John Armstrong, DO
Phelps Health
Specialties
Internal Medicine
Primary Care
Gender
Male
Special Interests
Diabetes
Heart disease
High blood pressure
Preventive medicine
Kidney disease
Liver disease
Lung disease
Gastrointestinal disease
Obesity
Endocrinology
Board Certifications
American Board of Internal Medicine
About Me
I’m John Armstrong, DO, and I joined Phelps Health as an internal medicine physician in September 2023. I see adult patients (ages 18 and older).
I offer wellness visits and can help patients with chronic conditions, including kidney, liver and lung diseases. I also see patients for heart disease and high blood pressure. As an internal medicine and primary care doctor, I have the opportunity to advocate for lifestyle and behavioral changes in the hopes of preventing serious diseases.
Growing up, I always enjoyed science. In fact, my undergrad degree from Missouri University of Science and Technology (Missouri S&T) is in chemistry. I began to notice that every time I’d attend a family gathering, one common theme would come up: healthcare, and more specifically, the shortage of primary care providers. As a problem solver – I come from a family of engineers – I wanted to help fill this need in my own community.
I was drawn to internal medicine after having several strong mentors in this field. The spectrum of practice is broad; I’m not limited to one particular type of disease.
Open communication between myself and my patients ensures that the care they receive is appropriate for them. I want them to understand the “why,” and I always educate my patients about any medical recommendations. Ultimately, healthcare decisions are up to the patients. My job is to provide my professional medical recommendation with the hopes of achieving the best potential outcome.
I'm originally from Pennsylvania, but moved to Rolla in 2003. My wife, Amy, and I have three cats. I enjoy hunting, fishing and being outside. When I get the chance, I also love woodworking, specifically building furniture.
I've always considered Rolla my home. I performed my clinical rotations at Phelps Health as a medical student, and it’s great to be back. This organization provides exceptional care, and I’m proud to be a part of the team.
Education & Training
Medical School A.T. Still University, Kirksville, Missouri
Residency St. Bernards Medical Center, Jonesboro, Arkansas
Awards & Honors
John Armstrong, DO, was awarded the 2022 Internal Medicine Resident of the Year at St. Bernards Medical Center.
Insurance
For a list of insurance carriers that Phelps Health accepts, please click here.
Ratings and Reviews
Provider Overall Quality of Care
The physician and advance practice provider star ratings are an average based on the data collected from the Phelps Health post-visit surveys.
4.9
4.9
out of 5
(512
Ratings,
122
comments)
What our patients are saying (Verified reviews from real patients)
Everyone in the office, including the receptionist, the nurse, and Dr. Armstrong, are just wonderful people, and I really appreciate being able to have Dr. Armstrong as my doctor. It was a blessing to get him. Thank you very much. Bye-bye.
Check-in was well done. Very few redundant questions from online check-in process. Also, my provider is very good about suggesting alternative ways for me to monitor and/or improve my own health care.
Pleasant surprise after seeing bravely in Salem
We appreciated that everyone with whom we had contact really treated us with respect. Dr. Armstrong listened carefully to us and understood our concerns and addressed each concern with definitive suggestions and direction.
Dr. Armstrong couldn't have been any more professional, cooperative, or instructive! It was a pleasure having him in charge of my case! I feel most confident knowing how willing he is to study my symptoms and situations and work with conferring doctors for the best possible outcomes.
It was a good experience
Dr Armstrong and his staff are always professional and friendly. He listens to my concerns and explains things so I can understand. I appreciate them.
My appointment was just for a check up on whether or not I had any issues which I didn't talk to I'm strong listened to what I had to say.
My PCM is the best PCM I have had in 30 years. Since I have autoimmune issues that can and have gone haywire, and become difficult to manage,that means a great deal to me
The doctor listened to the questions I asked and was quite knowledgeable and helpful in answering them for me.
Dr. Armstrong and the staff were all very professional!
Dr Armstrong listened and asked questions and had suggestions that have helped! Very pleasant person
Phelps is an excellent facility & staff as well!
Thank you.
Front the front staff, to the nurse to the doctor...all did extremely well.
I have received excellent care.
Really liked meeting Dr. Armstrong. He was very nice, listen to everything I said and asked great questions. I am going to really like having him as my doctor.
Staff and Doctor are the best!
Very professional
Everyone is very professional and very helpful.
Improvement not needed
I am very happy with Dr. Armstrong and the staff.
I really liked Dr. Armstrong and his entire team!
Answered all questions. Didn't feel like I was being rushed through appointment.
My experience was great. Good treatment.
Dr. Armstrong and his staff are excellent. The hospital itself is not.
There was no waiting either in the doctor's office or the laboratory. All went very smoothly and professionally.
Excellent Doctor and staff
Quick to respond. Obviously, well trained in what they do. From the ER front desk to recovery, no complaints, but many thank you'd.
I had several questions and Dr Armstrong answered the questions thoroughly and made sure I understood the answers.
With John and the office staff
Overall a really pleasant experience. Check in- This was the best check in experience I have had at Phelps Health. If you aren't using this guy to train other check in staff, you are missing a golden opportunity. Rooming- very pleasant and interested in what I had to say instead of feeling like a box being checked off. Dr. Armstrong- when they talk about being a team with your healthcare provider, this is what they mean. He let me lead the visit and addressed all my concerns with courtesy, even the ones that weren't rational to myself. Check out- very friendly and didn't feel like she was just trying to get me out the door. I sent a mychart message after my visit and it was addressed very promptly. This office has the patient experience on lock.
All went well. I appreciated their pushing me in the wheel chair.
Prompt, pleasant, clear, communication, questions
It was a surprisingly pleasant visit. So much so that I gave my brother a review and encouraged him to establish with Dr Armstrong. (His doctor is leaving. )
Everyone in Dr. Armstrong's office was very professional and courteous. I have zero complaints and was just happy to have a new primary physician that was very attentive to my health needs.
Dr. Armstrong explained everything to me, gave me options, the whole works. He was totally awesome. I got a lot of info out of him and he was definitely on top of it. So I really do appreciate him and I think he is a wonderful doctor and the staff was just as present and sweet and I love him. Thank you.
Dr. Armstrong always listens to my problems and he always does the best he can to solve them. He is an excellent doctor and his staff is also top notch.
Love the staff! Love Dr. Armstrong!
All was perfect. Change nothing.
All went very well during this appointment!
Dr. Armstrong listened to my concerns very nicely. I like him.
Dr Armstrong is very attentive to my needs and explains things thoroughly. Very prompt at sending in my prescriptions. He is friendly and his demeanor makes me feel comfortable.
I really appreciate getting in to see the doctor in a timely manner. I didn't have much wait time once I arrived for my appointment.
Withdrew provider they need more input into each case it takes more time to learn the history an do not think they have that kind of time to give.
Great first visit! I'm going to like him and his staff. They were all professional and kind. Highly recommend this physician.
I'm talking now. Yeah, I thought he was a great guy. I really liked him. He was a nice doctor. That's all I can tell you. Thank you.
I found each member of the staff, as well as the doctor, very kind, attentive and knowledgeable. The atmosphere of the office was clean, comfortable and comforting. Since going to the doctor is not something that most of us look forward to, all of the above certainly make it as pleasant as it might possibly be.
I have recommended Dr. Armstrong to many friends. Several of my friends are now patients. Dr. Armstrong listens, explains things clearly, and I am glad he is our doctor.
Dr. Armstrong is excellent and listens to everything you tell him and responds appropriately. Very on top of things
The staff at Dr. Armstrong's office is always friendly, professional and caring. I have always been treated with respect and care. I have always recommended him when a friend or colleague inquires about doctors they would recommend in our area. Never had any negative experiences with Dr. Armstrong or his staff.
I have already recommended Dr. Armstrong to several folks looking for a new doctor. He ROCKS!!!!
Doing good! Showing improvement!
Phelps Health Provider, along with staff is the best. The Lab staff is the best also.
Nice courteous visit
Everything was done well.
Everything went well
No need for improvement. I was very satisfied with staff and treatment.
I was very happy with my visit. I have always been very happy with Phelps Health thank you very much!!
I thought he was great no problems or worries
All of staff treated me with respect and were very friendly. Dr Armstrong answered my questions and explained everything. It was only my second visit and I was very impressed with the staff and Dr Armstrong.
Everyone listened to my concerns. I felt well cared for.
Keep up the good work. I like Dr Armstrong and his staff.
I had no issues at all. Everyone was friendly, courteous and helpful
Everything
A very friendly and positive group!
Polite, professional service. Pleased with the technical knowledge and prompt treatment, along with followup efforts
Dr Armstrong is so careful to listen and discern. We look forward to being patients in the future.
Reasonable amount of wait time.
I got the text to remind me of my appointment and I would like to have what parking lot to look for in the text. I got a little confused and a little panicky walking around in the cold. That's all. But otherwise my experience was excellent. I'm really looking forward to working with Dr. Armstrong in the future on my health. And y'all are great.
Dr. Armstrong was wonderful. I liked him very much. I know his staff, and they have always been great- pleasant, polite, and personable. I would love to continue care with Dr. Armstrong and his staff, but I' afraid I may not be able to. Phelps Health may be too cost prohibitive. We'll see when I get the final bill...
I felt rushed during the time with provider.
Thank you for your care and please keep up the good work.
Very quick appointment with no waiting once I arrived.
Great group of people! I enjoyed talking to them and even sharing a few pictures of my Christman Village.
Dr. Armstrong takes the time to listen to my concerns and gives me valuable information concerning my health conditions. His staff always has a positive upbeat attitude and makes it a nice visit.
Love Dr Armstrong and staff always caring
Very professional and personable in all aspects. Thank y'all at Phelps Health. I do appreciate you all.
It was refreshing to be heard as I go through a rare health issue. Thank you.
Pleasant staff. Dr was attentive and knowledgeable. It was a pleasant experience.
The upmost courteous visit and very pleased with all!
I'll tell you what, I'm from Michigan and I am very impressed with your staff, with your doctors and with everyone associated with this hospital. To be called by my name when I just walk in, I don't have to look it up, that's impressive to me. And I really appreciate and I respect these people. I don't know what else to say, but thank you very much.
Receptionist, nurse, and Doctor Armstrong were great!
I was greeted promptly upon entering the office. Everyone was very professional and courteous . Dr Armstrong listened and made me feel very comfortable discussing all issues. Highly recommend.
I was impressed with the professionalism and courtesy of everyone I had contact with. I especially liked Dr Armstrong's manner. He was very attentive and listened well during our conversation. He never made me feel rushed.
Dr. Armstrong, his nurse, and even the front desk staff were very kind and caring. So glad we found Dr. Armstrong!
The staff did well. Mostly the doctor did okay. He could improve on listening to the patient
The wait time to see my doctor was minimal. Everyone in the office was helpful and polite.
Everyone was real professional and courteous.
Doctor Armstrong was the only Doctor that listened what I said and was able to give me medicine that helps my pain.Thank you very much.Also front desk was super nice.Thanks again. You guys are wonderful
Was first visit with provider and he spent time asking questions and listening to my answers. I was very impressed with Dr Armstrong. All of the office staff and nurses were very good and caring.
I've been to this physical therapy before for my knee replacement and I would highly recommend this place. I did to my neighbor after his knee replacement. Great place and therapists.
It was an excellent experience.
Our first consultation and medication review since Dr Bass retired. We feel fortunate to have been accepted as patients of Dr Armstrong and are confident he will take good care of us.
Quick check in, short wait. No problems at all.
Everyone did well and had a smile
Dr. Armstrong and his staff are our new general practitioner team. Our doctor of over 40 years retired and Dr. Armstrong welcomed us under his care with open arms. We're so happy we chose him!
Professional, timely, pleasant
I cannot say enough good things about Dr. Armstrong. He is awesome. Great people skills. Sensitive and caring. Has addressed a complex issue that l am having in a excellent fashion. His treatment has improved my condition. Phelps Health has an excellent physician in Dr. Armstrong. Please do not let him get away! He's a keeper!
DR. Armstrong and his staff are very polite and personal as soon as you walk in the door. Dr. Armstrong was very highly recommended and after my visit, I can see why he is a great guy and shows high levels of caring for his patients. His staff is extremely personable and caring and listens to everything you have to say.
