
Justin Hahn, DO
Internal Medicine
Highlights
Johns Hopkins Affiliations:
- Johns Hopkins Community Physicians
About Justin Hahn
Background
Justin Hahn, D.O., is an internal medicine physician with Johns Hopkins Community Physicians. Dr. Hahn received his undergraduate degree from University of Maryland, College Park. He then went on to receive his medical degree from Nova Southeastern University College of Osteopathic Medicine in Fort Lauderdale, Florida. Shortly after, Dr. Hahn moved back north where he completed his internal medicine residency training at Cooper University Hospital in Camden, New Jersey.
Dr. Hahn is a Howard County native and grew up in Ellicott City. In his free time, he enjoys trying different restaurants, traveling, basketball and golf.
Locations
- Johns Hopkins Community Physicians - Rockville
- 14955 Shady Grove Road, Suite 100, Rockville, MD 20850
- phone: 301-990-3190
- fax: 410-367-2021
Expertise
Education
Cooper University Hospital
Residency, Internal Medicine, 2023Nova Southeastern College of Osteopathic Medicine
Medical Education, DO, 2020Board Certifications
Internal Medicine
American Board of Internal Medicine, 2023Insurance
- Aetna
- CareFirst
- Cigna
- First Health
- Geisinger Health Plan
- HealthSmart/Accel
- Humana
- Johns Hopkins Health Plans
- MultiPlan
- Pennsylvania's Preferred Health Networks (PPHN)
- Point Comfort Underwriters
- Private Healthcare Systems (PHCS)
- UnitedHealthcare
Ratings & Reviews
4.9 out of 5
330 ratings, 113 reviewsThe Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.
- 5 out of 5 starsReviewed on 2/25/2025
Great
- 5 out of 5 starsReviewed on 2/18/2025
Great experience
- 5 out of 5 starsReviewed on 2/14/2025
Overalls he is one of the best providers I had
- 5 out of 5 starsReviewed on 2/14/2025
Dr Hahn is very friendly, professional, and kind. He takes the time to explain things and gives me the time to ask questions. I'm pleased that our visits are discussions about my health, things to be looking forward to in the future, the reasons for various tests. I also value that he accepts the fact that I have some opinions on issues/recommendations, and he is willing to continue the conversation. He is always very prompt in updating me on test results, which I also appreciate.
- 5 out of 5 starsReviewed on 2/12/2025
Good listener and promptly addressed my concerns.
- 5 out of 5 starsReviewed on 2/10/2025
Dr Hahn is an excellent PCP.
- 5 out of 5 starsReviewed on 2/7/2025
Dr Hahn is an outstanding physician and is on top of any health issues I may have. He is communicative, informative and caring.
- 5 out of 5 starsReviewed on 2/7/2025
Great
- 5 out of 5 starsReviewed on 2/4/2025
I saw Dr. Justin Hahn because [staff] was not available and I needed a pre-op appointment for my cataract. He was very comforting to me . I had an excellent contact with him.
- 5 out of 5 starsReviewed on 2/4/2025
The communication was two way with Doctor Hahn , he fully understood my worries and had information about my health.
- 5 out of 5 starsReviewed on 2/4/2025
Dr Hahn is first rate
- 5 out of 5 starsReviewed on 2/3/2025
Justin is knowledgeable and pleasant
- 5 out of 5 starsReviewed on 1/28/2025
Impressed with Dr.Hahn. He is a fine person, excellent physician.
- 5 out of 5 starsReviewed on 1/28/2025
This was the first appointment searching for a new doctor after relocating to the area. Luckily, Dr. Hahn will be my new doctor
- 5 out of 5 starsReviewed on 1/28/2025
I am a new patient and was very impressed with Dr. Hahn's knowledge , his thorough review of my records prior to my visit and the time he took with me to answer my questions. I was very happy that the needed blood work could be done on site and that I was able to schedule a needed follow-up appointment at check out.
- 5 out of 5 starsReviewed on 1/28/2025
Made good decisions on medications I need to take
- 5 out of 5 starsReviewed on 1/27/2025
Excellent person.
- 5 out of 5 starsReviewed on 1/22/2025
Dr. Hahn provided excellent service listening to and answering my questions and providing recommendations when needed. Additionally, he ordered a new prescription to take care of one of my new health concerns. I am very happy that he is my primary care health provider.
- 5 out of 5 starsReviewed on 1/22/2025
Justin Hahn is a very capable professional who has my trust and helps me confront my health concerns with confidence.
- 5 out of 5 starsReviewed on 1/22/2025
I had a wonderful experience with Dr. Hahn. He patiently listened to all my concerns/questions, took his time answering my questions, and explained everything clearly. He also promptly followed up on my test results. His exceptional bedside manner truly made me feel cared for. I highly recommend him.
- 5 out of 5 starsReviewed on 1/21/2025
My visit was specifically for ear ache. I was treated on site, provided info for OTC aids and given referral to ENT, I did not call the office. Very good care from Dr Hahn and the attending nurse who flushed my ear.
- 5 out of 5 starsReviewed on 1/15/2025
Impressed with Dr. Hahn's review and knowledge of my medical history in preparation for meeting with me. Good conversations and exchanges.
- 5 out of 5 starsReviewed on 1/13/2025
I was pleased to have switched over to Dr. Hahn. He was very informative and explained everything before him from my past records and what he needed for me to do while I am in his care.
- 5 out of 5 starsReviewed on 1/10/2025
Dr. Hahn was very courteous and provided me with very thorough explanations about my health. He also mapped out all of the treatments and preventative care that I should be following for the next several months.
- 5 out of 5 starsReviewed on 1/8/2025
Very Fortunate to have found Dr. Hahn !
- 5 out of 5 starsReviewed on 1/8/2025
Great listener and communication during appointments. He is empathetic and patient with all my concerns which makes the appointments easy and stress free.
- 5 out of 5 starsReviewed on 1/3/2025
Dr Hahn is great! Glad my wife found him last year after our older primary doc retired.
- 5 out of 5 starsReviewed on 1/3/2025
Dr. Justin Hahn is top of the line kind of a doctor.He listens attentively, offers suggestions.Takes time with his patients. Very happy I was able to get him as my physician.
- 5 out of 5 starsReviewed on 12/31/2024
Dr HAHN IS EXCELLENT.
- 5 out of 5 starsReviewed on 12/31/2024
Very good and helpful and listens and takes time.
- 5 out of 5 starsReviewed on 12/31/2024
The Provider was outstanding, is attentive and is thorough in his check up.
- 5 out of 5 starsReviewed on 12/31/2024
Justin Hahn is outstanding!
- 5 out of 5 starsReviewed on 12/27/2024
Dr. Hahn is a very considerate doctor and I am pleased that he is my primary care physician.
- 5 out of 5 starsReviewed on 12/20/2024
Dr Hahn was very patient, easy to talk to, and willing to listen to all my comments and concerns.
- 5 out of 5 starsReviewed on 12/16/2024
Dr. Hahn is the best. Very kind, friendly, thoughtful, professional and competent.
- 5 out of 5 starsReviewed on 12/11/2024
Everything ran smoothly
- 5 out of 5 starsReviewed on 12/11/2024
My provider is a very empathetic and supportive practitioner. I look forward to my next appointment.
- 5 out of 5 starsReviewed on 12/9/2024
Great, excellent doctor
- 5 out of 5 starsReviewed on 12/2/2024
I always feel that Dr Hahn does a great job of viewing the whole picture of my health and in getting my input/buy-in. Approachable and easy to talk to about concerns.
- 5 out of 5 starsReviewed on 12/2/2024
I was very pleased with my first visit with this provider, very friendly and professional. Thank you so much! :)
- 5 out of 5 starsReviewed on 11/26/2024
Thank you so much for your help and support
- 5 out of 5 starsReviewed on 11/25/2024
I transferred my care to this office from the JHCP office in downtown Bethesda. I was very impressed with the amount of time Dr Hahn spent with me as well as his responsiveness since my visit through the portal. He interpreted my lab results immediately and prescribed new medications right away and got my next visit scheduled already. Very great care.
- 5 out of 5 starsReviewed on 11/20/2024
This was an initial "new patient visit." Dr. Hahn was well informed about my medical history, immediately understand my medical concerns, and focused on the most appropriate plan of care.
- 5 out of 5 starsReviewed on 11/19/2024
Easy to talk to. CompetentNot.complete exam
- 5 out of 5 starsReviewed on 11/18/2024
Dr. Justin is an excellent doctor
- 5 out of 5 starsReviewed on 11/13/2024
This was my first visit, as a new patient, because my previous PCP had left the practice. I was very well impressed and look forward to having Dr. Hahn as my PCP from now on. As a minor matter, I very much appreciated his willingness to schedule my blood test after our visit, so I did not need to have a separate, additional appointment.
- 5 out of 5 starsReviewed on 11/11/2024
Dr. Hahn relayed a tough to hear diagnosis with kindness, empathy, and thoroughness and answered every concerned questions I had with a refined expertise. I feel incredibly fortunate to have him as my doctor to help navigate this new condition and know that It will be treated to the best possible extent.
- 5 out of 5 starsReviewed on 11/11/2024
Due diligence shown toward patient
- 5 out of 5 starsReviewed on 10/23/2024
Dr Hahn is great.
- 5 out of 5 starsReviewed on 10/15/2024
He reminded me about not using nsaids prior to surgery due to the possibility of bleeding. I know that, but had forgotten it. I appreciated the reminder. He also made a number of statements that made me feel less anxious about my upcoming cataract surgery.
- 5 out of 5 starsReviewed on 10/15/2024
He was very attentive and pleasant
- 5 out of 5 starsReviewed on 10/14/2024
Very competent, easy to talk to about issues, understanding.
- 5 out of 5 starsReviewed on 10/11/2024
Excellent
- 5 out of 5 starsReviewed on 10/9/2024
Listening and providing medical advice. I felt at ease talking to dr Hahn. This was my first visit and hopefully will continue receiving care from this provider
- 5 out of 5 starsReviewed on 10/9/2024
Very helpful, knowledgeable and articulate. Showed attention to my questions and concerns.
- 5 out of 5 starsReviewed on 10/2/2024
Dr Hahn is very compassionate and caring
- 5 out of 5 starsReviewed on 10/1/2024
Dr. Hahn is very thorough and I appreciate his desire to ensure I am cared for properly.
- 5 out of 5 starsReviewed on 9/25/2024
Provider was great
- 5 out of 5 starsReviewed on 9/24/2024
First appointment. Listened carefully and comprehended my medical situation to a great degree. Many follow-up questions to statements I made. I believe Dr. Hahn really understood many of the issues which I face. I am very pleased with the attention and suggestions.
- 5 out of 5 starsReviewed on 9/24/2024
Good visit.
- 5 out of 5 starsReviewed on 9/23/2024
Of the many doctors I've had at your practice Dr Hahn is far the best. He doesn't rush me, he listens and addresses my concerns.
- 5 out of 5 starsReviewed on 9/18/2024
Dr Hahn provided outstanding care in a warm and sympathetic manner.
- 5 out of 5 starsReviewed on 9/18/2024
Dr. Hahn was extremely nice, patient, and informative. He gave me much more time than any other doctor has in the area which I greatly appreciate! The nurses took me back as soon as I arrived, and my appointment actually started an hair early, which I loved. I would definitely recommend Dr. Hahn.
- 5 out of 5 starsReviewed on 9/18/2024
Dr. Hahn is very knowledgeable and has an excellent bedside manner. He listens to my concerns and provides attainable solutions.
- 5 out of 5 starsReviewed on 9/18/2024
Dr Hahn is very concerned and listening about my health and very specific to tell me what to do
- 5 out of 5 starsReviewed on 9/16/2024
Dr Hahn is very concerned and knowledgeable.
- 5 out of 5 starsReviewed on 9/11/2024
Thorough, respectful, caring
- 5 out of 5 starsReviewed on 9/10/2024
I'm very satisfied having Dr. Hahn as my PCP. He's taking good care of myself and I'm improving a lot since he's taking care of me.
- 5 out of 5 starsReviewed on 9/9/2024
Dr. Hahn is smart, compassionate, organized, and helpful. He saved my life by insuring that I get proper tests.
- 5 out of 5 starsReviewed on 9/6/2024
Very professional,good bedside manner, active listener and humble
- 5 out of 5 starsReviewed on 9/4/2024
My second visit with Dr. Hahn, and he's been very supportive and helpful. Very caring, kind, courteous and easy to talk. I like that he is very understanding and takes his time with me.
- 5 out of 5 starsReviewed on 9/4/2024
This was my very first visit to this office in Shady Grove with Dr. Hahn. He is very professional In taking care of of his patient. He spent his time in explaining the purpose of my visit and went over the overall plan for my health care. He showed his respect for me and I felt at ease when I am communicating with him.
- 5 out of 5 starsReviewed on 8/19/2024
Excellent consultation, arranged very quickly
- 5 out of 5 starsReviewed on 8/14/2024
Dr Hahn is a very good doctor
- 5 out of 5 starsReviewed on 8/12/2024
Dr Hahn is my new primary care physician. Our meeting at Suburban was our 1st. I found him courteous, friendly and attentive.
- 5 out of 5 starsReviewed on 8/9/2024
Dr Hahn was friendly and professional. I was impressed to see he had reviewed my medical history helping him to make a more accurate assessment of my current medical situation.
- 5 out of 5 starsReviewed on 8/9/2024
My first visit with Dr Hahn. Very courteous and knowledgeable
- 5 out of 5 starsReviewed on 8/5/2024
Routine check-up; physician and nurses were all very professional, attentive, and knowledgeable
- 5 out of 5 starsReviewed on 8/5/2024
Dr. Hahn was very respectful and thorough.
- 4 out of 5 starsReviewed on 8/5/2024
He is an excellent doctor and I really like him
- 5 out of 5 starsReviewed on 7/26/2024
We, my wife & I, have recently moved and this was our first appt with our "provider." He did a good job in absorbing quickly and accurately our medical histories.
- 5 out of 5 starsReviewed on 7/22/2024
Helpful, considerate, efficient, pleasant
- 5 out of 5 starsReviewed on 7/16/2024
Very professional and courteous
- 5 out of 5 starsReviewed on 7/15/2024
The best!!
- 5 out of 5 starsReviewed on 7/12/2024
Dr. Hahn listens well to what his patients want to talk about, and also explains the possible consequences of failing to proceed as he suggests. However, he does so in a very respectful manner. He welcomes patient questions and input.
- 5 out of 5 starsReviewed on 7/10/2024
Very professional, listens to all concerns and tried to provide solutions. Even through language barrier, he was patient and gave us time to understand and interpret without feeling rushed or uncomfortable. Unlike other providers in the past, he seemed to care about the goals and maintaining good health and not just prescribing multiple pills. Great doctor and would recommend to others!
- 5 out of 5 starsReviewed on 7/10/2024
Excellent clinician, listens carefully, remembers details from months ago, explains findings well; I could not ask for a better internist
- 5 out of 5 starsReviewed on 7/8/2024
Dr Hahn listened to me and answered my questions thoughtfully; he had my lab results in hand and was familiar with my chart (a bit surprising since I am new to the practice and this was only my second visit).
- 5 out of 5 starsReviewed on 7/2/2024
It was my first time visiting dr. Hahn. Visit started on time and staffs were professional and courteous. Dr Hahn spent time going over my health and scheduled bloodwork and followed up with results and what I need to do.
- 5 out of 5 starsReviewed on 7/2/2024
Dr, Hahn was very knowledgeable and explain my problem very well .
- 5 out of 5 starsReviewed on 6/28/2024
Dr Justin Hahn was very friendly and professional and clearly explained my next steps for testing and followup.
- 5 out of 5 starsReviewed on 6/24/2024
Dr Hahn is an excellent communicator. Caring and knowledgable.
- 5 out of 5 starsReviewed on 6/19/2024
Dr. Hahn is very knowledgeable and courteous and answered all my questions.
- 5 out of 5 starsReviewed on 6/18/2024
Very thorough, thoughtful and professional. I was satisfied with the advice about how to deal with my concern.
- 5 out of 5 starsReviewed on 6/17/2024
Dr. Hahn was attentive, engaged, and very willing to discuss my meds, medical issues, and concerns. I felt very comfortable in discussing my medical history and current problems. Front office and nurses were pleasant and efficient.
- 5 out of 5 starsReviewed on 6/17/2024
I am happy to be here and will continue
- 5 out of 5 starsReviewed on 6/14/2024
Have their patient for many years always satisfy either care and service
- 5 out of 5 starsReviewed on 6/12/2024
It was an excellent visit. Thank you.
- 5 out of 5 starsReviewed on 6/11/2024
Kind, very Detailed and Professional, Outstanding, I also recommended my wife to Dr Hahn, as her previous primary care doctor just retired recently.
- 5 out of 5 starsReviewed on 5/29/2024
Dr Hahn was very attentive and responsive.
- 5 out of 5 starsReviewed on 5/21/2024
He was wonderful! I was very impressed with his concerns for my condition. He gave me an exam and referral for more studies.
- 5 out of 5 starsReviewed on 5/10/2024
Very kind best ever I met
- 5 out of 5 starsReviewed on 5/8/2024
Dr. Hahn was very professional and helpful.
- 5 out of 5 starsReviewed on 5/8/2024
It was a wonderful experience.
- 5 out of 5 starsReviewed on 5/7/2024
Justin is thorough, listens and asks questions so he can respond appropriately. This gives me confidence in his directions. I feel very comfortable with him and how he assists me with my health.
- 5 out of 5 starsReviewed on 5/6/2024
Satisfied!!
- 5 out of 5 starsReviewed on 5/6/2024
Dr Hamm was fabulous. He took the time to review and discuss treatment options with me.
- 5 out of 5 starsReviewed on 4/29/2024
Dr. Hahn was an excellent physician for my primary care needs. He was professional, respectful, competent and personable. He addressed all of my needs in one visit without making me feel like I am wasting their time. I am very glad I have switched my PCP to him.
- 5 out of 5 starsReviewed on 4/29/2024
Everything was A-OK.
- 5 out of 5 starsReviewed on 4/26/2024
Dr. Hahn was diligent, thoughtful and made reasonable and appropriate suggestions and recommendations. This was my first visit with him as I am switching PCP's.
- 5 out of 5 starsReviewed on 4/26/2024
Very professional
- 5 out of 5 starsReviewed on 4/22/2024
He researched my medical history, seemed to be well informed, seemed concened for my health, and was informative and articulate.
- 5 out of 5 starsReviewed on 4/17/2024
Dr. Hahn was very good at answering my questions and provided a lot of information for me. I'm very pleased!