Highlights
Age Groups Seen
- Adult
Languages
- English
Gender
FemaleEducation & Board Certifications
Education
- Fellowship: Jackson Memorial Hospital, 2017
- Residency: Bella Vista Hospital, 2016
- Medical Education: Universidad del Norte, 2004
Board Certifications
- Geriatric Medicine: American Board of Family Medicine, 2017
- Family Medicine: American Board of Family Medicine, 2016
Research & Publications
See publications for this provider. (Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)
Industry Relationships
Cleveland Clinic physicians and scientists collaborate with industry to advance medical breakthroughs. These partnerships help commercialize discoveries for public benefit while maintaining scientific integrity. To ensure transparency and minimize potential bias, Cleveland Clinic reviews these relationships and publicly discloses when physicians/scientists receive significant compensation for consulting, serve in fiduciary roles, receive royalties, or hold equity interests related to their work. We manage potential conflicts through approval processes, annual reporting, and targeted management plans.
As of 2026-01-01, Dr. Sierra has reported no financial relationship with industry that is applicable to this listing.
In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.
Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers' discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.
* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.
Insurances Accepted
Ratings & Reviews
4.9 out of 5
575 ratings, 117 reviewsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- 5 out of 5 starsReviewed on 4/14/2026
Dr. Sierra is a wonderful, caring doctor. She takes good care of me.
- 5 out of 5 starsReviewed on 4/14/2026
I am happy with the care of my primary doctor.
- 5 out of 5 starsReviewed on 4/14/2026
Very good, all the time she was aware of my state of health
- 5 out of 5 starsReviewed on 4/2/2026
I felt the real interest of the Dr, on my health issues, and found her to be a very professional and knowledge Dr.
- 5 out of 5 starsReviewed on 4/2/2026
Dr Sierra Karen excellent Dr. I am so glad to have her as my primary Dr.
- 5 out of 5 starsReviewed on 4/2/2026
Dr Sierra is compassionate caregiver. Explains everything in layman''s terms.
- 5 out of 5 starsReviewed on 3/30/2026
OMG! Dr Sierra is amazing. She totally understood I had a family member pass away and she knew exactly what I needed to hear. She made suggestions for my well-being. She has a passionate heart for her patients.
- 5 out of 5 starsReviewed on 3/30/2026
Dr sierra is so kind and understanding. She takes her time with me
- 5 out of 5 starsReviewed on 3/23/2026
I''ve had several primary care physicians in my long life. Dr. Sierra is easily the best of them. She knows her medicine, but you expect this at Cleveland Ckinic. More importantly, she genuinely cares. Don''t let her leave.
- 5 out of 5 starsReviewed on 3/23/2026
This Doctor has superior medical skills.
- 5 out of 5 starsReviewed on 3/23/2026
Dr sierra is the best internal medicine specialist I ever had . I feel fortunate to have her as my MD
- 5 out of 5 starsReviewed on 3/23/2026
The best Doctor I have ever had.
- 5 out of 5 starsReviewed on 3/23/2026
Dr Sierra is a very caring doctor and takes her time listening to any concerns you may have.
- 5 out of 5 starsReviewed on 3/2/2026
Dr. Sierra is the best.
- 5 out of 5 starsReviewed on 3/2/2026
My experiences with Dr. Sierra has always been good.
- 5 out of 5 starsReviewed on 3/2/2026
So professional, pleasant and caring. She is a good listener and has great empathy for your issues and does give advise for your overall wellbeing.
- 5 out of 5 starsReviewed on 3/2/2026
Dr. Sierra is a very compassionate and caring doctor.
- 5 out of 5 starsReviewed on 2/24/2026
Thank you Dr. Sierra for the outstanding care and support during my visits. Your professionalism, kindness, and organization made everything smooth and comfortable. I''m very grateful.
- 5 out of 5 starsReviewed on 2/24/2026
Dr Sierra is very caring, answers any questions that I have and is very concerned for my wellbeing. She is the best!
- 5 out of 5 starsReviewed on 2/24/2026
I really like Dr Sierra and I feel that she sees me.
- 5 out of 5 starsReviewed on 2/24/2026
I never have problem raising medical questions and discussing my issues with Dr. Sierra. She can always direct me to the right direction.
- 5 out of 5 starsReviewed on 2/16/2026
Dr. Sierra is wonderful. She is willing and able to listen and provide me with recommendations based on my needs even if I do not ant to hear.
- 5 out of 5 starsReviewed on 2/10/2026
She takes her time with patient care.
- 5 out of 5 starsReviewed on 2/3/2026
My Dr was friendly and professional and I am happy with her care.
- 5 out of 5 starsReviewed on 2/3/2026
The doctor was excellent and is addressing my symptoms for over 2 years of living with crippling pains and Frontal Lobe Dementia issues as well.She is my only hope
- 5 out of 5 starsReviewed on 1/26/2026
Took her time to address all the concerns.
- 5 out of 5 starsReviewed on 1/26/2026
They were all very good. She talked to me with a very nice attitude. Was extremely nice to my daughter both with her personal and professionalism. Both, my daughter and I were very thankful to Dr.Sierra for the time she took as treating me according to my age mental state and giving my daughter enough information to look for keep me as well taken care of as possible. Dr. Sierra is the best doctor to treat people like me. So sweet and knowledgeable ! God Bless Her!
- 5 out of 5 starsReviewed on 1/26/2026
Both, my daughter and I were very satisfied with Dr. Sierra.she was very professional but also very understood my animic state and how it affects my health in general. Excellent doctor!
- 5 out of 5 starsReviewed on 1/20/2026
Dr. Sierra is one of the reasons we continue going to Cleveland Clinic. My family highly appreciates her professionalism and human touch with her patients. She does show genuine interest towards the patient's concerns and works with us to find solutions.
- 5 out of 5 starsReviewed on 1/20/2026
Dr Sierra was very attentive and compassionate
- 5 out of 5 starsReviewed on 1/13/2026
My doctor is awesome she cares and makes you feel very welcome with her patience
- 5 out of 5 starsReviewed on 1/13/2026
I am extremely pleased with my health provider because she cares about my well been She is always prepared for my visit, she is interested in what I have to say and she
- 5 out of 5 starsReviewed on 1/13/2026
Very pleased with Cleveland clinic and my providers
- 5 out of 5 starsReviewed on 1/13/2026
From checking to see provider excellent customer service
- 5 out of 5 starsReviewed on 1/13/2026
Excellent listener Feel she is invested in my having good health
- 5 out of 5 starsReviewed on 1/13/2026
The Dr. Was very professional and very nice.
- 5 out of 5 starsReviewed on 1/13/2026
Provider is very concerned about me.
- 5 out of 5 starsReviewed on 1/13/2026
Dr. Sierra is outstanding. She always explains everything in detail that is easily understandable and is a very caring physician.
- 5 out of 5 starsReviewed on 1/13/2026
Dr. Sierra was professional and lusten to me with concerned about me and answered my questions.
- 5 out of 5 starsReviewed on 1/13/2026
Dr Sierra is a great doctor
- 5 out of 5 starsReviewed on 12/30/2025
Dr. Sierra and her nurse Jackie make a great team of excellent care givers. I always feel I am in good hands.
- 5 out of 5 starsReviewed on 12/30/2025
She has always treated us like family
- 5 out of 5 starsReviewed on 12/30/2025
Dr Sierra is a wonderful caring physician
- 5 out of 5 starsReviewed on 12/23/2025
What can I say about Doctor Sierra except that she is the consummate professional who is kind, patient and always ready to make recommendations and suggestions on how you can maintain and improve your health. A compassionate listener, who reflects on everything you ask her and then provides the patient with clear, concise answers that can be understood by her patients. I am blessed to have her for my physician and my advocate.
- 5 out of 5 starsReviewed on 12/23/2025
Dr. Karen Sierra is a dedicated person. She shows true concern for my well being. She listens, asks the right questions, Is caring. I feel she really takes my health and well being seriously. She Is excellent!
- 5 out of 5 starsReviewed on 12/11/2025
We like Dr Sierra
- 5 out of 5 starsReviewed on 12/11/2025
Excellent doctor.
- 5 out of 5 starsReviewed on 12/9/2025
Excellent care by Dr Sierra Listens well, doesn't rush, very thorough Highly recommend
- 5 out of 5 starsReviewed on 12/9/2025
Dr. Sierra is thorough and EXCELLENT !!
- 5 out of 5 starsReviewed on 12/9/2025
Dr Sierra is a fantastic geriatric physician . Very caring, very patient and VERY competent
- 5 out of 5 starsReviewed on 12/9/2025
She will always be my favorite doctor
- 5 out of 5 starsReviewed on 12/9/2025
She is wonderful, helpful, knowledgeable, caring and well educated.
- 5 out of 5 starsReviewed on 12/2/2025
Really liked Dr. Sierra. The appointment didn't feel rushed. She listened to me.
- 5 out of 5 starsReviewed on 12/2/2025
Dr. Sierra is very attentive and really listens to patient concerns. She suggested physical therapy for a couple of concerns
- 5 out of 5 starsReviewed on 12/2/2025
If u had an excellent column, that's where I would tick for Dr. Sierra.She is most kind, caring , knowledgeable and knows how to zero in on my concerns
- 5 out of 5 starsReviewed on 12/2/2025
Dr Sierra is among the bet doctors I have ever encountered. She listens, pays attention, is medically very knowledgeable, is helpful, courteous and thorough. I don't think you'll find a better general practitioner anywhere.
- 5 out of 5 starsReviewed on 12/2/2025
Dr Sierra is the reason I make this long trek. She is most patient especially since I take time to collect my thoughts and express my answers to her questions. She is trustworthy, giving me suggestions for improving my daily life and warning me that the road may not be easy but I can do it if I put my mind to it
- 5 out of 5 starsReviewed on 11/25/2025
Dr Sierra is the best. We need more like her
- 5 out of 5 starsReviewed on 11/14/2025
My experience with Dr. Sierra is really good
- 5 out of 5 starsReviewed on 11/14/2025
Dr. Sierra gave me and my wife as much time as we needed to talk about our concerns regarding my health in various aspects. This was greatly appreciated!
- 5 out of 5 starsReviewed on 11/11/2025
Dr Sierra simply brings professionalism to another level
- 5 out of 5 starsReviewed on 11/11/2025
Karen Sierra is one of the most professional doctors I've ever seen at the center. She goes above and beyond it is an excellent asset to the Cleveland clinic. Four star Dr!
- 5 out of 5 starsReviewed on 11/11/2025
Dr Sierra is the best!
- 5 out of 5 starsReviewed on 11/4/2025
I'm glad that I decided to choose Dr. Sierra as my primary care doctor. A professional whom cares about the patient under her care
- 5 out of 5 starsReviewed on 11/4/2025
Dr. Sierra is an amazing doctor. She listens to our concerns and takes her time with us. She asks us many questions which allows her to make accurate decisions about our conditions. We are so grateful that she is our doctor.
- 5 out of 5 starsReviewed on 11/4/2025
I always experiment a very good experience when visiting Dr. Sierra. Not even the more slighted complaint.
- 5 out of 5 starsReviewed on 10/17/2025
Dr. Sierra always demonstrate care on my visit and recommend what's needed for any concerns or questions I have.
- 5 out of 5 starsReviewed on 10/14/2025
I have recommended friends to Dr. Sierra and they were very satisfied
- 4 out of 5 starsReviewed on 10/14/2025
The doctor showed interest in my health was thorough, polite, and very professional
- 5 out of 5 starsReviewed on 10/14/2025
Dr. Sara, we love you. You do an excellent job.
- 5 out of 5 starsReviewed on 10/2/2025
Dr Sierra is amazing!!
- 5 out of 5 starsReviewed on 9/18/2025
Dr Sierra is outstanding in every way a patient hopes for. I feel blessed to have her in my corner. She is a caring intelligent direct and kind doctor. I am grateful
- 5 out of 5 starsReviewed on 9/18/2025
PROBABLY THE VERY BEST PRACTITIONER IN THE GROUP !!!Outstanding intelligence , amazing memory ;) and superb training !!!I'm a physician and in my opinion DR SIERRA IS THE BEST OF THE BEST !!!!
- 5 out of 5 starsReviewed on 9/16/2025
Dr. Sierra was outstanding. Having seen doctors at Cleveland Clinic for 20+ years and for just a first visit with her, I came away more Impressed than any other doctor I've seen. She was very insightful regarding my health condition and offered treatments that made sense and were logical steps the I need to take. I walked away feeling she had a vested interest in my long term health and well being.
- 5 out of 5 starsReviewed on 9/4/2025
Dr Sierra is always excellent. She's professional but caring and a good listener. Always has advice for problems. I always feel like she knows me and cares about my well being
- 5 out of 5 starsReviewed on 9/4/2025
Dr. Sierra it was very helpful in getting my referral expedited and answered all my questions regarding my health. She is an excellent doctor and I appreciate her.
- 5 out of 5 starsReviewed on 9/4/2025
Dr. Karen is the best doctor I have had. She's great!
- 5 out of 5 starsReviewed on 9/4/2025
I'm very happy with Dr. Sierra. She listens to my concerns and prides excellent explanations and care.
- 5 out of 5 starsReviewed on 9/2/2025
Dr. Sierra is an excellent primary care doctor for me. I trust her judgment and treatment plan for my numerous physical conditions.
- 5 out of 5 starsReviewed on 9/2/2025
Dr. Sierra is always helpful. She really listens to me. She's the best.
- 5 out of 5 starsReviewed on 9/2/2025
I always feel I'm in good hands with Dr. Sierra and her helpers
- 5 out of 5 starsReviewed on 8/22/2025
Karen Sierra, MD is an amazing doctor. She listens, explains and goes the extra mile. She is a very good diagnostician due to her knowledge and listening abilities. Excellent doctor.
- 5 out of 5 starsReviewed on 8/1/2025
Dr Sierra is detailed and thorough. We are grateful to have her in a specialty that speaks to our age related issues. Great listener and clear speaking.
- 5 out of 5 starsReviewed on 8/1/2025
Dr Sierra is always very attentive and spends a good amount of time to listen and provide a solution to issues.
- 5 out of 5 starsReviewed on 7/28/2025
Dr. Sierra is very caring, always looking out for my best interest.
- 4 out of 5 starsReviewed on 7/11/2025
I am very pleased with the Service of the Cleveland Clinic and Dr. Karen Sierra and her wonderful Team.
- 5 out of 5 starsReviewed on 7/11/2025
Dr. Sierra it was very kind and courteous. She showed genuine concern for my issues. I did not feel rushed, and she listened to me. I would give her a five star review any day
- 5 out of 5 starsReviewed on 7/11/2025
Dr. Sierra makes sure you understand everything before you leave the office. She is very caring
- 5 out of 5 starsReviewed on 7/8/2025
Dr. SIERRA is very competent as well as very personable. I benefit from my visit and enjoy my time with her.
- 5 out of 5 starsReviewed on 6/30/2025
Consideration and care depends on the department. This Dr and staff are excellent
- 5 out of 5 starsReviewed on 6/20/2025
Jackie and Dr sierra gave me a winderful experience
- 5 out of 5 starsReviewed on 6/20/2025
Jackie the nurse amazing and helpful. Dr sierra was the best in understanding my needs
- 5 out of 5 starsReviewed on 6/20/2025
Dr sierra was very understanding and helpful to me
- 5 out of 5 starsReviewed on 6/13/2025
Dr. Sierra is excellent. I really believe she is genuinely interested in my case and does everything possible to make sure I stay healthy.
- 5 out of 5 starsReviewed on 6/13/2025
Dr. Sierra is very detailed in reviewing all issues and always ready to discuss any questions I have. Very much appreciated.
- 5 out of 5 starsReviewed on 6/10/2025
As always, Dr Sierra was wonderful She's a good listener and very thorough.
- 5 out of 5 starsReviewed on 6/10/2025
Dr Sierra was thorough and very knowledgeable
- 5 out of 5 starsReviewed on 6/3/2025
Dr sierra is the BEST!
- 5 out of 5 starsReviewed on 5/27/2025
All experiences were good. Provider very knowledgeable and practical. Left a very good impression.
- 5 out of 5 starsReviewed on 5/27/2025
Dr Sierra is the Best she keeping me ticking at 84 and I'm so thankful for having her as a Dr she cares about us
- 5 out of 5 starsReviewed on 5/27/2025
Dr. Sierra is very thorough in checking prescriptions and recent medical treatment. She is great!
- 5 out of 5 starsReviewed on 5/27/2025
I have been very impressed with Dr. Sierra and her staff
- 5 out of 5 starsReviewed on 5/27/2025
I am very impressed with Dr. Sierra's knowledge, professionalism, and Interest in me as a patient and a person. She is also very prompt in responding to messages through MyChart
- 5 out of 5 starsReviewed on 5/27/2025
Provider listened carefully and addressed concerns with compassion.
- 5 out of 5 starsReviewed on 5/15/2025
Dr. Karen Sierra truly cares for her patients. Is focused, detailed oriented, during the visit she evaluated every aspect of me as her patient, physically, anatomically, an emotional. She is very caring and dedicated.
- 5 out of 5 starsReviewed on 5/15/2025
Jackie and Dr. Sierra are excellent!
- 5 out of 5 starsReviewed on 5/13/2025
Very professional and caring. Excellent doctor!!
- 5 out of 5 starsReviewed on 5/6/2025
Great experience all around with Dr Sierra and Jackie.
- 5 out of 5 starsReviewed on 5/6/2025
Dr.Sierra always gives me as much time as I need.Always answers my questions.
- 5 out of 5 starsReviewed on 5/6/2025
I drive an hour (each way) to see Dr. Sierra but she makes it worthwhile.She is caring, patient and takes time with you - not face buried in the computer.She validates your concerns and explores solutions with your input.When I think that maybe the drive is overwhelming she makes it worth the effort
- 5 out of 5 starsReviewed on 4/29/2025
Overall very satisfied with the doctor and the staff.
- 5 out of 5 starsReviewed on 4/29/2025
Seeing Dr Sierra was a very good experience. My concerns regarding my health were explained to her and I received a referral for my medical situation.
- 5 out of 5 starsReviewed on 4/29/2025
Dr. Sierra is attentive and listen without haste
- 5 out of 5 starsReviewed on 4/29/2025
Amazing care provider! Takes time to consider patient's condition concerns and feelings
- 5 out of 5 starsReviewed on 4/29/2025
Dr Sierra is amazing, she schedules myMom's visits for extended time, so that she can provide her with the service she needs . I am so thankful that someone with compassion is caring for my mom
- 5 out of 5 starsReviewed on 4/29/2025
Extremely grateful to nurse Jacqueline and Dr Sierra for the treatment and interaction received during mi first visit.
- 5 out of 5 starsReviewed on 4/29/2025
I had 9 skin biopsies performed at CC and still had surgical dressings on. Dr Sierra took the time to remove, clean each lesion and reapply new dressings! Great Dr who is pt oriented!