
Jonathan Caldera Colon, MD
Internal Medicine
Highlights
Age Groups Seen
- Young Adult 18-25
- Adult 26-64
- Older Adult 65+
Languages
- Spanish
- English
In-Network Plans
View All Accepted Plans (11)Gender
MaleJohns Hopkins Affiliations:
- Johns Hopkins Community Physicians
About Jonathan Caldera Colon
Johns Hopkins Physician
Background
Jonathan Caldera Colon, M.D., is an internal medicine physician with Johns Hopkins Community Physicians. Dr. Colon's background is in emergency medicine and the prevention, diagnosis and treatment of HIV. In 2020, during the COVID-19 pandemic, he served with Doctors Without Borders in Puerto Rico. He has received honors for his community service work. In addition to his clinical experience, Dr. Colon spent many years as a teaching assistant.
Outside of his clinical practice, Dr. Colon enjoys boxing, traveling, reading, cooking and spending time outdoors. Dr. Colon’s native language is Spanish and he is fluent in English.
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: Universidad Central del Caribe School of Medicine, Internal Medicine, 2018
- Medical Education: University of Puerto Rico School of Medicine, General Practice, MD, 2013
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
5 out of 5
437 ratings, 154 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 3/23/2026
Dr. Caldera Colon is exceptional in his expertise and patient care.
- 5 out of 5 starsReviewed on 3/20/2026
Best dr ever. Thorough. Follows up.
- 5 out of 5 starsReviewed on 3/20/2026
New Dr for me. I am very pleased with his care.
- 5 out of 5 starsReviewed on 3/17/2026
Liked Dr Caldera
- 5 out of 5 starsReviewed on 3/16/2026
I recently changed general practice provider.I didn't think that they were as doing the best care for me.
- 5 out of 5 starsReviewed on 3/16/2026
Very easy to talk to and spent time to explain my medical questions and blood test results
- 5 out of 5 starsReviewed on 3/13/2026
My husband and I both see Dr Caldera. He is attentive, thorough and takes his time to explain and look at things. He does not make you feel bad for anything. He is supportive and caring.
- 5 out of 5 starsReviewed on 3/13/2026
He was thorough, took time to discuss my health concerns, explained things to where I could understand him, discussed a plan moving forward that we both felt comfortable with. 10 out of 10, I'd easily recommend him to others!
- 5 out of 5 starsReviewed on 3/12/2026
I always been given attention with Dr. Caldera. I always feel important when I have my appointments. He truly listens and explains everything from previous tests. I don't feel hurried. He takes the time to answer my concerns/questions. He is exceptional. It is nice to know there are exceptional doctors. I am so happy to have Dr. Caldera as my physician.
- 5 out of 5 starsReviewed on 3/11/2026
I really like the provider I saw. He has knowledgeable, respectful, and courteous.
- 5 out of 5 starsReviewed on 3/11/2026
Dr. Caldera Colon
- 5 out of 5 starsReviewed on 3/11/2026
Very thorough, professional and courteous
- 5 out of 5 starsReviewed on 3/9/2026
The provider is always attentive and he always repeats my questions back to me before he answers. He also takes the time to go over my test results line by line in a way that I can understand
- 5 out of 5 starsReviewed on 3/4/2026
Dr Caldera is prepared, commutative, answers any questions thoroughly in layman's terms and confirms that all concerns are covered
- 5 out of 5 starsReviewed on 3/4/2026
Dr caldera is a fantastic doctor. He is extremely thorough with my health and explains everything. He is a great asset to the office. I am glad I have him
- 5 out of 5 starsReviewed on 3/3/2026
Dr Colon is very thorough.
- 5 out of 5 starsReviewed on 2/27/2026
Very pleased with Dr Caldera. Takes time to listen to my concerns and takes appropriate action.
- 4 out of 5 starsReviewed on 2/25/2026
Dr. Caldera takes his time to explain lab results & listen to any concerns. He never rushes thru the appointment.
- 5 out of 5 starsReviewed on 2/25/2026
Dr. Caldera is my favorite doctor of all time. Not, only does he listen intently but, he looks for unspoken clues about my health.
- 5 out of 5 starsReviewed on 2/24/2026
I feel that my provider is well informed in today's medicine.
- 5 out of 5 starsReviewed on 2/23/2026
Dr Caldera is a very. Caring and professional person. Also very knowledgeable and helpful the
- 5 out of 5 starsReviewed on 2/19/2026
Gave me answers to all my questions
- 5 out of 5 starsReviewed on 2/17/2026
Always the best and most respectful
- 5 out of 5 starsReviewed on 2/13/2026
Amazing Doctor as always. Truly a honor to have him as my healthcare provider.
- 5 out of 5 starsReviewed on 2/12/2026
Friendly & took his time with me .
- 5 out of 5 starsReviewed on 2/11/2026
Dr. Caldera is the kind of health care provider every patient hopes to have. He is extremely professional, explains every detail of your health care and makes sure all your questions are answered. I have never felt so confident in the information and treatment I have received from any provider as do with Dr. Caldera.
- 5 out of 5 starsReviewed on 2/10/2026
JONATHAN CALDERA COLON.
- 5 out of 5 starsReviewed on 2/6/2026
I like doctor Caldera , because he is a caring physician.. My blood pressure had been creeping up.. We set a plan out to get it under control..
- 5 out of 5 starsReviewed on 2/5/2026
Always helpful, listens to my problems, answers my questions, explains things to me and very polite.
- 4 out of 5 starsReviewed on 2/5/2026
Very good listener. Very knowledgeable. Cares a lot.
- 5 out of 5 starsReviewed on 2/4/2026
Very good doctor.
- 5 out of 5 starsReviewed on 2/2/2026
Excellent.
- 5 out of 5 starsReviewed on 1/30/2026
Very good practice overall.
- 5 out of 5 starsReviewed on 1/22/2026
Very courteous and knowledgeable. Listens to patient's questions and answers them.
- 5 out of 5 starsReviewed on 1/21/2026
Very personable and knowledgeable.
- 5 out of 5 starsReviewed on 1/15/2026
Doctor Caldera is very thorough, courteous and professional.
- 5 out of 5 starsReviewed on 1/15/2026
Dr Caldera and the nurse was awesome. Very professional, personable and empathic. Dr Caldera listened to my concerns with my new HEDS and Fibromyalgia diagnosis and is coming up with a plan. The fact that he introduces himself and calls people his family is amazing and exactly the dr I needed. Thank you.
- 5 out of 5 starsReviewed on 1/14/2026
The doctor was great.
- 5 out of 5 starsReviewed on 1/12/2026
Dr Caldera Colon is an asset to your team. I have never been to a more compassionate and informed physician
- 5 out of 5 starsReviewed on 1/8/2026
Dr Caldera is the best provider that I have ever had!
- 5 out of 5 starsReviewed on 1/7/2026
First time I saw him he is excellent. Caring thorough, went thru all my health issues, explained everything he was doing. I would have him as a dr all the time.
- 5 out of 5 starsReviewed on 1/6/2026
He was so thorough and concerned about my current illness but also my overall health.
- 5 out of 5 starsReviewed on 1/2/2026
Jonathan and I talked a good plan to get a handle on my diabetes high level of AC ones
- 5 out of 5 starsReviewed on 12/31/2025
Wonderful visit. Great doctor who cares about my health.
- 5 out of 5 starsReviewed on 12/31/2025
Just switch to how many little over a year ago, and it's worked out. Great, I'm so glad I've switched.
- 5 out of 5 starsReviewed on 12/30/2025
Dr. Jonathan
- 5 out of 5 starsReviewed on 12/22/2025
Awesome
- 5 out of 5 starsReviewed on 12/19/2025
He's AMAZING! He listens to what you have to say and answers all questions
- 5 out of 5 starsReviewed on 12/19/2025
Dr. Caldera is very thorough and knowledgeable.
- 5 out of 5 starsReviewed on 12/19/2025
I like him
- 5 out of 5 starsReviewed on 12/19/2025
Very thorough Dr. He goes over your blood work and explains in detail. He listens and is professional .
- 5 out of 5 starsReviewed on 12/18/2025
He is an excellent doctor
- 5 out of 5 starsReviewed on 12/16/2025
Very competent physician. Very thorough.
- 5 out of 5 starsReviewed on 12/16/2025
I love Dr. Colon! He is patient, kind and listens to what you ask him. His reputation in the community is outstanding. I have recommended your practice to many people.
- 5 out of 5 starsReviewed on 12/15/2025
Initial visit with Dr. Caldera Colon. Very pleased with his professionalism, demeanor, his courtesy, knowledge.
- 5 out of 5 starsReviewed on 12/15/2025
This was one of the few times in the 15 years that I have been with this clinic that I have been treated with the professional treatment that I expect from John's Hopkins. The provider had excellent knowledge and bedside manner which made my visit more pleasant and eased my stress about communicating my healthcare concerns and goals. My desire is to collaborate with a professional that respects my wishes and guides me on my healthcare journey without bias.
- 5 out of 5 starsReviewed on 12/15/2025
Very thoughtful provider
- 5 out of 5 starsReviewed on 12/11/2025
The doctor was very knowledgeable about my health at the visit. He did his research!
- 5 out of 5 starsReviewed on 12/10/2025
Very friendly and professional. Took time to listen to me and answer any questions I had. Exactly what I expect from my health care provider.
- 5 out of 5 starsReviewed on 12/9/2025
Very thorough
- 5 out of 5 starsReviewed on 12/4/2025
Dr caldera colon is a very caring and kind man. Cares deeply about his patients health. Very happy with him.
- 5 out of 5 starsReviewed on 12/4/2025
Initial intake visit went very well. Looking forward to following up.
- 5 out of 5 starsReviewed on 12/3/2025
The provider was compassionate, attentive, and genuinely committed to helping me with my health concerns. They offered informed, knowledgeable recommendations, and demonstrated a clear understanding of my needs.
- 5 out of 5 starsReviewed on 12/1/2025
I feel this provider listens to me and is very thorough about doing everything to help better my health
- 5 out of 5 starsReviewed on 11/25/2025
Highly recommend. Have done so to family and friends.
- 5 out of 5 starsReviewed on 11/25/2025
Listens and offers suggestions to improve my health.
- 5 out of 5 starsReviewed on 11/25/2025
Works very hard on my behalf!
- 5 out of 5 starsReviewed on 11/24/2025
Outstanding patient care, outstanding doctor!
- 5 out of 5 starsReviewed on 11/21/2025
Just an overall great health experience
- 5 out of 5 starsReviewed on 11/19/2025
Always knows about my current health goals and recent concerns. Very timely appointments and answers all my questions
- 5 out of 5 starsReviewed on 11/17/2025
Dr Caldera is an excellent doctor He cares about his patients. He takes time to listen to your questions and answer them. I would Highly recommend Dr Caldera to my family and friends.
- 5 out of 5 starsReviewed on 11/17/2025
I have had an excellent experience with my providers, and am receiving excellent care and service.
- 5 out of 5 starsReviewed on 11/17/2025
Dr. Caldera made sure my pain was addressed immediately and gave me the steps to go forward.
- 5 out of 5 starsReviewed on 11/17/2025
Dr. Caldera
- 5 out of 5 starsReviewed on 11/10/2025
This was the first time I had an appointment with Dr Jonathan Caldera Colon. I have only positive things to say about him.
- 5 out of 5 starsReviewed on 11/7/2025
Dr Jonathan Caldera Colon listened, answered my questions and explained my treatment plan clearly.
- 5 out of 5 starsReviewed on 11/6/2025
This was an initial visit which went very well. This was rather soon for some of these questions.
- 5 out of 5 starsReviewed on 11/3/2025
Dr Caldera is a wonderful man and a wonderful doctor
- 5 out of 5 starsReviewed on 11/3/2025
Doctor was very thorough
- 5 out of 5 starsReviewed on 10/31/2025
Excellent choice
- 5 out of 5 starsReviewed on 10/31/2025
Very personable.
- 5 out of 5 starsReviewed on 10/29/2025
He was terrific, although I had a lot of trouble understanding him. He slowed his speech for me, but his accent is very thick. It was difficult to understand what he was saying. Very thorough, really wants to get to the bottom of what's really wrong with my getting infections that usually lead to sepsis
- 5 out of 5 starsReviewed on 10/27/2025
Excellent
- 5 out of 5 starsReviewed on 10/24/2025
Dr. Caldera is an outstanding physician. He is kind, caring and very knowledgeable. He also puts a healthcare plan in motion for me. Do you hear that thunder
- 5 out of 5 starsReviewed on 10/22/2025
Jonathan Caldera Colon
- 5 out of 5 starsReviewed on 10/20/2025
Dr. Provided excellent health care and I fully trust Dr. Caldera with my health needs
- 5 out of 5 starsReviewed on 10/17/2025
Dr. Caldera is the best doctor I have ever had.
- 5 out of 5 starsReviewed on 10/16/2025
Dr Jonathan is always very thorough in explaining my medical tests. He is very personal, in a good way. The office personnel is very helpful with scheduling my appointments and any questions I may have.
- 5 out of 5 starsReviewed on 10/10/2025
Excellent care by Dr. Caldera
- 5 out of 5 starsReviewed on 10/10/2025
I always enjoy seeing Dr. Caldera Colon. He is very knowledgeable, professional and cares about his patients.
- 5 out of 5 starsReviewed on 10/10/2025
Dr. Colon is thorough and makes time to address any concerns.
- 5 out of 5 starsReviewed on 10/8/2025
He is with out a doubt One of the very best GP Doctors I have ever had. And I have had some very great doctors in my life so far.
- 5 out of 5 starsReviewed on 10/7/2025
No issues
- 5 out of 5 starsReviewed on 10/6/2025
Great Doctor
- 5 out of 5 starsReviewed on 10/1/2025
Health interview went well. Very satisfied.
- 5 out of 5 starsReviewed on 9/29/2025
Dr Caldera is an excellent doctor He cares about his patients. I would recommend this Dr to my family and friends
- 5 out of 5 starsReviewed on 9/26/2025
Extraordinarily thorough and professional. Provided/discussed history and test results.
- 5 out of 5 starsReviewed on 9/22/2025
Dr. Caldera is very kind and cares about his patients. He is a good listener. I have had two other doctors at this facility and he Is the best. We will not discuss the other two. I hope he stays.
- 5 out of 5 starsReviewed on 9/18/2025
I am very pleased with Dr. Colon. He is pleasant, knowledgeable and through and explains everything in detail.
- 5 out of 5 starsReviewed on 9/17/2025
I really appreciate dr.colon really taking his time to explain things in a way I understand.
- 5 out of 5 starsReviewed on 9/16/2025
I find Dr Caldera to be a very holistic practitioner. He is always very thorough wilth review of all my issues and concerns.
- 5 out of 5 starsReviewed on 9/15/2025
He goes over everything & never makes me me feel hurried
- 5 out of 5 starsReviewed on 9/15/2025
Exceptional Dr.
- 5 out of 5 starsReviewed on 9/12/2025
I think Dr. Colon is great. The first time I walked in to see him he was just great. He introduced himself gave me alittle background about himself and it felt nice to finally have a Dr. Who was willing to talk and listen go you. I think it was the best visit then and is everytime I see him.
- 5 out of 5 starsReviewed on 9/10/2025
Dr Jonathan is wonderful. He listens and cares about my health. I trust him fully.
- 5 out of 5 starsReviewed on 9/9/2025
Very satisfied with Dr. Caldera Colon! He listens, explains things thoroughly and seems genuinely concerned with my wellbeing.
- 5 out of 5 starsReviewed on 9/9/2025
Dr Caldera is excellent. He is very thorough ands listens
- 5 out of 5 starsReviewed on 9/8/2025
Very good, kind , caring and very professional. A great doctor overall.
- 5 out of 5 starsReviewed on 9/8/2025
Dr. Jonathan Caldera
- 5 out of 5 starsReviewed on 9/5/2025
Dr. Caldera is a one in a million doctor! He really cares and listens.
- 4 out of 5 starsReviewed on 9/4/2025
This was my introductory first visit with Dr Colon. He seemed to have view my medical file before my visit which was very impressive. He was very personable and extremely knowledgeable.
- 5 out of 5 starsReviewed on 9/4/2025
First time with this doctor. He is very knowledgeable and organized. Answered questions and followed through with scheduling blood work for oncologist at Hopkins.
- 5 out of 5 starsReviewed on 9/3/2025
He was very nice.plus he asked the right questions, and gave me some very interesting answers.
- 5 out of 5 starsReviewed on 9/3/2025
Dr Coldera Colon
- 5 out of 5 starsReviewed on 9/3/2025
Excellent service Thank you
- 5 out of 5 starsReviewed on 8/22/2025
Best doctor I've found in this area
- 5 out of 5 starsReviewed on 8/22/2025
Excellent doctor that cares about you
- 5 out of 5 starsReviewed on 8/22/2025
Very informative, listen to my questions, did a follow up concerning some of my health problems and ordered a batteries of blood work.
- 5 out of 5 starsReviewed on 8/21/2025
Everything was very professional and friendly.
- 5 out of 5 starsReviewed on 8/20/2025
Dr Colon is very thorough and knowledgeable . Very good Doctor !
- 5 out of 5 starsReviewed on 8/20/2025
Dr caldera
- 5 out of 5 starsReviewed on 8/20/2025
Very nice...listened ..and had positive feedback
- 5 out of 5 starsReviewed on 8/19/2025
Dr Caldera Colon is great. Knowledgable, personable, thorough.
- 5 out of 5 starsReviewed on 8/18/2025
Excellent
- 5 out of 5 starsReviewed on 7/25/2025
Dr Caldera is wonderful. I have a lot of faith in him. Very fortunate to have him as my doctor.
- 5 out of 5 starsReviewed on 7/23/2025
Very Competent, friendly, empathetic
- 5 out of 5 starsReviewed on 7/23/2025
Always treated well and never feel rushed
- 5 out of 5 starsReviewed on 7/17/2025
Knowledgeable, courteous, listens to patient
- 5 out of 5 starsReviewed on 7/16/2025
Excellent doctor personable, knowledgeable
- 5 out of 5 starsReviewed on 7/16/2025
Dr. Caldera is a good caring Doctor thank you Jonathan.
- 5 out of 5 starsReviewed on 7/3/2025
Dr Colon is very attentive and listened To my concerns.
- 5 out of 5 starsReviewed on 7/3/2025
Very courteous and professional , spent time going over blood test results and asked questions . I'm very pleased with the time spent.
- 5 out of 5 starsReviewed on 7/2/2025
Excellent provider, listens, covers everything, offers a plan for monitoring.
- 5 out of 5 starsReviewed on 6/27/2025
I am very pleased with my provider and glad I chose him and fhat he was taking new patients.
- 5 out of 5 starsReviewed on 6/26/2025
The best doctor I have ever had. Very knowledgeable and caring.
- 5 out of 5 starsReviewed on 6/26/2025
Dr Caldera Colon is an excellent! Doctor
- 5 out of 5 starsReviewed on 6/26/2025
Dr Caldera is a wonderful doctor. He is kind and caring while being thorough with his exams and questions.
- 5 out of 5 starsReviewed on 6/19/2025
The visit was scheduled on time since my surgery was scheduled shortly after my visit.Many thanks for making this happen.
- 5 out of 5 starsReviewed on 6/13/2025
Dr. Colon is very proffessional.
- 5 out of 5 starsReviewed on 6/13/2025
The doctor is very professional and knowledgeable.
- 5 out of 5 starsReviewed on 6/12/2025
Dr Caldera is very thorough, and concerned about my health and well being.
- 5 out of 5 starsReviewed on 6/11/2025
Very thorough and explained so ioild understand
- 5 out of 5 starsReviewed on 6/6/2025
Very thorough and knowledgeable .
- 5 out of 5 starsReviewed on 6/5/2025
I found Dr. Caldera was very thorough with the information he gave me.
- 5 out of 5 starsReviewed on 6/4/2025
Dr. Caldera Colon is always kind, patient and ver knowledgeable. I trust him explicitly. He is a good doctor.
- 5 out of 5 starsReviewed on 6/4/2025
Excellent
- 5 out of 5 starsReviewed on 6/2/2025
The doctor was great. I appreciate his concerns, actions, and plan for me going forward. His future plans on how he would take care of me for any future issues.
- 5 out of 5 starsReviewed on 6/2/2025
Doctor Colon is patient and knid. He listens to what you have to say and treats accordingly. He is awesome!
- 5 out of 5 starsReviewed on 5/23/2025
Listens and helps to solve results to relieve pain .
- 5 out of 5 starsReviewed on 5/22/2025
Dr Caldera takes the time to answer my questions.
- 5 out of 5 starsReviewed on 5/21/2025
Dr. Colon has been exceptional to date with thoroughness, patient centered care, communication, and empathy.
- 5 out of 5 starsReviewed on 5/21/2025
Thanks for the excellent care!
- 5 out of 5 starsReviewed on 5/16/2025
Very thorough -
- 5 out of 5 starsReviewed on 5/13/2025
Love Dr.Caldera Colon! He is very very through! Nuf said!