Orthopedic GroupTelehealth
Atlantic Orthopaedics & Sports Medicine - Concussion Care
📍 Portsmouth
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Concussion specialist
John Cannon DC
📍 Portsmouth, New Hampshire · ✓ Listing verified 2026-07-11
About
John Cannon, DC is a Chiropractic specialist in Portsmouth, New Hampshire, with a subspecialty focus in Upper Cervical / Atlas Orthogonal. They see patients at Cannon Chiropractic. Their role there is Owner.
Concussion work here covers Post-Concussion Syndrome and Headache. In this directory the listing sits under Headache/Migraine and Chiropractic/Functional Neuro.
The practice sees adults.
Cannon Chiropractic is led by Dr. John Cannon, a board-certified Atlas Orthogonal chiropractor in Portsmouth, NH who focuses on precise upper cervical evaluation and gentle, low-force correction. He treats post-concussion symptoms associated with cervical spine injury, along with neck injuries and headaches, using a calibrated instrument that delivers light pressure rather than manual twisting or forceful adjustment of the neck.
Services
Headache/MigraineChiropractic/Functional Neuro
Clinical focus areas
ConcussionPost-Concussion SyndromeHeadache
Details
Provider typeChiropractor
SpecialtyChiropractic
PracticeCannon Chiropractic (Dr. John Cannon, Atlas Orthogonal)
RoleOwner
ServesAdult
Before your first appointment
Patients who contact John Cannon in Portsmouth usually want to be clear on a few things first:
- post-concussion syndrome treatment options — When symptoms outlast the expected window, and what actually shortens them.
- concussion headache treatment — Migraine-type, tension, neck-driven and rebound headaches need different treatment.
- concussion treatment that has evidence behind it — The first 48 hours, active recovery, and the therapies used for lingering symptoms.
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