Three physicians specializing in internal medicine and pediatrics will deliver personalized, relationship-based care under the clinical leadership of Chief Medical Officer Dr. Bharath Thankavel.

BOCA RATON, Fla., Oct. 7, 2026 /PRNewswire/ -- Marquis MD, a premium concierge medicine company, today introduced the three physicians leading member care at its flagship Boca Raton practice: Dr. Christine Crocker in internal medicine, Dr. Douglas Barlow and Dr. Jay Harvey in pediatrics. The medical team operates under the clinical leadership of Chief Medical Officer Dr. Bharath Thankavel.

Rather than adding concierge features onto a traditional model, Marquis MD was built for its members, with every detail, from care coordination to physician access, designed around the relationship rather than the appointment. 

"Every physician on this team was chosen for the same reason: the ability to know a member well enough that care decisions reflect the whole person, not just a chart," said Dr. Bharath Thankavel, Chief Medical Officer of Marquis MD. "As we welcome members to the practice, our priority is to deliver thoughtful, coordinated care and a consistently high standard of services from day one."

Meet the Physicians

Christine Crocker, M.D., Internal Medicine

Dr. Christine Crocker is a board-certified internal medicine physician specializing in comprehensive adult healthcare and wellness, functional medicine, longevity, and women's health. She believes effective medicine begins with understanding the whole person, including each patient's history, goals and daily life. Dr. Crocker earned her bachelor's degree in English literature from the University of Virginia and completed her internal medicine residency at the University of Pittsburgh Medical Center. 

"Primary care is a long-term relationship. It rewards continuity, and continuity is the first thing a high-volume model gives up. At Marquis MD, I get to be the same physician for my members year after year, with a history I already know," said Dr. Christine Crocker, Internal Medicine physician at Marquis MD.

Douglas Barlow, M.D., Pediatrics

Dr. Douglas Barlow is a board-certified pediatrician with more than three decades of experience caring for children from infancy through the college years. A longtime Boca Raton physician, he founded his own pediatric practice and previously served as Chief of Pediatrics at Boca Raton Community Hospital and team pediatrician for the Florida Panthers. Dr. Barlow earned his medical degree from the New York University School of Medicine and completed his residency at Long Island Jewish Medical Center. He has held associate professor appointments in pediatrics, helped establish the medical school at Florida Atlantic University and is fluent in Spanish.

"Parents come in with information they've gathered from different sources, whether online or from their own community. My role is to help them separate what's genuinely relevant from what isn't, so the decisions they make are well-informed and specific to their child's needs," said Dr. Douglas Barlow, pediatrician at Marquis MD.

Jay Harvey, M.D., FAAP, Pediatrics

Dr. Jay Harvey is a board-certified pediatrician and Fellow of the American Academy of Pediatrics with more than 35 years of experience. His expertise includes newborn care, urgent pediatric care and outpatient general pediatrics. Before joining Marquis MD, Dr. Harvey co-founded and led a growing pediatric practice and later cared for families at a Boca Raton practice for nearly a decade. He has also mentored medical professionals and advocated for children's health and safety through educational programs in hospitals, schools, and public forums. 

"Every pediatrician has two patients: the parent and the child," said Dr. Harvey. "I want every parent to feel welcomed, listened to, understood and respected. Families in my care should have the comfort of knowing they can talk about anything with their doctor."

A Personalized Membership Experience

Rather than adding concierge features to a traditional practice, Marquis MD was designed with a members-first approach, prioritizing their relationship with the physicians. Marquis MD brings the standard of concierge care for the whole family, where parents and children are seen in the same practice, ensuring continuity and unified family care.

Depending on the selected membership level, services may include:

• Same-Day Appointments: Guaranteed immediate access for urgent needs.
• Unlimited Unhurried Visits: Extended appointment times allowing for comprehensive discussions.
• 24/7 Direct Physician Access: Urgent medical advice available anytime, anywhere.
• Dedicated Concierge Care Coordinator: Manages referrals, lab follow-ups, and care logistics.
• In-Office Labs: Delivers same-day results for most tests.
• Personalized Follow-Up: Care Team and/or Physician provide a personal call after every visit, at every member level.
• Advanced Diagnostics: Includes multi-cancer early detection screening, echocardiogram, genetic testing, and longevity protocols.
• Physician Presence During Hospitalization: Enhanced advocacy and coordination during hospital stays.

Membership is offered at three levels: Marquis Select, Marquis Signature, and Marquis Reserve. The membership fee covers all included services, and non-membership services are billed directly to the member's insurance. Standard copays, deductibles, and coinsurance still apply to insurance-billed services.

Explore Marquis MD's premium concierge services and membership options at marquismd.com. 

About Marquis MD 

Marquis MD is a premium concierge medicine company whose flagship practice is located at 660 Glades Road, Suite 460, Boca Raton, Florida. The company offers three membership levels — Marquis Select, Marquis Signature, and Marquis Reserve (invitation-only) — with unlimited unhurried visits, around-the-clock availability, 24/7 physician access, and a dedicated Concierge Care Coordinator. Marquis MD Pediatrics extends the same standard of care to children, allowing families to be served within a single, coordinated practice.

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SOURCE Marquis MD