Cataldo Ambulance Service
A privately owned Massachusetts emergency medical services and medical transportation provider.
Last updated November 4, 2026
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Overview
Cataldo Ambulance Service is a privately owned medical transport and emergency medical services company headquartered in Somerville, Massachusetts. Founded by Bob and Diana Cataldo in 1977 as Somerville Ambulance Service, the business began with two ambulances and three employees serving the local Somerville community. It subsequently developed into one of the larger municipal ambulance contractors in Massachusetts, providing advanced life support (ALS), basic life support, non-emergency ambulance transportation, wheelchair-van services, bariatric transport, emergency medical dispatch, event medicine, and mobile integrated health care. The company’s early expansion was closely connected to municipal 9-1-1 contracts. In 1982 it became Chelsea’s sole 9-1-1 provider and began offering ALS services. Its first acquisition came in 1986, when it purchased Caggiano Ambulance Service and assumed the Winthrop contract. Cataldo later expanded northward through the acquisition of Atlantic Ambulance in 2003. Atlantic continued to operate as a North Shore division, and in 2008 it added the Peabody contract and acquired Northshore Ambulance, bringing Salem and Marblehead contracts as well as additional ambulances and support vehicles into the wider operation. Cataldo maintains a mix of branded and acquired operations rather than relying exclusively on a single local base. A 24-hour dispatch and training center opened in Malden in 2009, complementing the Somerville headquarters. The 2017 acquisition of Lyons Ambulance, a company established in 1904, expanded Cataldo’s municipal coverage in the North Shore area and added contracts in Danvers, East Boxford, and Wenham, along with backup ALS responsibilities in several Essex County communities. Beyond conventional ambulance transport, Cataldo has emphasized higher-acuity and community-based services. In 2019, Massachusetts regulators authorized the company’s SmartCare program as a licensed mobile integrated health initiative. SmartCare uses paramedics, point-of-care testing, 12-lead electrocardiograms, and telehealth links to physicians to treat certain patients outside hospital emergency departments. The company also provides medical coverage for large venues and special events, including Fenway Park, TD Garden, and Warrior Arena, and operates specialized resources such as bariatric units, wheelchair-accessible chair cars, bike and utility-vehicle teams, and a mass-casualty response trailer. The COVID-19 pandemic broadened Cataldo’s public-health role. Its personnel supported testing and vaccination operations, including a large clinic at Fenway Park. The company also continued expanding geographically: in 2022 it became the primary EMS provider for Holyoke after the previous vendor withdrew, giving it a presence in Western Massachusetts. In 2024, its education center moved to Woburn and continued offering EMT and paramedic education, together with American Heart Association certification courses and a paramedic program affiliated with Endicott College. Cataldo’s history has also included municipal-contract litigation, billing and reimbursement disputes, regulatory scrutiny, and employment-related proceedings. The best-known legal matter arose from a 1995 Chelsea contract competition and ultimately reached the Massachusetts Supreme Judicial Court, which addressed municipal discretion and the treatment of ambulance contracts under state procurement law. Other proceedings concerned balance billing, documentation for wheelchair-van claims, alleged transport up-coding, pregnancy-related employment rights, and Medicare billing practices. The company has experienced both contract gains and losses. Several municipalities replaced or ended Cataldo arrangements between 2018 and 2025, with officials in some cases citing response-time or compliance concerns, while other communities continued to use Cataldo or awarded it new contracts. In 2025 Cataldo regained the Winthrop municipal contract, returning to a community it had served for many years. The company remains an active regional EMS provider with operations spanning emergency response, scheduled medical transportation, education, event medicine, and mobile integrated health.
History
Cataldo Ambulance Service was established in 1977 by Bob and Diana Cataldo under the name Somerville Ambulance Service. The original operation consisted of two ambulances and three employees serving Somerville, Massachusetts. In 1982, the company became the sole 9-1-1 ambulance provider for Chelsea and added advanced life support capabilities, marking an early move from a small local ambulance company toward a municipal emergency-services contractor. Cataldo made its first acquisition in 1986 by purchasing Caggiano Ambulance Service and taking on the Winthrop contract. Its relationship with Chelsea later produced a significant Massachusetts procurement-law dispute. In 1995, Chelsea solicited competing proposals as its existing contract approached expiration. The city selected CareLine Ambulance Service, but CareLine’s planned acquisition by Laidlaw prevented it from beginning operations. Cataldo sued, arguing that the city’s bid process created enforceable obligations. The litigation moved through the Massachusetts courts: an Appeals Court decision favored Cataldo in part, while the Massachusetts Supreme Judicial Court ultimately affirmed judgment for Chelsea. The final ruling emphasized that ambulance contracts were exempt from the cited procurement statute and that the municipality retained substantial discretion when selecting a provider. The company expanded during the 2000s. In 2003 it acquired Atlantic Ambulance and retained the Atlantic identity for North Shore operations. In 2008, Atlantic gained the Peabody contract and acquired Northshore Ambulance, adding Salem and Marblehead municipal work and a fleet of ambulances, chair cars, and supervisor vehicles. Cataldo opened a round-the-clock dispatch and training center in Malden in 2009 while keeping its Somerville headquarters. In 2017 it acquired Lyons Ambulance, an older Massachusetts EMS company founded in 1904. That transaction added Danvers, East Boxford, and Wenham contracts, together with backup ALS responsibilities in Essex County communities. Cataldo broadened its service model in the late 2010s. In 2019, the Massachusetts Office of Emergency Medical Services granted a waiver that enabled the company to launch SmartCare, described as the state’s first licensed mobile integrated health program. SmartCare paramedics use portable clinical equipment and physician telehealth links to evaluate and treat selected patients in the community, with the goal of reducing avoidable emergency-department use. The company also developed special-event and surge-response capabilities, including ALS event teams, bike and utility-vehicle units, a mass-casualty trailer, and an incident support unit. The COVID-19 period brought Cataldo into large-scale public-health logistics. Its staff supported testing and vaccination sites, including a Fenway Park clinic where company personnel reported administering more than 65,000 vaccinations. Cataldo also continued providing conventional emergency response, interfacility transportation, wheelchair services, bariatric transport, and medical dispatch. From 2018 through 2025, Cataldo lost or relinquished a number of municipal contracts. Saugus selected Armstrong in 2018; Wenham moved to a town-run ambulance service in 2020; Newton and Waltham changed providers in 2020 and 2021; Danvers, Wellesley, and Stoneham selected other providers in 2023 and 2024; and Melrose moved to Armstrong in 2025. Swampscott and Marblehead also planned transitions to Beauport Ambulance in late 2025. These changes occurred alongside continuing Cataldo contracts in numerous Massachusetts communities and a successful return to Winthrop in 2025. The company expanded westward in 2022 when it became Holyoke’s primary EMS provider. It also pursued additional operating capacity in Central Massachusetts, including the purchase of a Worcester property in November 2024. Cataldo’s education function moved to Woburn in 2024, where the Cataldo Education Center offers EMT instruction, American Heart Association courses, and a 14-month paramedic program associated with Endicott College. Cataldo remains a privately owned, active Massachusetts EMS organization with a broad regional footprint.
- 2025
Return to Winthrop
[1]Cataldo won the Winthrop municipal 9-1-1 contract, effective September 8, 2025.
- 2024
Education center relocates to Woburn
[1]The Cataldo Education Center moved to Woburn and continued paramedic, EMT, and certification training.
- 2022
Holyoke expansion
[1]Cataldo became Holyoke’s primary EMS provider.
- 2019
SmartCare authorized
[1]Cataldo launched a licensed mobile integrated health program using paramedic-led community care.
- 2017
Lyons Ambulance acquisition
[1]The acquisition expanded Cataldo’s North Shore contracts and backup ALS coverage.
- 2009
Malden dispatch and training hub opens
[1]Cataldo opened a 24-hour dispatch and training facility in Malden.
- 2003
Atlantic Ambulance acquisition
[1]Cataldo acquired Atlantic Ambulance and expanded its North Shore presence.
- 1986
First acquisition
[1]The company acquired Caggiano Ambulance Service and assumed the Winthrop contract.
- 1982
Chelsea 9-1-1 and ALS expansion
[1]Cataldo became Chelsea’s sole 9-1-1 provider and began offering advanced life support services.
- 1977
Company founded in Somerville
[1]Bob and Diana Cataldo founded Somerville Ambulance Service with two ambulances and three employees.
Products and positioning
A regional, full-service Massachusetts EMS provider combining municipal 9-1-1 coverage, ALS ambulance operations, scheduled medical transportation, event medicine, workforce education, and community-based mobile integrated health services.
Emergency medical services
Municipal 9-1-1 ambulance service
Cataldo operates ALS and emergency ambulance units under municipal contracts, responding to 9-1-1 calls and providing emergency medical transport across communities in eastern and western Massachusetts.
Mobile integrated health · 2019
SmartCare
SmartCare is Cataldo’s paramedic-led mobile integrated health service. Teams can bring point-of-care testing, ECG capability, and physician telehealth support to patients outside the hospital setting.
Medical transportation
Non-emergency and wheelchair transportation
The company provides scheduled ambulance transportation, wheelchair-accessible chair-car trips, and specialized bariatric transport for patients traveling to appointments, facilities, or other medical destinations.
Event medicine
Event medical services
Cataldo supplies on-site ALS, first-aid, and specialized response teams for sports venues, concerts, and major public events, including operations associated with Fenway Park and TD Garden.
Healthcare education
Education and certification programs
The Cataldo Education Center provides EMT and paramedic education, simulation and clinical training, and American Heart Association BLS, ACLS, and PALS courses. Its paramedic program is affiliated with Endicott College.
Controversies
2021
Medicare consolidated-billing settlement
HHS-OIG imposed a $704,706 penalty after finding that Cataldo billed Medicare Part B for transports covered by skilled-nursing-facility consolidated billing. The company was placed under a three-year compliance plan.
2019
Pregnancy-related employment ruling
The Massachusetts Commission Against Discrimination ordered Cataldo to reinstate an EMT dismissed while on pregnancy-related bed rest and to pay back wages, interest, and punitive damages. The order was affirmed in 2023.
2016
MassHealth wheelchair-transport documentation audit
A state audit reported that Cataldo lacked medical-necessity forms for some wheelchair-van trips billed to MassHealth, placing up to $942,000 in payments at risk.
2016
Alleged BLS-to-ALS up-coding case
The Massachusetts Attorney General sued Cataldo over allegations that basic life support transports had been billed as advanced life support transports. The reported amount at issue was approximately $600,000.
2009
Balance-billing assurance
The Massachusetts Attorney General obtained an assurance of discontinuance concerning balance billing of patients involved in automobile crashes. Cataldo refunded affected patients, paid a civil amount of $100,000, and revised its billing procedures.
Brand decisions
2024
Investment in Central Massachusetts operationsStrategyBackground
Cataldo’s expansion beyond Greater Boston and the North Shore created a need for additional operating locations.
Action taken
The company purchased a 5,900-square-foot property on Worcester’s West Side in November 2024.
Aftermath
The property was intended to support further Central Massachusetts operations.
Property purchase price. $1.15 million (November 2024)
2019
Launch of SmartCareProduct launchBackground
Cataldo pursued a model that could address selected urgent-care needs in homes and reduce unnecessary emergency-department use.
Action taken
The company launched SmartCare after receiving a Massachusetts EMS regulatory waiver.
Aftermath
SmartCare became a distinctive community-care offering within Cataldo’s broader emergency transportation portfolio.
2017
Acquisition of Lyons AmbulanceM&ABackground
Lyons Ambulance had a long operating history in Massachusetts and held several North Shore-area relationships.
Action taken
Cataldo acquired Lyons Ambulance.
Aftermath
Cataldo added Danvers, East Boxford, and Wenham contracts, plus backup ALS responsibilities in several nearby communities.
2003
Acquisition of Atlantic AmbulanceM&ABackground
Cataldo sought to extend its regional operating footprint beyond Somerville and nearby municipalities.
Action taken
It acquired Atlantic Ambulance and maintained Atlantic as a North Shore operating identity.
Aftermath
The transaction established a platform for later North Shore contract and fleet expansion.
1995
Challenge to Chelsea ambulance contract awardOtherBackground
Chelsea selected CareLine Ambulance over Cataldo during a contract competition, although CareLine did not begin service before its planned corporate transaction.
Action taken
Cataldo challenged the award in court. The litigation ultimately reached the Massachusetts Supreme Judicial Court.
Aftermath
The SJC ruled for Chelsea, holding that ambulance contracts were exempt from the cited procurement statute and that the city could select a higher-service proposal when minimum requirements and price conditions were satisfied.
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