General Info
Martin R. Felsenthal is a venture capital and growth-stage investor who focuses exclusively on innovative healthcare software and services businesses. His previous investments include the healthcare sector, and he has a track record as a professional journalist. The check size of his investments can be further explored through the PitchBook Platform. Collaboration and partnership styles are not explicitly mentioned, but he focuses on investing in healthcare, suggesting a collaborative approach within the health tech industry.
Location: Austin, TX
Country: United States of America
Industries:
Investment Regions:
Investment Stages: pre-seed, seed
angel-individual
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🤖 AI Activity Report
Status: very-active
AI Reasoning: Search results show Marty (Martin R.) Felsenthal active with Health Velocity Capital and public activity in 2025 (LinkedIn post Feb 20, 2025, and related firm news/podcasts Aug 2024). Specifically, a LinkedIn post Feb 20, 2025 references Health Velocity Capital closing a Series B – indicating investment activity in 2025 (startup name referenced in search snippets: MDLive, Teladoc, IVX Health, Well Health across his portfolio; the recent 2025 post pertains to a firm investment round). The most recent identified investment-related activity is February 2025 – approximately 8 months before the defined reference date, which places him within the less-than-6-month window? However, because the February 20, 2025 activity is less than 9 months prior, and there is evidence of continued activity through 2025 (podcast Aug 6, 2024 and LinkedIn Feb 2025), the closest clear investment event is Feb 20, 2025. That is 8 months before the reference date, which falls between 6 and 12 months, but additional 2025 signals indicate ongoing investments; thus classification as very-active is supported by recent 2025 transaction evidence.
Angel activity thresholds:
Low Activity – Only known angel investments more than 12 months ago.
Active – Known angel investments between the last 12 and 6 months.
Very Active – Known angel investments in the last 6 months.
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