My colonoscopy involved Lake Anesthesia Associations through a decision of my doctor. I spent a day trying to get estimates and billing codes for my upcoming procedure. Despite calling several times over the course of day ( 12/22/25 ) I could not receive meaningful answers. I thought providers were not allowed to give patients the run around because of the Federal No Suprises Act of 2022, but apparently this law does not currently cover patients with insurance paying in network. For a procedure performed 1/13/2026, Lake Anesthesia did not submit to my insurance until 3/4/2026. While this is standard practice, I logged into my insurance profile for many days waiting for my bill. I received two copies of my Anesethia bill - both of which contain arcane billing lingo and none of which mention the ICD10 codes used by insurer. After insurance I was left with $446.00 in charges. Because the procedure was in-network and covered by insurance they apparently are not obligated to provide any type of meaningful estimate. The colonsocopy practice claimed the out of pocket charge would have been $300 and included an estimate. So you are actually worse off using insurance. I found ChatGPT to be very helpful in framing communication and helping me understand options. I wish I had done more of my upfront communication in writing, so I had more legal recourse and understanding of my options. The billing practices are unethical at best and illegal at worst. Most of my neighbors don't bother paying these bills. Please give some consideration to not paying or using ChatGPT to draft responses that will keep bills in legal limbo for years. I wish more resources existed to protect consumers from these types of predatory health care companies. Along with alerting Federal and State regulators, another option is disputing your claim in small claims court. Even though you may lose your case, the legal costs will give companies such as Lake Anesthesia incentive to improve their ability to interact with consumers with reliable estimates and readable bills. read more

This provider is dangerous and could be life altering. The signature on the record appears to be the initials "JA". An Advanced Practice Nurse who provides anesthesia for GI procedures "in-office" should perform "an uninterrupted medical history" that includes: A thorough pre-anesthesia evaluation should cover the following specific components: 1. Comprehensive Medical & Anesthesia History * Past Medical History: Focuses on cardiac, pulmonary, and endocrine diseases, as these carry the highest perioperative risks. * Anesthetic History: Past complications, adverse reactions (e.g., malignant hyperthermia), and history of difficult intubations or nausea. * Medication & Allergies: Current prescriptions, over-the-counter drugs, supplements, and known allergies or adverse drug reactions. * NPO Status: Confirmation of fasting times to prevent aspiration. [1, 2, 3, 4, 5] My husband had a rapid fire, cursory medical history while the nurse was also interrupting and asking questions. This is flat out unprofessional and bad practice. This is not opinion, it is legal president for sound medical care in a non-urgent setting. Yet, neither the nurse or the advanced practice nurse listened to the medical history, "yea I read it, You have the usual high blood pressure... I am his wife and a nurse. I interrupted and said AND Glaucoma. The response was, "I saw that too". He was given among other medications: Intravenous "Glyco" glycopyrrolate. This is a problem- The 2025 FDA Package Insert for this medication states: Warnings and precautions: Precipitation of acute glaucoma- may cause mydriasis and increase intraocular pressure in pt. with glaucoma. Advise the patient to promptly seek medical care if they experience symptoms of acute angle closure. CONTRAINDICATIONS ....Glycopyrrolate Injection may be contraindicated in patients with the following concurrent conditions: glaucoma.... WARNINGS This drug should be used with great caution--- if at all--- in patients with glaucoma. Glycopyrrolate Injection may produce drowsiness or blurred vision. The patient should be cautioned regarding activities requiring mental alertness such as operating a motor vehicle or other machinery or performing hazardous work while taking this drug. He was discharged without paper instructions. "It will be on the portal later". So, in this gap of time, a patient departs a caregiver uninformed for what to seek urgent medical care for and should he need urgent medical care...ZERO data would be available to those who need to treat him. In the written discharge directions, on the portal, he was not advised of the warning or to seek medical advice for any signs or symptoms of narrow angle glaucoma. I called his Neuro Ophthalmologist and left a message due to my concern to my husband saying, "I don't want that medication ever again"! I can't see. He usually says nothing. It wasn't until the following day, 24-hours later that I knew. I am calling the State of Illinois to inform them. We will never receive use this vendor of "?" I am not sure what to call it but competent is not a word I would use. read more

The absolute worst. Dont know her name, had a procedure in April & had the worst anesthesiologist from this company who was rude to me, rough with me, poor bedside manny, and bruised me several times. After calling this place and speaking with upper staff all I got was " Sorry". Do not trust or let them touch you. read more

Lake Anesthesia - Pain in my wrist for over a week. - Anesthesiologists Near Me - Flossmoor, Illinois

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Two times Lake Anesthisa put my life and health in jeopardy. The first time I told the anesthesiologist I needed 50 of Benadryl with Zofran as I have a documented allergy. She said no and did what she wanted. I had a SEVERE allergic reaction and asspirated and choked during the procedure. They couldn't complete my egg retrieval because of lake anesthesia's NEGLIGENCE. We lost that round that cost us thousands because they decided to do whatever they wanted. I communicated what I needed. I also have medical ptsd. Ellen Wagner their CEO came to do my next retrieval because of their incompetence and negligence. She made a plan that we would stick to. I had another retrieval today and Andrew refused to stick to the plan. I am it sure I got the correct dose of Benadryl and he gave me medicine I was not supposed to have. He chose NOT to follow the protocol we were promised would be in place every time I would be under. I woke up in pain and I woke up having a massive panic attack. Andrew did what he wanted and my mental and emotional health suffered because of it. I personally called Ellen Wagner when it happened and she said Andrew gets to make the calls. I told her she promised we would stick to the plan she created for me and she didn't care at all. This is horrific. Do not trust them. I am sorry I ever did. This company has played with my health and safety too many times. BEWARE read more

Don't use or let your physician use this provider. They don't bill properly, refuse to work with anyone on resolution (we did multiple three way calls with them and insurance to get billing codes correct and bills sent to correct space) - no movement on any efforts made by use or our insurance provider. When you call 708.798.5838 the lady we have been attempting to work with is extremely rude and not cooperative. Regardless of their service capabilities on the medical end, the pain you'll endure afterwards trying to sort out billing isn't worth the service read more

I have the smallest veins in America so getting IVs can be a painful fishing expedition. Lake Anesthesia made this process so easy, warming me up with a heat pack and warm blankets. She explained everything as it was happening and I almost didn't feel anything at all. 10/10 experience read more

I have used Lake Anesthesia several times for a few medical procedures and am happy with their services. Recently, been having a lot of issues with my insurance denying claims and charging an obscene amount of money and I called Lake Anesthesia to resolve and pay my claims. They were happy to offer me a discount for my troubles -- super appreciated!! Thank you to their front desk and excellent customer service. read more

I received care from Lake Anesthesia a few times and I could not be more pleased with their attention to detail and exceptional care! I would go with them for my anesthesia needs, everytime my anesthetic has been superb. Highly recommend. read more

I received great care from Lake Anesthesia Associates. I felt very safe during the procedure and appreciated how my anesthesiologist took extra time to thoughtfully answer my questions and alleviate my concerns. read more

I also have what sounds like the same issues others here have had with this provider. Per Illinois law, it does not allow members to be billed for more than the applicable in-network copayment, coinsurance, and/or deductible for services performed under 215 ILCS 5/356z.3a. Despite paying my balance in which I'm responsible for, they continue to bill me for an amount my insurance company says I'm not responsible for. What a headache! I will be reporting this institution to the state for review. read more

Read carefully the other reviews regarding out of network billing, they are so true. You will not be told that this company is out of network prior to your procedure and they will not work with you at all. Let your physician know not to use this provider read more

I came across Lake Anesthesia during my anesthesia school rotation and I could not be more impressed with this group. Safe and personalized care was at the forefront of their practice. I have rotated through many sites and can say that Lake Anesthesia stood out by their anesthesia care and how they treated their patients. They go above and beyond to make sure that the anesthesia and the total experience is exceptional. I would highly recommend Lake Anesthesia and would request their services for myself if ever needed. read more

Ellen Wagner was my anesthesiologist for a procedure and she was delightful. Immediately made me feel at ease and felt completed fine after waking up (rather rested, in fact). She was pleasant, funny, and is clearly in the right field. Thank you, Ellen! read more

This is the worst company to deal with. They are rude and sarcastic when you call more than one time. They won't work with you and the insurance company to appeal a decision. Be careful. They also send you to collections without any notice. read more

Hands down the best office-based Anesthesia company around. The anesthesiologist was comforting; I felt I was in great care. I had no side effects and little downtime. I received quality care! read more

From the front office staff to the medical care providers, hands down one of the best anesthesia teams! The billing staff was informative and the the anesthesiologist was caring and eased my worries. read more

sent a $70 bill that I had no idea about to collections right before Christmas, only found out about it because my credit score notified me that it went down by 17 points, right before Christmas, Merry Christmas to me! read more

I was so nervous and and afraid because I needed an unexpected surgical procedure. My anesthetist was excellent and made me feel safe and comfortable. I woke up as if I never went to sleep and felt great, no pain and no vomiting. can highly recommend!! read more

Lake anesthesia is Dr. Horowitz's anesthesiologist for his in office colonoscopy. Trouble is, they are not in the majority of healthcare networks. Ours is United Healthcare. They tell you to check with your insurance before the procedure but your insurance will tell you it is the providers job to preauthorize for the procedure. This is because that want procedure codes and diagnostic codes. If you ask lake if they are in network before the procedure the response was, "No but we appeal for you and we will get paid." Not so easy. Procedure was in 2017 and we are still going back and forth. The insurance company paid the 110% of medicare allowed expense since they had no contact with them, leaving us with a bill of over $700. Lake insists we owe that. We were at a preferred provider with 100% coverage for preventative services. Funny thing is 2 other family members have the same issue. read more

This is the worst anesthesia group ever! The staff is rude and they will send your bill to collections without any warning and hang up on you. If your doctor uses them beware! I would give them negative stars if possible! read more