We deliver the highest standards of addiction medicine and psychiatry to treatment programs

Our team is passionate about providing high quality addiction medicine and psychiatric services to treatment programs.  Our approach: recruit the best and brightest addiction medicine professionals to deliver the highest level of treatment in the industry at a cost that is difficult to beat. 


Our services are reliable, responsive, personable, and evidenced based.  Most of our providers carry multiple board certifications in psychiatry, addiction medicine and family medicine.

Simply put, no other medical group can match our expertise or the level of service we deliver to treatment programs. Thank you for visiting our website, and please reach out.  We would love the opportunity to show you how we can bring patient care at your program to the next level.


We Service Addiction and Mental Health Programs with            Care, Professionalism, and Unmatched Expertise


Reliable and Responsive


Prompt patient evaluations prevent AMA events, raise patient satisfaction, and meet insurance mandates

Team Approach


Regular collaboration with therapists and other treatment staff improves patient outcomes

We're Personable


We pride ourselves on providing good customer service to both patients and staff.  Good bedside manner is at the heart of what we do.

Billing Support


Comprehensive, quickly delivered documentation to support insurance mandates.  Peer review calls and utilization revew support

Cost Effective


Your program will save money AND receive better service and support working with our group

 Education and Training


We provide ongoing training and education to your treatment staff related to medical protocols and patient management.  Access to Headlands treatment protocols guide.  



We use the latest technology to make treatment services accessible to underserved communities or locales where there is a shortage of professional mental health providers  



Years of Combined Experience




Patients Treated

Master Certifications

Happy Staff


Jena Horn, BBA

Operations Manager

Jena has several years of experience in operations, human resources, business administration and management.  She is a graduate of the Univerity of New Mexico.  She brings excellent customer service, organization, and liaison/support to our program partners every day.

Stefani LaFrenierre, MD 

 Psychiatry Director

Dr. LaFrenierre received her medical degree at University of California, Los Angeles and completed her psychiatry residency at San Mateo Behavioral Health and Recovery Services. She also completed a fellowship through the Harvard Program on Refugee Trauma, and has expertise in the treatment of PTSD, veteran and refugee populations. She is board-certified in Adult psychiatry, and board-eligible in the specialty of Addiction Medicine. She has had a variety of specialty training experiences in addiction, geriatric and forensic psychiatry, and is committed to providing empathic and comprehensive care to her patients.

Chris Small, M.D

Addiction Psychiatrist, President Headlands ATS

Dr. Small received his medical degree at the University of Hawaii.  He completed his medical residency in Psychiatry and Family Medicine at UCSD.  He is board certified in Psychiatry, Addiction Medicine, and Family Medicine.  Dr. Small is passionate about bringing quality care to patients suffering with addiction.

Kelly Mullins, PMHNP

Advanced Practice Supervisor

Kelly has a long history of service.  She served as an Army Healthcare Specialist and medic in Iraq and Honduras and as an RN at UCSD prior to achieving her designation as a Family Nurse Practitioner from Azusa Pacific University and Psychiatric Family Nurse Practitioner at University of Cincinnati.  She has extensive experience in primary care, psychiatry and addiction medicine.

Amanda Ghamsari, BSN

Quality Assurance RN 

Amanda completed her nursing degree at the University of Louisiana at Lafayette.  She has a decade of experience in the field of nursing ranging from chemical dependency, mental health, neurology, and occupational medicine

Diana Pasquarello, PA

Physician Assistant

Diana has 17 years of experience as a Physician Assistant in primary care and addiction medicine.  Diana completed her undergraduate degree at UCSD and received her Master’s in Physician Assistant in 2003 from USC.  She is passionate about improving access to Medication Assistant Treatment (MAT) in patients suffering from opiate dependence.

Olga Jackson, FNP-BC

Family Health Nurse Practitioner

Olga has 10 years of nursing experience, receiving her RN in 2011 and Family Nurse Practitioner designation in 2018 from South University.  She has extensive experience in behavioral health and addiction medicine.  She is currently participating in her clinical requirements for PMHNP designation.

Debra Lloyd, PMHNP

Psychiatric Nurse Practitioner

Debra has devoted her entire nursing career to working with psychiatric and chemically dependent patients.  She is a graduate of Mount St. Mary's college and received her Masters degree at Maryville University.   In addition to her certification as a psychiatric nurse practitioner, Debra carries certifications in addiction nursing (CARN) and public health nursing (PHN). 

Carrie Friedman, RN, MSN, FNP-BC

Family Nurse Practitioner

Carrie worked as a Registered Nurse for over 15 years before receiving her Masters of Science degree as a Family Nurse Practitioner from Gonzaga University in 2014. She is currently in the Psychiatric Mental Health Nurse Practitioner program at Gonzaga. Carrie Strives to build a strong relationship with her patients built on trust, creating a safe environment to address both medical and mental health goals. 

Megan Duggins, SHRM-CP

Human Resources Manager

Megan brings to Headlands extensive experience as a human resources representative at the University  of Chicago and as an advocate/outreach director for disadvantaged children.  She holds a masters degree in Industrial Organizational Psychology from Emporia State University.

Halee Fullerton, PMHNP

Psychiatric Nurse Practitioner

Halee obtained her nursing at the University of Texas at Arlington, and her masters in psychiatric nursing in 2018 at the University of Missouri- Kansas City. Her nursing experience includes 8 years of ER, ICU, med-surg, and dementia unit service. Prior to joining Headlands, Halee provided psychiatric services in the community health setting for children, adolescents and adults.

Jordan Wong, PA

Physician Assistant

Ian Johnson, MD


Jordan has experience in emergency medicine, primary care, and addiction medicine. He has been working in addiction medicine since 2011. Born and raised in NYC, Jordan has always had a heart for working with the under-served population. He became a National Health Service Corps scholar who worked in Opioid Treatment Program in the Bronx. Jordan provided medication assisted treatment and primary care services including HIV and Hep C Treatment.

Dr. Johnson received his medical degree from the State University of New York Upstate Medical Center. He is board certified in Family Medicine and board eligible in Addiction Medicine. Dr. Johnson has had a varied career which includes services as a flight surgeon in the US Air Force and a combat life support instructor in the US Army Reserves. In civilian practice he has served as medical director at community clinics and at various substance abuse detox and residential facilities. Dr. Johnson is the founder of Archway Healthcare Services. He has a passion for quality assurance and quality improvement at all levels of client care. 

Mari Hanson, PA-C 

Physician Assistant CAQ Psychiatry

Mari has 19 years of experience as a Physician Assistant. She has a diverse background in medicine which includes Primary Care, Integrative Medicine,  Psychiatry and Addiction medicine and Hepatitis C treatment. She graduated from Red Rocks Community College Physician Assistant program in Lakewood, Colorado in 2001. She obtained her Certificate of Added Qualification in Psychiatry in 2020.

John Hosley, PA

Physician Assistant

John completed his undergraduate work at UC Davis and Master Degree of Physician Assistant Studies at University of the Pacific. A long time resident of the Sacramento area, John is committed to providing excellent, compassionate patient care in his community.

Carrie Starkey 

Office Associate 

Carrie brings several years of experience in human resources with a focus in staff development and learning management.  She holds a Masters degree in Industrial and Organizational Psychology from Emporia State University. 




“Super reliable and professional. Quick turn around”

San Diego Outpatient Program

“Our program is running really well since Dr. Small and his team came on board. Clients and staff feel supported”

Riverside California Detox Program


"We always feel like our clients are in good hands"

Northern California Residenial Program



Our Address

215 South Hickory St. Suite 114

Escondido, CA 92025

info@headlandsats.com \\ Tel: 760-704-9429

Opening Hours

Monday – Friday  08:00AM – 04:00PM

(All times are in PST)


Is your treatment program interested in working with the best medical team in the industry?  Please give us a call! 760-704-9429 

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