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About Us

25+ years helping patients in Gaithersburg feel their best

Potomac Valley Chiropractic combines hands-on chiropractic care, rehab, and soft tissue work into one personalized, science-based plan — so you can get out of pain faster, with less effort on your part.

Meet the Doctors

Dr. Spiro Theodore, D.C.

Doctor of Chiropractic

Dr. Spiro Theodore, D.C.

Dr. Spiro Theodore brings decades of chiropractic experience to patients who want clear answers, hands-on care, and a practical plan for getting out of pain. His care style is built around understanding what is causing the problem first, then using the right combination of chiropractic treatment, soft tissue work, and rehabilitation modalities (delivered under his physical therapy privileges) to help each patient move better.

Graduate of Life University in Georgia
Over 20 years of chiropractic experience
Uses diversified adjustments, kinesiology, Activator methods, trigger point therapy, and myofascial release

Dr. Spiro provides:

  • Chiropractic adjustments, kinesiology, Activator methods, trigger point therapy, and myofascial release
  • Rehabilitation modalities under physical therapy privileges, including ultrasound, electrical stimulation, traction, and guided exercise
  • Helping patients understand what is happening, what can be done, and what to expect next

Experience and background

A graduate of Life University in Georgia, Dr. Theodore has more than 20 years of chiropractic experience and deep roots in Montgomery County as a Wootton High School graduate.

  • Physical therapy privileges with ultrasound, electrical stimulation, traction, and guided exercise support
  • Montgomery County native and Wootton High School graduate
Dr. Marvin Diaz, D.C., M.S.

Doctor of Chiropractic

Dr. Marvin Diaz, D.C., M.S.

Dr. Marvin Diaz focuses on helping patients recover, move better, and build strength through a combination of chiropractic care, physical rehabilitation, soft tissue work, and targeted exercise. His background in clinical nutrition, exercise science, and personal training gives patients a well-rounded approach that looks beyond short-term symptom relief.

Master of Science in Applied Clinical Nutrition
Physical therapy privileges
Sports chiropractic and physical rehabilitation focus

Dr. Diaz provides:

  • Sports chiropractic, physical rehabilitation, and movement-focused care
  • Adjustments, soft tissue work, and targeted rehab exercises matched to the patient
  • Helping patients stay active, improve function, and build a plan they can follow outside the office

Experience and background

Dr. Diaz holds a Master of Science in Applied Clinical Nutrition, has physical therapy privileges, and brings a strong background in Exercise Science and certified personal training.

  • Background in Exercise Science and certified personal training
  • Combines adjustments, soft tissue work, and targeted rehabilitation

What we do for you

Our doctors handle the plan, the treatment, and the recovery support — so you can focus on feeling great again.

  • Personalized chiropractic care, rehab, and soft tissue work
  • Clear explanations before any treatment decisions
  • A plan built around your goals, your schedule, and your life

Our care philosophy

Science-based, personalized, and supportive — built around understanding your symptoms and helping you move better, faster.

  • Evaluation before recommendations
  • Plans matched to your goals
  • Honest guidance and realistic expectations

Contact Potomac Valley Chiropractic

Ready to schedule your visit?

Call the office or schedule online. Our team can help with availability, insurance questions, and learn if we can help reduce your pain and feel your best.

Potomac Valley Chiropractic

12105 Darnestown Road, Suite L-8
Gaithersburg, MD 20878