Meet Our Team

Meet Timothy Graham, MD “Tim”

Diabetes Specialist

I grew up in Akron, OH, close to Cleveland and also spent some time in Columbus, OH in my younger years. 

While a professor at Harvard (Boston), I was recruited by the University of Utah to establish a new Diabetes research and clinical unit focusing on the biology of fat.  My laboratory was trying to answer the question:  “Why does being overweight cause diabetes and diabetic complications like heart disease and stroke?”  We made a lot of progress in this area, but there is still much to learn.

I grew up with a parent (my dad) who was seriously impaired by diabetes.  I felt helpless watching diabetes wreak havoc on his life.  Even though I couldn’t help him, I wanted to do something to help other people in his situation.  While diabetes itself is sometimes hard to prevent, we are really good at preventing diabetic complications. I focus a lot of my effort on helping my patients reduce the risk of diabetic complications (like eye, kidney, nerve, and foot problems, and vascular disease like heart attacks and stroke).  My dad developed all of these problems in his lifetime as a person with diabetes.  My dad was overweight, and I was an overweight kid, so addressing the challenges of being overweight is also important to me.

My favorite color is green: forest green bordering on teal to be specific.   We made sure to include that color in our clinic logo! My favorite meal is a bad answer for a doctor… but… pepperoni pizza with jalapeños.  Now you know I am honest.

My favorite vacation spot is Lake George, NY or Marco Island, FL – it’s a toss-up!

My favorite movie is … well there are too many to choose just one. I enjoy movies, podcasts, and audible books.

My wife turned me into a Utes fan but I still love to watch Ohio State. I’m also a Cleveland Browns fan (please no laughing).  With no college football this year,  I’ll be taking more hikes with my dog… and wife, when I can convince her to join me! at least until the snow flies, and then we’ll be skiing!

Founding and opening DETS is something I have wanted for a long time. I am committed to creating something better for my patients, and not just duplicating the same old thing in Diabetes care, which frankly hadn’t been working very well for patients over the decades. You can count on me to bring you the latest and best approaches to treatment, a “listening ear”, an “I’m on your side” attitude, and a cooperative approach to finding a plan that will work for your lifestyle and needs. This is what you can count on from me as your Diabetes Specialist.  Tim

Dr. Amnon Schlegel, MD, PhD. 

I grew up in Roslyn Heights, on Long Island, in New York. I moved here for work from San Francisco in 2010. I enjoy the outdoor activities Utah has to offer.

After graduation from university, I attended Albert Einstein College of Medicine (Bronx, New York) earning my MD and Ph.D. in 2002. I was an Internal Medicine resident physician at Beth Israel Deaconess Medical Center (Boston, Massachusetts), where I first met Dr. Graham. I completed adult Endocrinology fellowship training at the University of California San Francisco (UCSF, San Francisco, California). I remained on the faculty of UCSF for three years before being recruited to the University of Utah to run a research laboratory focused on glucose and fat metabolism. My laboratory identified how the liver exports ketone bodies during fasting, and we explored how the intestine handles absorbed fat. I'm proud of the students and junior colleagues who worked in my National Institutes of Health and American Heart Association-funded work and have gone off to exciting careers.

I established a broad base of patients at both the University of Utah Diabetes and Endocrinology Clinic and the George E. Wahlen Salt Lake City VA Hospital, where I was heavily involved in the clinical training of medical students and medical physician residents and fellows. 

I continue my role at DETS as one of the key clinical lipid experts in Utah and in the Western United States.  I am proud that the research advances I have made continue to translate into cutting-edge, personalized care for our patients.

Why practice Endocrinology? I take the stoic philosophical approach to this question: diabetes and endocrinology need excellence in diagnosis, treatment, and compassion, and I strive to deliver these. Doing a good job is its own reward.

A little more about me personally. I like color combinations: purple and brown, blue and yellow, grey and pink, green and white. I treasure every meal with my family whether it is home-cooked or we venture out and explore a new restaurant. Although Covid 19 has changed a few of our vacation plans, traveling with my family is something I look forward to whether it’s a short trip to Southern Utah to ride mountain bikes or back to NY to see friends and family. My favoite movie is Doctor Zhivago.

I bleed red. My alma mater is Hofstra University (Hempstead, New York), and Division I basketball was big (0-4 at the big tournament over the years). My local pro basketball team (New York Knicks) is deep in the rearview mirror: I support the Jazz now. I like unusual team sports: bicycle racing and Formula One car racing. Utah has turned me into a Snowboarding (advanced) and skiing (permanent beginner) enthusiast with the BEST SNOW on Earth. 

I am thrilled to be joining Team DETS. To my new patients, you can count on me to listen carefully. Your goals, hopes, fears, and worries will always come first in our march toward your improved health. I support the DETS mission to focus on wellness, not illness.

Meet Tannen Ellis-Graham

CEO/Founder & Dr. Graham's better half.

Tannen is an unusual name.  People who know me sometimes call me Tan, TanTan or just T; I've also been mistakenly called “Shannon" and even “Cannon". I prefer Tannen, but I will answer to almost anything.

I was born in Savannah, GA, in an Army tent. I was there until we moved to Utah when I was almost 5 yrs old. So, yes, I still say “Y'all” and “Fixing", and have even been known to say, “Are Y’all fixing to go somewhere". I attended school here in Utah, then took off to live and work in Oklahoma City, OK, and Charlotte, NC.  It's a long story – ask me sometime.  I've been back in Utah for decades now.

Why start DETS? This clinic is Tim's dream (Dr. Graham), and I am committed to creating a clinic that focuses on wellness, not illness. We are a good tag-team. He covers the medical side, and I cover the operations.

First, I am a Gemini, so I always have 2 or more answers. My favorite color right now is Orange but our company Teal is a close second. Tim's said it matches my eyes. I have a few favorite meals. First, Tim is an excellent cook, so I am a little partial to his cooking. Sushi, pasta, and ramen like Singapore noodles are neck and neck for my favorite foods, depending on the day.

I love Marco Island, FL, and the stone crab claws with mustard sauce they serve there.  Heck, I  like anywhere with a beach. The silly thing is I never go “into” the water. Not the swimming pool, lake, or ocean. I will hang-out alongside it or in a boat, but I never go into the water. [Is this TMI?]

I’m a huge sports fan, mostly football, and basketball. I love and support the Utes. I even turned Tim into a fan. I am an avid Dallas Cowboys fan and support Tim’s Browns (unless they are playing the Cowboys!).

When you see me at DETS, please say “hello” – I may not be a medical service provider, but I keep all the key systems working that enable our team to ensure you the best possible visit.   Tannen 

Laura Burton, Family Nurse Practitioner-Board Certified (FNP-BC), Master of Science in Nursing (MSN), Certified Diabetes Care and Education Specialist (CDCES)

I grew up in Taylorsville, Utah, and love everything Utah has to offer.

My family moved from New Hampshire to Utah when I was young.  We moved in an old Desoto station wagon, and I remember some of the trips.

Diabetes care is meaningful to me both professionally and personally.  I had a cousin that had type 1 diabetes, diagnosed when she was 10 years old.  I was born on her 15th birthday which facilitated a strong bond between us.  As a small child, I was always fascinated and intrigued watching, and of course, helping her with her diabetes care.  I was obsessed with the chemistry set that was used to test her glucose levels. My mom had latent autoimmune diabetes of the adult (LADA).  I also have type 2 diabetes which started as gestational diabetes. 

My favorite colors are sea-green and magenta and my favorite meal is anything with Lobster.

My favorite vacation spots are  Puerto Penasco, Mexico, and San Diego, California. Walking the trails in Utah is a close second.  

My favorite actress is Meryl Streep. I am not a sports enthusiast, but if I were to pick a team, I would pick the Jazz.  If asked I bleed red for the Utes. When I worked at the U you couldn’t not support the Utes! 

My favorite outdoor activities are anything with water, like swimming or boating, the best is being by or on the ocean.  I enjoy riding my electric bike. I also like to play pickleball.

I have a strong conviction that my patients and I are partners in their diabetes journey.  I support, guide, and take them under my “wing"; I cheer them on throughout their diabetes care.

Marissa Garrett

Marissa and Honey

Meet Marissa Garett (Missa, but only close friends call me that), MA/Scribe 

I grew up in Southern  California, I followed my now ex-husband up here and fell in love with the State and I love my career as an MA. 

Diabetes is close to my heart. It is something my family deals with daily since my son was diagnosed at age 3. I have managed to change a scary diagnosis into my life's work and passion. 

My Favorite Color is Green and my favorite meal is warm french bread and cheese (not technically a meal, but nothing is better than warm bread) anywhere near the ocean. 

I don't watch a lot of movies, but I will read anything by Sara J Mass or Ken Follett.  

I’m happy to say I now bleed RED!! Go Utes! I am so sad that football season is canceled at school this year. I was really looking forward to that. I am a huge football fan. My favorite NFL team is the New England Patriots!!! (She and Dr. Graham have a lot to talk about if the NFL has a season this year)

I like water sports but honestly, I would rather float down a river or hang out by the water with a book and a drink. 

Has a patient of DETS, you can be assured I know how hard maintaining a sense of normalcy with diabetes can be. A diabetic can do anything or be anything. It is not a death sentence or a curse, but an opportunity to rise above a challenge and become stronger. 

Thanks, So excited to meet everyone and start this new adventure, Marissa 

Meet Stephanie Rezac, RD, CDCES

Registered Dietitian and Certified Diabetes Care & Education Specialist (formerly known as CDE – certified diabetes educator)

I grew up in Las Vegas, NV but I moved to Utah in 2018 to be with my boyfriend, now, husband. YES, I just got married – before starting at DETS during a Pandemic…

I genuinely love my job! I am passionate about helping others and look forward to every opportunity to share my knowledge and expertise with people living with diabetes. There are always new things to learn within the realm of diabetes –therapies, products, research, technologies, etc. It is exciting to share the latest and greatest discoveries with both patients and the multidisciplinary health care team.

If you must know I love everything black everything! You will catch me wearing black more often than not. My favorite meal…I am a self-proclaimed connoisseur of food and beverage. However, if I had to pick one dish to label as a favorite, it would have to be eggplant parmesan.

My favorite vacation took place in England, but I also love visiting the Pacific Northwest here in the states and my favorite movie is “Man on Fire.”

Our household is not a Utes fan or a BYU fan…because we are (NHL) Vegas Golden Knights fans!!! GO KNIGHTS GO!!! I am learning to golf… You can spot my husband and I at various golf courses around the valley – him with the stripe show and me usually giving up after nine holes. We also love taking our beloved pit bull ‘Taz’ on night walks.

As a patient of DETS, you can count on me to support you throughout your diabetes journey – for both major milestones and everyday events. As research, medicine, and technology evolve, I look forward to being your core source of evidence-based diabetes information. Additionally, I am proud to serve as your healthcare partner, friend, and confidant. Your health and wellbeing are my #1 priority – always!

Thanks, Stephanie

Meet Taylor Freestone, MA/Scribe

My name is Taylor but most people call me Tay. I am a certified medical assistant (CMA).

I grew up in Orem, Utah and have lived in Utah my entire life. 

The reason I do what I do is because I have always been fascinated in the medical field ever since I was a little girl. I love helping and caring for people. Being in the medical field, I can always advance in my career and learn more knowledge about so many different things which I love. I have always wanted to do something in my career that is challenging, interesting, and that makes a difference in someone's life and that is why I do what I do. 

My favorite color is green (like a forest green) and my favorite meal is any type of breakfast food or a good pasta dish with garlic bread. Before COVID my favorite vacation spot was DisneyLand or Disney World (big Disney fan) or just going to a nice beach and relaxing. After COVID, in the canyon for some camping. 

My favorite movie star is Blake Lively, Sandra Bullock, or Will Smith. My dad might disown me if I say anything other than BYU. I prefer to watch Basketball or Baseball. My favorite baseball team is the Angels and my favorite basketball team is the Jazz. I love hiking, biking, long-boarding, going on walks, and camping. 

 As a caregiver at DETS, you can count on me to give you the best care possible and make you a priority. I will make it a comfortable environment where you can feel free to express your concerns and know that your needs will be met. 

See you Soon – Taylor

Meet Alexandra H. Phlebotomist 

I grew up with my extended family and a few dogs. I love being a phlebotomist! It's using your very fine motor skills to get veins also labs are an essential part of diagnoses for patients. 

My favorite colors are blue, green, and purple.

I love Sushi, and I drink tons of water. 

My favorite vacation spots are London or California. During coronavirus, I have only traveled to my backyard.  

Auntie Mame is my favorite movie but I do a lot more reading than watching movies. My favorite genre is science fiction. 

I’m a huge Utes fan, so I Bleed red. I'm more of an indoor gardener but I like outdoor gardening as well. 

The one thing patients at DETS can count on from me is the fact I know no one enjoys getting poked by a needle but I'll be as gentle, quick, and professional as possible. ~ Alexandra 

Meet Gina Colosimo, PSR (Patient Service Rep)

Some people call me G, and no one ever gets my last name right the first time. I’ve also been called G-Colo, but feel Gina is best.

I was born in Utah and grew up in Draper. I am lucky to have a large family here, with 20+ cousins of all ages and stages of life. I graduated from Juan Diego Catholic High School with Honors and am attending the University of Utah. I just started my Senior year. 

I want to help where I am needed so I joined Team DETS. The hours work great with my college schedule. Yellow is my favorite color and there is nothing better than a Fried egg with avocado.  

Hawaii is my happy place. The sun, surf, and beach always make me happy. My favorite movie is Remember the Titans.

Of course, I bleed red! #GOUTES – I’m sure going to miss Football this year. I enjoy running or jumping on the trampoline with my little brother. I will always have a positive attitude and willingness to help. I’m looking forward to checking you in at DETS. Gina

Meet Laura Gonzalez

Meet Trinity White, Front Desk

Hello, My name is Trinity but most people call me Trin! I Grew up in Lehi, UT.  I have lived all over Utah county but I usually say I’m from Lehi because that is where I went to high school and where my family currently lives. For now, I currently live in Millcreek and I love living in Salt Lake county. I am from Hesperia which is in Southern California but moved to Utah when I was 6 years old and have lived here ever since. 

My goal with working at DETS is to get a really solid understanding of the Medical world and the Administration side of medicine. I was also interested in learning more about Diabetes due to my family history. My younger brother was diagnosed with Type 1 Diabetes at the age of 3,  and ever since then, I have wanted to get a better understanding of how Diabetes works and how to manage it. 

My Favorite color is Orange! I love how it can be a bright and loud color and then transition to a color that can be soft and pretty like the sunset. My favorite food would be for sure thanksgiving food! I have always been a sucker for Mash Potatoes and Stuffing. My favorite Drink is probably Coca-Cola, it’s my ride-or-die drink of choice! My favorite Vacation spot is probably Disneyland and I swear it has been since before I could even remember. To me, it will always be the happiest place on earth. A close second though is Crescent City California for the Beautiful hikes and the fishing! 

My favorite Movie is Megamind! Will Ferrell does such a good job at voice acting Megamind! This movie has everything! Love and Romance, Comedy, Action, and Cool music! When it comes to sports I don’t really watch any. I did compete in sports in Highschool like Swim-team and Volleyball. My family on the other hand loves football, my mom is a New England Patriots fan and my Grandmother is a Seattle Seahawks Fan. 

My favorite Outdoor activity is probably going paddle boarding or tubing down a river! I have always loved water activities and it’s an awesome way to keep cool during the summertime!

As a member of Team DETS, you can always count on me to listen to our patients and help them communicate with our staff and providers to make sure they feel heard and accepted! 

Meet Whitney Peterson, MA

My name is Whitney; I prefer Whit; I like everyone to call me that; I’ve adopted it as my real name, haha (: as for nicknames, I've got a million lol Dimm, Tink, Wittenburg, Spit… the list goes on, but Whit is best.

I grew up in Draper. My Dad moved us out here from Oregon when I was very young because he wanted us to know our grandparents in case they died young as he did. 

I have lots of whys for working here at DETS. My father is a T1 Diabetic. Growing up, he had never learned how to handle his diabetes, and he never seemed to have much control over it. It felt like our whole family experienced it all with him. 

He suffered from a DKA, Comas, secondary issues like OSA, and a stroke. One year he had cataract surgery that wouldn't heal thanks to his diabetes. It was tough to grow up with a dad who was constantly teetering with death (by the time I was 18, I'd said goodbye to him 4 or 5 times, fully expecting he was going to die each time.) He finally took control of his diabetes. 

Still, he is now living with the consequences of not being proactive with his care. I can't blame him entirely because when he was diagnosed at 12 back in 1978, he described his doctor's view of the diagnosis as a death sentence. I am passionate about helping other people with this diagnosis, not have the same experience my father had and realize that they can still live a long healthy life.

 On the lighter side, my favorite color is Pink.  I don’t know that I have a favorite meal, I went plant-based about a year ago, and I will openly break it for pizza with real cheese. I try not to, but it's probably safe to say that pizza (even the vegan kind) is a fave. Fave drink is water, or wine, or apple juice, hahaha!

I've been to lots of much more excellent places, but I never seem to get tired of Hawaii (the big island). I don't watch many movies because I tend to talk too much and move around too much, but I love Hitch and The Great Gatsby. Movie stars are not my thing, and I don't know many of their names.

I'm a die-hard Ute! I LOVE football and don't care for other sports. I like to skateboard (how lame is it for a 23-year-old girl to the skatepark?) My favorite stress reliever is going on walks. I took up biking last spring and can't wait to continue once it gets warm again!

You can count on me to genuinely care and make my best effort to help you enjoy the best and most healthy life you can with diabetes or thyroid disorders. I have personal connections to how this affects people; I even have hypothyroidism myself. I want people to live the highest quality of life they can! 



Lexie Sorensen, MA

I grew up in Aurora, UT! I lived in the same house until I was 18!

I am passionate about all things healthcare.  

Having been a patient myself (Type 1 Diabetic), I know how important it is to have a well-educated, enthusiastic & passionate team helping you feel your best! Chronic illnesses are no joke and all of us who struggle could use a few more people in our corner. 

My goal is to become a diabetes educator and then on to NP school to work in endocrinology.  I am also passionate about mental health and love supporting patients and helping them bridge the gap between mental health and physical health. 

I am PINK obsessed. It's my happy color and has been for years. I love breakfast food! My mom's waffles are my absolute favorite, with a Diet Coke of course. 

My favorite vacation spot is Lake Tahoe! It is absolutely BEAUTIFUL! 

My favorite movie is Footloose! I love the old one and the new one! 

Total Utah fan! 

My favorite outdoor activity is feeding ducks haha! I love to go sit by a pond and bring them some treats! I also love Pickleball! 

As a member of the DETS team, you can always count on me treating you like a PERSON! Our patients aren't illnesses or symptoms, they are people! I love sharing the tips and tricks I've learned over the last ten years as well as book and TED talk recommendations! 



Erica Canttieri, MA

Hello, my name is Erica and I am a Certified Medical Assistant (CMA) I don't have any nicknames that I go by since my name is already short on its own.

I’m Utah-born and raised but more specifically in Layton, Utah. I have always wanted to work in the medical field since I can remember. I have been a Medical Assistant for 17 years and pursuing my goal to become a Registered Nurse. I am curious about everything related to medicine and I am eager to learn and grow as medicine is always changing.

My Favorite Color is Blue (not BYU Blue, just blue). I love a really good Veggie Burger. Pre Covid I would say Brazil is one of my favorite places to visit, that is where my in-laws are from and there are some areas that are not tourists spots that are some of the most beautiful beaches on earth. Post Covid I haven't traveled because well Covid happened.

I don't have a favorite movie star or movie but I love Horror films and Forensic shows (yes I am that weirdo). I am definitely a UTES fan but I grew up in a BYU fan home, so we usually don't discuss this topic, it's safer that way! 🙂

I love paddleboarding, I am a lover of outdoor activities during the warm days but I do not like being in the cold snow. I am not sure how I have lived in Utah my whole life.

As a patient of DETS, you can count on me to be the person who truly wants the best for the patient. I am a strong believer in being a patient advocate. I have had bad experiences personally as a patient myself and that gives me more motivation to take care of the person as a whole and not just as a patient or a number. I have learned that the most important person in any patient’s medical team or treatment plan is the patient.

Jessica Glenn, MA

I was born and raised in Mexico. After I graduated from Medical School I visited my brother who lives here, I fell in love with the city and decided it is a great place to pursue my career and for my son to flourish.  Therefore joining the DETS team has been such a positive experience for me. 

At a young age, I decided I wanted to help people find the root of their pain or illness and heal them. I grew up watching my mom, who is an amazing nurse, she taught me to listen and treat each patient as a family member. As a result, I find joy in focusing on wellness, not the illness.   

My favorite color is turquoise, there is a huge palette, varying from very light blueish to truly radiant purplish or lively greenish. I have a sweet tooth and have taken traditional recipes into healthy delicious desserts (I love cooking). I enjoy all kinds of food, especially Mexican food.  I have a lot of favorite places, there are so many beautiful spots around the world. I love exploring all the beaches down the Mexican coast (I attribute this to my Dad because he used to take me and my brother for surfing trips and now I share that with my son), especially those that are known for the whale migration and the massive arrival of sea turtles. And of course Disneyland! My favorite movie star is Adam Sandler, he is super talented, funny, genuine, and kind. I adore going on walks with my son in the nature, parks, and gardens that Salt Lake offers.

As a patient at DETS,  you can count on me to help you throughout your care and comfort you along the way! You are not alone in this journey. We are a team

Lisa, Phalbotomest

Meet Bella Bomber – DETS support puppy.

I am a Shih Tzu – a toy-sized dog breed developed in Tibet. Registry: ACA. My favorite colors are Cream and White. I'm hypoallergenic, so no one has to worry about being allergic to me.

I was born on Sept 3rd, 2020. I found a forever home on November 13th, 2020, with Tannen and Dr. Tim and fellow fur baby Rudy. He's a mini Aussie.

My job is to bring joy and love to Team DETS and the patients when needed. I love meeting new people, especially ones who bring me treats or play fetch with me. I love to play fetch.

I'm still potty training and learning not to chew on everything I can get my mouth on.

They say I am a good addition to Team DETS – please say hello when you see me at the clinic – bring treats, but don't tell anyone.