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
(666
Ratings,
169
comments)
What our patients are saying (Verified reviews from real patients)
I was seen in a timely manner and all of the staff treated me with respect. Dr Armstrong takes his time and answers questions while asking the the right questions. Really impressed that I do not have to wait very long to be seen by the staff and the doctor.
I wouldnt recommend any one because of tge abilty to call you drs office tge answering svc wants to much information i dont feel i should go threw why i am calling twice if i call dr office that is where i am ? ng
I am always treated like I am a very important person.
Timely, pleasant, sought information about my health, offered solutions to my concerns.
Everyone was great
The staff was very kind and professional. Dr. Armstrong listens intently and is always kind and supportive.
Sometimes can't get in to see your primary provider when you need to be seen.
Everyone was kind and courteous and polite, and it was a very pleasant experience
Dr Armstrong and his staff are outstanding. I had a few issues to ask questions about and we had a good focused discussion. The lab is so efficient and the people are so kind. We are very fortunate to have the medical care we have it Phelps Health
Always a great experience with Dr Armstrong-examines you just like good doctors are supposed to. I'm not running around recommending his practice because frankly the more that see him the harder it is-and it's hard enough to get appointments. Staff has always been great there too!
Had a good ? experience my questions were answered and my medical problems were addressed and I feel a lot better
Dr. Armstrong is awesome!
did not care for some of the questions asked on preregister for office visit. Some do not need to be asked.
Nothing changed from prior visit, expected lab work up for A1c etc.
Great Job!
Dr. Armstrong is great because he'll listen to what you have to say and then he replies back and he doesn't leave until he makes sure that he's answered all your questions.
You need to let the doctor spend more time with the patient. You make then rush through too fast.
Appointment went smoothly with no excess wait time!
Ever experience has been great
I was able to get my questions answered and I know that Dr. Armstrong had reviewed all my records prior to my appointment. That made it plain that he cares about his patients and wants to get to the root of all problems. I really appreciated the complete attention and understanding he showed.
The doctor is very kind and explains things well.
Listened well and took time to explain things.
You did good!
Very professional and provided kindness.
The doctor and his staff are the best!
The doctor and staff are wonderful.
You got me in on time. Dr Armstrong listened to me and provided valuable feedback.
Everything everyone was polite, and very courteous facility was clean
Dr. Armstrong seems to be actually interested in what I have to say and doesn't roll his eyes like the other primary care physicians I've had in the past year and a half, two years, so he's the one for me.
Here everybody done me good I appreciate it
I'm very happy with the personal care that I received from Dr. Armstrong. He has an excellent staff. And not everything is always exactly perfect everywhere. But as far as medical care and health care, I've been very happy with Phelps in Rolla. And I've been real happy with Dr. Armstrong.
Everyone was kind and courteous. Dr Armstrong is sending me to right places to take care of medical needs .he listens to the patient and takes a course of action .
I have already referred Dr. Armstrong to others. I also let people know how wonderful the office staff.
Fast appt. Very respectful and I feel comfortable. Thanks a lot. Great experience.
Everyone treated with the most upright respect.
Very professional and caring
Dr. Armstrong has always listened to what I am telling him. He asks me questions but also makes sure that he answers any questions I have. We have discussions and he doesn't rush me.
Very professional from front desk and on!
The experience with doctor Armstrong is good for young doctor he does better then most. Think some thing is going on with your infrastructure losing to many good doctors an not checking up on the request that patients have made though.
The entire visit was outstanding and what I have come to expect and receive from Phelps Health.
I was treated with the most respect from everybody I couldn't ask to be treated any better I really enjoy my visits instead of my dr.adding more medication he is working on getting me off of some my dr. Is so concerned about my health and I really like that thank u Dr.Armstrong and all the office people
The entire team is personable and exceeded my expectations. This was my first time to see Dr. Armstrong. He answered all of my questions and made me feel comfortable throughout the appointment.
He was very professional, listened to me very clearly, and serviced me wonderful. And so did his office staff.
Just keep up the great work! Thank you.
Did very well
I have no complaints , everyone was wonderful!
They always treat me good
Excellent care from Dr. Armstrong
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!!!!
