Mason Clinic - Walk-In
When you need prompt medical attention for non-life threatening medical conditions, Mason Clinic's Walk-In Clinic is staffed by a team of qualified health care providers who offer convenient, quality medical care, seven days a week. Current and new patients are welcome.
Walk-In Clinic
- Mon-Fri: 8:30 a.m. to 6 p.m.
- Sat/Sun/Holidays: 8 a.m. to 5:30 p.m.
About Walk-In Clinic
*Clinic hours subject to change once daily capacity fulfilled.*
The Walk-In Clinic is NOT scheduling COVID-19 vaccinations at this time.
When you have a non-emergent medical condition, please start by contacting your primary care provider's office first for an appointment.
When your regular doctor or health care provider is not available, Mason Health's Walk-In Clinic will provide care to you if you have a non-life-threatening illness or minor injury.
Types of services provided may include treating non-emergent common illnesses such as:
- Colds
- Flu
- Ear aches
- Sore throats
- Migraines
- Fever
- Rashes
The Walk-In Clinic will also treat minor injuries such as:
- Sprains
- Strains
- Minor cuts
- Other minor injuries.
If you believe you have a serious or life threatening illness or injury that requires immediate attention, please go directly to the nearest emergency room or call 911.
Clinic Providers
Brianna Gutierrez, PA-C
Brianna Gutierrez, PA-C, first moved to Shelton in 2012, where she began her career as a physician assistant at Olympic Physicians. She has a master's degree in Physicians Assistant Studies from South University in Savannah, Georgia. SHe is a certified Physician's Assistant now practicing at Mason Clinic Walk-In.
Medina Glenn, PA-C
Glenn is a certified physician assistant who wants to empower patients on their healthcare journeys. She graduated in 2025 from the University of Washington's MEDEX Physician Assistant program with a master's degree in Clinical Health Services.
John Janisko, PA-C
Janisko is a board-certified Physician Assistant who received his degree from A.T. Still University. He is passionate about taking a whole person healthcare approach.