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
APPOINTMENTS
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. 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
(433
Ratings,
119
comments)
What our patients are saying (Verified reviews from real patients)
Took time to listen and talk to me explaining so I felt comfortable.
Excellent
They were not in a hurry.
Keep up the excellent care
Everything was great, Dr. Armstrong is very professional and answers any questions you have
Everything was fine
Everything worked out great. I told my provider up front that I had stopped taking my blood pressure medicine losartan. And it's not necessarily it's fault but mine because I should have asked about other things to try rather than a statin drug. Other than that hiccup on my part everything was great thank you
Dr Armstrong explains about the medications and treatments and gives advice that I appreciate. Instead of going to a pharmacy to get flu vaccine the doctor asked if I would like to get it at their office. Thank you for being the very best in your specialty.
Dr Armstrong and staff do an excellent job. Dr Armstrong lesson and has solutions and always says call if you need something
Dr Armstrong is one of the best in my opinion. He listens to what I have to say and reacts to my questions with answers I can understand. I have to say that he is top notch. He's the doctor for me. And his staff are each and everyone the very best to be offered. They always have smiles on their faces when I see them. They greet you as if you're a friend and genuinely put me in a mood to want to be there instead of dreading your visit that day. And if they are close by as I depart the office they'll call me by name and wish me a good day. It's comforting to hear that. I can also add that each and every time I've had to call or send a msg thru my chart with a question the staff nurses get a reply back to me very quickly. As they say....(time is important)...mine as well as theirs and they apparently know that with the quick service I always receive. Not enough good things can be said about the entire office of Dr Armstrong. I feel fortunate to have him as my PCM.
Everyone was very nice and knowledgeable. It is a pleasure to come knowing you are going to receive excellent care
I was received ahead of my appointment time
I would not change a thing in Doctor Armstrong's Office. In fact, it should be used as an example for others of how an office should conduct business. Polite,helpful, and caring from start to finish. If you want to improve something, have someone to clean the chairs in the lobby area. The chair arm rails are sticky from all the dirty, oily hands of the people that sit in those chairs waiting for a ride or whatever else they are doing. Talk about spreading sickness! And the carpet in from of the elevators is nasty and needs replacement. It is showing it's age, time to pony up for a new rug. Maybe some money could be pulled from the construction going on by the elevators to at least clean it.
Yes, everyone was very courteous and very nice to me and Dr. Armstrong listened to what I had to say and discussed what I had to say, which I appreciated. So yes, I will be back and I will recommend somebody.
Always patient and compassionate. Quite refreshing, to say the least!
Dr. Armstrong was wonderful and listened carefully to everything I said and his staff was very friendly.
Courteous, friendly, timely ! ?
Excellent experience
Fantastic Doctor
Receptionist seemed to want to visit with a client exiting their appointment. Looked at me a couple of times but did not acknowledge me. Just kept visiting about something other than medical.
Everything Was done well from start to finish.
Dr. Armstrong spends the amount of time you need. Doesn't just rush you through and out the door. He truly listens.
Dr. Armstrong is a professional who is very cooperative. He is always open to the patient's opinion and suggestions. He works from a perspective of integrity, strength and flexibility relative to the patient's concerns... even if he doubts the medical wisdom of those perhaps emotionally based, concerns.
Everything well. No need for improvement.
Everybody was did there job great.
I feel like Dr Armstrong does not reads my History info for the follow up appointments as he is Oblivious to what he's following up. His office notes are inaccurate to what he actually discussed and summary notes states he did specific review of symptoms that he never even looked at.
Always have a good visit with Dr. Armstrongs office and staff. My blood pressure and blood sugar are finally under control and within range. Much better service than my previous provider.
Dr Armstrong is a great doctor. He treats me very well, and listens to what I say. I like him a lot.
Dr. Armstrong and his team are just the best provider team we have ever had in the Rolla area.
Everything went very well!
Dr. Armstrong's reception staff and Dr. Armstrong are just absolutely amazing. And Dr. Armstrong is one of the best doctors I've ever had. I really appreciate how he listens to me as an older woman and how he is absolutely so professional and thorough with everything he does. I highly recommend him and I would do so to any of my friends. Thank you.
I was treated very well and made comfortable. This is a great group of people. I am very happy to be a part of this group. Great Job
Always takes his time to listen to me and answer my questions. If I have a problem he checks into it right away
Ever one was helpful and pleasant. They provided the service I needed. No suggestions for improvement.
I am always treated good
Dr Armstrong is very personable and smart Dr. He listens and is good at explaining so you understand. I appreciatr all he has done for me.
Excellent care
As Always everyone was absolutely wonderful. I truly appreciate Dr Armstrong' s patience.,
Outstanding care
Dr Armstrong listened to my concerns gave advice and is easy to talk to I would definitely recommend my friends this position if they have a choice
I always receive the best care. Dr Armstrong always listens to me.
The doctor and staff LISTENED! I can't iterate that enough. Dr Armstrong and his staff made sure that I felt heard. My husband was with me as well and was having some problems and Elliotte got him scheduled and seen very promptly.
I was seen promptly and treated with respect.
Dr. Armstrong and his staff are always friendly and attentive. They sincerely care and listen as well as asking the right questions.
All very good
Dr. Armstrong is a great doctor who listens and respects the patient.
Great visit. On time, and everything moved very well. Happy from the time I walked in to the time I walked out.
Excellent Doctor, always listens
Great service. Thank you.
Everyone was very courteous, and the whole process went smooth, everyone was professional and knew what they were doing. Great job.
Everything was perfect. Thank you
Amazing doctor.
Excellent doctor!
Staff was great as usual and Dr. Armstrong is always on top of things. Is is the best doctor I ever had always willing to do what ever he can to help, and very attentive to your needs.
Too much and too frequent change in staff! Red flags! The hospital board does not seem to want to allow Dr's to spend adequate time with patients! We're only a number and they want to run us through like cattle. It's no longer care for patients, it's care about the almighty dollar!
All the staff was courteous and informative !!!
Visit went well.
Excellent Dr. and staff
I am always treated good
Very pleased with care I am receiving as Dr Armstrong patient.
They listen to what you say.
This office is always kind and considerate. Listens to my concerns and makes my follow up appointments at my convenience.
Dr Armstrong and his staff are so helpful. His suggestions of action I could take were exactly what I needed to hear. His suggestion about my tremor and further care that I could receive was new information and very helpful. Both of us are focused and I always benefit from time spent focused on ways I can improve my health. Generally Phelps Health is one reason we chose to retire in Rolla. We appreciate the organization overall.
Everyone involved with my visit, was exceptionally helpful and on point.
Doctor Armstrong is very easy to talk to. He does ask questions and he does respond to my questions. I didn't have any major issues. Overall, I am pleased with this visit.
I appreciate the and staff at this office. They are always kind, efficient and professional. The doctor always takes the time necessary to answer questions and to explain issues as necessary.
Answered my questions and I didn't feel rushed.
I feel like the staff and Dr. Armstrong are my friends. Great Crew!
Overall excellent experience.
Every experience was professionally done !! Dr. Armstrong was a joy !!
Got me in on my appointment time
Dr. Armstrong listened carefully and addressed every concern I had. He discussed his plan for my test to find what could be causing my symptoms. He asked if I had any other questions and ensured that I understood the treatment plan.
Excellent caring Doctor
Everyone was pleasant and professional, the Doctor listened and explained so I would understand.
Excellent
Very little wait time waiting to be visited.
Dr. John Armstrong and staff.
Very polite and always take time to explain things
I have referred several people to Dr. Armstrong, but he wasn't accepting new patients.
Was great
Doc helped me with a problem on my leg
Dr. Armstrong and the entire staff were friendly, helpful and respectful.
Everything was good
Dr armstrong listened to my concerns.
They were very friendly and efficient!
You did well. I usually don't recommend physicians to my friends.
I was treated as a unique individual and they seemed to enjoy my humor.
I felt I was in a clinic that works well together and makes a wonderful team. A very pleasant experience.
Just keep up the good work!
I love each and everyone and I really love my dr he is so concerned about my health everyone is so nice I would change anything and I want to say thanks to everybody there
Everyone there is WONDERFUL!! Dr. Armstrong is very knowledgeable but seems a bit calloused. I suspect this will change as he becomes more familiar with the patients he has. Doctor Armstrong and his AMAZING staff are a huge blessing to the Rolla community!
They listen to me and told me if I need anything to call. They gave me so much support for what I am going through.
All staff and my care provider are the best!! In all aspects of care, concern, respect and listening to me and always answering my concerns where I can understand. They are greatly appreciated.
Dr Armstrong always listens to my concerns and makes suggestions and a plan to address them. He promptly responds to messages and informs me of test results .
Very pleased with Dr. Armstrong as my PCP.
Everyone was very helpful and all my questions where answered and explained.
Dr. Armstrong is great! Very caring and takes care of all your needs! His nurse and staff are amazing!
Yeah, the doctor was extremely attentive. I was very impressed with my visit. Thank you.
Very pleasant session
Hard to improve on excellence.
