Our Clinics

NHC Oregon City Medical Clinic

At NHC Oregon City Medical Clinic, you will receive patient-centered, community-minded care no matter your ability to pay or current state of wellness. This clinic located in Oregon City, Oregon offers team-based care for patients of all ages.

Services offered include primary care, family medicine, preventative care, chronic care management, behavioral health and mental health support, nutrition education, and prescription support. We also offer trusted referrals for patients in need of specialty care. 

Call Us With Your Questions or to Make an Appointment

Clinic Info

Hours of Operation

Monday – Friday: 7:00AM – 6:00PM

Saturday and Sunday: Closed

After Hours Advice Line

A nurse triage service is available after hours for patients in need of clinical advice. Call (503) 656-9030.

For prescription refills of established non-narcotic medications, please call back during business hours. Please note it may take up to 72 hours to process a medication refill. Any new medications or narcotic medications require an in-person visit with your provider before filling. If you cannot wait for a prescription refill, please visit an urgent care facility in your area.

How to Find Us

This medical clinic is located on Molalla Ave., however, the entrance and parking lot is off Pleasant Ave. If you are heading north on Molalla, you will not be able to turn left onto Pleasant Ave. Instead, you will need to drive past the clinic and take the first left which will be Pleasant Ave. Drive up Pleasant Ave a short distance to turn into the clinic.

Taking the Bus?

This clinic is close to the Molalla & Mountain View Stop for the 32 and Oregon City Shuttle buses.

You can plan your trip at trimet.org/home/planner.

Transportation Assistance

If transportation is an issue, healthcare transportation assistance may be available. Call the clinic or talk to a receptionist for help. Some insurance plans cover the cost of transportation to and from the clinic. Bus passes, gas cards, or other reimbursements for travel to and from the clinics, may also be available.

Our Staff

A bearded Max Cohen smiles for his headshot in from of a white background.

Maxwell Cohen, ND

Education:  N.D.  National University of Natural Medicine, Portland, OR | Residency at the National University of Natural Medicine, Portland, OR

Experience:  Completed residency in integrative primary care

At NHC:  I inform and educate patients on the importance of preventative healthcare with an interest in diet and lifestyle medicine and practice evidence-based integrative medicine

My Clinic:  Oregon City Medical

What I do for Fun:  Bike, go backpacking, photography, and spend time with family

Headshot of

Otuodita “Dr. E” Ejiasa, MD

Education:  M.D.  University of Pittsburgh, Pittsburgh, PA

Experience:  Over 12 years of experience in healthcare, including eight years of work in urgent care services, primary care services, and family medicine; additional experience designing and crafting grafts for spinal, joint, and reconstructive surgery; 2018 Portland Monthly’s Top Doctor

At NHC:  I provide primary care services to patients of all ages, backgrounds, and current states of wellness

My Clinic:  Oregon City Medical

What I do for Fun:  Cook, bake, travel, participate in outdoor sports, and read

Brittney smiles for her headshot in from of a white background.

Brittney Griggs, MMS, PA-C

Education:  M.M.S.  Saint Francis University, Loretto, PA | Certificate in Physician Assistant Studies  Red Rocks Physician Assistant Program, Lakewood, CO

Experience:  Over five years of experience working in primary care, working with a variety of patients from diverse backgrounds, ethnicities, sexual orientations, and gender identities

At NHC:  I provide primary care services to patients of all ages, backgrounds, and current states of wellness

My Clinic:  Oregon City Medical

What I do for Fun:  Read on rainy days, puzzle, golf, and go hiking

Catherine Kateley-Williams, MA, LPC, CADC1

Education:  M.S.  Pacific University, Hillsboro, OR | Licensed Professional Counselor | Certified Drug and Alcohol Counselor

Experience:  Practicing counseling since 2015, with specialized training in mediation of group conflicts, gerontology work with end-of-life preparation, behavioral therapy, psychoeducation, motivational interviewing, and cognitive behavioral therapy

At NHC:  I provide Behavioral Health services to diverse populations, including pregnant women and women postpartum suffering from addiction, victims of trauma, individuals who experience homelessness and mental health disorders

My Clinic:  Oregon City Medical

What I do for Fun:  Read, sew, and volunteer at Portland’s various anime conventions

Erin, female, smiles for her headshot in from of a white background.

Erin Lingenfelter, FNP

Education:  M.S.N.  University of Indianapolis, Indianapolis, IN

Experience:  Six years of nursing experience in an inpatient setting at IU Health Methodist Hospital in Indianapolis and four years of provider experience in Family Practice

At NHC:  I provide primary care services to patients of all ages, backgrounds, and current states of wellness

My clinic:  Oregon City Medical

What I do for Fun:  Enjoy the Pacific Northwest through hiking and skiing, eat great food, and travel

Monica Marquez, PharmD

Education:  PharmD.  Oregon State University and Oregon Health & Science University, Corvallis and Portland, OR

Experience:  Experience as an Ambulatory Care and Pharmacy Resident at Oregon State University, member of the American Pharmacists Association and Oregon State Pharmacy Association

My Clinic:  Oregon City Medical

I am fluent in Spanish!

I absolutely recommend this clinic, and my husband and nephew also go here. Erin Lingenfelter is our Family Nurse Practitioner and she's AMAZING! This clinic has everything you'll need and we've been so impressed with Erin's care for all of us. 

Diana, Clinic Patient

Best customer service and care, hands down. These people from the receptionist to the doctors and nurses are caring, sincerely caring and professional. Everyone is friendly, even in the hallways... I am thrilled I found [Oregon City Medical].

clinic patient