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.

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.

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

Christina Carmona, PMHNP

Psychiatric Nurse Practitioner

Christina attained Masters in Nursing certifications in Psychiatry from Florida State University and Nursing Leadership from University of Cincinnati.  She had extensive experience working in residential and outpatient addiction programs prior to joining Headlands in 2019.  Her strong clinical skills are enhanced by a natural ability to build rapport with patients and families.

Olga Jackson, FHNP

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.

Kelly Mullins, PMHNP

Psychiatric Nurse Practitioner

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.

Kevin Feig, M.D 

Addiction Specialist

Dr. Feig is attended medical school at New York Medical College. He completed his residency in Preventive Medicine and Public Health at State University of New York at Stony Brook. Dr. Feig is Board Certified in Addiction Medicine and General Preventive Medicine with eight years of Addiction Medicine experience.

Megan Duggins, SHRM-CP

Office Associate

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). 

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 University.

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.

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.

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.




“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

561 Saxony Place, Ste. 101

Encinitas, CA 92024

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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