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Internal Medicine in Johnson City

Little girl with blond hair with her mother at a doctor on consultation. Mother holding baby in her hands.

What We Do

Our mission is to deliver the highest level of wellness in the community through innovative and compassionate healthcare. We keep our patients the main priority by putting emphasis on human life and autonomy while delivering healthcare with compassion, integrity, and experience. We strive to help you live a happier and healthier lifestyle. We take pride in listening to our patients and spending extra time with each patient that you normally don't get in other offices. Our goal is to affect our region positively while delivering the highest quality of healthcare. In our state-of-the-art facility, you will find innovation, compassionate care, and individualized treatment plans. Keeping you and your family healthy is our main priority.

At Welltech Internal Medicine, we offer multiple different services including routine physicals, follow-up appointments, weight loss management, and telemedicine appointments. We now offer Aesthetic services to enhance your natural beauty and promote your self-confidence. Our Aesthetic services include wrinkle relaxers, fillers, skin care, hormone replacement, and chemical peels. WellTech strives to make it easy to access healthcare.

Our Services

We place importance on healthcare maintenance such as colon cancer screenings, cervical cancer screening, breast cancer screening, vaccines, and bone density scans.

We offer same day appointments, place referrals, and also see hospital follow ups within seven days. We take pride in returning your phone call within 24 hours if you have a question.













Our practice uses the latest technological advancements and latest evidence based guidelines to ensure your wellness. We also offer telemedicine appointments from the comfort of your home. We have built in electronic measures to ensure that you are up to date on your health maintenance. Regular visits with primary care practitioners are important to your family’s health.


WellTech goes above and beyond to show compassion for our patients. We like to get to know your background so we can better take care of you. Our provider is known for active listening and spending extra time with her patients. We want you leaving our office feeling well cared for and know that your health is important to us. Compassion improves treatment adherence and speeds healing for better patient outcomes.


Wellness is achieved through taking care of the mind, body, and spirit. Our mission is to make you happy and healthy. We take care of the whole patient to ensure they have all the tools they need to achieve wellness. We work with you on treatments plans including pharmacological and non-pharmacological treatments. Welltech Internal Medicine ensures you know all the options for treatment.

What Our Patients Say:

If you’re looking for a provider who is willing to take extra time with you, explain your plan of care, and that’s extremely knowledgeable, look no further, Leslie is that provider. You can always count on her to call you back and answer all your healthcare questions and concerns. She even has a heart of gold and will always go the extra mile for her patients. Leslie is such a blessing to so many people and to all of her patients. When it comes to medical conditions and prescriptions, Leslie, always clearly explains all the symptoms and side effects. I am looking forward to my visits at the new office.

- Jill R.

If you’re looking for the best in healthcare in the Tri-Cities area, look no further than WellTech Internal Medicine! Leslie Sullins is the most compassionate and loving person you will ever meet! She will take her time with you and make sure you are well taken care of. I have known Leslie for many years and this is truly her calling. She wants nothing more than to help people.

- Carrie E.

My family & I are very excited for this new practice! Leslie is an amazing nurse practitioner who really cares about the well being of me and my family! At this practice you will meet people who will show compassion, be caring, hardworking, and most of all love toward all their patients.

- Randi C.

Meet Our Provider

Leslie Sullins, FNP-C is dedicated to her patients at WellTech. She believes in taking care of the whole patient and is known for her active listening. She takes extra time with the patient to ensure all healthcare goals are met. She graduated from King University and resides in Bristol, TN. She likes the small town feel of this area and treats her patients like family. On her days off she enjoys spending time with family, learning new skills, and traveling. She is board certified through American Association of Nurse Practitioners. She looks forward to meeting you and aims to help you achieve health and happiness. She has extensive training in hospital medicine and internal medicine. She has had training from physicians across the United States while working in a Level 1 Trauma Center. She stays current on evidence based guidelines and stays active in Affiliations such as American Association of Nurse Practitioners and Northeast TN Nurse Practitioners Association. She is also a member of Sigma Theta Tau- Honor Society of Nursing.