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Primary Care

Primary Care Medical Services



Waterfall Community Health Center is an accredited patient-centered medical home.

We provide comprehensive medical care for the whole family and empower our patients through education, preventative health counseling, and quality care.

As your primary care provider, our role is to provide preventative care, teach healthy lifestyle choices, identify and treat common medical conditions and access the urgency of medical problems.

A patient-centered medical home ensures our quality team is available and knows you and your health history while coordinating your care. Your primary care provider acts as your coach to get healthy, stay healthy and get the care and services right for you.


Primary Care Providers

Dr. Mark Pasternak, MD

Family Practice Physician

Dr. Shirley Reynolds, DNP, APRN, FNP-C

Family Nurse Practitioner

Dr. Shirley D. Reynolds was born and raised in Chicago, Illinois. She attended Harold Washington College in Chicago, Illinois where she obtained a dual degree, an Associates of Science in Nursing and Associates of Science in Respiratory Therapy. Shirley then returned to school shortly after to attend Chamberlain University for her Bachelor of Science in Nursing. Following this, she returned to Chamberlain University for her Master of Science in Nursing, specializing in Family Nursing Practice. In 2019 she completed her Doctor of Nursing Practice in Healthcare Systems Leadership. Shirley later relocated to Oregon from Chicago due to her husband’s job. She joined Waterfall Community Health Center in 2019 and is a Doctorate prepared Family Nurse Practitioner specializing in Internal Medicine. She found out about the clinic through a mutual friend and the mission immediately caught her attention and made her want to join. Shirley loves weightlifting, cooking, fashion, singing, dancing, fishing, and crabbing. She is also a certified Trauma Nurse, TNCC, ACLC, and PALS certified.

Lori Shott, MSN, APRN, FNP-C

Family Nurse Practitioner

Lori Shott was born and raised in the Coos Bay and North Bend area. She obtained her AAS in Nursing from the local community college, SOCC. Lori obtained her bachelor’s in Nursing at Chamberlain University, and her master’s in Nursing at Simmons University. As she worked in various roles in her field her mother became very ill, and despite being in the medical field, they still had a very hard time getting her the care she needed. This spurred her to go back to school to obtain her Family Nurse Practitioner degree. She eventually found her way to Waterfall Community Health Center upon a friend who was already part of this family. She is now our Family Nurse Practitioner and works as a provider in school-based health. She is the school-based Health Coordinator, and provides medical oversight for the Waterfall Immunization Program. Lori loves being outdoors, camping, rafting, and animals. She has several horses and goats on her property up the river.

Martin Roco, MSN, APRN, FNP-C

Family Nurse Practitioner

Martin Roco considers the great state of Texas as his home state. He has however travelled extensively and has spent a few years in Southern California, Arizona, and most recently in New Haven, Connecticut where he worked at Yale University Hospital before graduating at Sacred Heart in Fairfield, CT for his NP program. Martin has done locum work since 2012 and has been in Eugene, Oregon since 2015. He has a huge passion for travel and loves experiencing different cultures. Martin has hiked most national parks with a few more left on the bucket list. Likewise, he is down to a few more continents before having travelled to most parts of the world. 

Shelly Prather, MSN, APRN, FNP-C

Family Nurse Practitioner

Ya-Chi “Claire” Chang, MSN, APRN, FNP-C

Family Nurse Practitioner

Ya-Chi ‘Claire’ Chang was born and raised in Taiwan. Claire graduated from Rockhurst University with a Bachelor of Science in Nursing. She later completed her Family Nurse Practitioner degree from UT Health Science Center at Houston and completed most of the training at UT Physicians Multispecialty at Houston. While attending graduate school, Claire was working at Houston Methodist Hospital on a heart failure unit. She joined Waterfall Community Health Center at the beginning of 2021, and is a Family Nurse Practitioner. She loves traveling the world, camping, and hiking. In fact, she was once charged by a large grizzly bear when she was hiking at Glacier National Park in 2017. Luckily, Claire’s husband had bear spray in hand, and it saved their lives.

* Your health is important to us, and your health care information will remain private under the bylaws of the Health Information Privacy Act from the U.S. Department of Health & Human Services.

** Patients/clients have a right to service regardless of your race, sex, religion, age, ethnic background, linguistic preference, education, social class, economic status, sexual orientation, or handicap.