About Us

Our Core Focus
Assessing and preventing chronic disease is Lifesigns' core focus. We make every effort to identify emerging health risks and protect future health. Our testing is thorough and our effort to prevent catastrophic events and to educate is our number one priority.

Peace of Mind

Lifesigns takes pride in new state-of-the-art equipment and quick adaptation to patient needs. Our providers review and discuss their findings and outline a health strategy if needed. Patients receive a personalized summary, including a thorough but easy-to-understand overview of each test and the provider's recommendations.

Many patients leave our office with peace of mind that their health indicators are typical. Other patients are grateful their visit showed early signs of emerging or severe health risks that our team could address without delay.

The Clinic

Established in 1992, Lifesigns is a patient-centered facility dedicated to comprehensive physical exams and critical follow-up care. Over 27 years, Lifesigns has provided over 400,000 health and wellness exams to patients in the Memphis community.

We provide a comfortable environment with aesthetic features that include a waterfall centerpiece and art throughout the clinic. For patients fasting, we offer an array of snacks, fruit, and beverages.

The Prevention Group

Under the umbrella of The Prevention Group ("TPG"), Lifesigns has inspired two sister companies, HealthyHere and MealMD. HealthyHere is a mobile version of Lifesigns performing ultrasound-guided physicals at the employer's worksite. MealMD is a physician designed weight loss program which delivers chef-prepared meals and an evidence-based curriculum. TPG also manages wellness incentives and on-site clinics for companies wanting a full-time worksite clinic.

Click Here to learn about HealthyHere
Click Here to learn about MealMD

Lifesigns Definition of Comprehensive

Our services you may not find at a typical doctor's office


We take pride in having state-of-the-art equipment, including a new 3D/tomo mammography upgraded Ultrasound machines.

  • Thyroid Ultrasound
  • Abdominal Ultrasound
  • Mammography
  • Gynecological Exam
  • General Health Panel
  • Prostate-Specific Antigen

Heart & Lung

Multiple tests are preformed to make sure your heart and lungs are healthy and working properly. If we find a concerning result, we send a referral to a cardiologist.

  • Treadmill Stress Test
  • Resting EKG
  • Chest X-ray
  • Carotid Arteries Ultrasound
  • Pulmonary Function


With the multitude of comprehensive tests performed in one visit, physicals can take 2-3 hours to complete.

  • Hearing Exam
  • DEXA Scan
  • Abdominal Organ Ultrasound
  • Various Lab Panels
  • Hemoglobin A1c
  • STD/HIV (on request)

Meet the Providers

Felix Caldwell, MD
Dr. Caldwell is a native Memphian and graduated Cum Laude from Vanderbilt University and received his medical degree from The University of Tennessee Health Science - Chattanooga. Dr. Caldwell is Board Certified in Internal Medicine and a fellow in the American College of Physicians. Following medical school, he served as Lt. Commander in the United States Naval Reserve with an Honorable Discharge. He enjoys gardening, hiking, going to movies, taking care of his three dogs and aquarium. Dr. Caldwell has practiced medicine for almost 40 years and has worked for Lifesigns since 2006.
Todd Robinson, MD, Ph.D.
A native Memphian, Dr. Robinson graduated from the University of Tennessee, where he simultaneously earned his M.D. and Ph.D. degrees. After studying Endocrinology at the National Institutes of Health, he decided to join the United States Navy. After a tour of duty as a flight surgeon on U.S. Aircraft carriers, Dr. Robinson moved back to Memphis and returned to a practicing physician. Early in his career, Dr. Robinson discovered a passion for documentary film making. He has produced and directed films that have aired nationally on PBS and received critical praise at several prestigious film festivals. He lives in downtown Memphis with his wife, Ashley, and their daughter, Gabrielle. Dr. Robinson has worked for Lifesigns since 2007.
Clay Carruth, NP
Clay Carruth lives in Memphis, TN. Clay attended the University of Tennessee in Knoxville and graduated from the University of Memphis with his Masters in Nursing. Clay enjoys spending time with his wife and baby, being outside, and watching UT football.
Holly Fuller, NP
Holly is originally from North Carolina and received her M.S. in Nursing from Graceland University in Iowa. Before Lifesigns, Holly worked in urgent care, emergency medicine, and cardiology. She enjoys getting to know her patients and building a relationship with them. Her hobbies include volunteering at the Humane Society and the Streetdog Foundation, traveling, and spending time with her daughter, Claire. Holly has worked for Lifesigns since 2017.
Lauren Cunningham, NP
Lauren is a graduate of the University of Tennessee, Knoxville, where she obtained her Bachelor of Science in Nursing. She then moved back to Memphis to marry her high school sweetheart and started working as an RN at Le Bonheur Children's hospital. Since becoming an NP, Lauren has worked in a primary care setting. In her spare time, she enjoys running, playing tennis, cheering on the Vols, and spending time with her husband and their two children. Lauren has worked at Lifesigns since 2019.
Tanya Wilson (Clinical Lead)
Tanya has more than 20 years of experience in health care as a Certified Medical Assistant and X-ray Technician. She went into the medical field because she's always had a passion for helping others. Born in Bruce, MS, Tanya married her high school sweetheart and has two children, Ashlee, who's in nursing school, and Blake, who's in pipe fitting school. She enjoys gardening, cooking, pickleball, and spending time with her family and friends. Tanya has worked for Lifesigns since 2004.

Health Improvement Programs

Weight Loss

10-week program: Management and prevention of chronic disease through healthy weight loss with a strong focus on nutrition and daily physical activity.

Blood Pressure

6-week program: Provide diet and physical activity recommendations, participants can log their BP readings. The provider will review the participant's abnormal readings.

Diabetes Management

6-week program: Information and recommendations for glucose monitoring, nutrition, and physical activity. Participants are encouraged to log weekly fasting glucose scores.

Tobacco Use

5-week program: Review of the health harms and cost associated with tobacco consumption and encourage participants to quit with support from our coach along the way.

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1727 Kirby Parkway,
Suite 100
Memphis, TN 38120

Contact Information

Phone: 901-685-5520
Fax: 901-685-0782
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