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Our Providers

Thomas Herron MD

B.A., M.D., University of Washington
Pediatric Residency, University of Colorado

Dr. Herron has been in practice in Gig Harbor since 1986 and enjoys seeing children of all ages.  He has helped many families whose children have experienced school problems and attention difficulties.

He and his wife, Verna, have raised four sons  and are passionate about bicycling, hiking and running as well as reading.

Dr. Herron founded Harbor Pediatrics in 1999.

Diane Bartels MD

B.S. Trinity University, San Antonio, TX
M.D. University of Texas, Dallas, TX
Pediatric Residency at Dell Children's Hospital, Austin, TX

Dr. Bartels has a particular interest in newborns and new parents.  She and  her husband, Moritz, are relatively new to Gig Harbor and have a young son and daughter.  They enjoy equestrian sports, traveling and reading.

Melanie Brace MD

M.D. University of Michigan, Ann Arbor
Psychiatry/Child Psychiatry training at University of Washington, Seattle.

Dr. Brace, a board certified child and adolescent Psychiatrist, provides psychiatric consultations to patients established in the practice at Harbor Pediatrics.  She provides diagnosis and treatment for most childhood mental health disorders and referrals for other therapies as needed.  Common conditions treated include: Autism spectrum Disorder, ADHD, Anxiety disorders, Mood disorders and stress related conditions.

After residency, Dr. Brace practiced as a consultant and inpatient Psychiatrist for 6 years at Children's Hospital in Seattle and has been treating patients in Gig Harbor since 2001.

Outside of work, she and her husband and three children enjoy outdoor recreation such as camping, hiking and biking as well as theatre and other performing arts.

Robyn Brand MD

B.S., Tulane University, New Orleans, LA
M.D., Tulane School of Medicine, New Orleans, LA
Pediatric Residency, Tripler Army Medical Ctr, Honolulu, HI

Dr. Brand loves all aspects of pediatrics with a particular interest in dermatology and infectious disease.

She and her husband, Tim, spend much of their time chasing after their young son and also enjoy diving, fishing, hiking and camping.

James Davis MD

B.S. University of Redlands
M.D. University of Utah
Residency:  Floating Hospital for Children at Tufts

Dr. Davis comes to us after spending 4 years of practicing Pediatric Urgent Care in Salt Lake City, Utah and has specific interests in sports medicine and infectious disease.  He believes that children are built to succeed and his role is to facillitate that success.
He and his wife and daughter love being outside, trying new foods and working on their yard at home.

Jennifer Hartz MD

B.S. University of Arizona, Tucson
M.D. College of Medicine, Univ. of Arizona, Tucson
Pediatric Residency at University of North Carolina Hospitals

Dr. Hartz enjoys caring for children of all ages but especially newborns and adolescents. 

Originally from the desert, they love anything on or near the water and, as a family, they like to spend their time outdoors or traveling.


Jennifer Lee DO

B.S. Pacific University, Forest Grove, OR
D.O Pacific Northwest University of Health Sciences, Yakima, WA
Pediatric Residency at Oklahoma Medical Center, Tulsa, OK

Dr. Lee enjoys all aspects of Pediatrics and has a particular interest in asthma care, obesity medicine and newborn care.  
She and her husband recently moved to Gig Harbor from Oklahoma; however they are originally from the Northwest. 

 They enjoy all aspects of being outdoors in the Northwest including hiking, biking, snowboarding, and gardening and they especially love sharing these activities with their young son and their dog. 

Vanessa Martin ARNP

MN-University of Washington
BS-Seattle University

Vanessa Martin is a board Certified Pediatric Nurse Practitioner (CPNP) who looks forward to providing compassionate and quality care to our children and families. She has worked and gained diverse experiences at various Washington hospitals and most recently she worked at a local non profit Pediatric clinic.  

She enjoys all aspects of pediatrics and nurturing relationships with each child and family unit.  She is originally from Honolulu, Hawaii but now calls  Gig Harbor her home.  She enjoys spending quality family time with her husband, Carlo and son.  She enjoys traveling, gardening and exploring the outdoors. 

Angie Mazur MD

B.A. Rice University, Houston, TX
M.D. Baylor College of Medicine, Houston, TX
Pediatric Residency  Texas Children's Hospital, Houston, TX

Dr. Mazur enjoys all aspects of general pediatrics, and has a special interest and experience in the care of medically complex children.
She moved here  with her husband, Erik, and three young children from Texas, and feels fortunate to live in such a beautiful and welcoming community. Aside from her full time job as a mom, she enjoys working in the garden, cooking, reading and muddling throu various DIY home improvement projects.

Denise Michaelsen MD

B.S. College of Charleston, Charleston, SC
M.D. Medical University of South Carolina, Charleston, SC
Pediatric Residence at Memorial Health University Medical Center, Savannah, GA

Dr. Michaelsen has a particular interest in allergy and immunology, adolescent reproductive health and newborn care. However, she enjoys all aspects of general pediatrics. 

She and her husband, Dave, recently moved to Gig Harbor from South Carolina along with their three young children.  As a family they enjoy the outdoors, water sports and snow skiing.

Katherine Schwartz Slettvet ARNP

BSN University of Washington
MSN Vanderbilt University

Katherine  enjoys caring for children of all ages and has a special interest in diabetes management and sports related injuries. Katherine believes that the best treatment emerges from a strategic partnership that involves the child, the family and the healthcare provider.

Katherine grew up in Kirkland and in her spare time enjoys running, yoga, traveling and reading.