About our Staff

Dennis C. Cavenah, MS, LPC, LMFT, CEAP

Dennis Cavenah graduated from Emporia State University, Emporia, Kansas, with both a Bachelor’s and a Master’s degree in Psychology.

He has been a practicing counselor since 1975.  Experience includes treating depression and anxiety and providing marriage and family therapy along with late-stage recovery concerns.  Mr. Cavenah is also experienced and qualified in critical stress debriefing.  Accreditations and Licenses included:


Licensed Professional Counselor (LPC)

Licensed Marriage and Family Therapist (LMFT)

Certified Employee Assistance

Professional (CEAP)

Substance Abuse Professional (SAP)

Dennis is currently accepting appointments on Tuesday mornings only.

Penny R Miller, MS, LPC

Penny Miller graduated from Langston University, Tulsa, OK with a Bachelor’s in Psychology and a Master’s degree in Rehabilitation Counseling.  Penny Miller is a veteran of the United States Army where she served four years active duty as an Electronic Warfare Signal Analyst, Korean Linguist; she also served four years in the active reserves as a Civil Affairs Specialist.

She has been a practicing at Riverside since 2006 where she began as an intern and was subsequently offered a position on the staff.   She currently teaches psychology classes at Langston University at Tulsa, and Bacone College in Muskogee.  Experience includes treating depression, anxiety, Post Traumatic Stress Disorder as well as providing marriage and family therapy. 

Penny offers appointments Monday through Saturday, as well as some evenings. She is currently a provider for : Aetna, BCBS, MHNet, Tricare, HealthChoice, Life Services EAP, and New Directions EAP. 

Learn more about Penny at http://www.linkedin.com/in/prott


Licensed Professional Counselor  (LPC)