
Highlights
Age Groups Seen
- Infant 0-2
- Child 3-12
- Adolescent 13-17
- Young Adult 18-25
- Adult 26-64
- Older Adult 65+
Languages
- English
In-Network Plans
View All Accepted Plans (11)Gender
FemaleJohns Hopkins Affiliations:
- Johns Hopkins Community Physicians
About Jennifer Cox Janus
Johns Hopkins Physician
Background
Jennifer Janus, M.D., is an internal medicine-pediatrics physician with Johns Hopkins Community Physicians. After earning her bachelor’s degree, with a major in biology and minor in psychology, from Johns Hopkins University in 1994, she attended medical school at the University of Maryland, graduating in 2002. She went on to complete her residency in internal medicine-pediatrics at the University of Michigan in 2006.
Dr. Janus is also a clinical instructor with Johns Hopkins Community Physicians. She enjoys teaching and has precepted pre-medical, medical and nurse practitioner students. Prior to joining Johns Hopkins, she was an assistant professor at West Virginia University Medical System-East. While in medical school, she taught board review courses and tutored first year students. During her residency, she helped create an “Intern Boot Camp” to educate first year residents on common inpatient issues. When she joined the Johns Hopkins team, Dr. Janus created an educational series to help train medical assistants at her Hagerstown practice. She has also provided lectures to the community on topics including Lyme disease and Substance Use Disorder.
Dr. Janus provides primary care to patients of all ages and is particularly interested in mental health and substance use disorders.
Contact for Research Inquiries
12916 Conamar Drive
Suite 204
Hagerstown, MD 21742
Honors
- AMA Physician's Recognition Award, American Medical Association
- Howard Silver Award for Outstanding Community Service, University of Maryland Family Practice Department
- Johns Hopkins Student Excellence Award for Leadership and Service, Johns Hopkins University
- Academy of Clinical Excellence, Johns Hopkins Community Physicians, 12/25/17
Memberships
- American Academy of Pediatrics
- American College of Physicians
Locations
- Johns Hopkins Community Physicians - Hagerstown
- 12916 Conamar Drive, Suite 204, Hagerstown, MD 21742
- Get Directions
- phone: 301-791-0600
- fax: 410-367-2023
Expertise
Education
- Residency: University of Michigan Medicine, Medicine and Pediatrics, 2006
- Graduate School: University of Maryland School of Medicine, MD, 2002
Board Certifications
- Internal Medicine: American Board of Internal Medicine, 2007
- Pediatrics: American Board of Pediatrics, 2006
Insurance
- Aetna
- CareFirst
- Cigna
- First Health
- Geisinger Health Plan
- HealthSmart/Accel
- Johns Hopkins Health Plans
- MultiPlan
- Pennsylvania's Preferred Health Networks (PPHN)
- Point Comfort Underwriters
- Private Healthcare Systems (PHCS)
Ratings & Reviews
4.9 out of 5
362 ratings, 148 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 3/19/2026
Dr Janus is always very nice and listens to my concerns. She explains the reasoning for treatment and why she chose that. I never feel rushed or like a burden when seeking treatment. She is truly the best care I've received.
- 5 out of 5 starsReviewed on 3/18/2026
I've been with Dr Janus for 14 years and won't change. She's the best physician I've had in years.
- 5 out of 5 starsReviewed on 3/16/2026
Friendly
- 5 out of 5 starsReviewed on 3/16/2026
Very professional, very courteous
- 5 out of 5 starsReviewed on 3/11/2026
She was patient thorough and knowledgeable. I was very pleased.
- 5 out of 5 starsReviewed on 3/10/2026
Love dr Janus. She cares and tries to help me.
- 5 out of 5 starsReviewed on 3/4/2026
Excellent provider
- 5 out of 5 starsReviewed on 3/4/2026
Dr. Janus has been my PC for years and I feel well taken care of.
- 5 out of 5 starsReviewed on 3/4/2026
Dr Janus is easy to talk to, knows my medical history, and is proactive to suggest remedies.
- 5 out of 5 starsReviewed on 3/4/2026
Dr.Janus always explains things too me regarding to my appointment that day.Very good Doctor.
- 5 out of 5 starsReviewed on 3/3/2026
Dr Janus is always very kind and helpful.
- 5 out of 5 starsReviewed on 3/3/2026
Excellent, knowledgeable, listens intently!
- 5 out of 5 starsReviewed on 3/3/2026
Dr. Janus is top notch.
- 5 out of 5 starsReviewed on 2/27/2026
I've been seeing Dr Janus for at least 20 years and I think she's just a great
- 5 out of 5 starsReviewed on 2/27/2026
Excellent provider. Time spent was excellent and dialogue regarding my concern was wonderful. I never felt rushed nor felt that I was a number. I felt like I was important to her!
- 5 out of 5 starsReviewed on 2/17/2026
Great Doctor been a patient for over a decade. Thankful she takes the time to explain and be thoughtful.
- 5 out of 5 starsReviewed on 2/16/2026
DR. Janus is an Excellent Doctor who knows her patients & their health.
- 5 out of 5 starsReviewed on 2/4/2026
Dr Janus Is kind and understanding. I appreciate her.
- 5 out of 5 starsReviewed on 2/3/2026
Always get the very best care, concern and respect at thus practice.
- 5 out of 5 starsReviewed on 2/3/2026
[staff] and Jennifer Cox
- 5 out of 5 starsReviewed on 1/30/2026
Has lots of knowledge.
- 5 out of 5 starsReviewed on 1/30/2026
Excellent
- 5 out of 5 starsReviewed on 1/30/2026
Dr Janus is the best doctor I have ever had. She is thorough, she listens and I always feel like I received the care I needed. I would recommend her to anyone. I have been with Dr. Janus for 10 years now and would not consider going anywhere else. She is a rare gem in the medical world today.
- 5 out of 5 starsReviewed on 1/30/2026
The best! Kind, caring, thorough, a great listener and a wonderful person
- 5 out of 5 starsReviewed on 1/29/2026
Overall excerllant
- 5 out of 5 starsReviewed on 1/29/2026
Very good listener when discussing personal issues
- 5 out of 5 starsReviewed on 1/29/2026
Do hope she does not leave John Hopkins. I very happy with her as my Dr
- 5 out of 5 starsReviewed on 1/28/2026
Dr. Janus is patient and very personable
- 5 out of 5 starsReviewed on 1/23/2026
Very happy and satisfied with Dr Janus.
- 5 out of 5 starsReviewed on 1/23/2026
Dr. Janus is the best doctor I've ever had.
- 5 out of 5 starsReviewed on 1/23/2026
Dr Janus is an amazing provider. She always listens to me and works with me to decide the best care for my wellbeing.
- 5 out of 5 starsReviewed on 1/21/2026
Very compassionate and understanding!
- 5 out of 5 starsReviewed on 1/14/2026
Care excellent.
- 5 out of 5 starsReviewed on 1/12/2026
I always enjoy visiting my provider. Everyone is always so friendly and supportive.
- 5 out of 5 starsReviewed on 1/9/2026
First time I met Dr Janus. Got an appointment because I had lingering cough. She determined I didn't need a chest x-ray
- 5 out of 5 starsReviewed on 1/7/2026
Johns Hopkins Medicine in Hagerstown and Baltimore have been excellent
- 5 out of 5 starsReviewed on 1/5/2026
Dr. Jennifer Janus is simply the best provider for me. I am comfortable talking with her about anything, and I trust her judgment completely.
- 5 out of 5 starsReviewed on 1/2/2026
Truly amazing and very caring.
- 5 out of 5 starsReviewed on 1/2/2026
The best of the best.
- 5 out of 5 starsReviewed on 1/2/2026
Truly amazing. Very caring.
- 5 out of 5 starsReviewed on 12/31/2025
Dr Janus is always wonderful!
- 5 out of 5 starsReviewed on 12/31/2025
She's always very helpful and spends as much time as I need with me.
- 5 out of 5 starsReviewed on 12/31/2025
Love this practice, and Dr. Janus is super!
- 5 out of 5 starsReviewed on 12/30/2025
Love Dr. Janus
- 5 out of 5 starsReviewed on 12/29/2025
Dr. Jennifer Janus Is extremely knowledgeable and professional in every way. I would recommend her to anyone that I know. She takes a time to explain and make sure that I understand all situations. I feel incredibly Lucky to have found her as a physician. Her excellence is exactly what I needed. Jonh Hopkins is lucky to have her in their team of doctors. I thank you for that!
- 5 out of 5 starsReviewed on 12/29/2025
Dr. JANUS is experienced, professional, and listens to everything I have to say. I would recommend Dr. JANUS to anyone looking for an excellent PCP.
- 5 out of 5 starsReviewed on 12/29/2025
Thorough and concerned about my condition. She sent me to the ER for further care. Working through my Issue at this pointHoping to get It resolved soon
- 5 out of 5 starsReviewed on 12/19/2025
Good provider Dr. Janus is Great
- 5 out of 5 starsReviewed on 12/16/2025
I always receive the best care from Dr. Janus And other providers of Johns Hopkins
- 5 out of 5 starsReviewed on 12/16/2025
I think that my provider Dr. Janus, is a very thorough and thoughtful physician and I feel lucky to have her as my doctor
- 5 out of 5 starsReviewed on 12/11/2025
Dr Janus has always taken very good care of me. She stays on top of my meds, any testing, general health and my mental health. She goes over my blood work with me too. I understand how she can run behind at times because she cares so much about her patients and sometimes they need a little more time. I know that if she is late it's for a good reason and if I needed more time she would give it to me. You're not just a number to her.
- 5 out of 5 starsReviewed on 12/9/2025
I have been seeing Dr. Janus for a long time. I have become very comfortable with her, and have enormous confidence in her. [staff], and Dr. Janus have worked extremely well taking care of my needs.
- 5 out of 5 starsReviewed on 12/8/2025
Long term consistency
- 5 out of 5 starsReviewed on 12/5/2025
Dr. Janus is an excellent provider and always has my best interest in mind. I have been seeing her for many years. She is the main reason I come to this practice.
- 5 out of 5 starsReviewed on 12/3/2025
Dr Janus was very kind to me.
- 5 out of 5 starsReviewed on 12/3/2025
Dr. Janus has become more compassionate over the past few years.
- 5 out of 5 starsReviewed on 12/3/2025
In a word, excellent! By far, the best primary care physician I have ever had.
- 5 out of 5 starsReviewed on 12/3/2025
Dr. Janus is amazing as a primary care provider. I am an extremely complicated patient with multiple specialists and she is excellent at coordinating care. She is respectful, responsive, thorough, and listens genuinely to my needs. JHH is very lucky to have her.
- 5 out of 5 starsReviewed on 12/3/2025
Dr. Was well informed about my case, very considerate, attentive, and caring. I really liked her, left feeling confidant about exam and what she said and recommended.
- 5 out of 5 starsReviewed on 12/2/2025
A strong feeling of professionalism which I value as a major trust factor
- 5 out of 5 starsReviewed on 12/1/2025
Dr. Janus
- 5 out of 5 starsReviewed on 11/25/2025
I thought Jennifer was very professional and answered all my questions. I thought it was a good visit
- 5 out of 5 starsReviewed on 11/24/2025
Dr.Janus is always informative by explaining disease process. Clarifying why different healthcare, medication, life style activities are important for a longer healthier life
- 5 out of 5 starsReviewed on 11/19/2025
Dr. Janus is one of the finest physicians that I've been fortunate to have care for me.
- 5 out of 5 starsReviewed on 11/17/2025
Dr Janus is an excellent physician.
- 5 out of 5 starsReviewed on 11/17/2025
Dr. Janus is a wonderful provider and takes care of all my needs. She takes time to listen and give me positive solutions.
- 5 out of 5 starsReviewed on 11/17/2025
Love Dr. Janus!!
- 5 out of 5 starsReviewed on 11/12/2025
Quite Intelligent, and great communication skills.
- 5 out of 5 starsReviewed on 11/6/2025
Dr Janus thorough and responds to my questions. I feel my health is in good hands
- 5 out of 5 starsReviewed on 10/29/2025
Very thorough
- 5 out of 5 starsReviewed on 10/29/2025
Dr Jennifer janus is the best dr I've ever had
- 5 out of 5 starsReviewed on 10/28/2025
Dr. Janus takes her time and listens I like and trust her very much.
- 5 out of 5 starsReviewed on 10/23/2025
Very friendly and easy to talk to!
- 5 out of 5 starsReviewed on 10/21/2025
Dr Janus is tops. She often runs late but I have no problem with that as she takes the time you need to answer my questions.
- 5 out of 5 starsReviewed on 10/21/2025
Very professional and knowledgeable! I have a great visit every time I meet with Dr. Janus!
- 5 out of 5 starsReviewed on 10/7/2025
Dr. Janus is both professional and cordial. I am very comfortable talking with her about anything. She always listens and does not rush, which is what I especially appreciate. She is the perfect doctor for me.
- 5 out of 5 starsReviewed on 10/7/2025
Excellent care is always provided.
- 5 out of 5 starsReviewed on 10/6/2025
She is very knowledgeable and caring.
- 5 out of 5 starsReviewed on 10/3/2025
Dr. Janus asked me about certain blood tests from my urologist.
- 5 out of 5 starsReviewed on 9/30/2025
No complaints
- 5 out of 5 starsReviewed on 9/30/2025
Dr Janus is fantastic!
- 5 out of 5 starsReviewed on 9/26/2025
Dr. Janus is very knowledgeable and thorough in her discussions w/ patients. She spends whatever time it takes to explain and answer questions. The lab work that she orders before the visit, her explanation of results is very helpful.
- 5 out of 5 starsReviewed on 9/25/2025
Dr Janus, as always, took her time with me, carefully listening to what my concerns were. I never feel rushed when I see her. She always explains the rationale behind any tests she orders or referrals she suggests. I feel very blessed to have her as y primary care provider.
- 5 out of 5 starsReviewed on 9/23/2025
Good visit
- 5 out of 5 starsReviewed on 9/22/2025
As always Dr Janus is the ultimate professional knowledgeable about all my health problems and proactive in caring for me. I feel truly blessed to have her as my primary Dr.
- 5 out of 5 starsReviewed on 9/19/2025
She is very good ask all the appropriate questions and provides excellent care for me
- 5 out of 5 starsReviewed on 9/19/2025
Prover listens to her patients with respect
- 5 out of 5 starsReviewed on 9/18/2025
I love Dr Janus she's very knowledgeable very courteous she's just a really sweet person she's always ready to listen and help me with any medical decisions that I need to make
- 5 out of 5 starsReviewed on 9/17/2025
Dr. Janus was extremely helpful and positive in meeting the goals of our visit. She was extremely knowledgeable about the issues we discussed. The nurse who spoke to us prior to the online visit was a bit surly, but, except for a delay in Dr. Janus' arrival, all was good.
- 5 out of 5 starsReviewed on 9/15/2025
Professional, courteous easy to talk to
- 5 out of 5 starsReviewed on 9/10/2025
Excellent.
- 5 out of 5 starsReviewed on 9/8/2025
Dr. Janus is a very fine and helpful doctor.
- 5 out of 5 starsReviewed on 9/8/2025
Dr. Janus is a gifted physician
- 5 out of 5 starsReviewed on 9/4/2025
It was a good appt. I got to talk about my concerns and goals.
- 5 out of 5 starsReviewed on 9/3/2025
Dr. Janus is one of the most caring and knowledgeable physicians I have ever had the opportunity to see. First class!
- 5 out of 5 starsReviewed on 8/25/2025
Dr Janus is very thorough and did a great job with the reason I needed an emergent visit. She ordered anX-ray and followedUp with me on the results and also got me in with the ortho quickly.
- 5 out of 5 starsReviewed on 8/22/2025
There answers when I need herSatisfied
- 5 out of 5 starsReviewed on 8/22/2025
Everyone in that office is very professional and kind. They make you feel comfortable. Spend plenty of time with me and answer all my questions. I always feel that I have the best caring Doctor and would never want to change. She comes in and does a very professional job without being stuffy.
- 5 out of 5 starsReviewed on 8/20/2025
Dr. Janus is a very caring physician and we appreciate the care that she gives Joy. She is professional and very thorough.
- 5 out of 5 starsReviewed on 8/18/2025
I am happy with my doctor and her team.
- 5 out of 5 starsReviewed on 8/12/2025
Excellent Listens to my concerns explains things
- 5 out of 5 starsReviewed on 8/1/2025
Dr. Janus is awesome!
- 3 out of 5 starsReviewed on 7/30/2025
40 minutes late is unacceptable
- 5 out of 5 starsReviewed on 7/29/2025
Still happy after all these years
- 5 out of 5 starsReviewed on 7/29/2025
We love her! The best primary care physician we've had. Kind, caring and very thorough
- 5 out of 5 starsReviewed on 7/25/2025
Very thorough and professional. She is the best!
- 5 out of 5 starsReviewed on 7/25/2025
Dr Janus was thorough and helpful, even though circumstances and other providers made it difficult for her to be of help in the end, and I ended up having to go to the ER for treatment.
- 1 out of 5 starsReviewed on 7/24/2025
I had to leave the office, Doctor Janus was running late , I had another appointment toKeep. So I left and rescheduled
- 5 out of 5 starsReviewed on 7/22/2025
Excellent care.
- 5 out of 5 starsReviewed on 7/22/2025
Best I've ever had!
- 5 out of 5 starsReviewed on 7/21/2025
Dr. Janus spends quality time and thoroughly explains everything. I truly appreciate the time she spends with w.
- 5 out of 5 starsReviewed on 7/16/2025
She is great and caring. Takes interest in my care. Contacts my other providers regarding my situation.
- 5 out of 5 starsReviewed on 7/15/2025
Dr. Janus has always been kind, considerate and caring. She has provided medical information In a way that I understand clearly everytime I visit. She always includes my input and answers questions. I have had several doctors in my 65 years. She is clearly the best!
- 5 out of 5 starsReviewed on 7/14/2025
She was well versed in my history and was very helpful in guiding me in treatment options for my knee.
- 5 out of 5 starsReviewed on 7/2/2025
Dr Janus has been my provider for many years. I can count on her to encourage me to make my health my top priority. Several years ago, Dr Janus was the only Dr who solved a health challenge I was facing (hyperthyroid, Grave's). She's very thorough and remembers life events I'm experiencing. With her help I was able to take care of myself while I was taking care of my husband during his last months with aggressive prostate cancer. It's a great feeling knowing that I have such an amazing Dr walking my health journey with me.
- 5 out of 5 starsReviewed on 6/27/2025
Excellent care. Takes time to listen.
- 5 out of 5 starsReviewed on 6/24/2025
Dr. Janus was most respectful in every way, asking and answering questions to have a clear understanding of my concerns, health problem I strongly felt she devoted her time to my worries. I could not have had better care.
- 5 out of 5 starsReviewed on 6/23/2025
Dr. Janus really listened to my concern, provided positive reinforcement for my efforts and offered several options to reach my goal. She asked me to follow-up in a few weeks to check progress.
- 5 out of 5 starsReviewed on 6/23/2025
Dr Janus is an excellent physician. Very caring, concise and knowledgeable.
- 5 out of 5 starsReviewed on 6/16/2025
Excellent
- 5 out of 5 starsReviewed on 6/12/2025
Dr. Janus is an excellent doctor who knows about my health from studying the records and also I've been with her for a number of years. She always works with me and encourages me to also take care of myself as I should. She really encouraged me, during this visit, to stick to good diet and exercise routines so I can lose the weight that I had gained. Very motivating!
- 5 out of 5 starsReviewed on 6/10/2025
Dr. Janus is the best PCP I have ever had.
- 5 out of 5 starsReviewed on 6/10/2025
Dr Janus listens closely and genuinely cares about my overall health.
- 5 out of 5 starsReviewed on 6/6/2025
Dr Janus is the best doctor of any kind I have ever had. She is attentive but efficient. She doesn't linger on unimportant things and is direct, honest and comprehensive in discussing issues with me.
- 5 out of 5 starsReviewed on 6/6/2025
Jennifer Janus, MD
- 5 out of 5 starsReviewed on 6/6/2025
I felt that Dr Janus listened to my concerns and responded with thoughts ideas
- 5 out of 5 starsReviewed on 6/5/2025
Dr. Jennifer Janus is professional, personable, and extremely knowledgeable. I feel comfortable with her, and trust her judgment.
- 5 out of 5 starsReviewed on 6/4/2025
Dr JANUS IS A VERY CARING PROVIDER
- 5 out of 5 starsReviewed on 6/3/2025
She is very knowledgeable and readily offers choices for my care.
- 5 out of 5 starsReviewed on 6/3/2025
I trust Dr Janus as my general doctor.
- 5 out of 5 starsReviewed on 6/3/2025
Dr. Janus has ordered medications for sleep and high blood pressure and I take them as prescribed.
- 5 out of 5 starsReviewed on 5/19/2025
Good visit
- 5 out of 5 starsReviewed on 5/13/2025
My provider is always familiar with my chart. We are always on the same wave length when it comes to my health care. She's the best!
- 5 out of 5 starsReviewed on 5/12/2025
Excellent doctor
- 5 out of 5 starsReviewed on 5/9/2025
Dr. Janus is an excellent doctor and I feel She does her very best every time I'm in her office
- 5 out of 5 starsReviewed on 5/9/2025
She is VERY good & cares about her patients.
- 5 out of 5 starsReviewed on 5/6/2025
Dr Janus is hands down the best Dr I've ever had. She listens, she confirms she understands & she works us towards solutions
- 5 out of 5 starsReviewed on 5/6/2025
Dr Janus is always attentive and thorough. Well respected
- 5 out of 5 starsReviewed on 4/30/2025
Always a good experience
- 5 out of 5 starsReviewed on 4/29/2025
Dr. Janus is a wonderful Dr. She is always professional, and extremely supportive and compassionate.
- 5 out of 5 starsReviewed on 4/28/2025
Very well satisfied with my appointment.
- 5 out of 5 starsReviewed on 4/25/2025
Dr. Janus is wonderful. She is kind and patient and willing to discuss and answer any questions I may have.
- 5 out of 5 starsReviewed on 4/25/2025
Great doctor!
- 5 out of 5 starsReviewed on 4/21/2025
I feel that I receive the upmost respect and medical care.
- 5 out of 5 starsReviewed on 4/21/2025
Dr. Janus is top shelf, very knowledgeable, easy to understand.
- 5 out of 5 starsReviewed on 4/17/2025
Very friendly and helpful!!
- 5 out of 5 starsReviewed on 4/17/2025
Great appointment and so grateful for Dr Janus help
- 5 out of 5 starsReviewed on 4/16/2025
They're all very nice and they know the right questions and they're all got a good attitude