Meet our Medical Providers

Christine Negendank

Is the Chief Medical Officer of adult psychiatry at Adult & Child Health. She provides medication management and leads the adult psychiatry team, collaborating with nurse practitioners, and helping develop agency policies and procedures. Dr. Negendank is a board-certified psychiatrist in adult & forensic psychiatry.

She began her medical training at Wayne State University and completed a psychiatric residency at the University of Michigan. Dr. Negendank served as chief resident and devoted many elective hours to the homeless outreach clinic. In her forensic psychiatry fellowship, she developed expertise in violence and suicide risk assessments, provided expert witness testimony, and performed evaluations for those defendants requesting competency and not guilty by reason of insanity.

Since, she has worked in community mental health, often serving and advocating for jailed and homeless individuals. When not working she enjoys spending time with her family, competing in triathlons, & keeping up with her children’s passions of art, music, and archery.

Shavon Donald

Is a board-certified Family Nurse Practitioner. She began her career in health care by working in the stepdown ICU at IU Methodist Hospital and transitioned to inpatient medical psychiatry while at Methodist. Since that time, she has gained experience in retail health, urgent care, and family practice before joining the A&C team in 2016. She has served Adult and Child in both adult psychiatry services and addiction medicine.

In addition to her clinical experience, Shavon’s academic background includes a bachelor’s degree in Nursing and a Master of Science in Nursing from the University of Indianapolis, graduating magna cum laude.

In her free time, Shavon enjoys spending time & traveling with her husband and two daughters, reading, and exercising. She is a strong advocate for empowering nurses, and believes that nurses should play a pivotal role in shaping modern health care.

Lisa Koers

is the primary physician at the Garfield Park clinic (234 E. Southern Ave.), where she sees patients of all ages. Dr. Koers enjoys helping patients treat their health conditions through lifestyle changes. Dr. Koers is also fluent in Spanish.

She attended Indiana University for both undergraduate and medical school. In 2017, she completed training in full spectrum Family Medicine at the Greater Lawrence Family Medicine Residency in Lawrence, Massachusetts. She also completed a 300 hour course in medical acupuncture through Harvard University and has performed acupuncture and prenatal care in groups at Federally Qualified Health Centers (FQHCs). Professional areas of interest include integrative medicine, social determinants of health, and access to reproductive health care.

She takes a holistic approach to primary care, viewing food as medicine and food insecurity as a central cause of many health issues. She offers acupuncture treatment to her patients. Above all, she is committed to working with low-resource populations to improve their health and access to care.

Annette Kleinhenz

Is a Psychiatric Mental Health Nurse Practitioner. New to nursing school in 2010, she expected to work at the birthing center as she’d served as a doula & lactation consultant. However, OB was not where she felt most compelled to work when she graduated in 2012 with her Associate of Science in Nursing from Ivy Tech & Bachelor of Science in Nursing that same year from IUPUC. She then went into the Master of Science in Nursing Psychiatric Nurse Practitioner program at IUPUI.

Annette worked in the psychiatric inpatient unit at Columbus Regional Hospital before coming to Adult & Child. She has volunteered with the National Alliance on Mental Illness (NAMI) since 2002 & is the current president of NAMI South Central Indiana in Columbus. She also works with opioid use disorder clients at Groups, Inc and works with her husband, a Bartholomew County Commissioner to address the growing opioid deaths in their community.

Her favorite volunteer work is contributing to music programs as a director/accompanist/teacher and currently serves as the Primary Chorister teaching music to children for The Church of Jesus Christ of Latter-day Saints. She is most excited about welcoming her 13th grandchild this October.

Tina Baxter

APRN, GNP-BC, is a board-certified gerontological nurse practitioner & adult prescriber. She holds a master’s degree in nursing education and a post-master’s certificate as gerontological nurse practitioner from the University of Indianapolis. She previously worked as a nurse practitioner in many behavioral health settings & is an educator, previously teaching as adjunct faculty at the University of Indianapolis, Anderson University, and Ivy Tech Community College. She is a faculty member and educator for PESI Healthcare where she serves a national speaker, building upon her past experience as a national speaker for SAMSHA.

Mrs. Baxter has served in many organizations & board appointments including the Indiana State Nurses Association, American Red Cross, Madison County Minority Health Coalition, Black Nurses Association of Anderson, Indiana INC, Anderson/Madison County Black Chamber of Commerce, Concerned Ministers of Anderson, American Association of University Women, and many others.

She is married to her husband of 21 years. She serves as an evangelist and a commissioned parish nurse for her local congregation. Mrs. Baxter enjoys spending time with her family and friends, watching movies and reading.

Tracy Moseman

FNP, is a Family Nurse Practitioner at the Garfield Park Primary Care Clinic. She has been in health care for 10 years. She started her career as a nurse in an Adult Surgical and Trauma Unit and later transitioned to Pediatric Oncology. Prior to her work with Adult and Child, Tracy was a primary care provider at a geriatric psychiatry inpatient facility working with the dementia population.

Tracy joined the A&C team in 2019. She has served Adult and Child seeing patients of all ages for acute and chronic issues. She also supports vulnerable patient populations with gaining access to the social services needed to maintain their quality of care. In addition to her clinical experience, Tracy's academic background includes a bachelor’s degree in Nursing at Indiana University and a Master of Science in Nursing as a Family Nurse Practitioner from the University of Indianapolis.

In her free time, Tracy enjoys spending time with her husband, running, and traveling.

Yolanda Bray

Is a board-certified Psychiatric Nurse Practitioner. She began her health care career in emergency & trauma medicine. She worked both inpatient & outpatient settings before transitioning to community mental health. She joined the Adult & Child Medical Team in 2014. Her role includes child, adolescent, and adult psychiatry, as well as addiction services.

In addition to her clinical experience, Yolanda’s academic background includes a bachelor’s degree in Nursing and a Master of Science in Nursing from Indiana University. She is a member of APNA and ANCC.

In her free time, Yolanda enjoys spending time with her husband & 2 children. She is a sports fanatic & loves traveling with her family.

Arman Siddiqui

Is an Adult & Child Adolescent Psychiatrist. He is board certified in Psychiatry and in Child & Adolescent Psychiatry. He did his Residency and Fellowship at New York Medical College. He has been with Adult & Child since 2015. He has been awarded multiple awards including the Clinical Excellence Award and Outstanding Intern by New York Medical College.

Christy Dixon

APRN, began her career in health care as a lab assistant in the early 80’s and became a Licensed Practical Nurse in 1985. She obtained her Registered Nurse degree in 1989, & graduated from IUPUI in 2012 as a Nurse Practitioner. All of her clinical experience has been in Mental Health and she has worked with all populations with Psychiatric-Mental Health needs, in settings including Outpatient, Inpatient Acute Care for patients with psychiatric substance abuse needs, Inpatient Residential Care and State Hospitals for patients with long-term Psychiatric needs. Her specific interests in Psychiatry are patients with mood disorders, thought disorders & caring for patients who have survived trauma. She enjoys precepting Nurse Practitioner Students and is interested in working to streamline systems in healthcare delivery models.

Personally, she enjoys spending time with family and friends, especially with her grandsons. She loves dogs, reading, social media & keeping up with current events. She hopes to travel more in the future and to visit more of the United States and Europe someday.

Charles W. Coats

MD graduated from Indiana University Bloomington with a BA in Biological Sciences before attending IU School of Medicine Indianapolis. He then completed a Residency in Psychiatry and a fellowship in Child and Adolescent Psychiatry.

Dr. Coats is board-certified in General Psychiatry and Child & Adolescent Psychiatry. He served as Chief of Staff of Valle Vista Hospital in Greenwood In for 11 years and directed all the Child and Adolescent Programs both Acute and Residential. He came to the Adult and Child Center in 1998 and continued to serve in Child and Adolescent Psychiatry. Served as Medical Director of Adult and Child Health Services until recently, now serving as Associate Chief Medical Officer to Dr. Negendank. His duties include direct patient care of Child and Adolescent patients at the 8320 Madison Ave office and providing collaboration to the Child and Adolescent APN’s. He has also leased out to Intecare as their Medical Director for past 17 years.

He has been married for 27 years and resides in Franklin Township with his wife & twin 15 year old daughters who are involved with gymnastics, dance, & show choir.

Darlene Newell

Is a nurse practitioner for Adult & Child in Franklin. She’s worked in the medical field for over 40 years and as a Family Nurse Practitioner for the past 20.

After graduating from the MSN/NP program at IU, Darlene became a Doctor of Naturopathy. She developed an interest in natural wellness after doing missionary work in Haiti. Before A&C, she worked for the IU Health system & Indiana Internal Medicine as a nurse practitioner and St. Francis Hospital as an RN. She was an oncology nurse and opened an indigent clinic for SF as well as starting their Pain Clinic. Darlene was Nurse of the Year at SF in 1991 and 1995 and won the Family Spirit Award in 1998. She was on the speaker’s bureau for several pharmaceutical companies and is an adjunct professor at University of Indianapolis. Darlene practiced with Grace at Home for 4 years, providing care for patients who were unable to get out of their homes and see a provider.

Darlene has always been a lifelong learner. She’s taken personal enrichment classes in cake decorating, belly dancing, upholstery, art, wine making, candy making, as well as her dancing and quilting classes. Darlene has recently remarried, has 3 children, 4 grandchildren, & 2 great grandchildren.

Nicole Swann

APRN, is board certified as a Psychiatric Mental Health Nurse Practitioner at Adult & Child. She sees adult clients for medical evaluation and medication management and treats the full complement of mental health disorders. She has 10 years of experience as a nurse practitioner and over 20 years of experience in the field of nursing and health care. She holds an undergraduate degree from the University of Iowa, a Master’s of Science degree in Nursing from Vanderbilt University, and a post-graduate certification from the University of Louisville (as a Louisville, KY native, she recognizes the Kentucky Derby as an observed holiday by birth right!) Her other hobbies include hiking, swimming & dog walking.

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