Siddarth Nandyala

Siddarth Nandyala grew up in a family of Indian immigrants in Texas where his father built AI startups and treated technology as a tool, not a toy. That environment normalized hard technical problems at the dinner table, so by the time most kids were just getting phones, he was already experimenting with how sensors and machine learning could pick up signals doctors miss.

CircadiaV started from a simple constraint most health tech founders ignore. In rural India and low resource clinics in the US, people might never see a cardiologist, but almost everyone has access to a basic smartphone. Siddarth framed the problem as turning that cheapest possible device into a cardiology grade stethoscope that could flag risk in seconds with no extra hardware.

Instead of building a flashy demo and stopping at science fair hype, he pushed CircadiaV into real clinical environments. Reports from Indian and US coverage note that the app has already been tested on more than 15,000 patients in the United States and over 700 patients in India, including trials at Guntur Government General Hospital where Siddarth personally demonstrated the workflow to physicians on the ground.

That traction pulled in serious attention. Andhra Pradesh chief minister N Chandrababu Naidu publicly highlighted CircadiaV, called Siddarth the world’s youngest AI certified professional with Oracle and Arm credentials, and backed him as a state level innovation story. Indian media, diaspora outlets and LinkedIn operator accounts amplified the narrative that a teenager had an AI app detecting heart disease in about seven seconds with roughly 96 percent accuracy using only smartphone based heart sound recordings.

1. He made the phone the distribution, not just the interface. By relying only on smartphone microphones instead of proprietary hardware, Siddarth avoided hospital procurement cycles and created a tool that any clinician or health worker with a basic Android device could start testing immediately.

2. He went where credibility concentrates. Testing CircadiaV inside hospitals like Guntur Government General Hospital and under the eye of clinicians gave him data on thousands of real patients, plus authority when pitching accuracy numbers to media, policymakers and future partners who would never trust a purely lab based result.

3. He used policy makers as amplifiers. Rather than chasing random social media virality, Siddarth got a state chief minister to see the app used live on patients, then let that office broadcast the story across Indian and diaspora press. That single endorsement turned a teenage side project into a nationally validated health innovation and opened doors for more pilots without a traditional go to market budget.