Layer Health, Inc.

Boston, MA · Founded 2022 · Digital health · Private

AI software that reviews and extracts insights from longitudinal medical charts

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Updated · layerhealth.com

Sector
Digital health
Headquarters
Boston, MA
Founded
2022
Latest Form D
$26M, Apr 2025
Total capital
$26M
Federal grants
None on recordNo awards found in SBIR/STTR, NIH, NSF or DoD records.
Private capital raised
$26M
1 Form D · last Apr 2025
19 months since last filing
Federal contracts
None on recordNo federal contract awards found.
Granted patents
0
4 pending

Capital timeline

2025FEDERAL ↑EQUITY ↓Cumulative $26M1st Form D$26M
2025FEDERAL ↑EQUITY ↓Cumulative $26M1st Form D$26M

Latest events

  • Private capital raisedForm D · SEC · 1st filing$26M

Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.

Founders and team

From SEC Form D filings
  • Anthony A. PhilippakisDirectorNamed in SEC Form D filings
  • David A. SontagExecutive Officer, DirectorNamed in SEC Form D filings
  • Lynne A. O'KeefeDirectorNamed in SEC Form D filings

What it has protected

USPTO · 0 granted of 4
  • PendingTechniques For Training And Validating An Optimized Machine Learning ModelUSPTOApplication 18674211
  • PendingTechniques For Refining Queries To An Llm-based System For Analyzing Clinical NotesUSPTOApplication 18500104
  • PendingTechniques For Training And Validating An Optimized Machine Learning ModelUSPTOApplication PCTUS2025030565
Show all 4 patent records
  • Techniques For Training And Validating An Optimized Machine Learning ModelNov 27, 2025 · Application 18674211Pending
  • Techniques For Refining Queries To An Llm-based System For Analyzing Clinical NotesMay 1, 2025 · Application 18500104Pending
  • Techniques For Training And Validating An Optimized Machine Learning ModelApplication PCTUS2025030565Pending
  • Techniques For Refining Queries To An Llm-based System For Analyzing Clinical NotesApplication PCTUS2024053590Pending
  • Neuromotion, Inc.Similar federal contract value in Digital health · null in contracts
  • Naked Labs, Inc.Similar federal contract value in Digital health · null in contracts
  • NutriSense, Inc.Similar federal contract value in Digital health · null in contracts
  • Prescribe FIT, Inc.Similar federal contract value in Digital health · null in contracts
  • Xolani Health System CorpSimilar federal contract value in Digital health · null in contracts
  • MedeloopSimilar federal contract value in Digital health · null in contracts

Regulatory activity · Digital health

Sector-level, not company-level

Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.

Sources

Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.

How to read this page

Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.

Data freshness

SEC Form D filings through . SBIR and STTR awards through .