Meet the Team
Dr. Douglas A. Di Siena, B.Sc., D.C., IDE, QME, FICA, C.N.S.
- 1984: Doctor of Chiropractic
Cleveland college of Chiropractic
- 1984: Invited into “Who’s Who in American Colleges and Universities”
- 2003: Qualified Medical Examiner (QME)
- 2003: Independent Disability Evaluator (IDE)
- 2007: Certified Physician Provider Therapeutic Life Style Change Educator (CLE)
- 2008: Certified Corporate Health Coach (CCHC)
- 2012: Board Certificated Nutrition Specialist (BCNS)
- 1986 – Present: Private practice and Director of DiSiena Family Chiropractic Wellness and Nutrition Group, Irvine, CA.
Currently staffed with five Doctors, two Life-Style Educators and a Certified Massage Therapist.
- 1995 – 2005: Corporate Wellness Doctor for Rancho Capistrano Retreat & Church Center
- 2000 – 2005: Served as a High School Sports Injury Chiropractic doctor at Saddleback Valley Christian High School
- 1984 – 1986: Associate in Hedgecock & Associates Chiropractic in Newport Beach, CA
- 1989: Co-Founded Renaissance Corporate Wellness Fairs bringing “wellness” screenings and lectures to industry
- 1991: Founded Orange County Chiropractic Fellowship, speaking monthly to a gathering of chiropractors, paraprofessionals and their families
- 1996—2006: Co-Keynote Speaker at Possibility Living Wellness Seminars; published co-author with Robert A. Schuller of the best seller, Possibility Living: Add Years to Your Life and Life to Your Years with God’s Health Plan, HarperCollins, 2000. Literary review from Publishers Weekly, “DiSiena’s thoughts about the Spirit’s healing power are helpful and similar to those of Andrew Weil. He echoes … many other health professionals when he admonishes readers to exercise regularly and to eat more vegetables and fewer processed foods … DiSiena writes compellingly about these topics, as well as about his own gift of healing, and as such deserves his own book…” (October, 2000, Copyright, Cahners Business Information)
- Ongoing: Regular Lecturer at Chiropractic Colleges
- Ongoing: Regular Lecturer to doctors on nutrition and lifestyle management
- International Chiropractic Association (ICA)
- International Chiropractic Pediatric Association
- Inducted into “Who’s Who in Small Businesses”
- Founder of multi-doctor Chiropractic/Wellness Center
- Director/Founder of the Orange County Chiropractic Fellowship
- Past President of the Golden State Chiropractic Association
- Past Representative Assemblyman to the International Chiropractic Association (ICA)
- Served as Corporate Wellness doctor for over ten ears
- Past Ministering Elder/Board Member at Rancho Capistrano Community Church
- Past Board Member and Secretary of the Board at Ocean Hills Community Church
- Past Chairman and President of Saddleback Valley Christian School
- Family Chiropractic Special Service Award
- Therapeutic Lifestyle Changes Center for Excellence for StopChronicDisease.com
- Assembly Representative Distinguished Service Award (International Chiropractic Association)
- Distinguished Fellow of the International Chiropractic Association (FICA)
- Top LA Times Reader Poll OC Chiropractor 2018, 2019, 2020
Dr. Brian Harbin D.C. , F.M.T., T.P.I.
I grew up with a passion for sports. I played every sport I could. I believed I was going to be a professional athlete. After graduating high school, I pursued collegiate football and because of my passion for sports and the human body, I started on the path towards a career as an athletic trainer. After just one year in the program, I felt lost because I knew this wasn’t the career path for me. During this time, as I was trying to figure out what I wanted to do with my life, my relationship with my girlfriend became serious. Her father began telling me that if I wanted to marry his daughter, I had to go to chiropractic school. I knew he was teasing me, but those words kindled a fire. I proposed to his daughter,, and even though I had no idea what chiropractic really was, I enrolled in chiropractic school that next year. After marrying her, my journey into my new career began.
During Chiropractic College, I learned the mechanics of an adjustment. I thought chiropractic was about moving bones, musculoskeletal, and pain-driven. I had yet to learn the true principle of this profession. As I was in school, my father-in-law started sharing the philosophy with me. My eyes began to open, and I began to understand the true meaning of chiropractic.
I began falling in love with this new path I chose! During my final year in school, I started a mentorship at our office, and instantly witnessed healing! Now that I am practicing, I get to be a part of these miracles. I have seen babies suffering from colic, unable to latch, or suffering from constipation and after just a couple of adjustments, these babies are calm, thriving, and pooping! I have seen children come in with “ADHD”, on the spectrum, not making eye contact, not focusing in school. After coming in to get adjusted for a couple of weeks/months, they are focused, excelling in school, and making eye contact! I have seen adults who are HOPELESS, depressed, and in chronic pain. They come into the office and begin care, and after a few weeks or months they begin feeling better, they start having hope, and I see their entire life change! They are smiling, laughing, and are no longer in pain. The chronic pain they suffered from for years is gone, and they are vibrating at a higher level.
“WITH CHIROPRACTIC, I FOUND MY LIFE PASSION,” Dr. Harbin.
Dr. Grace Konstanzer D.C., M.A.T.
From a very young age, I fell in love with sports and any sort of athletic competition where I could discover limitations, and then work to break through them. Every time I put on my cleats and stepped onto the soccer field, or jumped in the water on a cold morning for swim team, all that mattered was the present moment I was in. My head would be completely clear, I would feel a light fluttering in my gut, and I was ready to give whatever sport I was playing everything I had. I did not understand what I was experiencing then, but now I know that I was experiencing what many athletes call being “in the zone.” It is when you have complete focus, and your training, talent, and practiced technique harmonize. It is when your passion comes alive. It is when your mind, body and soul synchronize and you allow the Holy Spirit to be in complete control of the moment. You become the vessel through which the power of life is expressed in its highest form. I experienced this over and over again through sports. And it wasn’t long until I discovered I could access this power and state of being at any time. I applied it to my schoolwork and excelled. I applied it to my relationships and they flourished. I entered “the zone” whenever I could. The zone is where you are full, perfect, and complete, where limits do not exist, and love conquers all. Experiencing “the zone” would be a practice I would dedicate my life to learning and teaching others, but I didn’t know that yet.
In high school, I was introduced to volleyball. I fell in love. I participated in some of the most competitive games on the top teams in Southern California. I had training from the top coaches in my area, and like I knew how to do best, I gave the sport everything I had. I played artistically. As high school came to a close and it was time to move on to college, I was recruited by multiple colleges with excellent athletic programs. After visiting the United States Air Force Academy, I knew that was where I would go. It was more than top-of-the-line athletic trainers and coaches, a dedicated team, and an incredible training facility- it was the opportunity to be a part of something bigger than myself. It was to give back to my country through service. It was to step forward and offer my talents, gifts, and abilities for the sake of protecting our God-given freedom.
The United States Air Force Academy is known for how challenging it is, and I excelled. After two years I was offered not only a scholarship to play volleyball at Vanguard Christian University in Southern California, I was also offered an academic scholarship and an additional athletic scholarship to play water polo and swim as well. I jumped at the chance. It meant that I would have more opportunities to enter into “the zone.” It meant I could find more limits to surpass in not only volleyball but also water polo and swim. After one year at Vanguard University, my athletic scholarship was increased. I was a valuable asset to a team that finished 14th in the nation. What an incredible experience with an amazing group of Christian women.
After graduating from Vanguard University with BA in Psychology, I was recruited for a sales representative position at E&J Gallo Winery. It was a great position to introduce me to the ‘real’ world after school, but it soon became apparent that I was called to do something more meaningful. While on my search to find my career, I was given the opportunity to teach physics and special education for adults class at a home school in Dana Point. I loved connecting with and teaching others. It didn’t matter their age or mental abilities. It was creating a space where the community could thrive and learning could take place that I was attracted to. It was helping others achieve their highest potential that excited me. I soon decided that being a teacher was my path, so I applied, was accepted, and attended Pepperdine University of Higher Education where I received my Masters in Teaching. I was set to teach in a school setting, but apparently, God had a different plan.
About halfway through my time at Pepperdine University, I was sitting at a dead stop in traffic on the freeway on my way home. I looked in my rear-view mirror and saw a car coming up behind me at full speed. The driver put on the brakes but it was too late, and she collided with me. My first choice was to go straight to my family Chiropractor, Dr. DiSiena, who I had always seen growing up. He informed me that I sprained ligaments in my neck and that I would need to be seen on an intensive care program. In the process of healing, I learned a lot about how the body heals, how the body functions, and the primordial role of the central nervous system. It was Dr. DiSiena’s compassionate care for me and inspired words of teaching that unveiled an incredible revelation. “The zone,” that I had discovered when I was young and so passionately and frequently visited throughout my life, is accessed through the central nervous system. It is the central nervous system that gives an otherwise lifeless body expression. And it is through chiropractic care that we can release the power of this expression to its fullest manifestation. It is the freeing of the central nervous system that gives us access to an intangible, creative, and omnipotent force- the expression of life in its highest form. The synchronization of mind body and spirit. The harmony of God is expressed through man.
I had half of a year left at Pepperdine University, but at that point, I knew I would not just be a school teacher. I would finish my time at Pepperdine, receiving my Masters in Teaching and then I would go further to get my Doctorate in Chiropractic. My life work would allow me to go beyond the teaching of basic education and into the teaching of the laws of life, what causes sickness, what causes wellness, and how to live an entire life without ever leaving the zone.
“The master maker of the human body did not create you and then run off and leave you masterless. He stayed on the job as innate, as the fellow within, as nerve transmission controlling every function of life, as spirit from above-down, inside-out, expressing, creating, exploring, directing you in every field and phase of experience so that your home is truly the world and the world is your home.” -B.J. Palmer
The Spirit of the Lord is upon me, and he has anointed me to be hope for the poor, healing for the brokenhearted, and new eyes for the blind, and to preach to prisoners, “You are set free!’ I have come to share the message of Jubilee, for the time of God’s great acceptance has begun. Luke 4:18-19
Dr. Douglas M. Hackman D.C.
- 1980-1984 Doctor of Chiropractic Cleveland Chiropractic College Magna Cum Laude
- 1984 Invited into “Who’s Who in American Colleges and Universities”
- 1975-1979 Undergraduate studies in Chemical Engineering at Vincennes and Purdue Universities
- Ongoing Continuing Education in radiology, various Chiropractic techniques and philosophy
- 1989-present Private practice Di Siena Family Chiropractic Centre Irvine, CA
- 1986-1989 Associate in group practice Corona del Mar, CA
- 1984-1986 Associate in group practice Newport Beach, CA
- Other Experience
- 1989 Assisted Renaissance Corporate Wellness Fairs in bringing “wellness’ screenings and lectures to local industry
- 1992 Co-founded Orange County Chiropractic Fellowship meetings for Chiropractors, paraprofessionals and their families
International Chiropractic Association
- Preceptor faculty member Los Angeles College of Chiropractic
- Assistant director of the Orange County Chiropractic Fellowship
- Core member and a committee chairman for the Health care Ministry for Saddleback Valley Community Church
- Board Member Doctor’s Injury Network
- Community Service/ Activities
- Community Health Fairs for major corporations in Orange County
- Member of Saddleback Valley Community Church first aid team
- Set-up and coordinate Health Fairs and Blood drives for Saddleback
- Chiropractor for Medical Mission Trips to Mexico
- Speaker for Orange County Wellness Coalition
Cycling, Camping, Hiking and any outdoor sport