News 2020-02-20T17:58:41+00:00

About Oasis

Oasis provides timely access to mental health care for children, adolescents, adults and families in a private, comfortable setting.

Take the first step, make an appointment.


Dr. Marianne Hatle

Dr. HatleOasis is pleased to announce that Dr. Marianne Hatle has joined our team. Dr. Hatle hails from Norway where she graduated summa cum laud in the top 10% of her class from the University there. She subsequently worked in family practice there until she was accepted to the psychiatric residency program at The University of Baltimore in Maryland. After completing her residency in 2001, Dr. Hatle worked at St Josephs Medical Center for 2 years, where her main focus included Eating Disorders; and, then started her own clinic in Columbia, Maryland that she later sold to return to Norway where she practiced psychiatry for 14 years. She was appointed as an expert witness at the supreme court of Norway regarding a case dealing with psychiatry and eating disorders; and, has written numerous articles and a book chapter within the field of eating disorders.

Dr. Hatle has now returned to Maryland and will be working as a general psychiatrist at Oasis the center for Mental Health.

Gina Pennington

Gina PenningtonOne of Oasis’ newest therapists is Gina Pennington. Gina is a Licensed Clinical Professional Counselor who obtained her Master of Science (MS) in Clinical Community Counseling from Johns Hopkins University and her Bachelor of Social Work from the University of Georgia. Gina has over fifteen years’ experience in the mental health field providing counseling services to adolescents and adults alike in a wide variety of contexts. For example, Gina has begun treating young children this year using play therapy techniques. Gina specializes in treating individuals to cope with anxiety, depression, relationship problems, and low self-esteem.

With a compassionate, down to earth, and practical approach, Gina helps patients develop coping skills through cognitive behavioral therapy (CBT), mindfulness, and acceptance strategies. Her goal is for you to have a safe place to share your concerns while also learning coping strategies to use outside of therapy.

Vivian Umeugo recently joined as a Family Psychiatry Nurse Practitioner.

Vivian UmeugoVivian started her nursing career in 2000, continuing her studies in nursing, completing advanced degrees in Nursing Leadership and Management, as well as in Family Psychiatry and Mental Health. Vivian is a Board-Certified Family Psychiatry Nurse Practitioner and is licensed in Maryland and Washington D.C. Her previous experience includes work in hospice care, medical surgery, community health, in-patient hospital, out-patient clinics, pediatrics, as well as mental health settings.

At Oasis, Vivian is involved in the entire continuum of care, qualified to diagnose and treat a wide array of mental health conditions across the entire lifespan. Vivian believes in forging relationships with people to not only understand their mental and health needs and goals, but also work collaboratively with patients to develop a plan to achieve their best possible state of health.

Saturday Walk-in Hours

Our Saturday walk-In hours are from 9 a.m. to Noon for emergency therapy only. Appointments for medication management will have to be made during our Monday-Friday operating hours.

No Appointment Necessary!

Get Immediate Help

We offer Free Screenings and Extended Hours to accommodate you in your time of need.

Mental Health Emergency

If your mental state poses a risk of harm to yourself or others, call 911 immediately.


I just want to thank Dr. Richard for his time with me…he made me feel less anxious and relaxed in his presence.  He is also very professional and seems to care about me as a patient.  M.

The Front Desk is always so cheerful.  I enjoy everyone here.  Thank you so much!  A.

Just wanted to thank you for your help and support of my son…the medication was a game-changer.  I think it’s safe to say that you saved him a hospitalization and perhaps even saved his life. Thank you.  J.
I have been a patient here for almost 1 year.  The customer service as well as the quality of service is excellent…I feel that my mental [health] has improved greatly since the beginning of my therapy.

Free Screenings & Convenient Hours

Extended Hours
Open 8:00 a.m. to 10:00 p.m. Monday – Friday
Saturday 9:00 am to 4:30 pm

Saturday Walk-in Hours
9:00 am to 12:00 noon
No Appointment Necessary (Therapy only. No medication management)

Free Screenings
Free, confidential screenings for anxiety and depression for ages 13+. Stop in 9 a.m. – 8 p.m. Monday – Friday
No Appointment Necessary