Biography

Marissa Charles, DO, grew up in a small, medically underserved community. She saw firsthand the difficulties patients face when they lack access to quality care. She is committed to providing her patients with the medical services they need to thrive.

Dr. Charles specializes in geriatric medicine and enjoys helping older adults resolve health concerns and improve their well-being. She is proud to help patients live longer and enjoy additional time with their families. She also assists Spanish-speaking patients and those who face challenges communicating with their providers. Her goal is to give each patient the dignity and respect they deserve.

Dr. Charles attended the University of North Texas College of Osteopathic Medicine and completed her residency at CHRISTUS Spohn Hospital-Memorial in Corpus Christi, Texas. She is board-certified by the American Board of Family Medicine. A lifelong resident of Texas, Dr. Charles was born in Zapata. Today, she lives in San Antonio with her family. In her free time, she enjoys reading fantasy novels and walking with her daughters and poodle, Rory.

Clinical interests

Diabetes
Family medicine
Geriatrics
High blood pressure
Migraines
Obesity
Thyroid disease

Locations

Office Hours
Sunday Closed
Monday 8 a.m. to 5 p.m.
Tuesday 8 a.m. to 5 p.m.
Wednesday 8 a.m. to 5 p.m.
Thursday 8 a.m. to 5 p.m.
Friday 8 a.m. to 5 p.m.
Saturday Closed

Education and credentials

Board certifications
American Board of Family Medicine
Fellowship
Christus Spohn Memorial Medical Center
Internship
Corpus Christi Family Medicine Residency Program
Medical school
Univ of North Texas College of Osteopathic Medicine
Intern/residency
Christus Spohn Memorial Medical Center

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 (9331419)
Amerigroup (02742943)
BCBS (8975NM)
Superior Health (See payor website)
UnitedHealthcare (0138300016)

Patient Reviews

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106 Results

  • January 30, 2026

    Verfied Review

    5 out of 5 patient rating

    Always pleasant, knowledgeable, and thorough

  • January 07, 2026

    Verfied Review

    5 out of 5 patient rating

    She been the only doctor that sat down & talk to .me ,explain my Labs .Even asked me if I needed anything. Glad she's my doctor

  • January 03, 2026

    Verfied Review

    5 out of 5 patient rating

    I Absolutely Love Dr.Marissa Charles on point every time

  • December 09, 2025

    Verfied Review

    5 out of 5 patient rating

    She is very empathetic and professional

  • December 02, 2025

    Verfied Review

    5 out of 5 patient rating

    She's meets my needs in every way

  • November 05, 2025

    Verfied Review

    5 out of 5 patient rating

    She is very thorough and takes time to cover all concerns. Patient-centered.

  • November 11, 2025

    Verfied Review

    5 out of 5 patient rating

    She has been my Dr for many years and I love and appreciate her very much. She is very kind, understanding and patient with me. She has been the best Dr I have ever had.

  • November 07, 2025

    Verfied Review

    5 out of 5 patient rating

    She is very caring and listen to all my issues. If I don't understand something she makes sure I walk out satisfy .

  • November 19, 2025

    Verfied Review

    5 out of 5 patient rating

    She's friendly, competent and thorough.

  • October 01, 2025

    Verfied Review

    5 out of 5 patient rating

    She is a very good Dr., listens and explains very well.

  • October 22, 2025

    Verfied Review

    5 out of 5 patient rating

    Caring and knowledgeable and friendly and professional

  • October 01, 2025

    Verfied Review

    4.5 out of 5 patient rating

    UNDERSTANDING DR

  • September 06, 2025

    Verfied Review

    5 out of 5 patient rating

    She make sure all my medication is okay. If my pressure is high she have it recheck before I leave. She also ask me to drink more water. And ask me if I have any questions for her.

  • September 20, 2025

    Verfied Review

    5 out of 5 patient rating

    Dr. Charles had reviewed my file and recent blood work prior to my visit and she was very clear with her expectation for my mammogram. I felt as if she at least could answer my questions without telling me to make another appointment.

  • September 24, 2025

    Verfied Review

    5 out of 5 patient rating

    She is considerate and listens to me. She has good suggestions about my health concerns and makes referrals in a timely manner. I like her. She is friendly and knowable.

  • August 23, 2025

    Verfied Review

    5 out of 5 patient rating

    She is Great

  • August 18, 2025

    Verfied Review

    5 out of 5 patient rating

    She is well informed and helpful.

  • August 12, 2025

    Verfied Review

    5 out of 5 patient rating

    She is very understanding and takes all the time necessary to explain to me my situation and what can be done

  • August 20, 2025

    Verfied Review

    5 out of 5 patient rating

    Great dr

  • August 12, 2025

    Verfied Review

    5 out of 5 patient rating

    Very attentive, caring and listens to your concerns.

  • July 12, 2025

    Verfied Review

    5 out of 5 patient rating

    I’ve been seeing Dr Charles for many years and never has she been rude and always is very concerned about medical problems I have. She’s very knowledgeable . Dr Charles makes me feel like she cares.

  • July 26, 2025

    Verfied Review

    5 out of 5 patient rating

    She listens to any problem you are having and resolves it.

  • July 25, 2025

    Verfied Review

    3 out of 5 patient rating

    I get to see her most of the time when I have appointments.

  • July 30, 2025

    Verfied Review

    5 out of 5 patient rating

    I believe doctor charles is a very informative ,professional, she takes the time to show that she really cares .

  • July 05, 2025

    Verfied Review

    5 out of 5 patient rating

    THE WAY SHE SPEAKS & EXPLAINS THINGS

  • July 22, 2025

    Verfied Review

    3 out of 5 patient rating

    DR CHARLES IS A FABULOUS, CARING AND THOUGHTFUL PHYSICIAN NOW SHE HAS BEEN PROMOTED AND ONLY SPENDS TWO DAYS A WEEK AT INGRAM SHE BARELY HAS TIME FOR HER REGULAR PATIENTS RECOMMENDING HER TO NEW PATIENTS WOULD BE FRUITLESS.

  • May 25, 2025

    Verfied Review

    5 out of 5 patient rating

    She's very nice n she listens to ur problems about ur pain .I listen to her n my glucose went down I'm very happy with her as my dr.

  • May 09, 2025

    Verfied Review

    5 out of 5 patient rating

    Friendly , informative

  • May 08, 2025

    Verfied Review

    5 out of 5 patient rating

    Dr Charles was very knowledgeable She took her time with me Listen well Overall she was great

  • April 26, 2025

    Verfied Review

    5 out of 5 patient rating

    She is very professional and kind

  • April 24, 2025

    Verfied Review

    5 out of 5 patient rating

    Dr Charles has been my Dr from the beginning. Going on six years I think and I love her and really don't want to see any other Dr. She understands me and my needs and respects my wishes. I am just sad that outside of yearly appointments, as happened this year, she is so busy that when I wanted to see her in March, I was told I couldn't get an appointment with her until August. Fortunately my annual appointment was in three weeks and was able to see her then.

  • April 28, 2025

    Verfied Review

    5 out of 5 patient rating

    Due to her listening to my medical needs, explaining clearly and understanding

  • April 26, 2025

    Verfied Review

    5 out of 5 patient rating

    She's verry kind

  • April 01, 2025

    Verfied Review

    5 out of 5 patient rating

    Very knowledgeable and respectful. Capable of discussion at a higher level.

  • April 16, 2025

    Verfied Review

    5 out of 5 patient rating

    Because I have respect for her , she always listen to me and gives me good advice

  • April 08, 2025

    Verfied Review

    5 out of 5 patient rating

    Cause Doctors are very good in treating patients.

  • April 12, 2025

    Verfied Review

    5 out of 5 patient rating

    I have referred my spouse and my elderly mother in-law.

  • April 07, 2025

    Verfied Review

    5 out of 5 patient rating

    She listens. She tries to find solutions to the concerns I have. She is knowledgeable and up to date on the information she provides. She took some time with me which makes me think she cares about me and her patients.

  • April 01, 2025

    Verfied Review

    5 out of 5 patient rating

    Dr Charles has always listened to all of my physical needs and provided the best means to have them met. She is very professional at her job and does it with excellence

  • April 03, 2025

    Verfied Review

    5 out of 5 patient rating

    She is an excellent Doctor.

  • April 29, 2025

    Verfied Review

    5 out of 5 patient rating

    Dr charles is always friendly , patient, personable and professional!

  • April 09, 2025

    Verfied Review

    5 out of 5 patient rating

    Good listener. Knowledgeable answers questions

  • April 18, 2025

    Verfied Review

    5 out of 5 patient rating

    She take her time and listens to you. She is not like other doctors that just just go in 2 mins and they are out.She will sit there and talk to you to see what is happening. So yes. I would recommend someone to her.

  • April 01, 2025

    Verfied Review

    5 out of 5 patient rating

    Bedside manner is unmatched. Concerns were addressed without being pandering.

  • April 30, 2025

    Verfied Review

    5 out of 5 patient rating

    She's kind, smart, and thorough.

  • March 31, 2025

    Verfied Review

    5 out of 5 patient rating

    As stated earlier,she was professional,attentive and addressed my concerns plus answering my questions in aa easy to understand manner.

  • March 30, 2025

    Verfied Review

    5 out of 5 patient rating

    Always listens to my concerns, provides and recommends required medication, vitamins, or specialists to improve my health.

  • March 31, 2025

    Verfied Review

    5 out of 5 patient rating

    She listens to what I am experiencing

  • March 31, 2025

    Verfied Review

    5 out of 5 patient rating

    Dr Charles explains and listens to me. She is professional and caring.

  • March 29, 2025

    Verfied Review

    5 out of 5 patient rating

    Great job

  • March 29, 2025

    Verfied Review

    5 out of 5 patient rating

    She listens to my concerns and gives me information about them. She carefully reviews test results and medications and asks questions about any side effects. She is always cheerful and professional.

  • March 31, 2025

    Verfied Review

    5 out of 5 patient rating

    Very attentive and listened and was not rushed during visit.

  • January 25, 2025

    Verfied Review

    5 out of 5 patient rating

    Because she is a good doctor. Very empathetic to my medical situation. Really makes herself available to see her

  • January 29, 2025

    Verfied Review

    5 out of 5 patient rating

    She is the epitome of what a Dr. Should be. I never feel rushed and always feel like she truly cares about my well being.

  • January 27, 2025

    Verfied Review

    5 out of 5 patient rating

    She is very nice , listens and explains everything very well

  • January 10, 2025

    Verfied Review

    4 out of 5 patient rating

    I like her compassion

  • February 03, 2025

    Verfied Review

    5 out of 5 patient rating

    She's got a wonderful chairside manner, she's courteous, kind, and listens to me

  • February 05, 2025

    Verfied Review

    5 out of 5 patient rating

    She’s a very caring person

  • February 03, 2025

    Verfied Review

    5 out of 5 patient rating

    Professional, friendly, caring, knowledgeable

  • February 06, 2025

    Verfied Review

    5 out of 5 patient rating

    Best Dr I’ve had explains everything very well to the best of my abilities she is and excellent Dr always listen to what is wrong with me and takes care of the problem right away I have friends that go with her and are also very satisfied the best WELL MED DR THEY HAVE DR MARISSA CHARLES THANK YOU WELL MED

  • February 11, 2025

    Verfied Review

    5 out of 5 patient rating

    She is very thorough during my visit.

  • February 04, 2025

    Verfied Review

    5 out of 5 patient rating

    She was goid

  • February 17, 2025

    Verfied Review

    5 out of 5 patient rating

    I’ve been a patient of Dr Charles for many years and I’ve been so happy with her that I have recommended my family to her.

  • December 04, 2024

    Verfied Review

    5 out of 5 patient rating

    Nice person &made me feel comfortable. Nice bed side manner. Explained everything to me

  • December 04, 2024

    Verfied Review

    4.5 out of 5 patient rating

    Very attentive, listened to all my concerns, very well at explaining what l need to do to better for my well being.

  • December 30, 2024

    Verfied Review

    5 out of 5 patient rating

    Very thorough in answering all questions in easy to understand language.

  • May 08, 2024

    Verfied Review

    5 out of 5 patient rating

    She's friendly, competent, and attentive.

  • August 01, 2024

    Verfied Review

    5 out of 5 patient rating

    She is caring and listens. She asks medical questions pertaining to my health history that help her understand my medical needs. She explains all the questions that I ask as her patient. I feel very secure with her as my PCP.

  • February 03, 2024

    Verfied Review

    5 out of 5 patient rating

    Listened to my concerns and was able to take care of my issues

  • August 22, 2024

    Verfied Review

    5 out of 5 patient rating

    I Absolutely Love Dr. Charles. The Best Dr. I Ever Had & Very Professional at What She Does for All Her Patients.

  • October 17, 2024

    Verfied Review

    5 out of 5 patient rating

    GREAT DOCTOR & KEEP ME INFORM ! ! !

  • April 02, 2024

    Verfied Review

    5 out of 5 patient rating

    Took her time to listen to all of my issues and concerns. She also took her time explaining things to me.

  • August 28, 2024

    Verfied Review

    5 out of 5 patient rating

    I believe that Dr. Charles seems very knowledgeable, thoughtful, caring, and is very easy to understand while she is explaining either my medication‘s or my situation.

  • April 18, 2024

    Verfied Review

    5 out of 5 patient rating

    Excellent Provider. Very patient centric.

  • May 22, 2024

    Verfied Review

    5 out of 5 patient rating

    Informative n courteous

  • October 29, 2024

    Verfied Review

    4.5 out of 5 patient rating

    I really like Dr.Charles but I just wish she could spend more time with me because I always have questions for her and 15 or 20 minutes is not long enough for me to ask her my questions 😊

  • July 24, 2024

    Verfied Review

    5 out of 5 patient rating

    She gives me good advice-and I really like her- she’s been my doctor for a long time

  • June 04, 2024

    Verfied Review

    5 out of 5 patient rating

    professional, kind and knowledgeable

  • May 21, 2024

    Verfied Review

    5 out of 5 patient rating

    Dr Charles is very knowledgeable and thorough. She is straight forward and explained everything so I understood. Until I met with her, I had been to the clinic three times before and saw someone different everytime. After meeting with Dr Matin, I was not satisfied as she didn't offer any advice or even recommend any type of things that would help me. I was seriously considering finding a different doctor's office. But then I met with Dr Charles and I was very happy with her. She made me feel important and cares about her patients..

  • September 30, 2024

    Verfied Review

    5 out of 5 patient rating

    She's been the BEST DOCTOR I have everhad.Very Caring ,attentive takes her time to sit down w me.Explains my blood work & how my over all health is.Im Bless that she's My DOCTOR

  • August 14, 2024

    Verfied Review

    5 out of 5 patient rating

    She's very thorough, doesn't rush and has an amazing bedside manner.

  • February 10, 2024

    Verfied Review

    5 out of 5 patient rating

    She's very thorough

  • October 15, 2024

    Verfied Review

    5 out of 5 patient rating

    See first written statement at beginning.

  • May 22, 2024

    Verfied Review

    5 out of 5 patient rating

    She explained different ways of caring for my needs

  • August 06, 2024

    Verfied Review

    5 out of 5 patient rating

    She listens to her patients and gives her patients information that can help them. Dr. Charles always asks if there are any questions about the information that was given.

  • January 24, 2024

    Verfied Review

    5 out of 5 patient rating

    Charles is very knowledgeable and very atentive caring.

  • January 08, 2024

    Verfied Review

    5 out of 5 patient rating

    Very knowledge. Very professional. Well informed me of everything I went to the clinic for

  • August 13, 2024

    Verfied Review

    5 out of 5 patient rating

    Dr Charles care about her patients and does an extremely good job plus I like her.

  • November 23, 2024

    Verfied Review

    5 out of 5 patient rating

    She is very thorough and displays a caring attitude.

  • May 10, 2024

    Verfied Review

    5 out of 5 patient rating

    She's is a very good doctor she listens to you n if u have a problem she is there to always help u .She has kept me in very great health.

  • January 03, 2024

    Verfied Review

    5 out of 5 patient rating

    X

  • June 06, 2024

    Verfied Review

    5 out of 5 patient rating

    She has been my Dr for years and she is very caring, understanding and taken excellent care of me. I wouldn't want another Dr as I have all ready stated.

  • February 15, 2024

    Verfied Review

    5 out of 5 patient rating

    Dr. Charles has always been very good to explain things to me and takes her time and always makes me feel comfortable.

  • January 24, 2024

    Verfied Review

    5 out of 5 patient rating

    Dr. Charles has taken care of me and advised me for the seven years she has been my Doctor. I am impressed with her knowledge and advice all this time.

  • January 04, 2024

    Verfied Review

    4 out of 5 patient rating

    She was not sure about my condition.

  • May 07, 2024

    Verfied Review

    5 out of 5 patient rating

    I just love Dr Charles she is very thorough and patient and has a wonderful bedside manner and of course very professional

  • April 22, 2024

    Verfied Review

    5 out of 5 patient rating

    Dr. Marissa Charles explain's everything to you, I can always call her and she calls back. She's generous and kind person.

  • August 19, 2024

    Verfied Review

    5 out of 5 patient rating

    Dr Charles.is a caring Dr.i have recommended her to 4 of my friends. Thank you Dr. Charles

  • January 03, 2024

    Verfied Review

    4 out of 5 patient rating

    She didn’t rush in and out

  • February 16, 2024

    Verfied Review

    5 out of 5 patient rating

    Very patient and caring provider that will take all the time needed to address all and any concerns.

  • January 16, 2024

    Verfied Review

    4 out of 5 patient rating

    Please fill out FMLA paperwork in a timely manner we know it's below you but needed for us little guys to keep our jobs....it's done this way every year...

  • January 25, 2024

    Verfied Review

    5 out of 5 patient rating

    Dr charles is very much concerned and I’m very thorough she shows she cares for her patients

  • October 16, 2024

    Verfied Review

    5 out of 5 patient rating

    Professional, friendly,answers

  • April 03, 2024

    Verfied Review

    5 out of 5 patient rating

    courtasey,respect,concern for me

  • February 07, 2024

    Verfied Review

    5 out of 5 patient rating

    She very thoughtful and considerate of my need. Very knowledgeable and professional.

  • July 18, 2024

    Verfied Review

    5 out of 5 patient rating

    Marissa Charles is a doctor who cares and listens.