Biography

Kermith Vega Cartagena, MD, focuses on developing positive personal relationships with patients so they can feel comfortable discussing the factors affecting their livelihoods. He appreciates having the opportunity to establish meaningful patient-doctor connections.

Dr. Vega Cartagena was born and raised in Puerto Rico. He decided to become a doctor after spending much of his childhood watching his father, a physical therapist, care for patients. He earned his medical degree at the Autonomous University of Guadalajara and completed his residency at the Texas Institute for Graduate Medical Education and Research (TIGMER).

Dr. Vega Cartagena’s favorite aspect of being an MD is helping his patients feel better. His top clinical interests include diabetes, preventive care and sports medicine. He currently lives in San Antonio, Texas, where he enjoys hiking, mountain biking, going to the gym and spending quality time with his dog and friends.

Clinical interests

Diabetes
Family medicine
High blood pressure
High cholesterol
Preventive care
Sports medicine

Locations

Education and credentials

Board certifications
American Board of Family Medicine
Medical school
Autonomous University of Guadalajara
Intern/residency
Texas Institute for Graduate Medical Education and Research

Accepted insurances

We accept many major health insurance plans. Insurance plans accepted vary by doctor and can change. Please call your clinic directly to confirm what insurances are accepted.
Clinician numbers for agent use only.
Aetna (8973034)
BCBS (8UF184)
HealthSpring (1174140842)
Humana (See payor website)
Superior Health (See payor website)
UnitedHealthcare (1678-0053)
Wellcare (1174140842)

Patient Reviews

Learn about our survey
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117 Results

  • March 10, 2026

    Verfied Review

    5 out of 5 patient rating

    Very informative, listens.

  • March 20, 2026

    Verfied Review

    5 out of 5 patient rating

    He was very patient and his concerns for my health were very heartfelt

  • March 15, 2026

    Verfied Review

    5 out of 5 patient rating

    I would recommend him because he explains everything he might say in plain English, that you can understand

  • March 18, 2026

    Verfied Review

    5 out of 5 patient rating

    Dr Cartagena was very friendly and professional. He gave me a lot of insight about my ailment. His diagnosis was correct about my problem.

  • March 19, 2026

    Verfied Review

    5 out of 5 patient rating

    Knowledgeable, compassionate

  • January 30, 2026

    Verfied Review

    5 out of 5 patient rating

    very good dr. wanting to help you very caring in ur need to get well and keep well

  • February 08, 2026

    Verfied Review

    5 out of 5 patient rating

    He made me feel very at ease and was very attentive. I have already recommended him to my sister.

  • February 21, 2026

    Verfied Review

    5 out of 5 patient rating

    He is compassionate caring & he genuinely wants to be active in my health well-being He is able to keep me informed of my progress He explains why I feel confident having him as my primary physician because he's able to communicate with compassionate caring language

  • February 28, 2026

    Verfied Review

    5 out of 5 patient rating

    He is a very good doctor I really like him a lot not he truly cares about your health and always ask questions how's everything going with me I've never had a doctor so concerned about my health He's very easily to talk to very sweet tries to give me medication that does not give me too much side effects I have been doing very great with him

  • January 20, 2026

    Verfied Review

    5 out of 5 patient rating

    He provides good care and answers my questions fully. I only live 5 minutes away from the well med on walzem but continue to go to the Southcross location (25 minutes away) because of Dr. Cartagena.

  • January 01, 2026

    Verfied Review

    5 out of 5 patient rating

    He has been great with my care and I can tell him what the issue is and he finds a solution to the issue and the treatments have been very effective

  • January 24, 2026

    Verfied Review

    3 out of 5 patient rating

    I don't know him, my first time

  • February 03, 2026

    Verfied Review

    5 out of 5 patient rating

    very professional and caring.

  • December 10, 2025

    Verfied Review

    5 out of 5 patient rating

    Felt he really cared for me

  • November 01, 2025

    Verfied Review

    4.5 out of 5 patient rating

    HE SEEMS TO CARE ABOUT ME AND IS KNOWLEDGEABL E.

  • November 24, 2025

    Verfied Review

    5 out of 5 patient rating

    Been seeing him & remerbers who I am

  • November 06, 2025

    Verfied Review

    5 out of 5 patient rating

    When my wife was in a crisis situation and her primary care physician was unavailable, Dr. Vega stepped in, worked very diligently, and got her the care that she needed quickly. When I needed to choose a primary care physician, I chose Dr. Vega, and I am glad that I did.

  • November 23, 2025

    Verfied Review

    5 out of 5 patient rating

    Completely satisfied with Dr. Cartagena professionalism. He is a very knowledgeable physician. He listens and offers a calm supportive manner, when discussing your medical concerns. I appreciate his honest accessment of my medical problems. He's an outstanding young man.

  • November 22, 2025

    Verfied Review

    5 out of 5 patient rating

    Very thorough on explanation of treatment plans.

  • October 09, 2025

    Verfied Review

    4.5 out of 5 patient rating

    He listens and asks questions about your health.

  • October 04, 2025

    Verfied Review

    5 out of 5 patient rating

    He was very knowledgeable and he explained very well

  • October 05, 2025

    Verfied Review

    5 out of 5 patient rating

    Dr. Vega Cartagena is a great doctor. He listens to my concerns, explains my results in a way I can understand and I appreciate his support when comes to my health.

  • September 10, 2025

    Verfied Review

    5 out of 5 patient rating

    He is very attentive to my health care needs. Explains in detail what’s good for me. He’s an excellent Doctor. I highly recommend him. Excellent customer service.

  • September 30, 2025

    Verfied Review

    5 out of 5 patient rating

    Very nice and explains everything well

  • September 16, 2025

    Verfied Review

    5 out of 5 patient rating

    Familiar with my case and knowledgeable in wide area of medicine.

  • September 11, 2025

    Verfied Review

    5 out of 5 patient rating

    Dr Vega takes the time to listen to you if you have any questions

  • August 28, 2025

    Verfied Review

    5 out of 5 patient rating

    He's super thorough and covers all my questions before I even get a chance to ask them. He has great dr. patient sence and a true feeling for his patients. I respect and admire him as a true professional, and am glad that he is my primary care doctor.

  • August 08, 2025

    Verfied Review

    5 out of 5 patient rating

    Only met him once but he was nice, interested and informative.

  • August 08, 2025

    Verfied Review

    5 out of 5 patient rating

    He truly cares about your health your well being & overall human side Ge explained everything about medication & treatment he's genuinely is interested & cars He comforts you.& puts you at ease with his tactful demeanor & he listens to you I would recommend him wholeheartedly 🙏

  • August 20, 2025

    Verfied Review

    5 out of 5 patient rating

    He is attentive, patient, explains his thoughts clearly, respectful, & appproachable.

  • August 02, 2025

    Verfied Review

    5 out of 5 patient rating

    Informative and great demeanor.

  • July 06, 2025

    Verfied Review

    4 out of 5 patient rating

    Because he is still new to me for a doc

  • July 22, 2025

    Verfied Review

    4 out of 5 patient rating

    He is new and getting to know him. I had another Doctor and she was always in a hurry. Normally, they used to listen to your heart, but she would check my chart and just say your blood work is fine, but never said what it was unless asked.

  • July 26, 2025

    Verfied Review

    5 out of 5 patient rating

    He is very good and helpful. Very knowledgeable and professional.

  • July 28, 2025

    Verfied Review

    5 out of 5 patient rating

    dr. vega is very knowlegbile and caring with me as a patient. i would recommend him to any of my friends.

  • July 16, 2025

    Verfied Review

    5 out of 5 patient rating

    Good Dr

  • July 26, 2025

    Verfied Review

    5 out of 5 patient rating

    He listens to your concerns and answers all of your questions.

  • July 31, 2025

    Verfied Review

    4.5 out of 5 patient rating

    Dr Vega is very professional and helpful with getting patients back on their feet. He listens to you and has a plan.

  • June 20, 2025

    Verfied Review

    5 out of 5 patient rating

    Dr Vega was very up front with everything took care of me very well

  • June 11, 2025

    Verfied Review

    5 out of 5 patient rating

    He has a pleasant personality and listens thoroughly to me. He is very informative and asks for my thoughts as needed. He provides good care for me.

  • June 20, 2025

    Verfied Review

    4 out of 5 patient rating

    Well because when I come in for a visit with him I never know which docter is going to see me instead of him but he s nice

  • May 14, 2025

    Verfied Review

    5 out of 5 patient rating

    Doctor Vega listens to my needs and provides me with education for my condition does not disregards my symptoms, Very caring doctor.

  • May 21, 2025

    Verfied Review

    5 out of 5 patient rating

    Dr. Vega is a good listener and he cares about you. He answer your questions. He is kind and courteous. He explains everything so you can understand it.

  • May 13, 2025

    Verfied Review

    5 out of 5 patient rating

    He is an excellent Doctor he’s courteous listens to my needs explains to me what’s best for me goes over all my medication’s my labs. He’s excellent he takes his time with me. Is what is the best doctors you have there at this clinic? I highly recommend him to my family and to my friends. [omitted]

  • May 31, 2025

    Verfied Review

    5 out of 5 patient rating

    Dr. Vega made me feel at ease

  • April 06, 2025

    Verfied Review

    4.5 out of 5 patient rating

    Dr Vega is very attentive and listens to everything I have to say with feedback. Dr. Vega has a great plan for my health.

  • April 01, 2025

    Verfied Review

    5 out of 5 patient rating

    He listens, answers questions appropriately. Patient with patient, courteous, nice, well dressed.

  • April 07, 2025

    Verfied Review

    5 out of 5 patient rating

    He is very kind and takes time to discuss the results of our lab work with us. Takes time to listen to us about our concerns. He makes sure we understand. He does not rush out the door. Very concerned about our health.

  • April 06, 2025

    Verfied Review

    5 out of 5 patient rating

    He's is caring careful he listens to the needs I had genuinely committed to my health & concerns good bedside manner quick & easy manner of conversation in my language both Spanish and English which made me feel safe and cared for I will recommend him wholeheartedly

  • April 19, 2025

    Verfied Review

    5 out of 5 patient rating

    He's attentive to your condition.

  • April 06, 2025

    Verfied Review

    1 out of 5 patient rating

    Never check my heart or lungs. No annual test requested. Comes in with Laptop only.

  • April 14, 2025

    Verfied Review

    5 out of 5 patient rating

    Courtesy, polite, professional, and very kind.

  • April 07, 2025

    Verfied Review

    5 out of 5 patient rating

    Because thats how I feel

  • April 09, 2025

    Verfied Review

    4.5 out of 5 patient rating

    He listens to you about your health problems

  • April 04, 2025

    Verfied Review

    3.5 out of 5 patient rating

    Being hard of hearing, I had difficulty understanding him because of his hard accent, even after I asked him to slow down with his speech, which he did. Understanding my primary physician is very important to me. I do not want to miss something he said because I was "hung up" on something he said previously. Since my last visit, I purchased better hearing aids,which should help a lot.

  • April 29, 2025

    Verfied Review

    5 out of 5 patient rating

    10

  • April 24, 2025

    Verfied Review

    5 out of 5 patient rating

    Dr. Vega is an outstanding physician. He has helped me far better than the primary care physician I had for 30 plus years. Dr. Vega will be my doctor for as long as possible for his attention to my medical needs. That being said, I have simple medical needs as a senior citizen and having Dr. Vega available is amazing. I am looking forward to the opportunity to have many years of the support of Dr. Vega. I want to add, WellMed is an outstanding group serving me. I feel very blessed to have Dr. Vega and WellMed supporting me. Nothing short of outstanding support.

  • April 03, 2025

    Verfied Review

    5 out of 5 patient rating

    Explains in detail Gives information Very knowledgeable caring and helpful Empathetic And really works hard to support patient and encourages follow ups and seeks a positive outcome

  • April 02, 2025

    Verfied Review

    5 out of 5 patient rating

    He answered my questions, explained everything

  • April 19, 2025

    Verfied Review

    5 out of 5 patient rating

    He’s seems very knowledgeable and answers all questions hey also friendly and doesn’t rush you

  • March 31, 2025

    Verfied Review

    5 out of 5 patient rating

    Made me feel comfortable and confident about my health and wellbeing

  • March 29, 2025

    Verfied Review

    5 out of 5 patient rating

    Very pleasant visit. He went over all facets of my health and labs and.was very thorough. I like him as my primary physician!

  • March 09, 2025

    Verfied Review

    5 out of 5 patient rating

    I can tell he is a very careing Dr. He listens to me and tells me what I need to know .

  • March 31, 2025

    Verfied Review

    5 out of 5 patient rating

    Because he goes over ur meds n health issues n ur well being

  • March 30, 2025

    Verfied Review

    5 out of 5 patient rating

    Excellent and very professional!

  • January 29, 2025

    Verfied Review

    5 out of 5 patient rating

    He is very respectful and you can talk to him and listen to you. with respect.

  • January 09, 2025

    Verfied Review

    5 out of 5 patient rating

    He is a very good listen to the patient and understanding doctor

  • January 01, 2025

    Verfied Review

    5 out of 5 patient rating

    He was understanding and attentive to my medical care.

  • January 24, 2025

    Verfied Review

    5 out of 5 patient rating

    This is a doctor who cares for you and you can tell. He takes my health seriously and I appreciate it. Also a big plus is he helped me understand my kidney disease and my sugar levels and diabetes. I truly like my doctor!!

  • January 22, 2025

    Verfied Review

    2 out of 5 patient rating

    He didn't like my criticism of the staff in having just my thyroid labs done rather than a full metabolic panel as needed or the fact that I was vocal in my statement that they had wasted my time as well as his by having to have labs done a second time. He had a nurse call me about my lab results to tell me that they looked OK instead of going over them with me. I was informed that I didn't need to come back for a year. I assume at this point that he doesn't really want me as a patient since both my wife and I had both been scheduled for Labs and follow up at 6 month intervals. At her appointment a week after mine she is still scheduled for 6 month follow-ups. At [omitted] years of age I feel that a one year follow up is not in the best interest of my health.

  • February 06, 2025

    Verfied Review

    4 out of 5 patient rating

    Friendly and respectful

  • February 05, 2025

    Verfied Review

    5 out of 5 patient rating

    Because he’s courteous, he listens he recommends and most of all he’s an outstanding doctor and blessed to have him as my doctor

  • February 14, 2025

    Verfied Review

    1 out of 5 patient rating

    He was dismissive in my requests of support. Rushed as if my time was not of importance. Said he was concerned of my blood work from 8 months ago, yet come back in 6 months doesn’t seem concerned

  • December 30, 2024

    Verfied Review

    4.5 out of 5 patient rating

    I have not been with him long enough

  • December 31, 2024

    Verfied Review

    3 out of 5 patient rating

    I feel that he is not doing enough annual tests plus he does not check my heartbeat, does not check my throat, does not do an annual physical, does not do EKG's, does not check my vitamin D level every 6 months, does not check my TSH levels every 3 months even though I am on thyroid meds. My previous doctor N H Shannon did all these tests without me reminding him. I also have to remind him for referrals for mammogram, bone density tests, referral for Prolia injections. I am an older patient that shouldn't have to keep up with my referrals are what tests I should have done.

  • December 05, 2024

    Verfied Review

    5 out of 5 patient rating

    He was very concerned about my health my blood pressure and diabetes. He increased the Metformin with his advice I'm doing much better.

  • November 23, 2024

    Verfied Review

    5 out of 5 patient rating

    He’s very attentive of everything I say I change from a different group and when I went back to Wellmed to my surprise, I received the best doctor that I have now which is Dr. Vega. He analyzes my medicine and make sure he changes whatever he has to, and I thank God for him

  • August 13, 2024

    Verfied Review

    5 out of 5 patient rating

    Very thorough and patient

  • October 29, 2024

    Verfied Review

    5 out of 5 patient rating

    Very knowledgeable

  • November 26, 2024

    Verfied Review

    5 out of 5 patient rating

    I love his personality friendliest manner and through explanation of everything

  • March 31, 2024

    Verfied Review

    1 out of 5 patient rating

    I only saw him once and can’t recommend someone I don’t know.

  • July 02, 2024

    Verfied Review

    4.5 out of 5 patient rating

    Dr Vega was very respectable and introduced himself and got to know me. He went over his medical plan and test he wanted to run. Liked that he was intrested in my healthcare.

  • August 13, 2024

    Verfied Review

    4.5 out of 5 patient rating

    I'm still getting know this Doctor my last Doctor retired in May and I had been with him and his clinic for over 60 years.

  • January 04, 2024

    Verfied Review

    5 out of 5 patient rating

    He was very nice and caring I really like him and would like to change to him

  • November 12, 2024

    Verfied Review

    4.5 out of 5 patient rating

    Dr Vega was very courtesy and wanted to get everything needed for my health care.

  • April 02, 2024

    Verfied Review

    5 out of 5 patient rating

    Very polite, knowledgeable and took the steps necessary to give resolution to my medical problems.

  • June 19, 2024

    Verfied Review

    5 out of 5 patient rating

    Dr. Vega is a good doctor and I am able to talk about my issues with him and there's no problem.

  • July 10, 2024

    Verfied Review

    5 out of 5 patient rating

    Very caring and professional

  • August 27, 2024

    Verfied Review

    5 out of 5 patient rating

    He is very professional and courteous. Thoroughly explains medications and procedures. He exudes a sense of trust and compassion.

  • April 26, 2024

    Verfied Review

    4.5 out of 5 patient rating

    He was friendly, curtious, he gives you his full attention and talks to you with respect. He gives you the feeling that he really wants to help you.

  • September 10, 2024

    Verfied Review

    5 out of 5 patient rating

    He's able to answer all my questions and give me the right medication for the illness at the time. Very patient understanding. He is truly to me What a real Doctor is supposed to be like. To this day I have not visited or talked to the Doctor that was assigned to me at my first visit in February

  • April 25, 2024

    Verfied Review

    2.5 out of 5 patient rating

    Still have not received my rx

  • August 16, 2024

    Verfied Review

    4 out of 5 patient rating

    Dr Vega is kind and knowledgeable for the first visit. I do not yet know him well.

  • May 02, 2024

    Verfied Review

    5 out of 5 patient rating

    He was not in a rushed. Seemed interested in what I had to say.

  • April 06, 2024

    Verfied Review

    5 out of 5 patient rating

    He made me fell confidence about hie assignment of my condition.

  • November 19, 2024

    Verfied Review

    5 out of 5 patient rating

    He was very patient and listened to all my concerns and addressed each one.

  • February 27, 2024

    Verfied Review

    5 out of 5 patient rating

    Dr. Vega Cartagena is very attentive to my questions and I feel he's really listening to me, very professional and nice.

  • October 15, 2024

    Verfied Review

    5 out of 5 patient rating

    When I first saw him he was very respectful gave me information I need it took care of me

  • August 12, 2024

    Verfied Review

    5 out of 5 patient rating

    Very professional and with honest answers and suggestions!

  • May 23, 2024

    Verfied Review

    5 out of 5 patient rating

    I LIKE THE WAY HE WORKS AND HE HAD A GREAT BED SIDE MANNER. TOOK HIS TIME TO FINE OUT MY NEEDS...AND WANTS

  • July 13, 2024

    Verfied Review

    5 out of 5 patient rating

    Young

  • January 03, 2024

    Verfied Review

    5 out of 5 patient rating

    Dr. Cartagena, is reactive, he seems interested in finding out a solution to my situation. I trust him and I already recommended him with a few friends. Very professional. He is bilingual and that's a plus for me.

  • November 01, 2024

    Verfied Review

    5 out of 5 patient rating

    Listens intensely and very responsive to your concerns/questions

  • February 05, 2024

    Verfied Review

    1 out of 5 patient rating

    He didn’t check to see if I was sick he didn’t even care he had someone with him and he saw me for like 2 minutes and said I was fine.

  • July 22, 2024

    Verfied Review

    5 out of 5 patient rating

    Listens well, had good communication skills, seems to always be in a good mood, and professional.

  • September 12, 2024

    Verfied Review

    5 out of 5 patient rating

    I had a visit with him on telephone

  • February 21, 2024

    Verfied Review

    5 out of 5 patient rating

    He listened to my chief complaint and was extremely knowledgeable a bout what was happening to me

  • March 05, 2024

    Verfied Review

    5 out of 5 patient rating

    He is very professional and very friendly very nice person

  • May 20, 2024

    Verfied Review

    5 out of 5 patient rating

    Well it was my first visit and it went good have nothing to complain about

  • September 12, 2024

    Verfied Review

    5 out of 5 patient rating

    He listened to my health issues and professional and gave me the exact treatment I needed.

  • July 02, 2024

    Verfied Review

    5 out of 5 patient rating

    Listens understand very polite

  • June 26, 2024

    Verfied Review

    2.5 out of 5 patient rating

    No comment

  • July 05, 2024

    Verfied Review

    5 out of 5 patient rating

    Dr Vega Cartagena was Very helpful and professional .

  • February 07, 2024

    Verfied Review

    5 out of 5 patient rating

    I was impressed with Dr. Cartagena's advice and knowledge about my health concerns and overall support.

  • July 30, 2024

    Verfied Review

    5 out of 5 patient rating

    He listened to my concerns

  • August 28, 2024

    Verfied Review

    5 out of 5 patient rating

    Very concerned about my health. He listened to me. .

  • April 02, 2024

    Verfied Review

    5 out of 5 patient rating

    Because he showed concern and took the time to address my condition.