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Our Team



We’ve assembled a highly-credentialed team of doctors, therapists, and specialists. They have collectively worked with thousands of clients throughout their careers in helping adolescents and young adults struggling with drug and alcohol abuse and/or mental health issues like depression, and anxiety.

We firmly believe a highly experienced, dedicated team with a passion for working with teens and young adults is the single most important piece of a program. Our team is fully committed to our mission of relentlessly pursuing successful clinical outcomes.

Our Leadership Team

Dianna Sandoval, LPC, LAC
Executive Clinical Director

Dianna has over 20 years of clinical experience working with adolescents and young adults, and has a Masters of Arts in Psychology from Regis University. 

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Dr. Nathan Moore, MD
Medical Director, Colorado Springs & Cascade Canyon

Dr. Nathan Moore is Board-certified by the American Board of Family Medicine. Dr. Moore attended attended Duke University School of Medicine and obtained his M.D. in 1995.

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Dr. Jennifer Montague
Medical Director, Colorado Springs Detox Center

Dr. Montague currently serves as the Colorado Springs Detox Center's Medical Director.

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Dr. Alfonso Cappa, Psy. D
Licensed Clinical Psychologist, Colorado Springs

Dr. Alfonso Cappa is Sandstone Care's Licensed Clinical Psychologist who focuses on comprehensive psychological testing and evaluation of clients.

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Sherry McAtee, MHA, MS, BSN, RN, CRNP-PMH, PMHNP-BC, FACCP, MAJ (RET) USAF
Psychiatric Nurse Practitioner, North Bethesda

Sherry is our team’s Psychiatric Nurse Practitioner, with 32 years experience in healthcare.

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Savanna Klippel, APRN, FNP-BC
Family Nurse Practitioner, Colorado Springs Detox Center & Cascade Canyon Teen Residential

Savanna currently serves as the Family Nurse Practitioner for Colorado Springs Detox Center & Cascade Canyon Teen Residential. 

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William Lawson, MD
Medical Director, North Bethesda

William Lawson serves as the Medical Director for Sandstone Care's North Bethesda facility. 

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Brannon Pruet, PhD-c, LPC, CAC II
Program Director, Denver

Brannon is a Licensed Professional Counselor and Certified Addiction Counselor Il, and recently completed his Doctorate of Philosophy in Psychology.

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Sarah Fletcher, LPC, CAC II
Training & Development Director

Sarah earned her Masters degree in Rehabilitation Counseling with a specialization in substance use disorder from Southern Illinois University in Carbondale.

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Casey Cherry, LPC, LAC
Program Director, Colorado Springs Outpatient Center

Casey is a Licensed Professional Counselor and Licensed Addiction Counselor.

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Kevin Barwick, LCPC-S
Program Director, North Bethesda

He has graduate and post-graduate degrees and training in Mental Health from the University of Maryland and Bowie State University.

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Jon Judge, LCPC, NCC
Primary Therapist, North Bethesda

Jon Judge is a Licensed Clinical Professional Counselor and works as a young adult therapist at Sandstone Care.

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D'ri Jones, LCSW, CAC III
Primary Therapist, Denver

D'ri is a Licensed Clinical Social Worker and a Certified Addictions Counselor, Level III.

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Peter King, LCPC
Primary Family Therapist, North Bethesda

Peter currently serves as a Primary Family Therapist at Sandstone Care's Bethesda, Maryland location.

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Annabella Cordova-Barnes, M.A., LPCC
Program Director, Boulder

Annabella is the program director for Sandstone Care's Denver and Broomfield locations.

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Kerry Mahoney, LCSW, CAC III
Primary Therapist, Denver

Kerry is a Licensed Clinical Social Work and Licensed Addiction Counselor Level III.

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Samantha Miller, LPCC
Primary Therapist, Boulder

Sami works as the adolescent primary therapist at Sandstone Care's Boulder location. 

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Michelle Pelle, LSW
Primary Family Therapist, Denver & Boulder

Michelle facilitates family programming, including the multi-family group, and family therapy between the Denver and Boulder locations.

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Nina Davachi, LGPC
Primary Therapist, North Bethesda

Nina is a Licensed Graduate Professional Counselor.

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Diane Houston, LPC, NCC
Addictions Counselor, Colorado Springs Detox Center

Diane is currently a Therapist at Sandstone Care supporting the Detox program at our Colorado Springs facility. She has over four years of clinical experience in individual and group therapy.

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Megan Johnson, MFT
Assessment & Intake Coordinator, Cascade Canyon Teen Residential

Megan currently works at Sandstone Care supporting the adolescent treatment program at our Colorado Springs facility.

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Kaley Chiles, LPC, LAC
Family Therapist, Cascade Canyon

Kaley runs her private practice and the family immersion program for Sandstone's Cascade Canyon adolescent residential facility.

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Dani Denver, MA, LPC Candidate
Primary Therapist, Denver

Dani currently serves as the primary therapist for the Denver PHP program.

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Stephanie Saavedra
Lead Behavioral Technician, Cascade Canyon

Through her personal experience in recovery, Stephanie has developed a caring passion for working with those who want to achieve sobriety.

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Anne Kahn, LPC, CAC II
Utilization Review & Intake Coordinator, Denver & Boulder

Anne is a Licensed Professional Counselor and a Certified Addiction Counsellor II.

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Ashley Whiting
Discharge Planner, Colorado Springs & Cascade Canyon

Ashley currently serves as the discharge planner for Colorado Springs Detox Center & Cascade Canyon Teen Residential.

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Glenn Gintz, CAC ll
Addiction Counselor, Cascade Canyon

Glenn is a Level II Certified Addiction Counselor with more than 5 years experience in individual as well as group therapy working with adults and adolescents.

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Tammy Deibert, RN
Charge Nurse, Colorado Springs

Tammy has over 12 years of experience in Adult and Geriatric, Stroke, Respiratory and two years of Psychiatric nursing.

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Trisha Johnson, LPCC, RYT
Primary Therapist, Denver

Trisha is an advocate for wellness and self-care and specializes in mindfulness meditation practices.

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William "Liam" Grafton III
Information Systems Administrator & Data Specialist

Liam currently serves as the Information Systems Administrator & Data Specialist across all of Sandstone Care's locations.

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Charlene St. Jean, MA
Academic & Vocational Specialist, North Bethesda

Charlene has over 25 years of experience has an educator.

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Priscilla Gonzalez, MA
Admissions Coordinator, All Locations

Priscilla currently serves as an Admissions Coordinator across all locations. She is the first point of contact for families and clients reaching out to Sandstone Care for support.

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Meg Wainwright, LCPC
Assessment & Intake Coordinator, North Bethesda

Meg is currently the intake and assessment coordinator for Sandstone Care.

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Kelly Swann
Admissions Coordinator, All Locations

Kelly is an Admissions Coordinator for Sandstone Care in the North Bethesda office.

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Jessica Jeffery
Clinical Outreach Ambassador, Greater Washington DC Area

Jessica Jeffery is a Montgomery County native, born and raised in Germantown, MD.

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Ben Sigley
Recovery Services Manager, All Locations

Ben is the house manager for our men's recovery living house in Denver, called Rally Point.

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Leilani Whitt
House Manager, Boulder

Leilani serves as the House Manager for the young adult women's program in Boulder, Colorado.

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Caleb Krull, CAC I
Compliance Manager, Colorado Springs

Caleb Krull is a Compliance Manager who has been working professionally in substance abuse since February 2016.

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Kaitlyn Mercy
Digital Marketing Associate

Kaitlyn is a Registered Yoga Teacher and working towards getting her CAC I.

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Todd Wilfawn
Residential Manager, Rally Point Denver

Todd is the house manager for our men's recovery living house in Denver, called Rally Point.

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Aaron Gawronsky
Residential Manager, Rally Point Rockville

Aaron is a residential manager at our men’s sober living house in Rockville, MD.

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Dan Cowles
Lead Behavioral Health Technician, Colorado Springs Detox Center

Daniel is a Colorado native and is currently a Lead Behavioral Health Technician at the Colorado Springs Detox Center.

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Travis Howieson
Lead Behavioral Health Technician, Colorado Springs

Travis currently works as a Behavioral Health Technician at our Colorado Springs location.

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Rowan Hill
Empowerment and Alumni Manager, Denver

Rowan is the first point of contact during the hiring and onboarding process for new staff members at Sandstone Care.

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Drew Powers, CAI-II, CSAC-A
Admissions & Business Development Manager, All Locations

A native of Northern Virginia, Andrew started his career in the behavioral health field just one year into his personal recovery from addiction.

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Jess Barry, BA
Clinical Outreach & Aftercare Planning Manager

Jess oversees outreach and aftercare planning for all of our Colorado locations. 

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Emily Grotheim
Recruiter, Denver

Emily is a Colorado native that has recently come home after spending the last 10 years in Minneapolis and Milwaukee.

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Walter Baker
Insurance Advocate Lead, Denver

Walter is our Insurance Advocate Lead and works in our Denver office.

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Luke Mattey
Accounting & Human Resources Associate

Luke began with Sandstone Care as an outreach ambassador, but is now serving as an accounting and human resources associate. 

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James Devenport
Healthcare Billing & Coding Specialist, All Locations

James currently serves as a healthcare billing & coding specialist across all our locations. 

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Daniel Tucker
Prep Cook & Delivery Driver, Colorado
Katie Pine
Senior Insurance Advocate, All Locations

Katie currently serves as a senior insurance advocate for all of our locations. She comes to us with four years of experience as a medical insurance biller and account manager.

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Rachel Ham
Admissions Assistant, All Locations

Rachel currently serves as an admissions assistant for all our locations. 

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Amanda Porter, LPC, LAC
Primary Therapist, Cascade Canyon Teen Residential

Amanda Porter currently serves as the Primary Therapist at Sandstone Care’s Adolescent Residential Program at Cascade Canyon.

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Marina Vidrine
Colorado Clinical Outreach Ambassador

Marina currently serves as the Colorado clinical outreach ambassador. 

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Tim Baker, CACI
Admissions Coordinator, All Locations

Tim currently services as an admissions coordinator and the first point of contact for the families that reach out to us at Sandstone Care.

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Smitty Jost
Executive Assistant

Smitty currently serves as an executive assistant and comes to us with over 30 years of varied administrative experiences, most of which took place in the mental health field.

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Matthew File
Insurance Advocate Specialist

Matthew is an Insurance Advocate Specialist with Sandstone Care and is extremely excited for what his future in recovery holds. 

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Tyler Riley, Certified Recovery Coach
House Manager

Tyler currently serves as a full time house manager in the Denver men's sober living home.

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Allie Van Ness
Culinary Services Manager

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