William P Dagiantis, MD

Specialty: Internal Medicine

You may experience longer than usual wait times as we manage through this COVID-19 surge and staffing shortages. Thank you in advance for your patience and kindness. Get your vaccine, find testing information & see our current visitor policy.

Schedule an appointment

Have you seen this doctor before?

Please check all that apply to the patient:

- or -

Schedule now via phone

Schedule via LiveWell

- or -

Schedule now via phone



2285 Sequoia Drive

Aurora, IL 60506

Get directions

Office: 630-859-6910

Fax: 630-859-6811

Currently scheduling for this location

Primary location

2500 West Fabyan Parkway

Batavia, IL 60510

Get directions

Office: 630-879-2110

Fax: 630-762-4779

Make appointment at this location

Meet William P Dagiantis, MD

About me

  • SpanishGreek
  • Cholesterol MonitoringDiabetesHeart Disease
  • https://www.advocatehealth.com



  • University of Illinois
  • University of Illinois College of Medicine
  • University of Illinois College of Medicine

Board certifications

  • Internal Medicine

Hospital affiliations

  • Advocate Dreyer

Insurance accepted

  • AAH Preferred – Team Member Plan
  • AAH Select – Team Member Plan
  • AARP Medicare Advantage Access HMO
  • Aetna Coventry (Aetna Medicare) HMO
  • Aetna HMO
  • Aetna Medicare HMO
  • Aetna Medicare POS
  • Aetna Medicare PPO
  • Aetna Medicare Value Plan PPO
  • Aetna NAP - PPO
  • Aetna Open Choice PPO
  • Aetna Premier Care Network
  • Aetna Select
  • Aetna Signature Administrators PPO
  • Aetna SmartCare
  • Aetna State of Illinois HMO
  • Aetna State of Illinois Open Access Plus
  • Aetna State of Illinois PPO
  • Aetna Value Performance Network
  • Beech Street Network PPO
  • Benefit Plan Administrators (BPA)
  • Benefits Services and Systems, Inc
  • Blue Advantage HMO
  • Blue Choice Preferred
  • Blue Cross Community MMAI
  • Blue Cross HMO Illinois
  • Blue Cross Med Select PPO
  • Blue Cross Medicare Advantage HMO
  • Blue Cross Medicare Advantage HMO-POS
  • Blue Cross Medicare Advantage PFFS
  • Blue Cross Medicare Advantage PPO
  • Blue Cross Medicare Supplement PPO
  • Blue Medicare Advocate Health HMO
  • Blue Precision HMO
  • BlueCare Direct
  • Cigna APWU Health Plan Open Access Plus
  • Cigna EPO
  • Cigna Healthspring True Choice PPO
  • Cigna HMO
  • Cigna Open Access Plus
  • Cigna POS
  • Cigna PPO
  • Cofinity PPO
  • Coventry / FirstHealth
  • Coventry Advantra Medicare HMO
  • Coventry Health Care HMO
  • Coventry Health Care Open Access POS
  • Coventry Health Care POS
  • Coventry Health Care PPO
  • First Health (Coventry) Rental PPO
  • First Health Network PPO
  • FirstHealth / Coventry Personal Care
  • Galaxy Health Network PPO
  • Great West Healthcare - Cigna EPO
  • Great West Healthcare - Cigna Open Access Plus
  • Great West Healthcare - Cigna PPO
  • HealthLink PPO
  • HealthSmart Preferred PPO
  • HST Care Connect EPO
  • HST Care Connect PPO
  • Humana Choice POS
  • Humana ChoiceCare EPO
  • Humana ChoiceCare POS
  • Humana ChoiceCare PPO
  • Humana Community Select HMO
  • Humana Gold Choice PFFS
  • Humana HMO
  • Humana Integrated Care Program of Illinois
  • Humana Medicare Choice PPO
  • Humana Medicare Gold Plus HMO
  • Humana National EPO
  • Humana National HMO
  • Humana National POS
  • Humana National POS - Open Access
  • Humana POS
  • Humana PPO
  • Illinois Health Connect
  • Imagine Health Smart Care
  • Medicare
  • MultiPlan PPO
  • SEIU – Local 4 HMO
  • SEIU – Local 4 PPO
  • Sunrise Advantage Plan
  • Tricare Prime
  • UFCW Local 1546 Health and Welfare Fund (UMC)
  • UHC / AARP Medicare Advantage Value HMO - POS
  • UHC / AARP Medicare Complete HMO
  • UHC / AARP Medicare Complete Plan 1 HMO
  • UHC / AARP Medicare Complete Plan 2 HMO
  • UHC / AARP Medicare Supplement
  • UHC / AARP MedicareComplete (Secure Horizons) HMO
  • UHC National Railway Carriers & United Transportation Union Health and Welfare
  • UHC Railroad Employees National Health & Welfare Plan
  • UHC/ AARP Medicare Advantage Choice PPO
  • UniCare PPO
  • Union Health Services, Inc.
  • Union Medical Care PPO
  • United Health One Golden Rule
  • United Healthcare Charter HMO
  • United Healthcare Choice Plus PPO
  • United Healthcare Core PPO
  • United Healthcare Group Medicare Advantage PPO
  • United Healthcare Indemnity
  • United Healthcare Medica
  • United Healthcare Medicare Complete Assure PPO
  • United Healthcare Navigate HMO
  • United Healthcare NexusACO OA
  • United Healthcare NexusACO R
  • United Healthcare Options PPO
  • United Healthcare Oxford
  • United Healthcare Select EPO
  • United Healthcare Select PPO

Ratings and reviews

Overall rating

based on 441 patient ratings.


July 28, 2020 6:15 PM

Dr Dagiantis is and has always been very courteous, professional and helpful in his suggestions and recommendations to stay healthy and safe.

July 28, 2020 6:15 PM

This physical went very well.

July 24, 2020 1:00 PM

All of your doctors & nurses are excellent - All of the nurses are especially SHARP with helping to set up procedures & appointments, etc.

July 9, 2020 7:31 AM

I always enjoy my visits with Dr. Dagiantis! He is a very good doctor!

July 8, 2020 10:31 AM

Dr. Dagiantis is the best!

July 2, 2020 12:00 AM

The doctor listen to me, and understands my health.

June 22, 2020 4:01 PM

All good!

June 22, 2020 1:38 PM

very pleasedresponsive to my concerns

June 22, 2020 10:06 AM

Has been family doctor for years; trustworthy and thorough.

June 22, 2020 10:06 AM

Would recommend Dr. Diagiantis to anyone.

May 28, 2020 12:38 PM

All good!

May 20, 2020 8:45 AM

Good experience. No problems.

April 29, 2020 8:46 AM

I needed to have my visit with Dr. Dagiantis by telephone because of the safe-distancing protocol. Dr. Dagiantis was on time with his call and we discussed everything I needed to have with him.

April 6, 2020 5:49 AM

I never feel rushed with Dr. Dagiantis. He always is respectful and answers my questions to my satisfaction.

March 23, 2020 2:29 PM


March 21, 2020 7:59 PM

My Doctor is easy to talk to and always listens to any concerns I may have. Always discusses any health concerns and things I need to do to improve my health or address any health issues.

March 21, 2020 7:59 PM

I always have a good experience and never feel rushed.

March 18, 2020 12:31 PM

He always listens to my problems and follow ups on them.

March 17, 2020 2:23 PM

Overall a good experience with this provider

March 13, 2020 8:54 AM

No comments - very happy with service.

March 13, 2020 12:00 AM

Dr. Dagiantis is a very good doctor. He is an asset to your clinic.

March 12, 2020 9:52 AM

Pleased with service and referrals.

March 9, 2020 10:14 AM


March 9, 2020 10:14 AM

I had a good experience.

February 21, 2020 11:53 AM

I am very pleased with Dr. Dagiantis and all the drs. that I have seened. A very happy patient.

February 13, 2020 12:01 PM

They were very good!

February 10, 2020 5:03 AM

Very satisfied with Dreyer Health Care.

February 10, 2020 5:03 AM

Very good.

February 2, 2020 9:13 AM

I have been seeing Dr. Dagiantis for years and he is knowledgeable, kind and on target for any ailment for which I come to see him. Hi follow-up is excellent and I always feel that he has reviewed my issues and medical history prior to my visit.

February 2, 2020 9:13 AM

Dreyer Medical Clinic and now Advocate has been my main provider for care since 1965. I have used all their in-house doctors for most of my medical needs.

January 28, 2020 2:04 PM

always a good wxperience

January 20, 2020 5:12 PM

Very good.

January 13, 2020 3:42 PM

Always a good visit with my Doctor he is very efficient

January 13, 2020 3:42 PM

like I said always a good experience withh my Doctor. He is a very Doctor.

December 28, 2019 8:08 AM

There was a good provider they take care with a friendly talk and answer any question we ask. Very good place.

December 28, 2019 8:08 AM

Very good experience.

December 19, 2019 10:49 AM


December 19, 2019 10:49 AM


December 14, 2019 1:27 AM

the visit was, through and went over detail. Doctor gave me a lot information

December 14, 2019 1:27 AM

the phone system is way too long, waiting sometimes 30 minutes

December 9, 2019 7:22 PM

Excellent. Everything perfect.

December 9, 2019 7:22 PM

always a good experience. My health is in good hands.

December 7, 2019 4:15 PM

I was getting ready to travel out of the country and required additional medication. the doc. knew this and had everything ready for me.

December 7, 2019 4:15 PM

Excellent experience.

December 2, 2019 11:30 PM

I have been a patient of this Dr. for more than 20 years. He is fully aware of my medical history.

December 2, 2019 11:30 PM

He is always a careful, attentive listener that provides excellent advice

November 14, 2019 11:00 PM

I have complete confidence in Dr. "Bill" Dagiantis.

November 10, 2019 11:00 PM

I was not able to set up the My Chart although using the directions given me at the office. I take it you haven't adjusted to your software. The Aurora office is not pleasant to go to, although the people are. It is like a manufacturing floor.

November 10, 2019 11:00 PM

The above comments are about the administration. I am pleased with the providers I have encountered.

November 4, 2019 6:00 PM

It was exceptionally good

November 2, 2019 7:00 PM

Dr D is the best

October 28, 2019 7:00 PM

Very good, he listened to me and answered all questions.

October 28, 2019 7:00 PM

Very good.

October 27, 2019 7:00 PM

I feel the physical I was given could have been a little more through

October 27, 2019 7:00 PM

Excellent doctor. You are fortunate to have him on staff. I have seen him for years. I recently moved 2 hours away but am driving because I respect him so much.

October 23, 2019 7:00 PM

Dr. Dagiantis is great!

September 28, 2019 7:00 PM

There was much to talk about, and he was patient with me. He is always thorough and doesn't rush you out of the office.

September 26, 2019 7:00 PM

I have respect for ... (Dagiantis) I trust his judgment.

September 24, 2019 7:00 PM

My Dr. Dagiantis is the greatest dr. there is so kind & caring.

September 22, 2019 7:00 PM

very good

September 12, 2019 7:00 PM

The only thing I've noticed is having to wait longer in the exam room, especially.

September 9, 2019 7:00 PM

He is always ready to listen.

September 8, 2019 7:00 PM

He listened to me! Very good! We discussed a few things about my health - and gave me some good ideas about what I need to do.

September 6, 2019 7:00 PM

This was a good visit. it was a yearly physical. we have been with Dr. Dagiantis for 20 years and he takes the time to listen.

August 28, 2019 7:00 PM

Contact with this provider has been personal, thorough and adequate

August 25, 2019 7:00 PM

He was very good. He listened to me and check me then suggested I see a specialist who could add extra help in my hemorrhoids problem.

August 21, 2019 7:00 PM

My provider listens to my concerns and make helpful comments.

August 19, 2019 7:00 PM

very please with dr. dagaintis!

August 16, 2019 7:00 PM

very comfortable and open conversation

August 11, 2019 7:00 PM

Great people to work with.....Doctors & staff........thank you...........

August 4, 2019 7:00 PM

Great. He checks everything. I like him as my family care doctor.

August 4, 2019 7:00 PM

Dr. Degiantis is and always have been very concerned about my health

August 2, 2019 7:00 PM

Dr. Dagiantis always takes the time to listen and shows that he cares about me and my health needs.

August 2, 2019 7:00 PM

thank you for being a caring provider. which is a rarity these days.

August 2, 2019 7:00 PM

thank you doctor for your health services and being a good listener and answer my health care questions.

July 22, 2019 7:00 PM

always good and informative

July 18, 2019 7:00 PM

For 21 years I have been a patient for this provider and I am pleased to have him as my primary care dr.

July 15, 2019 7:00 PM

Always a great experience with Dr Degaintis.

July 14, 2019 7:00 PM

Dr. Dagiantis took plenty of time to listen to my concerns. He came up with plans to check out the issues and acted on them very promptly. I had a phone call from one referral by the time I returned home that very day. That is quick! Other referrals came through within a day or two more.

June 26, 2019 7:00 PM

I have been a patient of Dr. Dagiantis for over 15 years. I have every confidence in his care.

June 20, 2019 7:00 PM

She was very good. Attentive, made sure we understood what was being done & answering questions. Very patient.

June 19, 2019 7:00 PM

It was excellent! My visits with this provider are always excellent!

June 4, 2019 7:00 PM

happy he arranged to have ear wax cleaned out

June 3, 2019 7:00 PM

Dr. Dagiantis is an outstanding physician, with great communication skills and a broad knowledge of medical issues.

June 2, 2019 7:00 PM

Very positive.

May 29, 2019 7:00 PM


May 20, 2019 7:00 PM

wonderful, caring doctor

May 19, 2019 7:00 PM

Always a great experience!! Over 20+ years.

May 14, 2019 7:00 PM


May 12, 2019 7:00 PM

Dr. Digiantis is a kind and through physician who is guieinely concerned about my physical and mental well-being.

May 2, 2019 7:00 PM

Dr. Dagiantis is an excellent doctor. He takes the time needed to explain things to ensure my understanding. He is patient, kind, and very knowledgeable, Dr. Dagiantis is also very thorough and always follows up when needed.

April 14, 2019 7:00 PM

Dr. Dagiantis knows I travel out of country, so always reviewing where and if any shots or immunizations required for me shows an interest in my wellbeing.

April 14, 2019 7:00 PM

My doctor talks to me and listens to my responses. He is the best!

April 14, 2019 7:00 PM

I think Dr. Dagiantis is a really good dr. and he helps me a lot too!

April 8, 2019 7:00 PM

very good

March 24, 2019 7:00 PM

Everything was excellent!

February 24, 2019 6:00 PM


February 12, 2019 6:00 PM

Excellent care, as always.

February 3, 2019 6:00 PM

I like the doctor he is very polite listens carefully to his patients very knowledgeable greets his patients with a smile I would recommend him to all my friends and family

January 31, 2019 6:00 PM

Dr. Dagiantis is an extraordinary physician who listens and cares. I am impressed that he is always prepared for our (my husband is a patient as well) visit.

My health enews articles

More for your health

LiveWell app & website

Manage health and wellness for yourself and for everyone who counts on you – all in one place. Learn how it works

Safe Care Promise

Your health and safety is our highest priority at every step of the journey with us. See what to expect

Virtual visits

Seeing a provider from home is easier than ever. Get virtual care 24/7 or schedule a visit with your provider. Get started


Learn more about this provider and request an appointment online. Prior to requesting an appointment with any provider you select, confirm with your insurance carrier that this doctor is in your insurance network.

Information listed under the "clinical interests" columns was supplied by the physicians. It is provided to you for informational purposes only, and neither Advocate Health Care nor the Advocate facility has independently verified the information. If you wish to confirm the information contained herein, or if you have any other questions about a particular physician, please contact the physician’s office.

Unless otherwise stated, physicians are independent practitioners who are not employees or agents of Advocate Health Care or the Advocate facility where the care is being provided. Neither Advocate Health Care nor the Advocate facility shall be liable for the medical care provided or decisions made by these independent physicians.

Is this your profile? Submit edits/updates.