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847 Parchment Drive, Suite 105, Grand Rapids, MI 49546

Thrive Center for Health

Our Team

Thrive’s Core Values

Delivering alternative treatments to ease human suffering through integrative care

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Compassionate

We meet patients where they are in their healing process and provide empathetic care.

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Approachable

We actively listen to both our patients and coworkers, and are open to communication.

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Inspiring

We inspire each other and our patients to keep going.

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Dedicated

We love what we do, and are all here to provide better patient care/experiences.

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Authentic

We are each truly ourselves and allow others to do the same.

What Makes Thrive Unique

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Peaceful Environment

Our office is surrounded by nature.

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Integrative Care

Numerous ways to helps patients (well rounded service).

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Psychedelic Interventions

Knowledgeable in the psychedelics industry and have a proven team for it.

Our Team

Dr. Drumm

Dr. Drumm, Medical Director

Dr. Drumm is a General Psychiatrist who completed his residency training at the University of Texas Health Science Center at San Antonio – during which he engaged in clinical research with Ketamine, evaluating its utility in the treatment of Psychiatric disorders.

Dr. Drumm has experience in treating mental health conditions in children, adolescents, adults and geriatric patients.  Over the years he has been a professional speaker in pharmacology, pharmacogenomics and has trained multiple mental health professionals.

He possesses a special interest in Bipolar Disorder, Post Traumatic Stress Disorder (PTSD), ADHD, Autism Spectrum Disorders, Sports Psychiatry, Psychosomatic Medicine, Psychopharmacology and Treatment-Resistant Depression.  Dr.Drumm is passionate about his profession and is proud to provide leadership at Thrive Center for Health.

Celeste kreger

Celeste Kreger, MSN, CRNA

Celeste Kreger is a Certified Registered Nurse Anesthesiologist. She received her BSN from Ferris State University and her MSN from Case Western Reserve University. Prior to graduate study, her 5 years of nursing experience included general medical, post anesthesia care and critical care. Celeste has been published in Nursing Journal, Journal of Neuroscience Nursing and Nursing Management.

Celeste has been a ketamine provider with Thrive Center for Health since 2018. She is a member of The American Society of Ketamine Physicians, Psychotherapists, and Practitioners (ASKP3). Her ketamine educational training includes annual ASKP3 conferences and ongoing continuing education.

Their mutual goal of providing outstanding care and compassion for all patients led to the desire to work together in caring for patients who could benefit from ketamine therapy. Celeste’s background as a bedside nurse and as an anesthesia nurse have provided her with a unique perspective on caring for patients.

In addition to working with Thrive Center for Health, Celeste also provides anesthesia in outpatient and office-based settings.

Maryann dow

MaryAnn Dow, MS, CRNA

MaryAnn is a Certified Registered Nurse Anesthesiologist, with over two decades of healthcare experience. She completed her undergraduate degree in Neurobiological Sciences at the University of Florida. Following her undergraduate education, she performed intraoperative neuromonitoring during surgical procedures. MaryAnn went on to pursue a nursing degree and subsequently earned a Masters of Science in Anesthesiology from Barry University. Her early fascination with behavioral neuroscience led her to working with teams and co-authoring publications in both Chemical Senses and the American Journal of Electroneurodiagnostic Technology.

MaryAnn has been a provider at Thrive Center for Health since 2020. In addition to providing ketamine services at Thrive, she administers anesthesia for surgical procedures in hospital, outpatient, and office settings. To enhance her professional career, MaryAnn completed CTI’s Co-Active Leadership Conference, as well as Brene Brown’s Dare to Lead Seminar.

I find great joy and satisfaction in working at Thrive. It’s very rewarding to connect with patients through honest, vulnerable conversation, as they improve their lives with the help of ketamine and our fantastic team.

Kari hoffius

Kari Hoffius, PMHNP

Psych Mental Health Nurse Practitioner

My name is Kari Hoffius, and I am proud to call Spring Lake, Michigan my hometown. Family has always been important to me, growing up with two little sisters and a younger brother. Now, as a mother to my one-year-old daughter, Xenia, I find pure joy and purpose in watching her learn and grow!

Alongside the challenges of nursing, I also find solace in weightlifting and conditioning, practices that help me navigate the stresses of life.

Graduating from Baker College with my BSN in 2018 was a milestone that opened doors to diverse nursing experiences. From serving as a cardiac nurse in Hawaii to embarking on travel nursing adventures, each role has shaped my professional path. I believe mental health is incredibly important, and through the use of ketamine therapy, I look forward to helping our patients through their mental health challenges. I am excited to embark on this new chapter of making a positive impact in their lives.

Kelsey spencer

Kelsey

Family Nurse Practitioner

I graduated from Spring Arbor University in June of 2023 and I have been practicing as a Nurse Practitioner since then. I love working at Thrive Center for Health because it allows me to create relationships with patients and have an amazing group of coworkers that are supportive and caring.

I have an obsession with Australian Shepherds and I have a 1 and a half year old red merle that is my pride and joy.

Jay patrick

Jay Patrick Clancy, RN, BSN, MS, CEN, EMT-B

Nursing Director, Thrive Center for Health

As the Nursing Director of Thrive Center for Health, Jay brings over 10 years of clinical experience and a strong foundation in emergency nursing. Holding a Bachelor of Science in Nursing from the University of Michigan and a Master of Science in Organizational Leadership, Jay combines clinical expertise with a focus on leadership and operational efficiency.

Focused on both clinical excellence and leadership development, Jay works to cultivate a collaborative, patient-centered environment while promoting continuous professional growth within the nursing team. By integrating evidence-based practices and embracing innovation, Jay strives to maintain the highest standards of care in the outpatient infusion setting.

Outside of work, Jay enjoys reading comic books, staying active through regular exercise, and watching sports.

Krika

Erika , RN

Erika has been a nurse for eight years, and started in the clinic in 2022. She loves lending support to individuals as they navigate their unique circumstances. She joined the clinic to continue making a positive impact on people’s lives. Her fun fact is that she recently learned to scuba dive!

Kim

Kim , RN

Kim has been a nurse for 22 years, and she started working at the clinic in 2022. She enjoys working at the clinic because she has a passion for helping people live a healthier life, and she enjoys the difference she is making in others lives at the clinic. Her fun fact is that she Youngest of 7, and she grew up in Ohio, and she loves to Travel.

Julie

Julie Jackson, RN 

I have been a nurse for nine years, with 6.5 years in OB and 2.5 years in mental health, following 12 years as a licensed veterinary technician. My passion for Thrive/Ketamine and mental health is driven by my love for helping people and witnessing the positive impact on their well-being. Outside of work, I own, ride, jump, and show my warmblood horse Baloo across the Midwest, and I am a proud mother of twin 18-year-old girls.

Keteelyn

Katelyn

Administrative Assistant

Katelyn is our administrative assistant at Thrive Center for Health. Katelyn attended Western Michigan University, initially focusing on speech pathology, later changing her major to family studies. She is still focusing on continuing her education. Her bubbly personality and contagious smile is usually the first thing you see when you enter our office. She is always here for our patients to share compassion, optimism, and kindness. She is a passionate advocate within the mental health community and strives to support and uplift those who struggle with mental health or chronic pain.

Maryann

Marcie

Spravato Clinic Administrative Assistant

I have been working in patient care for the last 10 years. It all started out with the tiniest of humans by working in the Neonatal Intensive Care Unit which will always hold a very special place in my heart. I have moved around a bit the last couple of years and have landed here at Thrive where I feel very happy. The difference we can make everyday is incredibly gratifying. The staff care about each and every patient who walks through the door. The dedication is unwavering. I’m proud to be a part of this team.

I have three sons, all grown, an amazing daughter in law and the most precious granddaughter. When I’m not at work, you will find me at the beach or vacationing with my family.

Melissa

Melissa Kreger

Business Manager

Melissa Kreger graduated from Michigan State University in May 2022 and now serves as the Chief of Operations at Thrive. She is deeply passionate about expanding access to mental health care for those who need it most. Being part of the Thrive team has allowed her to grow within the mental health space, and she is honored to contribute to an organization dedicated to advocacy and support.

A fun fact about Melissa—she played travel softball for 10 years while growing up.

Mark

Mark Varney, LMSW

Interim Group Therapist

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