PhenoML

What PhenoML does

PhenoML (Phenoml, Inc.) is a private healthcare AI developer platform founded in 2023 and headquartered in Boston, USA. The company offers a suite of seven specialized APIs — Construe, Lang2FHIR, Code Search, Workflows, Agents, Summarize, and Cohort Builder — that collectively address clinical text processing, medical coding, FHIR data standardization, cross-system code lookup, workflow automation, HIPAA-compliant AI assistant deployment, and patient cohort definition. The platform is built around proprietary healthcare-specific language models, with the company claiming a 100% Lang2FHIR conversion success rate versus 30–60% for OpenAI, Gemini, and Anthropic, 3X greater accuracy than general-purpose AI tools, and lower latency than OpenAI and Anthropic. Self-reported technical performance benchmarks are the primary differentiator claim.

The company's go-to-market is API-first, combining a self-serve developer console (console.pheno.ml) and documentation portal (developer.pheno.ml) with enterprise sales for larger healthcare deployments. Revenue is generated through a credit-based usage pricing model, with public pricing not disclosed and enterprise contracts quote-based. Target customers span four healthcare verticals: providers, biopharma, healthtech, and payers. The company holds SOC 2 Type 2 certification and offers HIPAA-compliant hosted and dedicated deployment options, including private LLM implementations.

The company is small, recorded at 1–10 employees, and founder-led by Kerry Weinberg (Founder and CEO). Plug and Play accelerator participation in March 2025 is the only disclosed capital event, and no parent company, institutional investors, named customers, or operating geographies are publicly disclosed.

Name

PhenoML

Legal name

Phenoml, Inc.

Website

https://phenoml.com

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

1–10 employees

Short description

PhenoML is a Boston-based healthcare AI developer platform that sells seven specialized APIs — for medical coding, FHIR conversion, code search, workflow automation, HIPAA-compliant AI agents, summarization, and cohort building — to providers, biopharma, healthtech, and payers via credit-based usage pricing.

Ownership category

akta.pro rank

Product category

Healthcare AI APIs

NAICS

Custom Computer Programming Services (541511), Computer Systems Design Services (541512)

SIC

Services-Computer Programming Services (7371), Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Interoperability Standards, Profiles & Implementation (HL7/FHIR/IHE) (HLACABAA)

akta.pro secondary industries

EHR Extensions, APIs, App Marketplaces & SMART-on-FHIR Apps (HLACAAAN), EHR/EMR Integration & Interoperability Middleware (HL7/FHIR) (HLALAKAD)

Keywords

• Healthcare AI APIs
• Clinical NLP
• FHIR interoperability
• Medical coding automation
• HIPAA-compliant AI

Headquarters

HQ city

Boston

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Personnel, Infrastructure, Marketing or Sales, Operations

Revenue model

1. API Usage (Credit-based): Credit-based usage model where customers purchase credits to consume API services. Usage-based consumption for medical code extraction, FHIR conversion, code search, workflow automation, AI assistants, summarization, and cohort building.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

PhenoML provides a suite of seven healthcare-specific AI APIs delivered as a developer platform: Construe (medical code extraction from clinical text), Lang2FHIR (unstructured clinical text to structured FHIR), Code Search (cross-system medical code lookup), Workflows (healthcare process automation), Agents (HIPAA-compliant AI assistants), Summarize (LLM-ready clinical data), and Cohort Builder (patient cohort definition). The platform is offered via a self-serve developer console with credit-based usage pricing and modular, HIPAA-compliant, SOC 2 Type 2 certified infrastructure for healthcare organizations.

Product overview

PhenoML is a Healthcare AI Developer Platform offering a suite of seven API products: Construe API for medical code extraction, Lang2FHIR API for text-to-FHIR transformation, Code Search API for cross-system medical code lookup, Workflows API for healthcare workflow automation, Agents API for HIPAA-compliant AI assistants, Summarize API for healthcare data summarization, and Cohort Builder API for patient cohort definition. The platform provides a modular, fully configurable architecture that integrates with existing healthcare infrastructure, targeting providers, biopharma, healthtech, payers, and other healthcare stakeholders.

Differentiator

Problem solved

Functional benefit

Products and services

• Construe API Extracts medical codes from clinical text using AI, enabling automated medical coding for healthcare documentation. Targets developers and healthcare organizations that need to convert unstructured clinical notes into standardized medical codes.
• Lang2FHIR API Transforms unstructured clinical text into structured FHIR (Fast Healthcare Interoperability Resources) format with a claimed 100% success rate versus 30-60% for general-purpose commercial APIs. Targets developers building EHR-integrated healthcare applications.
• Code Search API Enables searching medical codes across multiple coding systems, supporting cross-system medical code lookup and interoperability. Targets healthcare developers and organizations that need to navigate and reconcile medical codes across standards.
• Workflows API Automates and generates healthcare workflows, enabling workflow orchestration and automation within clinical and administrative processes. Targets healthcare organizations seeking to streamline operational workflows through AI-driven automation.
• Agents API Deploys HIPAA-compliant AI assistants for healthcare applications, enabling autonomous AI-driven assistance in clinical settings. Targets healthcare developers building conversational or agentic AI applications on protected health information.
• Summarize API Prepares and summarizes healthcare data for use with large language models, making clinical data ready for downstream AI processing. Targets healthcare developers needing to feed LLM pipelines with cleaned, summarized clinical context.
• Cohort Builder API Enables defining patient cohorts using a simple query interface, supporting patient population identification and cohort analysis. Targets healthcare analysts, researchers, and developers in biopharma, providers, and healthtech who need reproducible cohort definitions.

Quantifiable outcome

• 100% success rate for FHIR conversion vs 30-60% for commercial APIs
• +2 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

AI capability6 records

Feature7 records

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Google Cloud Healthcare API: Google Cloud's Healthcare API provides FHIR, HL7v2, and DICOM interoperability services as part of a broader cloud platform. It is a broad incumbent competing in the same FHIR-API category as PhenoML.
• AWS HealthLake: AWS HealthLake is a managed FHIR service for storing, querying, and analyzing clinical data, with interoperability and analytics features. It competes with PhenoML's FHIR-based clinical data platform at the cloud-infrastructure layer.
• Datavant: Datavant is a large-scale health data connectivity company focused on linking and de-identifying clinical data. It is a broader incumbent in healthcare interoperability, adjacent to PhenoML's clinical data standardization focus.

Direct peers

• Health Gorilla: Health Gorilla is a clinical data interoperability network offering FHIR-based APIs for record retrieval, lab data, and clinical exchange — comparable to PhenoML on clinical data standardization and APIs for developers.
• Smile Digital Health: Smile Digital Health builds a FHIR-native data platform used by payers, providers, and health agencies. It overlaps with PhenoML on FHIR-first clinical data infrastructure and APIs.
• Particle Health: Particle Health provides an API for accessing and exchanging clinical patient records via FHIR. It targets digital health builders with developer-first tooling — closely aligned with PhenoML's API-first, developer-console motion.
• 1upHealth: 1upHealth is a FHIR-based healthcare data API platform that aggregates and normalizes clinical data for payers, providers, and app developers — directly comparable to PhenoML's Lang2FHIR and Code Search APIs.
• Redox: Redox is a healthcare API platform that connects EHRs and digital health applications via standardized data exchange. It is the closest comparable to PhenoML's FHIR-first interoperability and EHR-integration positioning.

Emerging players

• Zus Health: Zus Health offers a shared clinical data platform with APIs for patient records and identity resolution. It is a comparable emerging infrastructure layer that healthtech developers plug into, similar to PhenoML's API-first approach.
• Avaneer Health: Avaneer Health is a healthcare data network built by industry incumbents (including major payers and providers) for clinical and administrative data exchange. It is comparable to PhenoML's multi-vertical interoperability thesis.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights5 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about PhenoML