
Highlights
Age Groups Seen
- Adolescent 13-17
- Young Adult 18-25
- Adult 26-64
- Older Adult 65+
Languages
- English
Gender
FemaleJohns Hopkins Affiliations:
- Johns Hopkins School of Medicine
About Deborah Horwitz
Johns Hopkins Clinician
Locations
- Sibley Memorial Hospital
- 5215 Loughboro Road Northwest, Suite 140, Washington, DC 20016
- Get Directions
- phone: 410-955-5933
- fax: 202-660-7082
Expertise
Education
- Graduate School: Baylor College of Medicine, Physician Assistant, MSPAS, 2010
Board Certifications
- Physician Assistant: National Commission on Certification of Physician Assistants, 2011
Ratings & Reviews
4.8 out of 5
181 ratings, 74 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. Horwitz is very easy to talk to, knowledgeable, and professional.
- 5 out of 5 starsReviewed on 3/18/2026
Dr. Horwitz was thorough in addressing my questions about the treatment for my arms Ana this has already had a better impact on my skin.
- 5 out of 5 starsReviewed on 2/12/2026
Doctor Deborah Horwitz is cheerful attentive to questions and makes you feel comfortable.
- 5 out of 5 starsReviewed on 2/4/2026
Worth waiting for. Did wait for an appointment & for the Doctor.
- 5 out of 5 starsReviewed on 2/2/2026
Great. Smart. Professional.
- 5 out of 5 starsReviewed on 1/29/2026
She is careful, personable, knowledgeable, caring
- 5 out of 5 starsReviewed on 1/29/2026
Deborah was thorough and knowledgeable. She is excellent.
- 5 out of 5 starsReviewed on 1/22/2026
I think Dr. Horwitz is a wonderful human being and definitely a professional
- 5 out of 5 starsReviewed on 1/22/2026
Deborah Horwitz Came across to me as friendly, highly competent, and someone to return to in the future!
- 5 out of 5 starsReviewed on 1/21/2026
Exelent
- 5 out of 5 starsReviewed on 1/15/2026
PA Horwitz is an outstanding Dermatology physician and is professional, personable, and thoroughly attentive to my needs.
- 5 out of 5 starsReviewed on 1/15/2026
Deborah Horwitz is a great provider. She's kind and patient abd I'm glad to have her.
- 5 out of 5 starsReviewed on 1/15/2026
Ms. Horwitz was pleasant and very helpful.
- 5 out of 5 starsReviewed on 1/8/2026
Very nice and attentive, knowledgeable
- 5 out of 5 starsReviewed on 1/8/2026
Great! Responsive! Cares!
- 5 out of 5 starsReviewed on 1/7/2026
She is great
- 5 out of 5 starsReviewed on 12/18/2025
Deborah is tops in her field. She is very knowledgeable, helpful, and engaged in my health. She is the best practitioner In Dermatology that I have experienced.
- 5 out of 5 starsReviewed on 12/17/2025
As I've said before PA Horwitz is a superior provider and clinician. I trust her.
- 5 out of 5 starsReviewed on 12/17/2025
Professional, knowledgeable and personable.
- 5 out of 5 starsReviewed on 12/4/2025
Outstanding! Will highly recommend provider to family and friends.
- 5 out of 5 starsReviewed on 12/4/2025
I have lived in the DC area for about 18 years and I've been going to John Hopkins for all of my medical needs and overall I find each and every caregiver a professional
- 5 out of 5 starsReviewed on 12/1/2025
I am recommending her to family and friends. Also I love sibley and drive there from northern Virginia so I can stay within the Hopkins system.
- 5 out of 5 starsReviewed on 11/20/2025
She is an excellent DOCTOR
- 5 out of 5 starsReviewed on 11/19/2025
Having previously had a very large 13 stitch skin cancer removed I was deeply concerned about a new growth on my face. Deborah Horwitz professionally examined my area of concern and assured me the growth was not cancerous. It was a fast growing skin problem that she immediately solved by freezing it. I was totally happy and delighted with the treatment of my face and with me as a patient.
- 5 out of 5 starsReviewed on 11/19/2025
Excellent. Happy to have found her.
- 5 out of 5 starsReviewed on 11/17/2025
Excellent!
- 5 out of 5 starsReviewed on 11/13/2025
Excellent
- 5 out of 5 starsReviewed on 11/13/2025
Deborah Horwitz was excellent - was very helpful in explaining things and showing the care I expected for this appointment.
- 5 out of 5 starsReviewed on 11/12/2025
This was the first time I have seen PA Horwitz. Very friendly demeanor and gentle approach. I found her to be very open to any questions and thorough in her answers. I would/will definitely consult if necessary.
- 5 out of 5 starsReviewed on 11/5/2025
I believe Dr. Horwitz does great work evaluating my condition and providing suggestions and care.
- 5 out of 5 starsReviewed on 11/3/2025
I was impressed with the detail she went through. Very professional, I felt very comfortable with her
- 5 out of 5 starsReviewed on 10/23/2025
She was thorough.
- 5 out of 5 starsReviewed on 10/23/2025
Excellent
- 2 out of 5 starsReviewed on 10/16/2025
Made me feel stupid for asking questions and seemed very rushed. I waited a long time for this appt and was so disappointed.
- 5 out of 5 starsReviewed on 10/16/2025
Deborah was very attentive, thorough, and helpful. I would happily see her agsin.
- 5 out of 5 starsReviewed on 10/9/2025
My first visit. She was thorough and knowledgable.
- 5 out of 5 starsReviewed on 10/9/2025
Dr Horwitz was very attentive ask questions to get a visual of what had been happening prior to my uticara and followed up with additional test which I needed
- 5 out of 5 starsReviewed on 10/9/2025
I really like Dr. Horwitz. I have not had good luck with Hopkins retaining any dermatologists that I have liked. I hope I have better luck this time.
- 5 out of 5 starsReviewed on 10/6/2025
Professional, friendly, efficient
- 5 out of 5 starsReviewed on 9/25/2025
Excellent!
- 5 out of 5 starsReviewed on 9/24/2025
Ms. Horwitz is amazing. She really provides a high level of care!
- 5 out of 5 starsReviewed on 9/24/2025
Dr Horwitz was very professional and answered all my questions. She is an asset to your company
- 5 out of 5 starsReviewed on 9/17/2025
She's great. Listened carefully, answered all my questions and showed appropriate concern
- 5 out of 5 starsReviewed on 9/17/2025
PA Horwitz is a consummate professional. She is attentive, understanding, and collaborative.
- 5 out of 5 starsReviewed on 9/17/2025
Dr was very good
- 5 out of 5 starsReviewed on 9/15/2025
Knowledgeable, caring and pleasant.
- 5 out of 5 starsReviewed on 9/11/2025
The doctor was great, however, this appointment was scheduled several months out even though I needed it right away, so I had to see a different provider (non Johns Hopkins) before coming to this one.
- 5 out of 5 starsReviewed on 9/11/2025
She was so kind, and so patient and answered all of my questions, acknowledging my concerns and asking specific questions so that she could prescribe or give the correct care.
- 5 out of 5 starsReviewed on 9/11/2025
New provider for me. Very good.
- 5 out of 5 starsReviewed on 9/4/2025
She is the best
- 5 out of 5 starsReviewed on 8/13/2025
Provider took her time to explain what I was there for. I am satisfied with me visit, and will revisit again.
- 5 out of 5 starsReviewed on 8/7/2025
Ms Horwitz is a top notch provider. After a year since my last visit she was on top of some issues with the skin at my scalp. Took action right away
- 2 out of 5 starsReviewed on 8/7/2025
Provider seemed inexperienced
- 5 out of 5 starsReviewed on 8/7/2025
Thorough and professional
- 5 out of 5 starsReviewed on 7/24/2025
It seems that scheduling an appointment with Ms. Horwitz is always months off.
- 5 out of 5 starsReviewed on 7/24/2025
Confidently capable and direct with a good sense of humor. Relaxed and efficient without seeming rushed or distracted. Answered questions carefully and asked questions to insure that I understood the procedures she performed and my responsibility for self-treatment and followup.
- 5 out of 5 starsReviewed on 7/24/2025
Everything was fine
- 5 out of 5 starsReviewed on 7/10/2025
Excellent!! So warm and knowledgeable
- 5 out of 5 starsReviewed on 7/9/2025
Deborah Horwitz is the Best! I have every confidence in her professional abilities.
- 5 out of 5 starsReviewed on 6/26/2025
All good!
- 5 out of 5 starsReviewed on 6/23/2025
Excellent
- 5 out of 5 starsReviewed on 6/23/2025
Dr. Horwitz is a professional's professional. Her service is next to none and has an art to make you feel comfortable and supported during your visit. Also she is results oriented which is great.
- 4 out of 5 starsReviewed on 6/16/2025
Provider is always nice and friendly
- 5 out of 5 starsReviewed on 6/16/2025
Proficient andhelpful
- 5 out of 5 starsReviewed on 6/16/2025
The PA was fantastic. So happy to know she is on board!!
- 3 out of 5 starsReviewed on 6/12/2025
Nice but I felt she was in a rush.
- 5 out of 5 starsReviewed on 6/12/2025
She is great. I don't like going to medical visits, but PA Horwitz is professional, interested, and affable.
- 5 out of 5 starsReviewed on 6/11/2025
Excellent doctor who is patient and explains things clearly-thank you !
- 5 out of 5 starsReviewed on 6/9/2025
Provider was terrific. Thorough and caring.
- 5 out of 5 starsReviewed on 6/5/2025
Very good technically
- 5 out of 5 starsReviewed on 6/5/2025
Very thorough and detailed
- 5 out of 5 starsReviewed on 6/2/2025
She's great. I like her a lot.
- 5 out of 5 starsReviewed on 5/29/2025
Has the record from my other doctor, which made it easier for her to prescribe stuff for me to take
- 4 out of 5 starsReviewed on 5/15/2025
I have already recommended Dr. Horwitz to my daughter.