfortable that she Is working to achieve the best result for me."
5
Apr. 17, 2025
"I cannot say ENOUGH the great staff at Dr. Codo's office. Friendly, helpful, and pleasant to deal with!"
5
Apr. 15, 2025
"My experience was very good professional people very nice and kind made me feel very comfortable"
5
Apr. 14, 2025
"Dr.Codo is very pleasant."
5
Apr. 13, 2025
"Dr. Codo is very knowledgeable, I had questions and she answered them and explained my condition. I know that I am in good hands with her. I was scared but then felt at ease at the consult. Will see what our plan together is, and am grateful to have her on my Team to go forward. Thank You Dr. Codo!"
5
Apr. 12, 2025
"Dr Codo takes the time to explain things and to listen"
5
Apr. 11, 2025
"I feel that Doctor Mary Codo and her staff are very professional and well put together I really appreciate working with them to improve my health I thank God for them keep up the great work"
5
Apr. 9, 2025
"Dr Codo is a great doctor. Period."
5
Apr. 7, 2025
"It was my first visit and Dr Codo was very thorough and answered all my questions and then some."
5
Mar. 30, 2025
"Everyone at this office is amazing. They are cheerful, friendly and positive as well as attentive. I always enjoy my visits here."
5
Mar. 29, 2025
"Dr Codo provided outstanding care."
5
Mar. 29, 2025
"Dr Codo is wonderful!"
5
Mar. 27, 2025
"Doctor Codo is very kind, knowledgeable and caring."
4.8
Mar. 27, 2025
"Dr. Codo is wonderful."
5
Mar. 25, 2025
"Dr Codo is great!"
5
Mar. 21, 2025
"I LOVE Dr Codo. She is the Best!"
5
Mar. 21, 2025
"Professional, Listener, Caring, Informative"
5
Mar. 20, 2025
"A very good visit."
4.8
Mar. 19, 2025
"Great doctor. You are just LUCKY if you get her"
5
Mar. 14, 2025
"Dr. Codo is always very thorough and makes me feel very cared for. I have a complex medical history and I always feel like I can trust her and I am in good hands with her. She explains to me why she does certain tests and the care she is providing for me. I appreciate this very much."
5
Mar. 10, 2025
"Visit went well"
4
Mar. 9, 2025
"She listened to my concerns, answered any questions I had and included my input in my plan of care."
5
Mar. 2, 2025
"Dr Codo was thorough in explaining care plan. "
5
Mar. 2, 2025
"From the moment you walk into the office until the time you leave after your appointment, you are made to feel cared for acknowledged and given wonderful feedback and information"
5
Feb. 27, 2025
"Dr Codo is the best!"
5
Feb. 27, 2025
"Very kind, considerate, and understanding"
5
Feb. 27, 2025
"Doctor was genuinely interested in me as a person and not just my condition. Felt very at ease."
5
Feb. 23, 2025
"Dr. Codo is fantastic! Such a good listener, so reassuring and projects competence and compassion."
5
Feb. 21, 2025
"Very satisfied"
5
Feb. 20, 2025
"Been with Dr. Codo for many years."
5
Feb. 19, 2025
"I enjoy my annual visit with Dr. Codo. She made sure that I had the proper blood work done prior to my visit so we could discuss how my health is."
5
Feb. 16, 2025
"Excellent listener, took my feelings into account, answered all of my questions."
5
Feb. 12, 2025
"She listened to all my concerns and answered about my concerns."
5
Feb. 9, 2025
"Dr Codo is always very attentive and pays close attention to my care and to me. She remembers my history well and listens to my concerns."
5
Feb. 7, 2025
"Love Dr Codo so much"
5
Feb. 6, 2025
"Dr. Codo is a great doctor I feel very confident that I'm getting great care with her."
5
Jan. 30, 2025
"Great Dr."
5
Jan. 29, 2025
"I have never experienced any concerns with Dr Codo. She is always engaging and supportive."
5
Jan. 29, 2025
"I've been a patient of Dr Codo's for 30+ years. She always takes time to listen to and fully answer any questions I have. She has always adjusted my prescription dose when needed perfectly. She always gives me a thorough exam, aware of my heart murmur, etc. Dr Codo is very easy to talk to, very pleasant & I highly recommend her."
5
Jan. 27, 2025
"Dr.Codo is very kind,personable,and a pleasure to visit."
5
Jan. 26, 2025
"Great listener. Very patient and informative."
5
Jan. 26, 2025
"Dr Codo keeps me informed, knows my history, explains any options I might have. She treats me as if I was her favorite patient. 5 star!!"
5
Jan. 25, 2025
"Always very attentive to my concerns. Dr Codo is an asset to Duly group."
5
Jan. 24, 2025
"Dr. Codo is always very thorough and professional. She is helpful, encouraging and proactive."
5
Jan. 23, 2025
"Dr Codo and her staff are very welcoming and friendly. Dr Codo is an excellent physician."
5
Jan. 22, 2025
"I had a very good visit with Dr. Codo."
5
Jan. 19, 2025
"Dr. is a good listener and responds thoughtfully"
5
Jan. 15, 2025
"Dr D is the best!"
5
Jan. 11, 2025
"Dr. Codo is a wonderful doctor!"
5
Jan. 11, 2025
"Dr.Codo is excellent in all aspects. Very knowledgeable and helpful."
5
Jan. 7, 2025
"Dr Codo is the best!"
5
Jan. 7, 2025
"Dr. Codo is the best doctor. She is kind and caring."
5
Jan. 5, 2025
"Dr.Codo listened throughly to my questions. Loved that she helped me put on my socks and I didn't ask her to!"
5
Dec. 21, 2024
"Dr Codo is an excellent Physician"
5
Dec. 21, 2024
"Dr Codo is an absolute professional who also displays an unexpected aura of true concern which is not always the case for a highly trained specialist like this"
5
Dec. 15, 2024
"All good"
5
Dec. 12, 2024
"Dr Codo is the best endocrinologist. I've seen for over 20 yrs"
4.4
Dec. 10, 2024
"Dr. Codo was very informative, knowledgeable, and personable. I like her a lot!"
5
Dec. 8, 2024
"Professional Listener Knowledgeable"
5
Dec. 5, 2024
"Dr. Codo is a caring and very knowledgeable physician."
5
Dec. 5, 2024
"Everything was Great!"
5
Nov. 29, 2024
"Dr Codo = EXCELLENCE!Very grateful to have been aligned with her care."
5
Nov. 27, 2024
"Doctor was wonderful!"
5
Nov. 26, 2024
"Dr Codo is the best. Always makes sure I understand all aspects of my treatment"
5
Nov. 25, 2024
"Excellent doctor"
5
Nov. 19, 2024
"Always a good experience!"
5
Nov. 18, 2024
"Excellent doctor"
5
Nov. 17, 2024
"Wonderful doctor"
5
Nov. 16, 2024
"Good"
5
Nov. 15, 2024
"Ver warm and compassionate as well as expert doctor. Her staff is also kind, professional and efficient."
5
Nov. 13, 2024
"Dr. Codo is the best, helped me understand my condition and helped me decide on treatment"
5
Nov. 10, 2024
"Nothing new to report. Always good at this doctor"
5
Nov. 6, 2024
"Dr. Codo is a warm, personable specialist who listens to her patients and provides excellent care. This is why she is my endocrinologist of choice for the last 23 years!"
5
Nov. 4, 2024
"I would never leave Duly because of this Doctor"
5
Nov. 1, 2024
"Very polite and efficient technician"
5
Oct. 25, 2024
"Always a great experience at Dr. Codo's office!"
5
Oct. 24, 2024
"Dr. Codo DeHerrera in Naperville is a great Endocrinologist:"
5
Oct. 23, 2024
"Dr. Codo is a great listener and explains things very clearly"
5
Oct. 12, 2024
"Dr. is a great Dr. I feel safe and I know she cares about me."
5
Oct. 8, 2024
"Love Dr Mary Codo!"
5
Oct. 4, 2024
"Everything went well"
5
Sep. 26, 2024
"Good"
5
Sep. 22, 2024
"The doctor is wonderful! She is so thorough, kind, uses test results to guide her and what needs to be done."
5
Sep. 17, 2024
"Dr Codo is a very caring person.. She listens and explains everything in an easy to understand way.."
5
Sep. 15, 2024
"None Finer than Dr. Codo"
5
Sep. 15, 2024
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