OMC’s Helping Hands
Our Healthcare Team

Eric Brasseaux, DDS (Natchitoches Clinic) – Dr. Brasseaux is a Doctor of Dental Surgery, serving as OMC’s General Dentist. He will provide general dentistry according to OMC’s scope of services. He has been a dentist since 2022.

Seneka Chaney, PMHNP, FNP (Natchitoches Clinic) – Ms. Chaney is both a Family Nurse Practitioner and a Psychiatric Nurse Practitioner. She provides wellness and acute care, as well as medication management. She is also able to provide care for patients with mental health conditions such as depression, anxiety, ADHD, schizophrenia, bipolar disorder, and more. She has been a Family Nurse Practitioner since 2013, and a Psychiatric Nurse Practitioner since 2022.

Harlan “Mark” Guidry, MD, MPH (Natchitoches Clinic) – Dr. Guidry has been a board-certified family physician since 1990, with specialized training in preventive medicine and public health. While most of his duties are executive in nature, he serves as a collaborating physician for nurse practitioners and hosts occasional preventive health clinics. He also serves as OMC’s Chief Executive Officer and Chief Medical Officer.

Amanda Hundley, FNP (Tallulah Clinic) – Mrs. Hundley, Lead Nurse Practitioner, has been a Family Nurse Practitioner since 2015. As a Family Nurse Practitioner, she is qualified to see patients of all ages and to provide women’s health services.

Doris Kochinsky, LCSW (Natchitoches Clinic) – Ms. Kochinsky is a Licensed Counselor. She provides Behavioral Health Services (i.e. counseling or “talk therapy”) to persons with mild to moderate mental health conditions such as anxiety, depression, and many other stress and adjustment disorders.

Mary Lancaster, FNP (Natchitoches School-Based Clinic) – Mrs. Lancaster has been a Family Nurse Practitioner since 2015. She has been the provider of a Natchitoches Parish School Board Clinic since 2017. She currently serves students and faculty at LP Vaughn and Natchitoches Junior High.

Blanca Osorio, MD (Telehealth Psychiatry) – Dr. Osorio has been a board-certified psychiatrist since 2009. She provides psychiatric medication management of patients referred to her after a behavioral health assessment performed by a counselor. She provides part-time services through telemedicine.

Selena Powe, FNP (Tallulah Clinic) – Mrs. Powe has been a Family Nurse Practitioner since 2020. As a Family Nurse Practitioner, she is qualified to see patients of all ages and to provide women’s health services.

Joyce Williams, DNP (Leesville Clinic) – Dr. Williams has been a Doctor of Nursing Practice since 2020. As a Family Nurse Practitioner for over 15 years, she is qualified to see patients of all ages and to provide women’s health services.