Charlene Wang

We're excited to announce that Ember has raised a $4.3M seed funding round led by @NexusVP. We’ve come a long way in the last four years. We’re working with some of America’s largest and most prestigious healthcare institutions. We’ve moved into a new office. We’re staffing up and building out. But we know the work is just beginning. We have a long way to go to solve America’s healthcare denial crisis. We’re grateful to all the investors, advisors, and supporters who shared our belief in Ember’s potential, including @ycombinator, @garrytan, @oneabhishek, @yuris, @kul, @karrwinn, @suexuamino, @LarryLiAmino, @JdotJdotF, @RichAberman, @jakemintz, @ooshma, and so many others who helped us get to where we are today. Thank you all for believing in our team, our technology, and our vision.

@emkara @ycombinator @EmberCopilotAI Thanks Emir!

@ycombinator @EmberCopilotAI Congrats! @hsinleiwang

Congrats to @EmberCopilotAI on their $4.3M seed! Ember wants to solve America’s healthcare denial crisis. They prevent denials before they happen—documenting visits, reviewing charts, and ensuring claims comply with payer requirements. Health systems using Ember are already seeing results: 57% fewer denials, 83% less admin time, and 25% higher net collection rates. embercopilot.ai/nexus-venture-…

@oneabhishek @NexusVP @_warrenwwang Thanks Abhishek! Really glad to be working with you. Excited for what we’ll build together and happy to be part of the NexusVP family 🥂

@hsinleiwang @NexusVP Thanks @hsinleiwang and @_warrenwwang for partnering with us as you build Ember into a powerful AI-native platform that solves one of healthcare’s most significant pain points. Excited for the journey ahead. Welcome to the @NexusVP family! :)

We're excited to announce that Ember has raised a $4.3M seed funding round led by @NexusVP. We’ve come a long way in the last four years. We’re working with some of America’s largest and most prestigious healthcare institutions. We’ve moved into a new office. We’re staffing up and building out. But we know the work is just beginning. We have a long way to go to solve America’s healthcare denial crisis. We’re grateful to all the investors, advisors, and supporters who shared our belief in Ember’s potential, including @ycombinator, @garrytan, @oneabhishek, @yuris, @kul, @karrwinn, @suexuamino, @LarryLiAmino, @JdotJdotF, @RichAberman, @jakemintz, @ooshma, and so many others who helped us get to where we are today. Thank you all for believing in our team, our technology, and our vision.

@gkotte1 @garrytan @NexusVP Thank you!

@hsinleiwang @garrytan @NexusVP congrats 🎊

@skeptrune @NexusVP Thanks!

@hsinleiwang @NexusVP congrats!!!!!

@meemhikal @NexusVP Thank you!

@hsinleiwang @NexusVP Important mission. Huge congrats on the seed round!

Three years ago, we couldn't afford a subway ad. Today, we're in Times Square. The secret? We optimized for being wrong quickly, not looking right. We killed features we loved, turned down revenue that pulled us off course, and chose curiosity over ego. Stay humble. Stay building.

gm nyc

Imagine no denials...

Mini F24 YC reunion right before the alumni demo day 🚀

@ax_pey Congrats! Mars looks amazing

Introducing MARS, the first Personal AI Robot. In technology, getting to the future we want starts with building it together. This is why we designed Mars. Inspired by early PCs, Mars is a powerful, complete, extendable robot. It runs BASIC, an open embodied AI agent we created for you to program with code, demonstrations, and prompts. This allows Mars to perform complex long-horizon tasks involving spatial memory, reasoning, manipulation and navigation. Pre-orders open now ⬇️ Demos & details in the thread

I started working on @EmberCopilotAI 3 years ago and now being able to move our team into this amazing office space feels next level. Thank you to all who have been part of our growth so far and excited for the future!

Behind closed doors at YC’s 1st female Founder Mode dinner, we cut straight to the hard stuff: fire faster, audit like a customer, use AI as your mirror, and promote resourceful learners. Grateful to @ycombinator for gathering such a badass crew. (👀 btw, Ember is hiring!)

Back at @ycombinator this week, as an alumni speaker at the S25 dinner. Grateful to @xuster and @garrytan for hosting. Always inspiring to meet the next wave of founders. Excited to see where this crew goes.

@kul @ZeusLiving @theblueground @caydengineer @ycombinator Congrats Kulveer! Excited to see you embark on the next chapter!

I wrote about how @ZeusLiving (YC S11) survived the pandemic in a thread that went viral with over 2M views. Here's the update and what I'm up to next. 2021: Zeus survived COVID 2022: Chewed glass & made the portfolio profitable 2023: Sold Zeus to @theblueground (40,000+ homes) 2024 - Started @phosphorcap to invest in the top @ycombinator startups Current status: • $50M invested across 200+ companies • $93M portfolio ARR • $740M follow-on capital raised

Loved reconnecting with AI folks and alums today. So much fire being built out there. We're growing our team too. We’re hiring cracked engineers and growth hackers. DM me with your most impressive project!

Just landed in Atlanta! Open to meeting up for a coffee or quick chat. If you're around, message me! Would love to connect.

@yashdulla @ycombinator CRM

A few weeks ago the @ycombinator batch begged me to make a CRM crash course for founder-led sales. After multiple drink offers 🍻— I gave in. The session itself went semi-viral inside the batch, and people keep asking for the video. If you’re doing founder-led sales, the CRM might feel like this clunky behemoth system—it doesn’t have to. In the video I go over the absolute basics: → The only 3 CRM objects that REALLY matter (Deals, Contacts, Companies) → CRM best practices → Why logging every interaction isn't optional → How to set up/automate your CRM so it becomes your single source of truth (and sales doesn't hate using it) I wasn’t planning on releasing this outside the YC group, but given the response, happy to share it with others running early sales teams. If you want the video → just comment "CRM" and I’ll DM it to you. Thank you to Aaron Zelinger, @ghita__ha, @Pashpops, @JoshSabol, Thibault Henriet. @NityaArora14, @gunwoo__kim, @adinagoerres for making sure I got this out. This ended up being one of the highest ROI hours I’ve spent lately — founders really need better sales and CRM playbooks. If you’re in the trenches with founder-led sales and figuring this out, happy to help.

ACHE is one of the most welcoming conferences I’ve been to. Everyone is here to connect and share ideas on how to manage change in healthcare. It was great seeing both familiar and new faces from California, Texas, and Ohio yesterday. This week is full of great conversations about growth, leading change, and staying financially strong. I’m looking forward to more good talks. If you’re in Houston this week, come say hi! #ACHECongress

The experience at American Academy of Orthopaedic Surgeons (@AAOS1) 2025 is incredible! It was great to see so many talented surgeons in one place, sharing knowledge, challenges, and solutions for the future of orthopedics. Now, let’s talk about something different. 𝗡𝗼, 𝗘𝗺𝗯𝗲𝗿 𝗱𝗼𝗲𝘀𝗻’𝘁 𝗯𝘂𝗶𝗹𝗱 𝗳𝗮𝗻𝗰𝘆 𝗺𝗲𝗱𝗶𝗰𝗮𝗹 𝗱𝗲𝘃𝗶𝗰𝗲𝘀. But what we do is just as critical—we help surgeons 𝗴𝗲𝘁 𝘁𝗵𝗲 𝗰𝗮𝘀𝗵 𝘁𝗵𝗲𝘆 𝗻𝗲𝗲𝗱 𝘁𝗼 𝗯𝘂𝘆 𝘁𝗵𝗲𝗶𝗿 𝗳𝗮𝘃𝗼𝗿𝗶𝘁𝗲 𝘀𝘂𝗿𝗴𝗶𝗰𝗮𝗹 𝗿𝗼𝗯𝗼𝘁𝘀 and invest in the tools that actually make a difference in their practice. Because let’s be real: ✅ 𝗥𝗲𝗶𝗺𝗯𝘂𝗿𝘀𝗲𝗺𝗲𝗻𝘁 𝗿𝗮𝘁𝗲𝘀 𝗮𝗿𝗲 𝗱𝗲𝗰𝗹𝗶𝗻𝗶𝗻𝗴 ✅ 𝗢𝗿𝘁𝗵𝗼 𝘀𝘂𝗿𝗴𝗲𝗼𝗻𝘀' 𝘀𝗮𝗹𝗮𝗿𝗶𝗲𝘀 𝗮𝗿𝗲𝗻’𝘁 𝗿𝗶𝘀𝗶𝗻𝗴 𝗮𝗻𝘆𝘁𝗶𝗺𝗲 𝘀𝗼𝗼𝗻 ✅ 𝗧𝗵𝗲 𝗮𝗱𝗺𝗶𝗻 𝗯𝘂𝗿𝗱𝗲𝗻—𝗽𝗿𝗶𝗼𝗿 𝗮𝘂𝘁𝗵, 𝗿𝗲𝘁𝗿𝗼 𝗮𝘂𝘁𝗵, 𝗱𝗲𝗻𝗶𝗮𝗹𝘀—𝗸𝗲𝗲𝗽𝘀 𝗴𝗲𝘁𝘁𝗶𝗻𝗴 𝘄𝗼𝗿𝘀𝗲 Yet, amidst all these challenges, I had the chance to meet some business-savvy surgeons who are successfully running incredible private practices—even as the industry sees more roll-ups and consolidation. They’re making it work, and their strategies are worth sharing. There’s so much to automate in ortho. If you're a surgeon navigating these challenges, DM me—I’d love to connect and have a quick chat. Let’s make things easier and more profitable for you. #AAOS2025 #Orthopedics #HealthcareFinance