Care providers

Mattawa Community Medical Center care providers include:

Alex Giannakopoulos


He is currently serving as the Pharmacist and Pharmacy Manager.  He completed his pre-pharmacy coursework and undergraduate degree in chemistry at Metropolitan State University of Denver and subsequently received his Doctor of Pharmacy degree from the University of Colorado. Aspects of pharmacy that he particularly enjoys include therapeutic uses for medications, drug-drug interaction screening and assisting his patients in receiving their medications.  In his spare time, some of his favorite things to do include going to the movies, road trips and spending time with family.


Alex Giannakopoulos

he / his

Alvin Thien

Doctor of Dental Surgery

He graduated from the University of Washington school of dentistry and has practiced in the Columbia basin ever since. He has practices dentistry in Othello, Connell, and Mattawa. He had practiced both in Private practice and in community health dentistry for the last 25 years.

He has been an Affiliate instructor both at the University of Washington and A.T still school of Dentistry and Oral Health. He was also an Affiliate instructor and Regional Director for the residency program for the Langone NYU residency program.

He is married to his wife Ellie and  three children, two who go to the university in Arizona and has one in high school.

He currently practices in Mattawa as a general dentist providing all aspects of dentistry from general dentistry, implant placement & restoration, teeth straightening , and dental surgery.

he / his

Daniel E Sloane

he / his

Jennifer Beaty

ARNP, FNP-C, Medical Director

Jennifer received her Bachelors in Nursing degree at Seattle University and Masters in Nursing at Simmons University.  As a nurse and Nurse practitioner she has worked in a variety of inpatient and outpatient settings – Children’s Hospital, various pediatric clinics and both community health clinics and Family practice clinics.  She holds a national certification with the American Academy of Nurse Practitioners

Jennifer enjoys seeing patients at all ages and stages of life, and she strives to bring empathy, compassion and a high quality of care to every patient interaction

she / hers

Josilyn Baugher

ARNP, PMHNP-BC, Behavioral Health 

Josilyn is a board-certified Psychiatric Mental Health Nurse Practitioner. She earned her Bachelors in Nursing and her Doctorate in Nursing Practice from Washington State University. She has over 10 years of nursing experience in various settings including the Emergency Department, Intensive Care Unit, Inpatient Psychiatric Unit, and a school district. In her spare time, she enjoys gardening, fishing, and spending time with her husband and their two dogs. Josilyn has a passion for helping people reach their full potential while dealing with mental illness. She enjoys partnering with patients and their families to decrease stigma and encourage open conversations about mental health while creating treatment plans that work within patient’s lives.

she / hers

Mara Fusfiled

Advanced Registered Nurse Practitioner
she / hers

Sally Myer

ARNP, FNP-C, Family Nurse Practitioner 

After being an RN for 40 years in rural Kansas, Nebraska, and Wyoming hospitals, Sally returned to school, graduating from Fort Hays State University in Hays Kansas in 2023 with a Doctorate of Nursing Practice degree to practice as a Family Nurse Practitioner. Her employment at MCMC is in conjunction with participation in the Rural Health Nursing Initiative Nurse Practitioner fellowship through the University of Washington.

Sally has three grown daughters and two grandchildren who live in Wyoming. In her spare time, she enjoys reading, sightseeing in beautiful Washington State, cooking, eating Mexican food, and watching movies.

she / hers

before your visit

bring a list of your medications
bring your photo ID
bring insurance cards
bring copay
complete required paperwork
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