Health Services Integration

What Health Services Integration does

Health Services Integration (HSI), founded in 1999 and headquartered in Santa Rosa, California, provides revenue cycle management and flight communications services exclusively to the U.S. Emergency Medical Services (EMS) transportation industry. The company operates two core service lines: Air Revenue Cycle Management (covering fixed wing, rotor wing, public, private, and hospital-based air ambulance programs including Letters of Medical Necessity) and Ground Revenue Cycle Management (serving private ambulance companies, municipal fire/EMS departments, and hospital-based ground transport). An Advisory Council offers consulting across operations, billing, sales/marketing, finance, and technology for EMS programs not yet ready for full-service partnership.

HSI's technology stack is built around two proprietary systems: the PULSE Client Revenue Portal, a cloud-based client-facing platform providing 24x7x365 access to claims, patient data, payer information, dashboards, and two-way communication tools; and the FlightLink CAD Portal, which delivers real-time operational data on transport volumes, missed flights, and out-of-service time for flight communications and transfer center clients. Underpinning these is a proprietary performance management platform that tracks each claim from transport documentation through zero-balance status using algorithm-driven workflows with continuous process improvement, supported by a specialized payer research team for sourcing insurance information on unidentified ('John Doe') patients.

HSI's commercial model is a contingency-based, percentage-of-net-revenue transaction fee structure in which the company is paid only when the client is paid, with pricing undisclosed and quote-based. Go-to-market is sales-led through direct client partnerships and industry referrals targeting municipal, private, and hospital-based EMS agencies. The firm employs 101-250 people, with a revenue cycle team grown from 4 to 60+ staff under Director of Operations Joanne Alvarado. Operations are domestic U.S. only, and compliance posture includes SOC 1 Type 2 and HIPAA with a Certified Ambulance Privacy Officer on staff. In February 2026, HSI was acquired by EMS|MC, backed by Investment Partners; terms were undisclosed.

Name

Health Services Integration

Legal name

Health Services Integration

Website

https://hsihealth.com

Company type

Private

Founded year

1999

Operating status

Acquired

Headcount range

101–250 employees

Short description

Health Services Integration is a U.S. revenue cycle management and flight communications firm serving the Emergency Medical Services industry. It provides contingency-based billing, claims management, and proprietary PULSE/FlightLink portals to municipal, private, and hospital-based air and ground ambulance programs.

Ownership category

akta.pro rank

Headquarters

HQ city

Santa Rosa

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Revenue Cycle Management Services: Percentage-based professional service fees charged on net revenue received by clients. HSI operates on a contingency basis where fees are calculated as a percentage of payments received, aligning company incentives with client success.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Health Services Integration (HSI) provides end-to-end revenue cycle management services for Emergency Medical Services (EMS) transportation agencies, including fixed wing, rotor wing, public, private, and hospital-based air ambulance programs and ground ambulance services. The company manages every stage from provider enrollment, coding, and claims submission through appeals, payment posting, and recovery, supported by proprietary technology platforms PULSE and FlightLink. Pricing is contingency-based, with HSI charging a percentage of net revenue received by clients.

Product overview

Health Services Integration (HSI) offers a unified platform of EMS revenue cycle management services organized around two core service lines — Air Revenue Cycle Management and Ground Revenue Cycle Management — supported by two proprietary technology portals: the PULSE Client Revenue Portal for billing transparency and analytics, and the FlightLink CAD Portal for operational data. The company also provides Advisory Council consulting services for clients seeking industry expertise without immediate full-service partnership. The architecture consists of a cloud-based client-facing portal layer (PULSE) combined with internal algorithm-driven workflow systems, providing end-to-end visibility from transport documentation through zero-balance claims resolution.

Differentiator

Problem solved

Functional benefit

Products and services

• Air Revenue Cycle Management Comprehensive revenue cycle management services for fixed wing, rotor wing, public, private, and hospital-based air ambulance programs, including letters of medical necessity, billing, coding, compliance, and appeals.
• Ground Revenue Cycle Management Full-service revenue cycle management for private ambulance companies, municipal departments, and hospital-based ground ambulance services, covering provider enrollment, compliance review, insurance verification, coding, claim submission, follow-up, appeals, and patient billing.
• Advisory Council Services

Quantifiable outcome

• 60+ employee revenue cycle team grown from original 4-person billing operation

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• EMS|MCmajorOthers · 18 February 2026EMS|MC, backed by Investment Partners, acquired Health Services Integration to broaden its healthcare financial operations services. Financial terms were not disclosed. The acquisition focuses on integrating advanced technologies such as AI analytics, automation, and cloud infrastructure into the service portfolio.

Scale indicators2 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• ESO Solutions: ESO provides EMS software, billing, and analytics for fire departments and ambulance agencies, and through its Digitech acquisition competes directly with HSI's full-service revenue cycle offering for both ground and air transport clients.
• ImageTrend: ImageTrend offers EMS billing, ePCR, and fleet software used by a large share of US fire and EMS agencies. Its Elite billing service is a direct alternative to HSI's contingency-based ground RCM, with comparable vertical specialization in ambulance services.
• AIM EMS Software & Services: AIM EMS provides billing, dispatch, and patient care reporting software for ambulance services. Its contingency-based billing service and ambulance-specific workflows closely mirror HSI's offering and target the same customer segments.
• ZOLL Data Systems: ZOLL Data Systems provides end-to-end EMS billing, dispatch, and ePCR software to private and municipal ambulance services, directly overlapping with HSI's ground revenue cycle management offering and competing for the same municipal client base.
• Digitech (an ESO company): Digitech provides EMS billing and revenue cycle management services for ground ambulance providers, including municipal and private agencies. It is one of HSI's closest direct peers in scale, vertical focus, and service model.

Broad incumbents

• R1 RCM: R1 RCM (now including Cloudmed) is a leading enterprise RCM outsourcing and SaaS provider serving hospitals, health systems, and physician groups. Its scale and AI-driven automation set the competitive benchmark that mid-sized specialists like HSI must differentiate against.
• Waystar: Waystar is a large healthcare revenue cycle management platform serving hospitals and health systems with claims management, patient billing, and analytics. It represents the scaled, multi-vertical competitor that may increasingly pursue EMS agency contracts.
• Experian Health: Experian Health offers eligibility verification, claims management, and patient payment solutions to healthcare providers. As a broad incumbent, it competes for RCM wallet share that HSI pursues within EMS agencies and hospital-based transport programs.

Others

• EMS|MC: EMS|MC is the PE-backed strategic acquirer of HSI and a broader provider of EMS financial operations services. While now HSI's parent, it is a relevant comparable for understanding the platform into which HSI has been integrated and the strategic direction of the combined entity.

Emerging players

• RevSpring: RevSpring provides healthcare billing, patient engagement, and propensity-to-pay analytics used by providers to optimize revenue cycle workflows. While not EMS-native, its patient billing and statement capabilities overlap with HSI's patient-facing collection workflows.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

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 Health Services Integration