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Our Team of Doctors

Our incredible doctors aren’t only handpicked for their skill, but for their off-the-charts empathy.

The team of doctors at Medici aren't your ordinary doctors. They often use the power of collaboration to help you achieve the best results as a patient. Between appointments, you’ll often catch them on calls with each other discussing how to best address an individual patient’s specific needs. They truly love their patients and are given the time and resources to care for them.

“It’s everything I need in one place & the care providers truly listen. That’s rare to find in healthcare.”

– Medici Member

Primary Care Team

Primary Care Doctor

Dr. Melendez

Specialty: Family Medicine
American Board Of Family Medicine
Location: Texas
LA license no: 333281
Licensed in: TX, IN, AL, NC, NJ, GA, LA, KY, OK, FL, TN, OH, SC, VA, WA, CT.

Dr. Deb Melendez loves life and strives to appreciate every stage of it. She sees life as a gift but recognizes that it can often take great effort to achieve one’s goals. Over the last 17 years of medical practice, she has worked in a variety of settings mostly taking care of adults and geriatric patients with chronic diseases. After working with many frail and disabled patients who likely could have had a more fruitful life experience, she started focusing more on evidence-based prevention and wellness for herself and her patients. She is excited to share the knowledge and motivate her patients to proactively choose daily healthy habits that will result in robust longevity.

Dr. Melendez is a board-certified family medicine physician. She began her medical career attaining honors in Biology at Wellesley College, before earning her medical degree from Baylor College of Medicine in Houston, TX. She completed her internship at the Conroe Medical Education Foundation program and finished her residency at The Methodist Hospital in Houston in 2007. Dr. Melendez has worked in solo practice, private group practice, and large federally-funded health centers. She is skilled at managing complex patients with acute and chronic problems.

“I look forward to partnering as you chart your path to long-term wellness.”

Care Concierge


Primary Care Doctor

Dr. Yan

Specialty: Family Medicine
American Board Of Family Medicine
Location: Alabama
Licensed in: TX, CA, CT, FL, GA, KY, MN, SD, TN, UT, WA.

Dr. Sida Yan served on the front lines in Urgent Care during the pandemic, working 12-hour shifts in crisis conditions, all with a baby at home. Her husband built a UV light sanitizing cupboard in their garage for her to use at the end of each shift. Sida carries this same sacrificial commitment as a Medici Primary Care Doctor. Her empathy, love and experience make her a doctor like no other.

“I am profoundly committed to the health and happiness of my patients.”

Dr. Yan is a board-certified family medicine physician. She attended St. Louis University School of Medicine in her hometown of St. Louis, Missouri. After medical school, she joined her husband in San Antonio, where he was stationed as an active-duty Air Force officer. Sida completed her family medicine residency at UT

Health San Antonio and continues to enjoy practicing evidence-based medicine specifically tailored to each of her patient’s needs.

Primary Care Doctor

Dr. Lin

Dr. Lin Lin, MD
Specialty: Internal Medicine
American Board Of Internal Medicine
Location: Texas
LA License no: 325989
Licensed in: TX, AL, OK, MS, GA, LA, OH, MD, KY, PA, NJ, TN, IL.

Dr. Lin is a board-certified internal medicine physician. She began her medical career as a premed student at Washington University in St. Louis, obtaining a B.A. degree in biology with a minor in biophysics. She graduated from the University of Minnesota Medical School, Twin Cities before training at Summa Health Systems in Akron, Ohio, in their internal medicine program. She then completed a fellowship in hospice and palliative medicine at the University of Texas Health Science Center in San Antonio, Texas during which she treasured multidisciplinary teamwork, including nursing, psychology, social work, chaplaincy, in caring for the patient as a whole person. Soon after graduating, she realized her passion was primary care and now she loves working with a multidisciplinary team in caring for adult patients (age 18+) across the spectrum of age, disease, and disease complexity. She supports her patients in adopting healthy lifestyle habits to prevent chronic disease and looks forward to caring for you.

Specialty Care Team

Registered Dietician

Marimar Torres Mattei

Marimar Torres Mattei, MS, RDN, LDN
Location: Puerto Rico
Licensed in: AK, AL, AR, CT, DC, DE, FL, GA, IA, ID, IL, KS, KY, LA, MA, MD, NM, NY, NC, OH, OK, OR, PA, PR, SC, TN, TX, WA, WV

Marimar is a seasoned dietitian with over 8 years of experience, empowering individuals to achieve their health goals through personalized nutrition counseling. Licensed in 28 states and bilingual in English and Spanish, she has worked with diverse populations, from pediatrics to adults, helping them uncover their inner motivation to make lasting changes. With expertise in motivational interviewing and evidence-based practices, she creates a supportive environment for her clients to thrive. Her passion for nutrition and science drives her to stay up-to-date with the latest research, ensuring her clients receive cutting-edge guidance. Holding a Master of Science in Human Nutrition and Functional Medicine, she possesses a deep understanding of the intricate relationships between nutrition, lifestyle, and optimal well-being.

Throughout her career, she has gained extensive experience in managing chronic diseases, including but not limited to Diabetes, Chronic kidney disease and dialysis, Cardiovascular disease, Bariatric surgery, and Gastrointestinal diseases. She has helped numerous clients navigate complex health conditions by empowering to make sustainable nutritional changes to improve their overall health and quality of life. She takes pride in witnessing her clients' transformations and celebrating their successes.

Clinical Psychiatrist

Dr. Thomas

Dr. Tina Thomas, MD, MRCPsych.
Specialty: Psychiatry
American Board Of Psychiatry and Neurology
Member of the Royal College of Psychiatrists, UK
Location: Texas
LA license no: 335628
Licensed in: TX, KY, LA, OK, TN, OH, IN, FL, NC

Meet Dr. Thomas, a highly compassionate and well-trained Board-certified psychiatrist who is dedicated to mental health. Dr. Thomas's heart is particularly drawn to the underserved, including the incarcerated and homeless populations. She has contributed to publications and presentations on issues affecting minorities, women, and mental health within religious contexts. Driven by a strong belief in the effectiveness of collaborative care, particularly within primary care settings, Dr. Thomas sees this as a pivotal solution to address mental health challenges in America.
Originally from London, UK, she completed her general psychiatry training and is a proud member of the Royal College of Psychiatrists, UK. Dr. Thomas further honed her expertise through an ACGME accredited psychiatry residency at one of the largest medical centers in the USA, The Texas Medical Center, while training at UT Health, Houston.
Throughout her career, Dr. Thomas has been recognized for her dedication to excellence, earning national awards from the American Psychiatric Association. Her goal is to leverage her varied experiences across two continents to promote mental wellness in all her patients. She brings leadership skills, quality clinical care, and research expertise together in her mission to serve communities in need.
Join her on this journey toward holistic well-being and compassionate care.


Marisela Castillo

Marisela Castillo, LPC #87075
Location: Idaho
Licensed in: TX, ID, IN, OH, NC.
Credentials: Idaho LCPC: 8213, Texas LPC: 87075, Ohio LPCC: E.2404094, North
Carolina LCMHC: 19790, Indiana LMHC: 39004807A

Marisela holds a Masters of Education in Rehabilitation Counseling & Human Services and a Bachelors in Psychology and Sociology from the University of Idaho. Marisela is trained in Eye Movement Desensitization and Reprocessing Therapy (EMDR), Trauma-Focused-Cognitive Behavioral Therapy (TF-CBT), Dialectical Behavioral Therapy (DBT), and participates in ongoing trainings and conferences related to the effects of trauma and other significant mental health care needs.
Theoretical Orientation and Approach: Marisela practices from a holistic approach incorporating mindfulness and body awareness; along with working from a Trauma Theory lens focusing on psychoeducation to understand and treat the effects of trauma. Marisela also uses Attachment Theory, Cognitive Behavioral Therapy, and strength based techniques.


Dr. Smiley

Aaron Smiley, DVM
Specialty: Veterinary Medicine
Location: Indiana

Dr. Aaron Smiley is a distinguished veterinarian who is passionate about animals and their caretakers. He obtained his Doctorate in Veterinary Medicine from the University of Illinois and practices small animal medicine in Anderson, Indiana.

Beyond his clinical practice, Dr. Smiley holds the position of Chief of Staff Advisor at over 25 VetCor clinics throughout the Midwest where he provides professional leadership. He is also a founding member of the Veterinary Virtual Care Association and has been influential in promoting telemedicine and technological advancements in veterinary medicine. He even designed a virtual care course for the University of Illinois iLearning Center.

Dr. Smiley had the honor of being the President of the Indiana Veterinary Medical Association. During his tenure, Dr. Smiley played a crucial role in helping the profession navigate the COVID-19 emergency and helped ensure animal owners maintained access to veterinary care through collaboration with government officials.

He is a highly sought-after national speaker within the veterinary field and also serves on the Board of the Veterinary Nursing Program at Purdue University College of Veterinary Medicine.


Dr. Haggermaker

Carly Haggermaker, DPT
Location: Florida
LA license no: 11424R
Licensed in: TX, FL, GA, NC, OH, OK, LA, MD, IN, AL, CA, TN, VA, KY, MS

Carly initially became a physical therapist because of her love of anatomy and drive to help others. She has now grown a passion for patient education and believes introducing simple movement into your daily routine can drastically improve your quality of life. She believes that the exercise world can be an overwhelming and intimidating place. Her goal is to provide a place for patients to feel comfortable asking questions, practicing exercises, and growing their own knowledge in order to sustain the improvements made from their physical therapy sessions. As a mother to two young children, she understands that time can be limited and is able to construct intentional and efficient exercise programs to maximize outcomes.

Carly completed her Bachelors in Health Science at the University of Dayton and her Doctorate of Physical Therapy at Mount St. Joseph University. She started her career in the outpatient orthopedic and neurological setting, but later joined her husband in Florida where he works as an active duty Air Force member. There, she gained experience in the sub-acute and acute care settings which included a multitude of diagnoses and wound-care treatments. She has dedicated almost 6 years to her field and is thrilled to continue changing health care for the better with Medici.

Your PCP has access to a huge group of sub-specialists that they can contact directly on your behalf. No additional appointment necessary.

Dr. Valentine

Shyla Valentine, MD
Specialty: Cardiology
Location: Texas
Licensed in: TX, KY, FL, TN

Before diving into Cardiology, Dr. Valentine began her career as a successful pharmacist. When her father unexpectedly passed away from a heart attack at 58, she felt called to make a change. She sold her pharmacy and went to medical school, never forgetting her dad’s words that she had the ability, and the heart, to become a doctor. Her personal story led her to craft a safe and loving environment for her patients, knowing that each is screened and cared for with the utmost consideration.

Dr. Valentine's area of specialization is adult cardiology and she has received professional recognition including Texas Super Doctors and is the author of Why Most Women Die - How Women Can Fight Their #1 Killer: Heart Disease. Further, she has received several awards including Senior Award for Excellence in Internal Medicine and Community Named one of Best Doctors in Texas every year since 2002. Dr. Valentine is a frequent media guest and public speaker for prestigious channels such as Newsmax and One America News. She is also a member of esteemed professional societies such as American College of Cardiology, Texas Medical Association and Dallas County Medical Society.

Lifestyle Medicine

Dr. Eisele-Flint

Monica Eisele-Flint, MD
Specialty: Internal Medicine
Location: Texas
American Board Of Internal Medicine
Licensed in: TX, KY, GA, TN, OH, IN

Expert Second Opinions

Orthopedic Surgeon

Dr. Brian Cole

Dr. Brian Cole is a nationally acclaimed orthopedic surgeon, specializing in sports medicine and serves as the team physician for a number of teams including the Chicago Bulls, Chicago White Sox and DePaul University.

In 2009, he was selected as NBA Team Physician of the Year. Orthopedics This Week has named Dr. Cole as one of the top 20 sports medicine, knee and shoulder specialists repeatedly over the last 5 years as selected by his peers, and Dr. Cole’s awards range from the “Best Doctors in America” since 2004 and “Top Doctor” in Chicagoland since 2003.

Chief, Department of Radiation Oncology

Dr. Haas Hogan

Dr. Haas-Kogan received her medical degree from the University of California at San Francisco (UCSF) in 1991. She completed a research fellowship, followed by a residency in radiation oncology at the UCSF Helen Diller Family Comprehensive Cancer Center (HDFCCC).

She spent 18 years as a radiation oncologist, researcher, and academic leader in the UCSF HDFCCC system before becoming Chair of the Department of Radiation Oncology at Dana-Farber Cancer Institute, Brigham and Women’s Hospital, and Boston Children’s Hospital in 2015.

Dr. H is renowned for the treatment of cancers of the central nervous system and brain tumors.

Our partnership with 2nd.MD grants you access to expert second opinions from the best doctors around the world. Through 2nd.MD you receive a comprehensive second opinion and your Medici care team will guide you through the process.


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