LI
Healthcare NavigationLIAfterCare
A physician-built resource helping patients and families navigate discharge planning, rehabilitation, long-term care, specialized facilities, and life after hospitalization.
Explore LIAfterCare Christopher M. Brennan, MD
Physician. Creator. Builder of better systems.
I combine clinical medicine, technology, education, design, and entrepreneurship to build practical resources, digital platforms, and brands that help people.
Internal Medicine Physician
Digital Health Entrepreneur
Long Island Based
Dr. B • The TechTokDoc
Medicine, technology, education and innovation
Building
01PhysicianClinical care and leadership
02EducatorPatient and creator education
03TechnologistDigital tools and smarter workflows
04EntrepreneurPurpose-driven ventures and brands
15+ YearsAcute-care medicine and leadership
100K+TechTokDoc YouTube subscribers
Physician-LedHealthcare education and digital strategy
West Islip, NYRooted in the Long Island community
My Work & Ventures
Different projects. One shared purpose.
Each venture applies practical technology, clear communication, thoughtful design, or community connection to a real-world need.
UW
Digital Strategy & AIUSAWebDZines
Physician-led website development, branding, SEO, digital marketing, application development, AI integration, and custom video presence for healthcare professionals and businesses.
Visit USAWebDZinesES
Commerce & CommunityEnduroSip
Premium insulated drinkware, custom designs, community collections, school and organization fundraisers, and practical products created to endure everyday life.
Shop EnduroSip▶
Technology EducationTechTokDoc
Practical tutorials and explainers covering artificial intelligence, productivity, smart-home technology, consumer devices, digital tools, and better creator workflows.
Watch on YouTubeM360
Digital Health • In DevelopmentMedPass360
A planned medication-history and caregiver communication platform designed to help patients, families, clinicians, hospitals, and rehabilitation facilities maintain a clearer, shareable view of medication changes across care settings.
Coming Soon
About Dr. Brennan
From bedside medicine to digital innovation.
I am an Internal Medicine physician and hospitalist based in West Islip, New York. My clinical work has taught me that better communication and better systems can change outcomes—not only inside the hospital, but throughout the entire patient and family experience.
My background in technology, design, media, and entrepreneurship allows me to approach problems from multiple angles: understand the human need, simplify the process, build the right tool, and explain it clearly.
Bring clarity. Build smarter systems. Improve outcomes. Add a human touch.
Read My Story
Watch & Learn
Technology made understandable.
On TechTokDoc, I turn complex tools and common technology frustrations into practical, step-by-step guidance that viewers can use immediately.
▶
Latest Insights
Practical ideas you can use.
Articles and tutorials at the intersection of healthcare, artificial intelligence, technology, and everyday problem-solving.
How to Use AI Voice Cloning for Patient Education Videos
A responsible workflow using ElevenLabs and VEED to create clear, consistent patient-facing education.
Read ArticleThe #1 Mistake Samsung TV Owners Make With Verizon Fios
Learn how one setup choice can simplify streaming, reduce remote confusion, and improve everyday viewing.
Read ArticleExcel Flash Fill Explained: Automate Repetitive Tasks
Use Ctrl + E to split names, combine columns, clean data, and save hours without complicated formulas.
Read Article
Connect & Collaborate
Have an idea, project, or opportunity worth building?
Connect with Dr. Brennan regarding healthcare technology, digital strategy, educational content, physician video presence, business collaboration, or media opportunities.
This website provides general educational information and does not provide individual medical advice, diagnosis, or treatment.