Signal & Stage · A DR GPT™ Labs venture

Find the right speaker for your next event.

Looking for Harvey Castro MD? View speaking topics and booking information.

Find speakers on AI, healthcare, leadership, wellbeing and commercial space. Compare audience fit, watch a speaking sample and tell us about your event.

Find the right topic for your audience.

Explore these perspectives, then use the filters to narrow your shortlist. Session scope and availability are confirmed during planning.

Explore six event themes and their speakers

Disability, inclusion and lived experience

Bring listening, identity and lived experience into conversations about inclusion. Final story boundaries are agreed with Taz.

Taz Hart

Workplace wellbeing and resilience

Discuss employee wellbeing, resilience and human skills in demanding workplaces.

Lupita Almuhana

Meet the collective

Choose by topic. Get to know the speaker.

Or select speakers below to download a comparison.

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Find speakers for your audience

Choose an audience and topic to see relevant profiles. You can compare up to three speakers.

Sally Ann Frank

Sally Ann Frank

Healthcare innovation, enterprise adoption and startup growth

Consider for: Healthcare innovation leaders, healthtech founders, investors and accelerators

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Healthcare innovation interview

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Jim Cantrell

Jim Cantrell

SpaceX founding team member; CEO and cofounder of Phantom Space

Consider for: Business leaders, founders, engineers and innovation teams.

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Interview · 48 min

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Marissa Fayer

Marissa Fayer

DeepLook Medical CEO; HERhealthEQ founder

Consider for: Healthcare executives, medtech founders, investors and women’s leadership audiences.

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Stage talk · 14 min

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David Rhew MD

David Rhew MD

Responsible healthcare AI, clinical workflows and access to care

Consider for: Healthcare executives, clinical leaders, health technology teams and organizations implementing AI

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Stanford AIMI conversation

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Robin Farmanfarmaian

Robin Farmanfarmaian

Healthcare AI, patient access and the future of care

Consider for: Healthcare executives, industry associations, innovators and audiences exploring AI and care delivery

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Speaker reel

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Taz Hart

Taz Hart

Leadership communication, identity and living with a disability

Consider for: Leaders, people teams, patient experience teams and conferences exploring disability and inclusion

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Speaking video to follow

Reenita Das

Reenita Das

Healthcare futures, longevity and women’s health

Consider for: Healthcare executives, medtech leaders, investors and teams planning the future of care

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Keynote selected by Reenita

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Ranya Habash, MD

Ranya Habash, MD

Clinical AI, digital health and ophthalmology

Consider for: Healthcare leaders, clinicians, digital health founders and innovation teams

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Speaking sample forthcoming

Viv Babber MD

Viv Babber MD

Physician executive; AIGP credential in AI governance

Consider for: Boards, executives, legal and compliance teams, healthcare leaders and AI governance teams.

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Speaker reel · 78 sec

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Sandra Ximena Díaz Hoyos

Sandra Ximena Díaz Hoyos

Human to Human leadership and practical AI adoption

Consider for: CEOs, founders, culture and learning leaders; Latin American and US Hispanic audiences

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Spanish · English · Portuguese

Pascale Caron

Pascale Caron

AI strategy, entrepreneurship and organizational transformation

Consider for: CEOs, executive teams, entrepreneurs, boards and innovation leaders

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English and French · Video forthcoming

Tamsin Deasey-Weinstein

Tamsin Deasey-Weinstein

AI strategy, workforce readiness and responsible adoption

Consider for: Business leaders, HR and learning teams, educators and public sector organizations

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AI and future of work interview · 50 min

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Malak Atut

Malak Atut

Healthcare executive; Wharton educator and Yalla Now AI cohost

Consider for: Business leaders, founders and professionals translating technology into everyday work.

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Speaking video pending

Lupita Almuhana

Lupita Almuhana

Stressie founder and CEO; workplace wellbeing speaker

Consider for: People leaders, frontline teams and organizations navigating pressure and change.

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Meet Lupita · 21 sec

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Dr. Dipu Patel

Dr. Dipu Patel

Clinical reasoning, AI education and healthcare innovation leadership

Consider for: Clinicians, health professions educators, health system leaders, professional associations and CME providers

Events from January 2027 · Dates subject to confirmation

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Media interview

Watch Dipu

Explore the perspectives

Start with the conversation.

What does your audience need to understand, decide or do differently? Choose a topic to find relevant speakers.

Topics often overlap. Compare the audience fit and speaking samples before choosing a shortlist.

For your planning team

Get the free planner guide and scorecard.

Download the guide and comparison scorecard. Share them with your planning team.

Planning your event

How booking works.

01 · Your event

Share your event.

Share your audience, date and the question your event needs to address.

02 · Speaker fit

Discuss the fit.

Discuss the speaker, topic and format that suit your audience.

03 · Event details

Confirm the details.

Agree on availability, scope and terms before the booking is finalized.

A DR GPT™ Labs venture

Expertise deserves a clear voice.

Harvey Castro, MD created Signal & Stage because expertise alone does not make a presentation useful. Audiences need clear ideas, relevant stories and practical takeaways.

That belief guides this curated speaker collective: people with firsthand experience and distinct perspectives, matched thoughtfully to each event’s audience.

Looking to book Harvey? Visit his speaking page.

For event planners

Plan with confidence.

How do I choose a speaker?

Start with your audience and the question your event needs to address. Compare topic areas, watch a speaking sample and tell us what you want participants to take away.

Can I ask for help choosing?

Yes. Share your event date, audience and topic in the inquiry form. You can leave the speaker field open if you are still exploring.

Can I discuss a virtual event or a different format?

Select your preferred format when you inquire. We will discuss the speaker’s availability and confirm the scope for your event.

Are the topics final session titles?

Topic areas help start the conversation. The final title, content and audience takeaways are confirmed with the speaker before the event.

What happens after I inquire?

We review the event details and discuss fit and availability. Sending an inquiry does not reserve a date. Scope and terms are confirmed before a booking is finalized.

Still choosing?

Tell us about your audience and the conversation you want to start.

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Tell us about the room.

Share the audience, the conversation you need to lead, and the kind of perspective that would be most useful.

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Signal & Stage is currently curating its founding collective. An inquiry does not guarantee speaker availability or representation.

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We are interested in experienced voices with a clear point of view, credibility earned through their work, and a desire to help audiences think and act more clearly.

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