The Source Specific

Fantastic experience: I visited the Specific Source and Dr. Nathan Berbereia as a new patient today. I am suffering from a pinched nerve in a cervical vertebrae causing severe pain in my arm and shoulder. After his initial adjustment, I left with a better range of motion and less pain. I was very impressed with Dr. Nathan and his staff. I highly recommend him for you Chiropractic needs. Thanks to the Specific Source for a job well done. I will be back, Steve Atkisson.

Fantastic experience: Great and friendly service. I walked in and they got right to the point and I was on my way

Fantastic experience: Been coming here for close to a year now and couldn’t be happier. I’m a carpenter by trade and a gym rat so I’m always messed up one way or another. These guys are super flexible with scheduling and Dr. Nathan gets you in and out faster than any other place I’ve gone too. First time 30-45 mins and then after that it’s 10mins tops. I’m usually still catching my breath when I’m walking out the door. REASONABLE!!! $$$$$

Fantastic experience: Nathan really cares about the people that come to see him.When you tell him whats going on, he can address that specific issue. He's great.

Fantastic experience: I would definitely recommend The Source Specific to anyone. They are very nice and very helpful.

Fantastic experience: Dr.Nathan always does a great job! Sad to be moving because I will lose a really trustworthy and reliable chiropractor.

Fantastic experience: Dr Nate is beyond awesome! Regardless of what your issue is, follow his treatment plan and you won’t be disappointed with the results. Just left his office again and can’t believe I’m breathing so much better!! Who knew he could also treat my chronic sinusitis and get my pathways open and draining again… I LOVE this Office!!

Fantastic experience: Great people. It's already helping my son and I! Highly recommend the Source Specific!

Fantastic experience: The overall service was top notch. I left feeling better than I have ever felt after leaving a chiropractor! Would definitely recommend! A+++

Fantastic experience: Highly recommend Dr. Nathan for back pain. I have a long history of back pain and Dr. Nathan always helps me get back on my feet.

Fantastic experience: Always does the job right! I trust no one, better than Dr Nathan to fix my issue.

Fantastic experience: As of January 21, 2026 I continue to have a great experience. Always the best. I feel better after every adjustment. I have been a patient at the Source Specific for many years now. I never leave without feeling better. Over a year ago, due to a lot of travel and a slip and fall, my hip was aching. Well, Dr. Nathan fixed me right up. My hip was out slightly and he got it back in. The Source Specific has kept me vertical and on the go. Every visit gets me back in alignment. I walk in with pain and walk out with no pain.

Fantastic experience: I’ve always had a great experience at The Source Specific!! Dr. Nathan is a great Chiropractor!! I always walk out feeling better, and today was no exception! Thank you so very much. I love my chiropractor! Thank you ❤️

Fantastic experience: We love the Source Specific! Dr Nathan has helped every member of our family with various things. Our 8 month old was not wanting to transition from sitting to all 4s, was only army crawling. He found some tension in her lower back and after one adjustment earlier today she is making the transition (with guidance). I cant wait to see what happens after a few more adjustments!

Fantastic experience: Came in for some hip pain that was making it difficult to sleep and walk. I immediately felt relief after the adjustment. Great service, thorough and helpful!

Fantastic experience: Very professional I like the fact that your first appointment you get x-rays so you know exactly what you’re dealing with. Everyone is always smiling and so welcoming, Highly recommend!

Positive experience: My first visit was wonderful so I returned for a second visit. Not happy the second time. It felt too "salesly" and he wanted me to pay $1000 up front for 16 treatments. A big red flag about any business is when they pressure you to sign up for a ridiculous number of visits and tell you it is necessary. Dr. Killie never did that to me. Sorry, I am taking my business elsewhere.

Fantastic experience: Dr. Nate is absolutely the best out there!! if you want real, chiropractic care and upper cervical, he’s the person. I refuse to go anywhere else. I’ve been taking my kids there since they were infants. His adjustments have cleared up many ailments for us.

Fantastic experience: My experience here has been wonderful. I have been having problems with numbness.In part of my tongue with TMJ also tinitus in my ear. Though some of it may not be 100% reversible, they have made my symptoms much more manageable, and I feel more myself. Less headaches and able to sleep without pain and discomfort. Both the receptionist is kind and the doctor himself makes me feel very comfortable, and that is a big thing when this involves your spine and neck getting pushed around. If you're thinking of giving them a try, I say, please give them a try.

Fantastic experience: Dr Nathan doesn't incredible job. He's very knowledgeable and a very skilled chiropractor. I highly recommend him.

Fantastic experience: Dr Nathen is simply the best. Came in today battling a migraine and a few quick adjustments later feeling SO much better and can function!! Client for life.

Fantastic experience: I can’t say enough good things about my experience with Dr. Nathan. From the moment I walked in, the staff was warm, professional, and genuinely caring. After just a few visits, I noticed a huge improvement in my mobility and pain levels. What stands out most is the personalized care — it’s never a rushed, one-size-fits-all approach. You can tell they truly care about helping patients feel and function better.

Fantastic experience: I have been going to Dr Nathan for 2 years. He is the best. I always feel so much better after my adjustment.

Fantastic experience: Dr Nathan is an excellent practitioner! I always feel so much better after being adjusted.

Fantastic experience: Victoria, the assistant, was pleasant, and Dr. Nathan was quick and effective. The pain went away right after he adjusted my right knee. Extremely delighted!

Fantastic experience: Everyone was so nice and I feel so much better. Thanks guys!

Fantastic experience: Dr. Nathan is absolutely the best! I’ve been seeing him for adjustments over the past 5 months, and it has made a major difference. He takes the time to truly understand your situation and shows genuine care for his patients. He’s been an integral part of my nervous system healing journey!

Fantastic experience: We love & appreciate Dr.Berberia and his staff at The Source Specific. He is always attentive to our needs and gets us back in alignment to enjoy life to the fullest!

Fantastic experience: Great chiropractor. Always listens to what’s bothering me, and adjusts where needed.

Fantastic experience: Great staff and excellent service. I enjoy and look forward to my visits.

Fantastic experience: Dr Nathan and his staff are THE MOST caring, attentive, loving and skillful Healthcare facility you'll ever encounter.

Fantastic experience: I have been a patient of Dr Nathan's for about 17 years. Because my neck is always an issue and he specializes in upper cervical, it's a perfect fit. I have sent family and friends to him and will continue to do so.

Fantastic experience: Dr. Nathan was fast, efficient and most importantly provided some immediate relief from a months long neck issue…. Book the appointment!

Fantastic experience: Dr. Nathan was great! Explained the problem and a course of action. I've been suffering with dizziness for the past 2 years. Now hopeful!

Fantastic experience: Dr Nate always has time to get me in when needed. Very professional relaxed office and he asks questions before adjusting you. And doesn’t ask you to keep coming back, only if you feel it is necessary. Been going here for around 5 years and will continue. Office manager Bailey is always very pleasant and professional

Fantastic experience: I always leave feeling better. Staff is always friendly and shows true concern when I am not feeling well. Receptionist called to check on me when I had emergency surgery last summer.

Fantastic experience: Dr Nathan is awesome! Helping me with my vestibular issues.

Fantastic experience: Amazing experience! Nathan is an experienced professional and implements a very gentle yet effective technique. I highly recommend him!!

Fantastic experience: Had a great first time experience! Dr. Nathan was incredible and helped me fix up my back!

Fantastic experience: I have been going to Dr Nathan for over a year now and he always does a great job they also have great staff I recommend him via word of mouth all the time!

Fantastic experience: Have had great results going to Source Specific. They are so friendly and kind. Very professional and yet also feels like a warm welcome in to their home.

Fantastic experience: Dr Nathan is very proficient and efficient with his adjustments. Even after a year following a series of intensive adjustments, the C1 area that he worked on is still holding its alignment. I could get chiropractic services covered by my insurance if I went to their in-network providers" however I feel so highly of Dr. Nathan that I still choose to stick with His services and pay out of pocket. His office also has a very friendly, relaxed atmosphere. I enjoy going there. Bailey, his receptionist, is also awesome! And, you can ALWAYS get in when needed!

Fantastic experience: Dr. Nathan’s kind staff squeezed me in his schedule, and he literally relieved me from the pinch I was in. I actually look forward to returning to the doctor! Thank you!!!

Fantastic experience: Doc Nathan is exceptional he works pretty much my entire family and friends, great job, LOVE WALK IN POLICY

Fantastic experience: Dr. Nathan was very thorough while taking care of my back discomfort! He explained what he was doing, and what might’ve been the cause. Very professional and friendly! I would highly recommend Dr. Nathan to anyone seeking chiropractic care!

Fantastic experience: Dr. Nathan is always so positive and friendly. He really listens and seeks to understand what your needs are. I always feel better after my adjustments.

Fantastic experience: Great people, efficient, will work you in at anytime. So thankful for Nathan Berbereia always willing to help myself and my family! Even extending a purchased package over a year later and letting my daughter take my spot! That is customer service! Front desk 5 stars top notch!!

Fantastic experience: I live 90 minutes from The Source Specific, and it’s usually a last-minute trip. They are always so good to get me in with a quick phone call! And then I look forward to feeling better by the time I get home!

Fantastic experience: Dr Nathan and Bailey are the best!! They are kind, caring, very professional and accommodating . I can always get in when I need to, and never have to wait. I always feel so much better after an adjustment.

Fantastic experience: Dr Nathan is an excellent chiropractor! He has helped me so much with my neck & spine! He is the best chiropractor in Springfield!!

Fantastic experience: I have been having a lot of pain in my foot I’ve had trouble walking. He worked on it and I walked out with no pain. He is amazing!

Fantastic experience: Needing to go to a chiropractor sounded super scary to me when I realized I needed to go! I’m somebody that would typically need drug into the doctors or any sort of medical appointment! However Dr. Nathan & his staff are very welcoming and reassuring. When he does adjustments he’s gentle yet effective, which makes my appointments a breeze! As long as he’s in business I’ll be a repeating patient. I’d recommend him to anybody that might be hesitant on choosing a chiropractor. He’s earned my trust, and I’d recommend you trust him for your chiropractic needs as well!

Fantastic experience: I appreciated the ease of scheduling online and the thoroughness of the medical history. I am also very thankful that Dr. Nathan took my concerns about my knee seriously and is helping me get back to running!

Fantastic experience: Always a great experience. Showed up an hour before my scheduled appointment, and they got me right in. Everyone is personable and friendly!

Fantastic experience: Did you know that Dr. Nathan can help you with ear pain? I had a nagging aching in my ear and after seeing him and his adjustment I was pain free. I even flew the next day with no problems. My overall health has improved since I started treatments with Dr. Nathan. I recommend giving him a chance; he's an honest, kind, and professional chiropractor.

Fantastic experience: I went in with a lot of pain, especially in my neck and shoulders. Dr. Nathan was great. He saw problems right away, did a few adjustments and I left feeling lighter and more relaxed. I look forwrd to this healing journey.

Fantastic experience: My back felt better immediately after Dr Nathan was finished. Would highly recommend him! The staff was also helpful and nice. 10 stars!!!!

Fantastic experience: Dr Nathan is very kind, thorough and knowledgeable. I felt right at ease and cared for during my visit!

Fantastic experience: I was very scared 1st time for chiropractor. By the end of session I started to feel so much better. Pain was gone on my knees, neck and back. I am so glad I went. Nathan is very good at what he does. He explains things very well. My plan is to get my body working the way it was intended. Making another appointment! Thank you Dr Nathan Also Bailey is such a friendly receptionist. She is warm and welcoming as soon as you step into the office. Thank you Bailey Thank you

Fantastic experience: Dr. Nathan and his staff are great! Our 7 year old son is getting treatment for his ADHD and I am already noticing a difference with his focus and being more calm.

Fantastic experience: THE BEST AT NECK ADJUSTMENTS!!!! I have been saying Dr. Nate for YEARS. He not only is great at what he does, but I always leave in a better mood because Dr. Nate is ALWAYS in the best mood!

Fantastic experience: As a 35 year professional truck driver having a good Chiropractor is a must. The Source Specific fits the bill. Never disappointed.

Fantastic experience: I could barely walk when I arrived. Could not bend at all. I felt much better and had more flexibility immediately after my adjustment. Dr. Nathan is awesome! Both he and Bailey are very caring and friendly. So thankful for them!!

Fantastic experience: So happy I found Dr. Nathan Berbereia! I called over the weekend while the office was closed and the office staff was awesome and got right back to me Monday and got me an appointment that same day! I suffer from migraines and he got me straight, I feel so lucky to have found someone that specializes in Blair Upper Cervical. I will continue to make the hour and a half drive to some see The Source Specific!

Fantastic experience: I have been going to the source specific for over a year now, and I don’t plan on changing chiropractors anytime soon! I started going to get adjusted during my time as a collegiate athlete, and I learned very quickly that Dr. Nathan has exceptional knowledge in his field but also their team genuinely cares about their patients. I wish I could give this place more than 5 stars!

Fantastic experience: Short wait, everyone was friendly, and even though it was my first visit I left feeling much better than when I went in.

Fantastic experience: I was slightly nervous during my first visit, but the team made me comfortable. They were fast, friendly, and kind, which helped ease my nerves. I truly appreciated the professionalism.

Fantastic experience: Highly recommended if your back's out of whack and you're feeling anything but terrific come see Nathan as Source specific

Fantastic experience: I was able to get back to an active life after an adjustment. Very thankful they could work me in at short notice.

Fantastic experience: Dr. Nathan and Bailey are so deeply missed, since I left Springfield, Missouri. It has been a Extraordinary Powerful experience with Dr. Nathan's amazing Innate Gift, that he has brought to all Humanity and animal kingdom. Dr. Nathan for the 1-1/2 yrs. having his special techniques, in awakening my body to its natural state of wellness. Dr. Nathan is a Gem for us all...Deep Gratitude, and Appreciation for His Special Light Gift. Front Desk Manager Bailey, shares her Beautiful Light also to everyone, and has always been such a High Positive Light, and has always been able to adjust my schedule with Ease and Grace.I Miss you Both, Thank You, Thank You, Much Love to you both and loved ones.

Fantastic experience: Great 1st experience! I was Heard, there was a customized approach (very customized/adapted!), encouraging, complete, clear approach to care plan, and…. Even 1st visit results. ❤️ Nothing else to add!

Fantastic experience: I continue getting all the help I need to function and maintain my activity level! I wouldn't want to be without Dr. Nathan's wonderful assistance!!

Fantastic experience: Dr Nathan did a great job and I left feeling much better. His staff was very welcoming and friendly. I highly recommend The Source Specific and it is well worth driving 90 min for treatment!

Fantastic experience: The nice young woman working the front desk is always so kind and welcoming. And I love the flexible schedule and the ability to get an appointment to e same day most times.

Fantastic experience: Very friendly and I noticed a difference in my pain level when I was done getting adjusted. I would highly recommend this chiropractic clinic.

Fantastic experience: I love going here! He always listens to my concerns for the trip and always gets the problem taken care of! 10/10 recommend

Fantastic experience: I always appreciate the friendly greeting and warm welcome. Dr. Nathan is prompt and supportive.

Fantastic experience: Dr. Nathan is simply the best. I came in hurting and he zeroed in on my problem and had me feeling better right away!

Fantastic experience: Great people and environment. Dr is great at fixing me without hurting me. Since switching to here I have felt better than I have in years.

Fantastic experience: I was extremely concerned about finding a new chiropractor after my previous chiropractor suddenly retired from illness. I have had several previous chiropractors cause worse injury to my neck. It turned out to be a blessing in disguise for me when I changed offices due to the broader range of treatments provided there. I have been extremely happy with Dr Barberia's skill level and expertise, not only in upper cervical but extremities as well. I refer everyone I know to him. Go see him. You won't be sorry!!! I'm just going to add to my already existing review to say that I started doing spinal decompression a few weeks ago and I feel like it's making a difference. I'm excited to see how I feel once I'm done with the 6 sessions I purchased.

Fantastic experience: We were really hoping to find a chiropractor who doesn’t rely on the Snap, Crackle, Pop method of adjustments. We’re so lucky to have found one who uses a gentler approach. It was also super comforting to walk into a clean, professional space and hear worship music playing. We’re definitely customers for life now!

Fantastic experience: Great results, prices and people! Able to get me in asap. I've been going here for over 4 years and never had a problem.

Fantastic experience: Dr. Nathan Berbereia has been a tremendous help. I never had upper back problems before an auto accident. He really cares about helping and only adjusts what is needed.

Fantastic experience: Thanks for the 5 star service that has cleared my 'Dizziness' problems. I've been battling 'Dizzy' issues for decades and have tried pills, patches, even did a 10 week program at the Midwest Dizziness & Balance Institute with no luck. Dr. Nathan has my confidence back and feeling good. I can even ride in the back seat of a car without getting dizzy (which I haven't been able to do for decades). He's made a believer out of me. Thank you again!

Fantastic experience: After dealing with debilitating migraines, blurred vision, dizziness, pain in my knees, back pain, and anxiety/depression for the last 2.5 years I am back on track thanks to Dr. Berbereia. Nathan and Bailey are great people. I definitely recommend giving them a shot.

Fantastic experience: I had another chiropractor farther away, & he was good but he referred me to Dr Nathan & I've gotten even more relief. I rarely have scoliosis pain anymore.

Fantastic experience: Appointment set up was quick and easy. I was seen the same day as a new patient. Very pleased.

Fantastic experience: Dr Nathan is always wonderful! I called as we were coming in to town and they were able to get my daughter in quickly!

Fantastic experience: Can’t thank Dr Nathan and Bailey for their attentiveness. Dr. Nathan takes the time to figure out the underlying reason there is an issue and I truly appreciate it.

Fantastic experience: Nathan has done great things in adjusting me n working on specific places or past injuries. He is gentle when adjusting, I've used him for 4 years

Fantastic experience: Doctor Nathan Berbereia was recommended to my family by one of the top chiropractors in Spring Grove Illinois, Dr. Jeff Turnbull. Based upon his recommendation we saw Doctor Nathan and we have not been disappointed. When we have family members from out of town who visit we take them to see Doctor Nathan for an adjuster. I couldn’t recommend him more highly for his service and attention given by him and his support team.

Fantastic experience: We have used Source Specific for 3 of our children and in particular our daughter that has a scoliosis sacre. The orthopedic surgeon we do regular check ups with agreed thatthe adjustments our daughter is getting has clearly help avoid the need of surgery or a brace. Really good group to work with.

Fantastic experience: I had never been to a chiropractor and was a little apprehensive, but Dr. Nathan and his staff put me at ease with their kindness and attentiveness. I suffered for years with neck and hip issues. Working in the yard was very uncomfortable because bending over for any amount of time to pick things up would cause shoulder and neck pain. My hip was also painful when I was trying to sleep at night, so I was constantly tossing and turning. After a few visits with Dr. Nathan, the neck issues were gone and I no longer have hip pain when I lie down. This is seriously life changing. I also noticed a positive change in my overall mood, probably due to pain relief and better sleep. I’m so glad I set my fears aside and went in to see Dr. Nathan. It has always been a positive experience every time I’ve gone in. I love that I can drop in any time and they can work me in, or I can make an appt. Highly recommend!!

Fantastic experience: Very wonderful customer service, all the staff has been so kind and helpful. I feel better already after one visit. I would recommend Nathan and the team to anyone in need! Looking forward to my upcoming visits and bringing my son also!

Fantastic experience: This was my first visit with Dr. Nathan. My hip was misaligned and I have some significant issues with my neck and jaw, and limited movement in my knee without pain. After the visit I felt more relaxed and felt my body was rightly adjusted. I am hopeful for the first time to be on a road to feeling better and having fuller range of motion.

Fantastic experience: I had never been to a chiropractor before but I was having issues with my shoulder and my arm going numb, after just 2 appointments it was no longer giving me any issues!! I highly recommend this place staff is nice and very knowledgeable.

Fantastic experience: Dr. Nathan and the staff at The Source Specific are so amazing! They always go the extra mile to make sure I am taken care of and that I am being heard and helped. Their excellence and professionalism is a breath of fresh air. I highly recommend them!

Fantastic experience: It was such a pleasure meeting Dr. Nathan and his staff! Rarely do you find a professional that has such vast knowledge and a great bedside manner! I am looking forward to working with them to continue my health journey!

Fantastic experience: By far the BEST in the business. They are caring, quick to respond, and offer exceptional service. From the moment you walk in you know they are going to take care of you. I recommend them to everyone I know! Won’t go anywhere else.

Fantastic experience: My daughter and I both have immediate relief from back and neck pain after a visit to Dr. Nathan. He and his entire staff are very kind and professional.