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The Joint Chiropractic

The Joint Chiropractic - National City

a Verified Patient Rating
$ 29 * Initial Visit Includes consultation, exam & adjustment

The Joint Chiropractic - National City, California

Welcome to The Joint Chiropractic - National City! As your National City chiropractor dedicated to family chiropractic and spine health, we invite you to join the millions of Americans who have not only found relief from lower back pain, sciatica pain, and migraines, but also a pathway to wellness with chiropractic's natural, drug-free approach to healthcare.

How can chiropractors at The Joint Chiropractic in National City help you?

Whether you have seen a chiropractor in the past or are seeking a local chiropractor near you for the first time, expect your visit to The Joint Chiropractic - National City to be different from any healthcare experience you've had before. Perhaps even life-changing.

Here are a few reasons why The Joint Chiropractic in National City is your perfect destination for pain relief and preventative care:

  • Conveniently Located
  • Open Nights & Weekends
  • No Appointments Required
  • No Insurance Hassles, Requirements or Copays
  • Quality Chiropractic Care by Licensed Professionals
  • Affordable Personalized Care Plans

As you can see, chiropractic care provided by the licensed chiropractors at The Joint offers you and your family an affordable, convenient and accessible solution like no other.

How can routine chiropractic care help improve your quality of life?

Through manual manipulation of the spine delivered to the highest standards by licensed chiropractors, chiropractic care works to restore and maintain proper communication from your brain to your body by relieving what chiropractors refer to as a subluxation, or a misalignment, of the spine. Restoring proper alignment to the spine can assist with pain relief and prevention of:

  • Lower Back Pain
  • Upper Back Pain
  • Neck Pain
  • Migraine and Tension Headaches
  • Shoulder Pain and Elbow Pain
  • Knee, Foot and Ankle Pain
  • Sciatica
  • Chronic Injuries
  • And More!

So whatever “symptoms” you or your family may be experiencing, visit our National City chiropractic office today to learn more about how you could improve your overall health and well-being. And remember, you never need an appointment to visit, so stop in when it is convenient for you. We look forward to seeing you soon!

Meet The Doctors

Dr. C.J. Jarvis, D.C. is a Chiropractor at National City

We would like to welcome Dr. Cj Jarvis to The Joint Chiropractic. Dr. CJ has been with The Joint Chiropractic since Sept 2020 before that she was working in a private chiropractic center in Alameda Ca. Dr. Cj is originally from the San Francisco Bay area she moved to San Diego to be closer to family. Cj graduated with a BS in kinesiology from Temple University her area of studies were sports and exercise science. She went on to get her Doctor of Chiropractic degree from Life Chiropractic West.

Dr. Cj knew being a chiropractor would be her calling when she was a junior in college going to her own chiropractor and watching them interact with their patients, she knew that is exactly what she wanted to do. “The best thing about being a chiropractor is you get to help people utilize their body’s own ability to heal itself. You’re often the best part of your patient’s day!”

On Cj’s spare time she enjoys enjoys watching and playing soccer, various forms of exercise and baking everything from sourdough to cakes.

What’s the coolest thing you’ve ever done, and why is it so cool? I competed in the Scottish Heavy Athletics (where you wear a kilt, and you do the caber toss and such) for a few years across Northern California. It’s an incredible sport to be part of-especially since I am, in fact, Scottish. Being part of such an old tradition is a really cool experience. Plus, it’s fun!

Please give us a call or check social media for Cj’s current schedule.

Dr. Marisa Boelk, D.C. is a Chiropractor at National City

Dr. Marisa Boelk D.C., Doctor of Chiropractic joined The Joint in 2017 She is happy to be a member of the team for The Joint Chiropractic location in San Diego, Dr Boelk feels working with the staff and the owners of the team has been such a positive and encouraging experience. “There is a sense of real caring here we all work hard to do our best.”

Dr. Boelk or Dr. Marisa as her patients call her graduated from U.C. Berkeley with a degree in Integrative Biology in 2000 before getting her doctorate in Chiropractic in 2003. From the time Dr. Boelk was 15 years old, Chiropractic has been part of her regular routine, at first to recover from an injury, and later to stay healthy and active. “The best thing about being a chiropractor for me is being able to use my skills and knowledge to help patients feel better and have better life experiences as a result.”

Dr. Boelk grew up in San Diego, originally born in Mexico, she is fluent in Spanish. She is married to her husband that she met in graduate school who she says is a “very lovely guy” they have 2 children together a 10-year-old son and a 11-year-old daughter. When asked what’s the one thing in your fridge that you must have? Dr. Boelk stated “Lately, we seem to be on a kombucha and fizzy water kick at home, there is without a doubt an open container of both throughout the house all day.”

Favorite Experiences: Some of my favorite experiences are the ones we have spent laughing and traveling with our family and friends. A road trip to the Grand Canyon is my most recent bucket list item checked off, it was beautiful and the hours driving there were full of singing 80’s and 90’s songs and laughing to the point of tears.

Dr. Jason Vanderford, D.C. is a Chiropractor at National City

Dr. Jason Vanderford DC, DACBR, has been with The Joint Chiropractic since 2018 he is happy to join The Joint Chiropractic helping people with their health in the Clairemont/Kearny Mesa area of San Diego.

Dr. Jason graduated 1993 from UC Riverside and 1997 LACC Chiropractic College. Dr. Jason comes to this location with his extensive skills as a Chiropractic Radiologist. Prior to working for The Joint Dr. Jason was a peer review contractor, a Radiologist Contractor and assistant professor and diagnostic imagining residency director of Parker College of Chiropractic in Dallas Texas.

Dr. Jason feels the best thing about being a chiropractor at The Joint Chiropractic is he gets to put his whole education to work actively helping people with their health using his hands.

“I like seeing the power of the adjustment on a daily basis. Those who come to us, get a traditional chiropractic adjustment without other things that might confuse where the effect came from.”

Dr. Jason is married to his wife Darla who is also a chiropractor they are parents to a 5-year-old daughter. On his spare time, he enjoys spending time with his family, camping, reading, board games and martial arts.

Dr. Camille Masica, D.C. is a Chiropractor at National City

Dr. Camille Masica or Dr. Cam as her patients call her is an advocate for her patients health.

She not only focusses on adjustments but on there total well being by recommending stretches and workouts in order to function at their fullest capacity. Fitness is her passion not only has she run many 5Ks and half marathons, Dr. Cam is working on her first power lifting competition this year.

Dr. Cam believes in giving back she has volunteered for TESOL for 3 years where she was able to teach underprivileged children in urban villages and orphanages .

Dr. Cam on her days off she enjoys being with her family and working on expanding her knowledge in fitness

Dr. Alex Kamsi, D.C. is a Chiropractor at National City

Dr. Alex Kamsi, or Dr. Alex as his patients call him graduated from Cleveland Chiropractic College with a Doctor of Chiropractic degree in 2001. Besides working in private practice for over 20 years Dr. Alex has been with The Joint Chiropractic since 2012, currently he works for The Joint National City and The Joint Kearny Mesa. “The best thing about being in the Chiropractic field is being able to put a smile on a patients face and helping the body heal itself.” Dr. Kamsi grew up in Spain where he began his love for Soccer. An ankle injury at a soccer game started his interest in being a Chiropractor where a “Chiro” was able to fix his injured ankle after 1 adjustment. Besides caring for his chiropractic family of patients Dr. Kamsi enjoys spending time with his 2 sons.

Dr. Jeff Geil, D.C. is a Chiropractor at National City

Dr. Jeff Geil is a UCSD grad where his major was microbiology, he went on to LACC (Los Angeles College of Chiropractic) there he received his Doctor of Chiropractic degree in 1999.

Dr. Geil is a Native San Diegan born, raised, and educated. He has worked throughout his career right here in San Diego County. He joined The Joint family in 2016 in Encinitas and since 2018 He has been a familiar face in Eastlake, Mission Valley and now he finds his home in The Joint National City Fridays, The Joint Kearny Mesa Tue, Weds and Saturday.

Dr. Geil feels the best thing about being a Chiropractor is that it taught him how to take care of himself and others. It gives him the greatest satisfaction figuring out body aches and pains that doctors can’t explain.

Dr. Geil has 3 Children, 23-year-old son and 2 daughters 21&17. Currently he has no pets but in the past his house was filled with cats, dogs, fish, reptiles, and birds. In his spare time, he enjoys nature, walks sports and watching good movies.

The coolest things he has done are Sky Diving and Scuba Diving… Other Worldy!!!

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Wellness Plans

Receive up to 4 visits per month.

Best Value




Best Value



Wellness Plan Details +
Wellness Plan Details - Adult Youth
Visits per month up to 4 up to 4
Additional visits $ 10 $ 10
Cost Per visit < $23 < $13
Savings (vs single visit) 50% 72%

Unable to commit to regular visits? Packages offer flexibility for patients who expect to visit on average 2 times or less per month.

6 Visits



10 Visits



20 Visits


Package Details +
Package Details - 6 Visits 10 Visits 20 Visits
Total Visits 6 10 20
Visit expire Expire after 60 mo. Expire after 60 mo. Expire after 60 mo.
Cost Per visit < $35 < $30 < $25
Savings (vs single visit) 22% 33% 44%
Single Visits

Prefer to pay on the go? Don't worry! Our single visit rates still provide an affordable and flexible solution to help you receive the care you need, when you need it.

Initial Visit



Single Visits


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This clinic is owned and operated by Sahagun Chiropractic PC and managed by Last Lap, INC
Did You Know?

In a recent Consumer Reports study, chiropractic outperformed prescription medication, deep-tissue massage, yoga, pilates, and over-the-counter medication therapies, in treating back pain. 1

1 Consumer Reports Health Ratings Center. Back-Pain Treatments.; July 2011.

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$29 New Patient Special, Consultation | Exam | Adjustment

Offer valued at $45. Valid for new patients only. See clinic for chiropractor(s)' name and license info. Clinics managed and/or owned by franchisee or Prof. Corps. Restrictions may apply to Medicare eligible patients. Individual results may vary.