Doctors & Staff Psychiatrist

Oasis is proud of the professional staff of psychiatrists, psychologists, and therapists that choose to work at our clinic.  We have  psychiatrists with specialties from geriatric psychiatry to child and adolescent psychiatry.

Our intake staff will match you with a provider that meets your care and scheduling needs.

Psychiatry and Pharmacology | Psychology and Counseling | Support Staff

Psychiatry and Pharmacology

Olayinka Johnson

Olayinka Johnson, MD

Olayinka Johnson, M.D.

Psychiatrist, Board Certified in both General Psychiatry and Geriatric Psychiatry

Education

  • MD, University of Ibadan

Additional Information

  • In practice for 14+ years
  • Works with ages 13 through adult
  • Specializes in Geriatric Psychiatry
  • Fluent in Yoruba and Hausa

  

Victoria Tyson, CRNP

Victoria Tyson, CRNP

Nurse Practitioner, Board Certified as a Psychiatric Nurse

Education

  • University of Maryland

Additional Information

  • Substance Abuse
  • Co-Occurring Disorders
  • PTSD
  • Women’s Issues
  • Works with ages 18 and up

 

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Grace Akinpetide, CRNP

Grace Akinpetide, CRNP

Board Certified Psychiatric Nurse Practitioner

Education

  • University of Arizona
  • Howard University in Washington D.C. 

 

Additional Information

  • Works with ages 13 and up

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Christy Callahan, CRNP

Christy Callahan, CRNP

Board Certified Psychiatric-Mental Health Nurse Practitioner

Education

  • Drexel University College
  • University of Maryland School of Nursing
  • Anne Arundel Community College

Additional Information

  • Works with ages 5 and up

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Edner Charles, CRNP

Edner Charles, CRNP

Board Certified Psychiatric-Mental Health Nurse Practitioner

Education

  • University of South Carolina
  • University of Cincinnati – Masters in Nursing

Additional Information

  • Works with ages 18 and up