Meet Dr. Dere

Helping people understand their health, reduce cardiometabolic risk, and live with purpose.

Helping people understand their health, reduce cardiometabolic risk, and live with purpose.

Helping people understand their health, reduce cardiometabolic risk, and live with purpose.

Dereje Tefera Siyum, MD, MSHI, DipABOM — founder of WellifyCare Medical S.C.

Image of doctor dere

From Ethiopia to Wisconsin

From Ethiopia to Wisconsin

Dr. Dere earned his medical degree from Addis Ababa University School of Medicine, in Addis Ababa, Ethiopia. After serving patients in Ethiopia, including in rural communities, he continued his training in the United States and completed his internal medicine residency at Aurora Health Care in Milwaukee.

His journey from Ethiopia to Wisconsin shaped his belief that meaningful care must honor each person’s story, culture, risks, and goals—a belief that now guides WellifyCare Medical’s mission to help people understand their bodies, protect their health, and live with purpose.

Dr. Dere earned his medical degree from Addis Ababa University School of Medicine, in Addis Ababa, Ethiopia. After serving patients in Ethiopia, including in rural communities, he continued his training in the United States and completed his internal medicine residency at Aurora Health Care in Milwaukee.

His journey from Ethiopia to Wisconsin shaped his belief that meaningful care must honor each person’s story, culture, risks, and goals—a belief that now guides WellifyCare Medical’s mission to help people understand their bodies, protect their health, and live with purpose.

Why WellifyCare Medical Exists

Why WellifyCare Medical Exists

Why WellifyCare Medical Exists

Dr. Dere has practiced medicine for more than a decade in Ethiopia and the United States. He has cared for people across different communities, healthcare systems, and stages of illness—from early warning signs and long-term conditions such as diabetes and high blood pressure to serious complications requiring hospital care.

Over time, two things became clear.

Modern medicine is remarkably effective at treating disease once it becomes serious. Yet opportunities to act earlier are still too often missed because care can be fragmented across different settings and related health concerns are not always addressed together.

WellifyCare Medical was built to help close that gap. It is a physician-led specialty practice focused on diabetes care, weight care, and cardiometabolic risk reduction. Rather than treating each concern in isolation, the practice brings together internal medicine, obesity medicine, lifestyle-focused care, and evidence-based medication in one coordinated approach.

Every plan begins with understanding the whole person—their medical history, biology, daily life, risks, and goals—and turning that understanding into practical next steps they can sustain. The purpose is not simply better numbers, but more years of good health and purposeful living.

Dr. Dere has practiced medicine for more than a decade in Ethiopia and the United States. He has cared for people across different communities, healthcare systems, and stages of illness—from early warning signs and long-term conditions such as diabetes and high blood pressure to serious complications requiring hospital care.

Over time, two things became clear.

Modern medicine is remarkably effective at treating disease once it becomes serious. Yet opportunities to act earlier are still too often missed because care can be fragmented across different settings and related health concerns are not always addressed together.

WellifyCare Medical was built to help close that gap. It is a physician-led specialty practice focused on diabetes care, weight care, and cardiometabolic risk reduction. Rather than treating each concern in isolation, the practice brings together internal medicine, obesity medicine, lifestyle-focused care, and evidence-based medication in one coordinated approach.

Every plan begins with understanding the whole person—their medical history, biology, daily life, risks, and goals—and turning that understanding into practical next steps they can sustain. The purpose is not simply better numbers, but more years of good health and purposeful living.

People are better able to protect their health when they understand what is happening, have a plan that fits their life, and receive support before risk becomes a crisis.

People are better able to protect their health when they understand what is happening, have a plan that fits their life, and receive support before risk becomes a crisis.

People are better able to protect their health when they understand what is happening, have a plan that fits their life, and receive support before risk becomes a crisis.

— Dr. Dere

Medical Technology in Service of Better Care

Medical Technology in Service of Better Care

Medical Technology in Service of Better Care

Dr. Dere earned a Master of Science in Health Informatics from Boston University. That training shaped how he thinks about care—not only what happens during a visit, but how care is designed, delivered, and sustained during the weeks and months between visits.

At WellifyCare Medical, technology has one purpose: to make good care easier to reach and easier to continue. Telehealth can reduce travel and scheduling barriers, while secure communication and planned follow-up can help patients stay connected between visits.

When clinically appropriate, information from home may become part of the care plan—including weight, blood pressure, glucose or CGM data, activity, and sleep.

One clinic reading is a single moment. Information collected over time can reveal patterns, support earlier decisions, and help the plan adapt as a patient’s needs change.

Technology should never replace the relationship between a patient and physician. It should extend it.


Dr. Dere earned a Master of Science in Health Informatics from Boston University. That training shaped how he thinks about care—not only what happens during a visit, but how care is designed, delivered, and sustained during the weeks and months between visits.

At WellifyCare Medical, technology has one purpose: to make good care easier to reach and easier to continue. Telehealth can reduce travel and scheduling barriers, while secure communication and planned follow-up can help patients stay connected between visits.

When clinically appropriate, information from home may become part of the care plan—including weight, blood pressure, glucose or CGM data, activity, and sleep.

One clinic reading is a single moment. Information collected over time can reveal patterns, support earlier decisions, and help the plan adapt as a patient’s needs change.

Technology should never replace the relationship between a patient and physician. It should extend it.


Credentials

Credentials

Credentials

Internal Medicine

Board Certified — American Board of Internal Medicine

Obesity Medicine

Diplomate, American Board of Obesity Medicine (DipABOM)

Health Informatics

Master of Science in Health Informatics — Boston University

Medical Education

Doctor of Medicine — Addis Ababa School of Medicine

Beyond the clinic

Beyond the clinic

Beyond the clinic

Outside the clinic, Dr. Dere is a husband, father, educator, and active member of the Ethiopian American community. His faith shapes both his life and his practice: serve first, offer care with compassion, and treat health as a gift worth caring for.

Outside the clinic, Dr. Dere is a husband, father, educator, and active member of the Ethiopian American community. His faith shapes both his life and his practice: serve first, offer care with compassion, and treat health as a gift worth caring for.

“I believe we are fearfully and wonderfully made. Caring for our health is not about pursuing perfection—it is an act of stewardship that helps us love, serve, and live with purpose.”

“I believe we are fearfully and wonderfully made. Caring for our health is not about pursuing perfection—it is an act of stewardship that helps us love, serve, and live with purpose.”

“I believe we are fearfully and wonderfully made. Caring for our health is not about pursuing perfection—it is an act of stewardship that helps us love, serve, and live with purpose.”

— Dr. Dere

WellifyCare Medical Interior design photo

Start by understanding where you are.

Your first step is a comprehensive cardiometabolic medical evaluation with Dr. Dere.

Schedule Your Initial Evaluation

WellifyCare Medical Interior design photo

Start by understanding where you are.

Your first step is a comprehensive cardiometabolic medical evaluation with Dr. Dere.

Schedule Your Initial Evaluation

WellifyCare Medical Interior design photo

Start by understanding where you are.

Your first step is a comprehensive cardiometabolic medical evaluation with Dr. Dere.

Schedule Your Initial Evaluation

WellifyCare Medical S.C.

Know Your Body. Protect Your Health. Live With Purpose.

Contact Us

(262) 261-8880

18200 W. Capitol Drive, Suite 200 Brookfield, WI 53045

Medical and Emergency Disclaimer

WellifyCare Medical S.C. does not provide emergency services. This website and its messaging channels are not monitored for medical emergencies. If you believe you are experiencing a medical emergency, call 911 or go to the nearest emergency department.

Information on this website is provided for general educational purposes and is not a substitute for individualized medical advice, diagnosis, or treatment. Using this website, submitting a form, or requesting an appointment does not by itself establish a physician-patient relationship. Care recommendations and outcomes vary by individual.

Telehealth services are available only when the treating clinician is licensed or otherwise legally authorized to practice in the state where the patient is physically located at the time of the visit. An in-person evaluation may be required when clinically appropriate or legally required.

WellifyCare Medical S.C.

Know Your Body. Protect Your Health. Live With Purpose.

Contact Us

(262) 261-8880

18200 W. Capitol Drive, Suite 200 Brookfield, WI 53045

© 2026 WellifyCare Medical S.C. All rights reserved.

Medical and Emergency Disclaimer

WellifyCare Medical S.C. does not provide emergency services. This website and its messaging channels are not monitored for medical emergencies. If you believe you are experiencing a medical emergency, call 911 or go to the nearest emergency department.

Information on this website is provided for general educational purposes and is not a substitute for individualized medical advice, diagnosis, or treatment. Using this website, submitting a form, or requesting an appointment does not by itself establish a physician-patient relationship. Care recommendations and outcomes vary by individual.

Telehealth services are available only when the treating clinician is licensed or otherwise legally authorized to practice in the state where the patient is physically located at the time of the visit. An in-person evaluation may be required when clinically appropriate or legally required.

WellifyCare Medical S.C.

Know Your Body. Protect Your Health. Live With Purpose.

Contact Us

(262) 261-8880

18200 W. Capitol Drive, Suite 200 Brookfield, WI 53045

Medical and Emergency Disclaimer

WellifyCare Medical S.C. does not provide emergency services. This website and its messaging channels are not monitored for medical emergencies. If you believe you are experiencing a medical emergency, call 911 or go to the nearest emergency department.

Information on this website is provided for general educational purposes and is not a substitute for individualized medical advice, diagnosis, or treatment. Using this website, submitting a form, or requesting an appointment does not by itself establish a physician-patient relationship. Care recommendations and outcomes vary by individual.

Telehealth services are available only when the treating clinician is licensed or otherwise legally authorized to practice in the state where the patient is physically located at the time of the visit. An in-person evaluation may be required when clinically appropriate or legally required.