Patricia K Merlo, DO

Specialty: Internal Medicine

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Advocate Medical Group

1710 North Randall Road

Suite 200

Elgin, IL 60123

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Office: 847-214-5755

Fax: 847-214-9606

Meet Patricia K Merlo, DO



  • Michael Reese Hospital
  • Michael Reese Hospital
  • Philadelphia College Of Osteopathic Medicine

Board certifications

  • Internal Medicine

Hospital affiliations

  • Advocate Sherman Hospital

Insurance accepted

  • AAH Preferred – Team Member Plan
  • AAH Select – Team Member Plan
  • AARP Medicare Advantage Access HMO
  • Aetna Better Health Premier Plan MMAI
  • Aetna Coventry (Aetna Medicare) HMO
  • Aetna EPO
  • Aetna HMO
  • Aetna Managed Choice (MC) POS
  • Aetna Medicare HMO
  • Aetna Medicare POS
  • Aetna Medicare PPO
  • Aetna Medicare Value Plan PPO
  • Aetna NAP - PPO
  • Aetna Open Choice PPO
  • Aetna POS
  • Aetna Premier Care Network
  • Aetna Select
  • Aetna Signature Administrators PPO
  • 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 Cross Community FHP
  • Blue Cross Community ICP
  • 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 Health Partners POS
  • Cigna Healthspring True Choice PPO
  • Cigna HMO
  • Cigna NALC Health Benefits Plan
  • Cigna Open Access Plus
  • Cigna Open Access POS
  • Cigna POS
  • Cigna PPO
  • Cigna-HealthSpring Medicare Advantage HMO
  • Cofinity PPO
  • Coventry / FirstHealth
  • Coventry Health Care HMO
  • Coventry Health Care Open Access POS
  • Coventry Health Care POS
  • Coventry Health Care PPO
  • First Health Network PPO
  • FirstHealth / Coventry Personal Care
  • Galaxy Health Network PPO
  • Great West Healthcare - Cigna EPO
  • Great West Healthcare - Cigna PPO
  • HealthLink PPO
  • HealthSmart Preferred PPO
  • HST Care Connect EPO
  • HST Care Connect PPO
  • Humana Choice POS
  • Humana Community Select HMO
  • Humana HMO
  • Humana Illinois CCN HMO
  • Humana Medicare Advantage HMO
  • Humana Medicare Choice PPO
  • Humana Medicare Gold Plus HMO
  • Humana Medicare Supplement Plan
  • Humana MMAI
  • Humana National HMO
  • Humana National POS
  • Humana National POS - Open Access
  • Humana POS
  • Humana PPO
  • Medicare
  • Meridian
  • Meridian MMAI
  • MultiPlan PPO
  • SEIU – Local 4 HMO
  • SEIU – Local 4 PPO
  • 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 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 Choice 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
  • Wellcare Health Plans HMO

Ratings and reviews

Overall rating

based on 685 patient ratings.


July 27, 2020 7:42 PM

like the doctorbut staff not wise in handling new covid protocol

July 27, 2020 2:31 PM

my experience was terrible. degrading, humiliating, shameful, and a waste of time and money. I had to find another doctor ASAP, which I have found one not affiliated with Advocate at all! I was prescribed depression medicine, and was listened to and cared for. my blood pressure from this experience was also very high. I've never cried leaving a doctors office before. I'm just glad I never have to go back!! Thanks for hearing me out. much appreciated.

July 21, 2020 7:52 AM

While the staff have been kind and easy to talk to when I'm there. However trying to get in for an appt. has not been easy. The office is usually booked 2 months out.

July 21, 2020 7:52 AM

I asked Dr. Merlo to check vit. D level even though I walk outside every day. The blood test came back that I was low so I'm now taking vit. D vitamins. Anyways, I felt like we had a lot accomplished during the visit. Dr. Merlo is always friendly, professional and is very attentive!

July 20, 2020 9:48 PM

My provider always has time to listen to my questions and provide answers. She spends as much time as I need to assure that I am comfortable with my health and where it is at. I am very comfortable with her and appreciate her honesty.

July 20, 2020 4:51 PM

Dr. Merlo has always been interested in my health and asked the appropriate questions. My only complaint this past yearly checkup at the end of June was that I called for results of my blood work and xray and no one ever got back to me with this information.

July 18, 2020 4:15 PM


July 18, 2020 10:28 AM

Wait time was too long. Almost an hour.

July 16, 2020 11:38 AM

Very honest - NOT forceful & very caring. Only one problem - I returned a call to this office - and no one got back to me - had to call again. Not GOOD!

July 16, 2020 11:38 AM

Blood work is done before visit & she goes over ALL tests & results of each. This is so much better than waiting for a phone call. Very detailed dr.

July 16, 2020 11:04 AM

Everyone from the receptionist to Dr. Merlo treated me very well.

July 13, 2020 5:21 PM

I was very happy with this visit, felt we thoroughly discussed my situation and worked out a solution as a team.

July 11, 2020 10:35 AM

I see Dr. Merlo every year for an annual physical. I am in excellent health so I do not need to see her more frequently. She runs labs every year so that we know that my levels are in the normal range. I am not on any prescription medications and am happy with seeing her annually.

July 11, 2020 10:11 AM

Assured me I was doing very well - with only age related issues. But when I read the summary there was a note that said I had chronic kidney disease, stage 2 (mild). It knocked my socks off and had to call office with a somewhat casual explanation (not to worry - age related)???

July 11, 2020 10:11 AM

When I described possible bladder urgency she handed me a card for a urologist! Don't doctors advise some knowledgeable treatments before sending to a specialist right off the bat? My old retired doctor would have suggested remedies before sending me off with a card!

July 9, 2020 5:50 PM

the experience ok, no one called me before my visit to schedule a blood draw. they didn't tell me I needed a blood draw when I scheduled as well. Dr. Merlo is usually very good, but I struggle with my weight and she basically told me to find a bariatric surgeon and get surgery and then really didn't want to discuss it any more

July 9, 2020 5:50 PM

normally Dr.Merlo is great, I felt a little rushed and almost dismissed by her. this was not normal for her. maybe her workload is too excessive. I didn't feel this was the same level of service i normally get from her

July 1, 2020 10:51 PM

Dr. Merlo is very caring, explains things i understandably snd thoroughly. I am very confident in her care.

July 1, 2020 10:51 PM

always a good experience.

June 29, 2020 8:43 PM

She is the best!

June 29, 2020 8:43 PM

Very thorough, listens & then responds to the questions,

June 25, 2020 11:48 AM

Front office staff was rude. I always have this issue. They need to slow down and use please/thank you.

June 25, 2020 11:48 AM

I like Dr. Merlot - staff needs work!

June 15, 2020 10:33 PM

Questions were answered clearly and an appointment was set for a future physical.

June 8, 2020 1:14 PM

Dr. Merlo is a very thorough, knowledgeable, and great person. I feel very comfortable with her.

May 29, 2020 10:24 AM

Dr. Merlo is great!

May 22, 2020 12:00 AM

Dr. Merlo has been by dr. for a long while. She has always taken good care of me.

May 20, 2020 8:27 AM

My visit w/Dr. P. Merlo was a phone evaluation because of the coronavirus. Therefore, questions 13, 19, 34 & 35 were not applicable. Dr. Merlo was very accurate in determining what my problem was & in the remedy.

May 18, 2020 1:43 PM

Dr. Merlo has been my "Doctor" (not my little-p "provider") for around 30 years now. She's a fine physician and a fantastic human being.

May 18, 2020 1:33 PM

Dr. Merlo and staff were very patient with me since this was a Zoom visit and it was the first time I've used this software.

May 18, 2020 1:33 PM

It's always a pleasure to see Dr. Merlo.

May 16, 2020 10:26 AM

left office with no answer to why I was feeling bad

May 11, 2020 2:52 PM

Dr. Merlo knows my physical history as she has been seeing me for many years. She always asks about my meds but the ones prescribed by her are working well. I COMPLETLY trust Dr. Merlo in taking care of me!!!

May 8, 2020 12:00 AM

This was my first visit with Dr. Merlo, and I was very pleased with how friendly she is. I was very relaxed as we spoke of future procedures for my health care.

May 8, 2020 12:00 AM

Very, very good first experience & impression!

May 2, 2020 8:54 PM

Dr Merlo always listens and gives me the opportunity to speak to her about my needs and wants. I'm glad that we have a good dr patient bond, I trust her completely

May 2, 2020 8:54 PM

I'm glad that Dr merlo is always willing to help me with trying to lose weight and deal with all of my medical needs

April 29, 2020 2:41 PM

Dr. Merlo had read my letter re: several health concerns and had recommendations ready including a reminder of the specialist who had performed my colonoscopy two years ago.

April 29, 2020 8:46 AM

Dr. Merlo is my PCP. I am satisfy and happy with my relationship with her.

April 28, 2020 8:21 AM

great De Merlo and her staff are so professional and takes great pride in providing the best service that they can for you

April 28, 2020 8:21 AM

always have had great experience with Dr Merlo and her staff they are great at what they do

April 16, 2020 8:30 AM

Dr. Merlo is our long time GP and has served us very well.

April 16, 2020 8:30 AM

Dr. Merlo is always gracious and understanding a very good GP.

April 13, 2020 3:20 PM

I've been going to Dr. Merlo for >15 yrs. I love her & her office!!

April 11, 2020 11:41 AM

always a good experience

March 31, 2020 6:30 AM

Always a pleasant experience with Dr. Merlo & her staff.

March 23, 2020 11:49 AM


March 23, 2020 11:48 AM

I am, and have always been impressed with Dr. Patricia Merlo and her staff. I am in excellent care with her.

March 23, 2020 11:48 AM

I have never had a bad experience in her office. Excellent physician & staff!

March 21, 2020 12:28 PM

Always explains everything so that I can understand the reasoning behind treatment.

March 3, 2020 8:52 AM

Very congenial and easy to talk to.

March 3, 2020 8:09 AM

Excellent service.

February 29, 2020 5:57 AM

Waited in exam room over 35 minutes. Felt like I was forgotten.

February 29, 2020 5:57 AM

Usually not that long of a wait once back in exam room. Staff and provider always courteous.

February 27, 2020 6:53 AM

Dr. Merlo saw me for a respiratory infection. She explained to me that although I had been ill for a while, I seemed to be getting better. Also, I did not have the flu. She is a very kind and patient doctor.

February 27, 2020 6:53 AM

It took me so very long to find a terrific PCP, and the fact that she has a wonderful staff makes my visits very positive and reassuring. When I move out of state, they are the ONLY people I will miss -- and that includes my relatives.

February 25, 2020 11:40 AM

Positive, friendly, informative.

February 25, 2020 11:40 AM

Good experience.

February 23, 2020 3:02 AM

dr. Merlo is very attentive and has helped me tremendously with my weight loss and all-around health

February 23, 2020 3:02 AM

she pays attention to detail answers all questions in a way that I understand listens to what I have to say always checks in on me to make sure that I'm feeling good both physically and mentally her staff at the front desk is always smiling polite very friendly greeting when you walk in and they always stop what they're doing and says goodbye when you're leaving I never have to wait long it's always a good experience

February 21, 2020 10:32 AM

Dr. Merlo is a very good listener.

February 21, 2020 10:32 AM

Dr. Merlo is a "10."

February 19, 2020 11:10 AM

My visit went very well, I was given orders for a bone dens. x ray a mammogram and blood work. I will follow up with these tests and look forward to hearing from Dr. Merlo's office with the results.

February 18, 2020 9:05 AM

very good but rushed

February 17, 2020 7:17 PM

she's the best!!!

February 15, 2020 4:16 PM

typical Merlo visit. very satisfactory

February 15, 2020 8:46 AM

I have always had a great experience with Dr. Merlo. She explains things that are understandable...and she definitely takes time to listen..

February 15, 2020 6:07 AM

Dr. Merlo goes above & beyond. She knows my health issues - I feel I can speak open & honestly - She knows her stuff!

February 11, 2020 12:30 PM

Dr. Merlo and her staff were very kind and caring and explained what they needed to do.

February 11, 2020 12:30 PM

Dr. Merlo and her staff are great. I've been going to her for years.

February 11, 2020 7:51 AM

Dr. Merlo is a very kind, caring, respectful, thorough and knowledgeable. I will continue to see her as long as I can.

February 10, 2020 8:09 PM

Dr. Merlo is always kind and listens to my concerns

February 10, 2020 3:55 PM

Wonderful Doctor, best I ever had!

February 10, 2020 2:28 PM

Thorough! Included an EKG test along with a PAP. Recommended mammogram and bone density test.

February 10, 2020 2:26 PM


February 10, 2020 1:58 PM

was a good visit

February 10, 2020 1:46 PM

I was a little disappointed that the wait times have grown exponentially with this provider - especially since Dr. Merlo is a fantastic doctor. I do understand that she takes her time with her patients and that is extremely respectable, but when my appointment is at 10:15 and I'm not pulled into the back office until 11:00, that can be extremely frustrating as a patient. It was also very hard waiting for my test results. They were rushed since I was in pain, but did not hear a reponse until I called 2 days later, and after I finally got an answer, they followed up themselves the next day with the treatment plan. Luckily, what was wrong with me was relatively minor even though I was in pain and discomfort, but had it been something that should have been treated more urgently, I'm not sure if I would have gotten the news any quicker.

February 10, 2020 1:46 PM

I very much love Dr. Patricia Merlo, she's a fantastic practician. However, how the office is run is less than ideal.

February 8, 2020 6:46 AM

New dr. for me - original dr. retired. She was very informative during complete exam. I like her a lot!

February 8, 2020 6:46 AM

Bad experience was a "very" long wait in examining office or room (1 hr.) - waiting rm. was short.

February 4, 2020 1:56 PM

Provider is excellent.

February 4, 2020 10:55 AM

Very good experience

January 29, 2020 2:11 PM

Initial visit with Dr. Merlo after moving to Egin, IL from Michigan. My first visit went very well.

January 29, 2020 2:11 PM

The Dr. Merlo and her staff were very friendly and knowledgeable. I am happy they are a part of my health care team.

January 29, 2020 10:08 AM

Dr, Merlo is the best Dr. I have ever had.

January 28, 2020 10:04 AM

Thank you, for being awesome, Dr. Merlo!

January 28, 2020 10:04 AM

Great experience, per usual. Thanks again!

January 27, 2020 2:44 PM

My doctor is very thorough.

January 27, 2020 2:37 PM

Excellent through doctor.

January 27, 2020 2:37 PM

Very knowledgeable and excellent communication skills

January 24, 2020 6:00 AM

She needed notes from specialist that she had not gotten. Was going to call him. Never heard anything again.

January 24, 2020 6:00 AM

The office never calls with test results. I have to call a couple times to get or the portal gets them first.

January 16, 2020 1:37 PM

Confident & comfortable, leaving at ease.

January 10, 2020 3:49 PM

My provider is always professional, helpful and willing to take the time to discuss any concerns I have. She knows of my past medical issues and ensures we discuss anything I might need. I am fortunate to have found such a thorough, dedicated provider.

January 10, 2020 3:49 PM

Her staff is equally as thoughtful, patient and kind. They are advocates for me and ensure I am taken care of promptly when needed.

January 6, 2020 9:32 PM

I was feeling sick and they were able to see me immediately. The medicine that Dr. Merlo prescribed has helped me tremendously. I think it is important to be able to see your doctor when not feeling good. Other physicians have not been as caring.

December 28, 2019 5:26 PM

I have gone to this doctor for over 15 years and she is very good. She is always easy to talk to and takes time to answer questions and it explains things very good.

December 28, 2019 5:26 PM

I can say it's always been good.

December 28, 2019 3:13 PM

good visit , all data from blood tests reviewed , questions answered .

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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.

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