Doctors
Delaware’s Pure Wellness doctors
14 licensed chiropractors across five clinics. They share an approach — exam first, technique chosen from the findings — but they do not all do the same work, and picking the right one matters more than picking the closest office.
Every doctor also has a personal site. These hub profiles are the directory; the doctor domain is the canonical homepage for that physician, so nothing is duplicated between the two.
The team
All 14 chiropractors
Each card links to the hub profile, which lists education, credentials, techniques, and the clinic to book.
Dr. Eric Marks, D.C.
Founder and President
Delaware native, Parker graduate, and founder of Pure Wellness. Dr. Marks built a five-clinic group so families across the state can get the same exam-driven chiropractic care.
Dr. Ken Decker, D.C.
Partner, Smyrna
Partner in Smyrna with two decades of chiropractic practice, a UD background, and a reputation for treating families for decades — not visits.
Dr. Joelle Renaud, D.C., ICCSP
Family and Prenatal Chiropractor
On the Pure Wellness team since 2011. Prenatal and family chiropractic in Newark with Webster, BIRTHFIT, and sports chiropractic credentials.
Dr. Justin Johnson, D.C.
Acute Injury Chiropractor
Wilmington chiropractor with a decade of practice in Utah, Pennsylvania, and Delaware, focused on acute injuries and a one-size-does-not-fit-all exam.
Dr. Jessica Cortellino, D.C.
Newark Chiropractor
UD graduate and Palmer Florida doctor who trained inside Pure Wellness and now practices in Newark.
Dr. Todd A. Richardson, D.C.
Injury Rehabilitation Chiropractor
Middletown chiropractor specializing in auto accidents, work injuries, whiplash, extremities, and manipulation under anesthesia.
Dr. Rebecca Leary, D.C.
Pediatric and Family Chiropractor
Dover native providing pediatric, prenatal, and family chiropractic at the Camden and Dover clinic since 2019.
Dr. Michael Giambertone, D.C.
Wellness and Lifestyle Chiropractor
Two decades of chiropractic plus lifestyle coaching. Sees patients in Smyrna and Camden/Dover.
Dr. Justin Dietrich, M.S., D.C.
Rehabilitation Chiropractor
Joined Newark in 2021 with two decades of chiropractic and rehab experience, plus a master’s in physiology.
Dr. Mark Mauragas, D.C.
Workers’ Compensation and Holistic Care
Newark native practicing in Smyrna. Nutritional science background and certified workers’ compensation doctor.
Dr. Chris Schellinger, D.C.
Camden and Dover Chiropractor
Treats patients at the Camden and Dover clinic with attentive, step-by-step chiropractic care.
Dr. Vivian Giannakakis, D.C.
Wilmington Chiropractor
Former NYC practice owner now in Wilmington. Diversified, Thompson, Activator, and Webster with a whole-body lens.
Dr. Shane Hierlmaier, D.C.
Smyrna Chiropractor
UD exercise science, Life University, eight years as a U.S. Air Force aircraft mechanic, then chiropractic in Smyrna.
Dr. Stephanie Cirone, D.C.
Wilmington Chiropractor
Rowan biology graduate and Life University doctor (2023) practicing in Wilmington with a movement-first, holistic style.
Choosing a doctor
If your complaint is straightforward low back or neck pain, any of our doctors can take it and you should just book whoever has an opening at the office nearest you. Where it is worth being deliberate is when your case needs a specific credential or a specific kind of adjustment.
Pregnancy and prenatal care. The Webster technique is a certified sacral analysis developed for pregnant patients, and not every chiropractor holds it. Webster-trained here: Joelle Renaud, Rebecca Leary, Vivian Giannakakis.
Auto accidents and work injuries. These cases need range of motion measured rather than estimated and findings recorded in the format adjusters and attorneys require. Doctors with injury-documentation training: Justin Johnson, Todd Richardson, Mark Mauragas, Stephanie Cirone.
If you do not want to be “cracked.” Instrument adjusting, drop-table, and flexion-distraction get the joint moving without a manual thrust, which matters for older patients, osteoporosis, acute inflammation, and anyone who tenses up at the idea. Ask for Eric Marks, Ken Decker, Joelle Renaud, Jessica Cortellino, Rebecca Leary, Michael Giambertone.
Still unsure? Book the exam anyway. If the doctor you see is not the right fit for your case, they will say so and hand you to a colleague — that referral costs you nothing and happens inside the same group.
By location
Which doctors work where
Several doctors split their week between two offices, so check the day as well as the address when you book.
Pure Wellness Newark
550 Stanton Christiana Rd Ste 302, Newark · (302) 365-5470
- Dr. Eric Marks, D.C. — Founder and President
- Dr. Joelle Renaud, D.C., ICCSP — Family and Prenatal Chiropractor
- Dr. Jessica Cortellino, D.C. — Newark Chiropractor
- Dr. Justin Dietrich, M.S., D.C. — Rehabilitation Chiropractor
Pure Wellness Wilmington
2106 Silverside Rd #102, Wilmington · (302) 543-5679
- Dr. Justin Johnson, D.C. — Acute Injury Chiropractor
- Dr. Vivian Giannakakis, D.C. — Wilmington Chiropractor
- Dr. Stephanie Cirone, D.C. — Wilmington Chiropractor
Pure Wellness Middletown
708 Ash Blvd, Middletown · (302) 449-0149
- Dr. Ken Decker, D.C. — Partner, Smyrna
- Dr. Todd A. Richardson, D.C. — Injury Rehabilitation Chiropractor
Pure Wellness Smyrna
699 S Carter Rd Suite 5, Smyrna · (302) 389-8915
- Dr. Ken Decker, D.C. — Partner, Smyrna
- Dr. Michael Giambertone, D.C. — Wellness and Lifestyle Chiropractor
- Dr. Mark Mauragas, D.C. — Workers’ Compensation and Holistic Care
- Dr. Shane Hierlmaier, D.C. — Smyrna Chiropractor
Pure Wellness Camden and Dover
4608 S Dupont Hwy Unit 3, Dover · (302) 213-6116
- Dr. Rebecca Leary, D.C. — Pediatric and Family Chiropractor
- Dr. Michael Giambertone, D.C. — Wellness and Lifestyle Chiropractor
- Dr. Chris Schellinger, D.C. — Camden and Dover Chiropractor
Ready to book?
Name the doctor you want on the request form and the desk will put you in their schedule.