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Patient Testimonials

I just had a massage from Robin and I feel so much better! I came to her because I was feeling tightness and an achiness in my neck, shoulders and upper back. The difference before and after seeing her is amazing. She really knows what she's doing! She knew the exact spots to focus on to release the tension in my muscles, all the while checking in with me to make sure I was comfortable and feeling OK with the pressure she was applying. I highly recommend her!


- Alison R. 11/2/2018
For years I have had a pain/tightness in my left arm and hand. There was nothing I could do to fix it. But after the first visit to Dr Nancy Mark, I felt all the strength that had been cut off return and it felt really good. I highly recommend chiro to anyone interested.


- Christian P. 9/8/2018
These are the best chiropractors I have had in a long time, educated fingers that is what I call what they have. You don't have to tell them what hurts, they know by simply feeling your neck and back. Even though I have arthritis in my neck and lower back the Drs have been able to free up my movement and reduce my level of pain significantly.


- Shari J. 8/16/2018
I am the owner of Gabrielsen Building who is known on the North Fork as one of the finest builders. I look for that in a chiropractor as 45 years in the business takes it's toll. After visiting different chiropractors through the years, I came across Dr. Glen and he has adjusted myself many times with outstanding results. He is the best, or so I thought. This past November 2017 I had a bad fall in the woods and ended up with severe whiplash. My headaches were keeping me up almost all night. They were so severe that sometimes it felt my head would explode. I am not the person to take pain killers so I went in to see Dr. Glen. I also had Dr. Nancy work some appointments and she is just as good as Dr. Glen. After about ten appointments with them both, my headaches are gone. Now I can say, they are both the best! They are skilled in so many areas of their profession. You do not need to look any further.


- Tom G. 6/14/2018
Both Dr. Glen and Dr. Nancy are excellent. Very intuitive too and versed in many techniques. They are genuine and also genuinely caring which is further reflected in their caring staff. I love, too, that they are progressive and forward looking, offering programs to help the whole person. Thank you for being here!


- Frances S. 5/24/2018
In my many years of needing Chiropractic care, I have never had Dr’s that are even on the same planet as Dr. Glen & Dr. Nancy. You never have to tell them the problem, they're that good. I have moved but always find my way in for an adjustment when I’m in town. Also both the nicest people you will ever meet.


- Kerry K. 5/23/2018
Love Dr. Nancy, backed by a wonderful and caring staff. I look forward to my weekly Wednesday morning treatment. 


- Adele W. 1/24/2018
How freeing and exhilarating it is to have the channels open with light and healing energy freely flowing through me! Thank you, Dr. Glen!


​- Frances S. 1/14/2018
My name is Victoria and I have been coming here since I was 3 and I am now 17. I am writing this to express my gratitude towards Dr Nancy and Dr Glen. I am so appreciative of all they have done for me and I would not have it any other way. They have always been there for any injuries or just in general and I appreciate it immensely. Thank you all so much.


​- Victoria W. 9/17/2017
Drs. Glen and Nancy are the best chiropractors in this area. I have been seeing them for the last 3 years and it is the first time my back and neck have not been causing me pain. Also, I have Hypothyroid condition and since I have been getting adjusted my medication has gone down and I have been feeling less fatigued. I would highly recommend getting adjustments regularly.


- Barbara M. 8/30/2017
Hallmark Chiropractic was a blessing to find. New to the Riverhead area, I was unsure where to find a chiropractor that actually cared about my progress. Fortunately, I found TWO!!! Dr. Glen and Dr. Nancy are skilled, professional and compassionate. The staff is polite, professional and educated. I have only been a patient for a short period of time and am feeling relief of my ailments. Thank you Dr. Glen and Dr. Nancy.


​- Susie E. 8/3/2017
No other chiropractor has been able to adjust my neck for what had been years. Drs Glen and Nancy are the only ones that aligned my neck and found the other problems I was suffering with. I have not felt this pain free in years!


​- Rosanna G. 7/17/2017
Glen has been the best chiropractor I have seen and I have been with many. He has straightened my entire structural system and my body has responded with delight.


- Shelly S. 7/17/2017
Husband and wife team, family friendly.


- Laurie D. 6/21/2017
Drs. Glen and Nancy are two of the finest doctors I have ever known. Their hands and hearts are second to none. It is such a gift to be adjusted by them.


- Ricky H. 5/18/2017
Dr. Glenn and Dr. Nancy are just wonderful people. I have been going to them for many years now and wouldn't want anyone else taking care of me. Just a friendly and relaxing environment and they both truly care about your health.


​- Christina B. 3/4/2017
I have been going to Hallmark Chiropractic for just over a year. Both Glen and Nancy have really improved my quality of life with my back treatment. The massage therapist, Robin is terrific and knows exactly how to handle my aches and pains. I actually look forward to my weekly visits there. The combination of the massage and adjusting have made my golf game so much better with no more back pain after I play. I can now rotate my hips and drive the ball a lot further then I used to with no discomfort. Also, the office staff is very professional and accommodating.


- Michael T. 3/1/2017
I have been seeing Dr. Nancy since June of 2016. I can't say enough about her skills. I was suffering from lower back pain and sciatica pain down my right leg. Through Dr. Nancy's adjustments, stretches and overall kindness, I am now much improved, walking 100% better, and in maintenance, with adjustments weekly. Additionally, the entire staff are warm, lovely people to do business with. Thank you!


- Georgeanne W. 1/7/2017
I went to Dr. Glen about 2 years ago, looking for a quick fix for a chronic problem. He gave me the quick fix, more importantly, he started me on a path towards a healthier neck and back. Dr. Glen listens to me, never rushing me to get to his next patient. Let me say it again, he listens to me like no other Chiropractor or Doctor ever has. Since I've been going to Dr. Glen, my neck and back spasms have decreased over 95%. When my back does spasm, it lasts less than 24 hours. In the past, my spasms could last up to three weeks or more.  


- Gary B. 12/12/2016
Dr. Glen & Dr. Nancy have been incredibly helpful in keeping myself and my entire family healthy. My children started when they were just a few weeks old! Doctors Glen and Nancy have helped us conquer migraines, bowel regularity, attention deficit, and currently adolescence. They were they first to be called when one of my (then) toddlers fell off the top of a swing set! Both Doctors Glen & Nancy give care that is priceless! They are terrific life coaches as well!


​- Mimi D. 10/19/2016
I've been to a dozen different Chiropractors and hands down, Hallmark Chiropractic is the best Chiropractic team around! Just recently, I injured my coccyx and Dr. Glen Mark has performed miracles! Dr. Glen and Dr. Nancy Mark have helped to eliminate my migraines and sciatica too. The staff is lovely as well! I will be forever grateful to these Drs. They have changed my life and health!


- Evanna C. 8/22/2016
I have known chiropractors most of my adult life. I almost became one in the mid 1970s and understand how powerful chiropractic treatment, properly expressed, is for overall health and emotional well-being. I'm approaching 70 and stay in shape. I have been to a few Long Island chiropractors for a "once in a while" adjustment. I say without hesitation and in all candor, Dr. Glen Mark is second to none at what he does. His ability to diagnose and then apply techniques that many of his contemporaries do not; gives him and his patients a significant advantage in understanding, achieving and maintaining health and well being. I highly recommend Dr. Glen Mark. Keep up the good work.


- Stephen W. 6/23/2016
Dr. Glen Mark, Dr. Nancy, Susie and the entire staff are wonderful. I am able to live a much happier pain free life because of Hallmark Chiropractic. Thank you so much for your time, care and your example of living life to the fullest.


​- Pauline L.  4/25/2016
Fantastic, knowledgeable above all other practitioners, chiropractic & beyond in my experience. Dr. Glen is the best! He manages to find the points & puts Humpty Dumpty back in alignment.


​- Margo S.  4/11/2016
Dr Glen is the rare breed of Dr that actually gets it: he realizes that it’s not only the physical that needs healing but a lot of times it’s also the mental. What an absolute rock star as a person and a Dr; to have the ability to make you feel like you’re his number one priority every single time you visit him is amazing. He has that special something, that thing they can’t teach you in school, the ability to connect and put you at ease. I have recommended friends and family to the good Dr and their feelings are the same as mine.


​- Harry S.  4/8/2016
Dr. Nancy is AOK in my book. Gives a great adjustment with good stretches and releases sinus pressure points.


​- John B.  3/23/2016
For many years I suffered from debilitating headaches. An MRI showed A bulging disc, in my neck. All doctors gave me were pain pills, which I dislike taking. These heaaches lasted for several weeks, making work and life in general very difficult. . When begging off a meeting because of pain,my friend insisted I go to Hallmark Chiropractic. I was always afraid, but, she insisted I would get relief. I called, and got an immediate appointment, with Dr. Glen Mark, who listened to me explain how I felt. After a few minutes of no pain treatment, I headed home. By the time I got home, ten minutes later, I had no headache! I could not believe it. I saw Dr Glen three tmes a week for about a month. Now I see him as soon as I feel the neck pain start maybe every othe month. I tell eveyone about Hallmark.

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- Lyn T.  3/4/2016
Dr Glen Mark is the best! He has treated me for many years and is very talented. He always explains the treatment, what is affected and what the expected outcomes should be.  Would recommend him and his wife to anyone looking for pain relief or chiropractic wellness. 


- William G.  2/27/2016
I've been going to chiropractors since I was 14, I'm now 72. 

Hallmark Chiropractic is by far the best D of C I know.  No fancy machines, just good Chiropractic practices and measurable results.



- Leon G  2/17/2016   
I love alternating between Dr. Nancy and Dr. Glen.....their subtle differences give me a balanced health experience. Both their knowledge of health and living a holistic way of life still amazes me after all these years!


​- Tish G.  1/20/2016
I don't like or go to any doctors EXCEPT Dr. Glen who I trust completely!

- John B.  1/16/2016
As always , simply the best in every way.

​- MH K.  1/15/2016
Dr.Glen has a gift. I am indebted to him for "keeping me in the game". He enjoys sharing his knowledge which then helps me better  understand my situation. He is very caring and patient and has a great sense of humor. I do not know where I would be without him!


​- Gary S.  12/31/2015
As you know, I have been a patient for  many years.  You have always given me an adjustment that makes me feel better.  fyi, I have had chiropractic care since my early thirties.


​- Jeanne W.  12/5/2015
Dr Glen and Dr Nancy are the best chiropractors around. I have had neck and back issues for years. In an instant, they can find the exact source of the pain and adjust me, eliminating my discomforts. Eveyine in the office is very pleasant. Whenever I call, they get me right in.


​- Rochelle D. 11/30/2015
I live in NYC all year round and look forward to seeing Dr. Mark on the days when I get out here during the week. He is amazing! I walk out of his office feeling so much better than walking in. He is amazing! (Did I say that already?)


​- Alyssa S.  11/27/2015
I've had a great experience with Hallmark Chiropractic during the last six months. I came in with severe back pain and spasms and began to feel relief immediately after the first visit. Pain killer and a muscle relaxant had not helped at all. Both Doctor's Glen and Nancy could not be nicer, more thorough or informative. Their ability to pinpoint the source of pain and alleviate it through gentle corrections is amazing. They are good people who are generous with their time and care. My teenage daughter got relief from an injury as well. Robin provides massage therapy and is also excellent. I'd recommend this practice to anyone.  


​- Ray S.  11/13/2015
 I can never say enough great things about this office.  Dr Glen has a God Given gift. 


​- Gary S.  11/6/2015
Dr Glen is not only an amazing chiropractor but an even better person. Some people are just natural born healers, from the time you walk in the front door and are greeted by his staff to his amazing medical and personal skills you leave his office feeling better physically and mentally. Great guy, great staff, great experience!


- Harry S.  10/30/2015
​Dr. Mark is that elusive facilitator of healing that comes around once in a lifetime. I am so grateful to be his patient. His intuitive response to tactile feedback and invaluable clinical experience are a natural bridge to successful treatment. I thank you from the bottom of my heart.


- Michael L.  10/23/2015
I still think there must be a magnet in the fingers ! To go immediately to the right spot !!


- Mildred C. 10/2/2015
They are amazing doctors. I go there in such pain and leave feeling instant relief. The day I met Dr. Nancy and Dr. Glen was the day I hit lotto!!!


- Alice P. 9/24/2015
I really like Nancy and Glen. They are the best Chiropractors I've been to! I'm so glad that I've found them! They both have done a great job on my mother and I and I have told do many people about them. Again, truly grateful to have found them!


- Antoinette D. 9/4/2015
You are the best! I am so grateful for you in my life! The technical and the human are so beautifully blended! Thank you and bless you!


- Rani C. 8/3/2015
Dr. Glen Mark's expert technique, astounding intuitiveness, and genuine caring have expanded my range of motion and the realm of my physical wherewithal. I am a grateful patient who will never take for granted the positive impact Hallmark Chiropractic has had on my life.


- Michael L. 8/1/2015
I have been seeing Dr. Mark for over 10 years. I cannot imagine life without his adjustments! They help me feel more balance and less pain from daily stresses on the body. Not only are Dr. Mark and Nancy wonderful Chiropractors, they are wonderful, kind, loving compassionate people! What a find.... My husband is forever grateful I introduced him to them as well.
I recommend everyone to try them and your life will be so much better!!!


- Pauline L. 6/26/2015
Dr. Glen knows just how to adjust you to fix your back and other skeletal problems. He takes the time to explain the what and why he is doing. He also takes the time to answer any questions that you have regarding Chiropractics. He is extremely knowledable. He has helped me many times when I have been in severe pain and with a few adjustments, he put me back on the right track. However regular maintenance is important for sustained good health. Dr. Glen is a caring doctor and I highly recommend him.


- Terri D. 6/26/2015
I've known and have been treated by Dr. Glen and Dr. Nancy on and off for over 12 years. 
More than anything else, this is continuing to help my body heal and I'm making great progress.
I've been into holistic health and chiropractic for apx. 40 years. I've only experienced such exceptional treatment and care a couple of times prior to being with Hallmark. They are a rare find!
Excellent! I recommend coming here for treatment and learning about how it works through their personalized workshops. <3


- Frances S. 6/17/2015
I love coming here to get adjusted. Both Glen and Nancy are great. They have helped me a lot and my mom also. And the girls at the desk are great too. They are so easy to talk to and have a great sense of humor.

- Antoinette D. 6/17/2015
Dr. Glen was present, empathetic, and most of all, knowledgeable and skillful in relieving a stabbing pain in my back. It was my first visit to him & I'll definitely go back as needed. I was so fortunate to have found him & that he was available. Excellent chiropractor! I recommend him highly.

- Margo S. 6/16/2015
Best Chiropractic Anywhere!

I had back and neck adjustments today. I love how Dr. Glen is able to zoom in on the spots that are sore and adjust them away.

- Pat M. 6/5/2015

Our experience has always been very satisfactory, and continues to be.. We've been going to Dr. Glen for years, and wouldn't go anywhere else.

- Jack H. 5/30/2015
Relieved my pain more than expected. Quick, easy and very professional.

- Harvey G. 5/21/2105

My appointment relieved my stiffness and improved my overall discomfort.

- Henrietta C. 4/28/2015

As always the treatment works and I look forward to my visits. Dr. glen is always professional and friendly. I have and will continue to recommend his services.

- Virginia Z. 4/27/2015

As always, Dr. Glen got right to the problem and relieved it...

- Gary S. 4/15/2015

Good to be back

Started with a message after being in Florida for three mos. and the long drive home. Message was excellent and so was the adjustment.

- MICHAEL Z. 4/13/2015

great experience

so happy to have found a wonderful chiropractor in.my new hometown!!

- Debbie Y. 3/31/2015

The Best

The Best

- Rani J C. 3/27/2015

Feeling Relief!

After suffering with back muscle spasms for a week, I couldn't wait to get to see Dr. Glen! He adjusted me and I immediately felt relief. I know that follow-up adjustments will bring me even greater relief and I scheduled my next appointment right away. I can always count on Dr. Glen to help my back feel better.

- Terri D. 3/10/2015

Best treatment

This is a good news, bad news review. The bad news is I have had back issues for a long time. The good news is I have Hallmark Chiropractic. The whole office works to make treatment a smooth affair. Treatment is not always painless, but the results are fantastic. I have and will continue to recommend friends and family to this office.

- JOSEPH O. 3/3/2015

I know I should go more often.

Those magnetic fingers go right to the right spots !!

- Mildred C. 3/2/2015

Very good! Both doctors made me feel very comfortable. Answered all my questions. Very informative. Good listeners. Very patient.

- Karen F. 2/23/2015

we can't wait to go back-

i was very impressed the way they ran things-- very efficiant-- very friendly----very outgoing and willing to help----very knowledgeable -- so glad my mother and i stopped there---

- antoinette d. 2/14/2015

AWSOME GREAT PEOPLE

- DENNIS H. 2/10/2015

Hallmark Chiropractic

I've never been to a chiropractor before, but my first experience at Hallmark was a pleasant one

- Oran D. 2/4/2015

Dr. Glenn has the magic touch

Dr. Glenn Mark is very professional as well as a very fine and caring individual. He is able to tell by feel where my problem areas are, and addresses them. I've been treated by many chiropractors over the years, Dr. Glenn is absolutely the best. I highly recommend him.

- Wes W. 2/2/2015

Best Chiropractic care I’ve had!

Dr. Glen has been taking care of my Chiropractic and my wife’s Chiropractic needs for many years and I am very well pleased with the quality of his care. I have a good time in his waiting room the patients are friendly. When Dr. Glen sees me he is genuinely concerned about my wellbeing. I have had many heath concerns throughout the years knee pain, back pain, wrist pain, and many other health concerns usually job related. After I give a brief description of what is going on Dr. Glen makes the adjustments I need, explains what I need to do, And I always feel better. The receptionists are such a pleasure, always cheerful, attentive and helpful. I can say that the Chiropractic care I receive at Hallmark Chiropractic has been nothing short of totally awesome.

- Andrew P. 2/1/2015

Love this office!

- Rochelle D. 1/30/2015

Wonderful

I reviewed my prior visit and hit submit before I was finished. There is also a massage therapist named robin - who I have not been to yet but am sure she will be top notch as well. There two assistants - Susie who I have not met yet - and Alicia,, the first person I met and the last person I saw - she is knowledgeable, pleasant, patient and personable. I am so fortunate to have found such an all around wonderful caring chiro place!

- Virginia V. 1/29/2015

This is my forever chiro!

Absolutely fabulous! Real chiro service with hands on therapy. I am thrilled I found hallmark and they take my insurance as well. Even if they didn't take my insurance, I would still go here. My very lucky day!

- Virginia V. 1/29/2015

You and your staff have always made me feel special. You all have gone the extra mile....at every appointment.Your staff is positive, kind,caring and efficient. You have many patients and yet you guys STILL remember my favorite room. Simply put, YOU ARE THE BEST. I recommend you all the time.

- Cathy B. 1/27/2015

Caring Chiropractor

I went to Dr. Glen with muscle pain in my back. He pin-pointed the sore spots immediately. He found sore spots that I didn't even realize were contributing to the problem. He explained exactly what was happening anatomically that was causing my problem.

- Donna C. 1/26/2015

Felt very comfortable seeing as how it was my first visit.

- Theresa A. 1/26/2015

fantastic

I always dreaded going to any doctors office, but this visit I look forward too always!! everyone there is so polite & friendly, its a pleasure, dr. glen is the best!!! and dr. nancy too I see her less ofter

- colleen o. 1/24/2015

Dr Glen is awesome!

Great Chiropractor.

- John B. 1/24/2015

Always a great experience!!!

Drs. Glen and Nancy are life savers!

- tish g. 1/23/2015

Always love visiting Hallmark Chiropractic. I feel great when I leave and look forward to my next appointment.

- Barbara M. 1/21/2015

The highest compliment our patients can give is the referral of their friends and family. Thank you for your trust. Help others by spreading the word! Mention us on Healthgrades.com