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Greater Pathways

Comprehensive, compassionate, and respectful care for patients with substance use disorder.

At Greater Portland Health, we're committed to helping people recognize the signs of addiction and get the treatment they may need. Greater Pathways offers an effective and compassionate approach for patients struggling with issues of alcohol dependency, opiate addiction, or use of any other substances. 


Who can benefit from Greater Pathways?

  • Anyone suffering from substance use disorders
  • Those who simply want to know more about addiction
  • Anyone curious about whether they or a family member may have a problem with substances

  • Confidential assessment
  • Education about addiction and substance use disorders
  • Short term counseling, including cognitive behavioral therapy and motivational interviewing
  • Group Counseling
  • Medication Assisted Treatment
  • Recovery groups and peer support
  • Harm reduction education and services

Renee Fay-Leblanc, MD, Chief Medical Officer

A board-certified physician, Renee attended medical school at the University of Vermont and completed her residency in Internal Medicine at New York University. She is excited to provide vital services to the community in Portland, where she was born and raised.


Behavioral and Mental Health Counselors

Muse Ali, LCSW

Muse earned his master’s degree in social work from the University of Southern Maine. Originally from Somalia, he has a special interest in the delivery of culturally sensitive care, and provides medical interpreting assistance to adult patients in English, Somali, Arabic and Urdu. He uses EMDR therapy to reduce the effects of trauma.

Olga Alicea, LCSW, CADC

Olga Alicea is a Clinical Social Worker with a MSW from Boston College.  As a counselor, she aims to create a welcoming, non-judgmental, nurturing space that allows clients the opportunity to trust and create transformation in their lives.  Mindfulness and mind~body awareness, warmth and often humor are all key ingredients to her practice. 

Marianne Donahue, LCSW

Marianne earned her degree in social work from Boston University, and has over 25 years of experience helping individuals gain insight and learn skills to improve their emotional well being. She has a special interest and training in trauma, grief, mental health, and substance abuse.

Joanna Kass, Psychiatric/Mental Health Nurse Practitioner

Joanna was born and raised in Maine and cherishes the local community. She completed undergraduate degrees in psychology and biology at Bowdoin College and obtained her advanced practice nursing degree at the University of Southern Maine. She provides psychiatric care for school-aged children, adolescents, and adults.

Molly McMahon, LCSW

Molly earned her degree in social work from the University of Southern Maine. Trained in Trauma-Focused Cognitive Behavioral Therapy, Molly has worked with children, adults and families throughout her career, focusing on how best to provide culturally and linguistically appropriate mental health services.

Lori Nicholas, Psychiatric Nurse Practitioner

Lori worked with the homeless for many years before graduating from the University of Southern Maine. She offers psychiatric specialty care for children and adults.

William Price, LCSW, LDAC

Bill earned a master’s degree in social work from University of New England. He has worked as an LADC since 2005. Prior to joining GPH, he worked for the City of Portland at Health Care for the Homeless. He has worked with the homeless community for the past 11 years.

Heather Roberts, LCSW

Heather is a licensed clinical social worker who has specialized in substance use disorders for the past ten years. She has always had a passion for helping others and being able to aid in the process of change for those reaching out for support. Heather believes there is a strong correlation between substance use disorders and mental health and uses a variety of counseling techniques such as Motivational Interviewing and Cognitive Behavioral Therapy to address these concerns.

Kira Sawyer, LMSW—Clinical Conditional

Kira earned her master’s in social work from the University of Texas at Austin. Using evidence-based interventions such as Cognitive Behavior Therapy and mindfulness, she helps people from diverse backgrounds draw on their strengths and values to learn practical skills, make lasting changes, and lead fulfilling lives.

Erin Schwarz, DO

Dr. Schwarz choose to work at Greater Portland Health to continue her commitment to working with communities who have barriers to accessing care. She is particularly interested providing culturally sensitive and appropriate psychiatric care to our local immigrant, refugee, and asylee populations. Erin received her medical degree from Kirksville College of Osteopathic Medicine and completed her psychiatry residency at Oregon Health & Science University.

Primary Care Providers

Gladys Estrada, MD, Clinical Director

Gladys provides the clinical leadership and oversight at our South Portland primary care practice. She comes to Maine from Chicago where she completed her residency and fellowship after earning her BA from Harvard and MD from Georgetown Medical School. She speaks fluent Spanish and has a passion for family medicine, with a particular interest in women's health.

Catherine Gaynor, FNP, Clinical Director of Public Housing

Catherine received her master’s in nursing from the University of Southern Maine. She integrates a holistic approach into her care for patients of all ages, with a focus on women’s health, and feels privileged to be a part of each patient’s journey toward a balanced, healthy life.

Donna Lawlor, ANP-BC, DNP, Clinical Director of the Healthcare for the Homeless Program

Donna is a board-certified Adult Nurse Practitioner. She earned her master’s in nursing from Yale University and her doctorate from New York University, College of Nursing. Donna has a keen interest in community health and working in community-based health centers.

Elizabeth Frutiger, MD

A board-certified family physician, Elizabeth received her MD from the University of Massachusetts and completed training at Boston University Medical Center. She feels privileged to share in her patients’ efforts to live well, from birth to end-of-life.

Chris Gage, MS, ARNP, Family Nurse Practitioner

Chris Gage is a board certified Family Nurse Practitioner. He received his Master’s in Science at the University of Illinois at Chicago. He has a particular interest in family medicine, caring for the whole person, community health, and working across cultures.

Alison Gorman, MD

A board-certified family physician, Alison earned her MD at Albany (NY) Medical College and completed her training in Los Angeles. She cares for patients from birth to end-of-life, and provides chronic disease management and adolescent health.

Malual Mabur, MBBS, DTM&H, MSc Tropical Medicine, MSc Physician Assistant

Originally from South Sudan, Malual trained in Medicine and specialized in Tropical Medicine and International Health in Sudan, UK, and Jordan treating patients through non-governmental organizations at very remote settings. In 2009, Malual moved to the United States and settled in Maine. He went to Physician Assistant School at the University of New England and is now practicing as a Primary Care, Physician Assistant at Greater Portland Health.

Courtney Pladsen, FNP

After receiving a Bachelor’s of Science in Nursing from Boston College, Courtney worked as an ER Nurse for five years, went on to get a graduate degree from Georgetown University, and became a Nurse Practitioner (NP). In 2018, she was awarded the Robert Wood Johnson Foundation’s Culture of Health Leaders Fellowship, where over the next three years she will continue to develop programs that promote health equity specifically for people who are experiencing homelessness. She currently provides medical, mental health, and substance use treatment to people who are experiencing homelessness at the 63 Preble St clinic as well as medical outreach to people who were formally homeless in the Housing First Locations across the city of Portland. 

Gretchen Speed, Certified Adult Nurse Practitioner

Gretchen received her master’s in nursing from Northeastern University in Boston. She enjoys her work optimizing health and wellness for a diverse population.

Ryan Trosper, PA

A board-certified physician assistant, Ryan was born in Limestone,graduated from the University of New England, and earned his master’s in science from Le Moyne College in Syracuse, NY. He has practiced in primary care, emergency medicine, and urgent care, and is excited to be back in his home state.

Megan Waterman, MD MPH

A board-certified family physician, Megan received her MD and MPH degrees from Boston University and completed her residency and academic fellowship training at UIC in Chicago, IL. She cares for patients of all ages, and particularly enjoys substance abuse treatment (including medication-assisted treatment), chronic disease management, and women's reproductive health (including procedures such as contraceptive device placement and colposcopy).‚Äč