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Dempster Therapeutic Services

5.034 reviews
Last reviewed: Jan 25, 2026

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Dempster Therapeutic Services is an online company. Based on 34 reviews on TrustPlane, it has an average rating of 5.0 out of 5 stars. Last reviewed January 25, 2026.

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We brought our daughter to Dempster

We brought our daughter to Dempster Therapeutic Services when she was 3.5 years old. We had initially hoped she would start speaking once she began daycare, but when that didn't happen, we knew we needed professional support. One of the most impressive things was the speed of care—we only waited 9 days for our first appointment, which included a full evaluation and diagnosis.After just four months of working with Mr. Andrzej Lewandowski, the transformation has been incredible. As a bilingual speech therapist, he has a specialized gift for connecting with children. Our daughter has gone from not speaking to using words and even full phrases to express her needs!We are still continuing our sessions with Mr. Lewandowski, and it is amazing to see her gaining new skills every single time she has speech therapy. On a practical note, the clinic accepts HSA, which has been a huge help for our family. If you are looking for effective, compassionate, and efficient speech therapy, I cannot recommend Mr. Lewandowski and the Dempster team enough.

Dominika A.
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Exceptional Bilingual Speech Language Therapist in the Chicagoland Area

Mr. Lewandowski is an excellent and well-respected bilingual English Polish speaking speech therapist. He is extremely attentive during therapy sessions with clients and he tailors all activities to meet his clients needs and interests. Additionally, he is able to identify any speech delays and areas of concern early on during initial evaluations, where he focuses on using client’s strengths to build up their weaknesses and to increase their engagement during sessions. Mr. Lewandowski’s work helps his clients build communication skills and a strong language foundation to support their successes in school settings and in their future. I continuously am impressed with Mr. Lewandowski’s unique and personalized strategies he utilizes during therapy, and I am very appreciative of the opportunities he has given me to be a part of the therapy process. Additionally, I have seen the positive and rapid progress in clients as a result of the effectiveness of Mr. Lewandowski’s work. I am also thoroughly impressed by Mr. Lewandowski’s ability to provide accurate referrals to additional specialists and by how quickly he is ready to provide necessary evaluations and treatment for his clients.

Anna C
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A really knowledgeable speech therapist

A really knowledgeable English-Polish speaking speech therapist. Mr. Andrzej Lewandowski is an excellent speech therapist for kids. And he is bilingual, which is great, because our kids speak both English and Polish at home.

Natalia W.
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Amazing private practice alternative for those frustrated with Early Intervention

I cannot express enough how grateful I am for the incredible experience we've had with Dempster Therapeutic Services, particularly with the outstanding therapist, Andrzej Lewandowski. As a parent of a 19-month-old child, navigating the world of early intervention services was initially overwhelming until we found Dempster Therapeutic Services.Unlike our frustrating experience with Early Intervention, Dempster Therapeutic Services has been a breath of fresh air. One of the standout features for me was the prompt and attentive response to all our calls. In stark contrast to Early Intervention, where my messages seemed to disappear into a void, Dempster Therapeutic Services made it a priority to either answer our calls or promptly return them on the same day. This level of responsiveness immediately set them apart.Scheduling our first appointment was a breeze, and I appreciated the user-friendly online process that eliminated unnecessary paperwork and the hassle of obtaining doctor's referrals. It was a seamless experience that allowed us to focus on what truly matters – our child's well-being.The speed at which Dempster Therapeutic Services acted was truly remarkable. After feeling discouraged by the lack of response from Early Intervention, our child was screened within 20 days of reaching out to Dempster Therapeutic Services. Within three weeks of the screening, therapy sessions were underway. The efficiency and commitment to providing timely support were beyond our expectations.Now, after just two months of therapy with Andrzej Lewandowski, we have witnessed incredible progress in our son's speech development. His communication skills have noticeably improved, and we attribute this positive change to the expertise and dedication of the Dempster Therapeutic Services team.I cannot recommend Dempster Therapeutic Services and Andrzej Lewandowski highly enough. Their commitment to prompt communication, streamlined processes, and, most importantly, the well-being of our child has made a world of difference for our family. If you're looking for exceptional therapeutic services, Dempster Therapeutic Services is the way to go – they have truly been a game-changer for us.

Agnieszka K.
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Amazing results for Early Intervention…

Amazing results for Early Intervention speech therapy. My 2 year old is now talking! I could not be happier. Also, the therapists there are bilingual English Polish speaking, which is great for a bilingual family like ours. Best speech therapist in Chicago area, hands down.

Hanna L Brynn
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The best servise ever.

The best service ever. Very professional.

Katarzyna
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Awesome experience

Awesome experience with Andrzej Lewandowski. He is very professional, knows exactly what he is doing, he knew how to talk to our son and gave us an incredible, detailed summary after the evaluation of our son's speech and the most important, the solutions and recommendations. We left the office knowing exactly of what to do next and scheduled important appointments.

Magdalena
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A Lifesaver for Our Child: Andrzej Lewandowski's Remarkable Speech Therapy Services

I can't express enough gratitude for the incredible work that Andrzej Lewandowski, the bilingual Polish-English speaking speech-language pathologist, has done for our 4-year-old child. As a parent, I wanted to share our heartfelt experience with his therapy services.Andrzej Lewandowski of Dempster Therapeutic Services is nothing short of exceptional. His reputation as a dedicated professional speaks for itself, and we consider ourselves fortunate to have found him. Andrzej's commitment to his craft is evident.From the moment we met Andrzej, it was clear that he possesses a unique blend of knowledge, patience, and compassion. His ability to connect with our child on a personal level was astounding. Our child, who previously struggled with speech and communication issues, immediately felt comfortable and eager to participate in therapy sessions.Andrzej's approach to therapy is nothing short of holistic. He not only focuses on speech and language development but also considers the emotional and psychological well-being of his young patients. This comprehensive approach helped our child overcome the challenges they faced and build confidence in their communication abilities.What sets Andrzej apart is not only his extensive knowledge and skill but also his genuine care for the children he works with. He goes above and beyond to tailor his therapy sessions to meet each child's unique needs. We witnessed his unwavering patience and encouragement, which played a pivotal role in our child's progress. We wholeheartedly recommend his services to any parent seeking exceptional speech therapy. He is not just a speech-language pathologist; he is a caring, compassionate, and incredibly talented professional who has made a profound difference in our child's life. Thank you, Andrzej, for your outstanding work and for helping our child find their voice.

Krystyna
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Best Polish Speech Therapist in Chicago.

Best Polish Speech Therapist in Chicago.

Monika K.
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After our first visit

After our first visit, I can say that I am glad that my son is in the hands of Mr. Lewandowski, who is very professional, to the point and very nice. You can see his passion and commitment right away.

Joanna
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Recommended for bilingual speech therapy

Recommended for bilingual speech therapy (Polish English speaking). Mr. Andrzej Lewandowski and Agnieszka Wojtowicz at Dempster Therapeutic Services are very professional, kind, and effective. Our 5-year old child started making progress after 7 speech therapy sessions.

Joanna Zab
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I highly recommend Dempster Therapeutic…

I highly recommend Dempster Therapeutic Service. Mr. Andrzej Lewandowski is very professional and knowledgeable therapist. I was really hesitated to start my speech therapy, because I am mature woman. I got my speech therapy with Agnieszka. Also very knowledgeable, professional therapist. I improved my speech very quickly. They very dedicated to the patient , giving a lots of attention and support. If you’re looking for speech therapist, that’s the one.

Rita
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Andrzej Lewandowski the Polish speaking Speech Therapist

Andrzej Lewandowski the Polish speaking speech pathologist is the best speech therapy provider for preschoolers, especially those who speak more than one language.

Małgorzata
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Early Intervention Speech Therapy

Mr. Andrzej Lewandowski the Polish-speaking speech therapist of Dempster Therapeutic Services in Chicago suburbs is a very experienced therapist and great with children. I can wholeheartedly recommend his services to any parent who is concerned about their child's speech or language.

Hanna R.
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Highly recommended speech therapist

Mr. Andrzej Lewandowski is a very professional and knowledgeable Polish and English speaking speech therapist. I highly recommend his speech therapy services.

Marta M
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Bilingual Polish Speaking Speech Therapist Chicago

I highly recommend Dempster Therapeutic Services located in Des Plaines near Chicago, especially Andrzej Lewandowski, a bilingual Polish speaking speech therapist. He is knowledgeable, professional, and very effective.

Beata K.
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Highly Experienced SLP

Andrzej Lewandowski is an excellent bilingual (Polish-speaking) speech therapist. He is highly experienced in accurately diagnosing speech and language disorders and developing individualized treatment plans. Andrzej has a unique approach to working with his clients, which keeps them engaged in sessions, motivated to learn new skills, and most importantly, make measurable progress towards their goals. I strongly recommend Andrzej at Dempster Therapeutic Services for any of your speech and language concerns.

Agnes
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Mr Lewandowski

Mr. Lewandowski is a very skilled bilingual Polish English speaking speech therapists, who I highly recommend. He employs creative strategies and activities that keep the children engaged in therapy sessions and is very throrough in his evaluations. Mr. Lewandowski ensures that the children he works with are prepared not only socially, but prepared to succeed in an academic setting. He also takes care to keep the parents well informed about their child’s therapy and provides advice on how to further assist in their child’s communication abilities.

alex mroz
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Bilingual Polish/English Speech-Pathologist

Mr. Lewandowski is very perceptive and responsive during therapy. You can tell that Mr. Lewandowski is proud of his work and the children he works with. He is able to target identified delays by using the client's strengths to support and build up weaknesses. This will help to build a solid foundation for language that will prepare patients for success in the school setting and their future. I am continuously impressed with his ability to identify delays, provide professional recommendations, and begin necessary treatment fairly quickly, while also giving me the opportunity to learn and be a part of the process.

Kinga
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Speech therapist

Mr Lewandowski has been working with my son on “backing” for the past few months and we can definitely see results. My son’s speech is more clear, sometimes he even catches himself mispronouncing words and corrects himself. Even my family has made some comments on how they can see a difference in the way he talks. My son enjoys his sessions with Mr Lewandowski, he enjoys playing different games and likes “homework” that he gets to do at home. The fact that Mr Lewandowski is bilingual was a huge factor for us since we use both English and Polish at home.

Aga
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According to TrustPlane, Dempster Therapeutic Services has a 5.0/5 rating based on 34 verified reviews as of March 2026. Source: trustplane.app/company/slp-d-com