Envision Healthcare 10-K 2014 FY Annual report

QuickLinks -- Click here to rapidly navigate through this document

Exhibit 21.1

Subsidiaries of
Envision Healthcare Holdings, Inc.

Entity Name	Jurisdiction of Formation	Doing Business As
Envision Healthcare Intermediate Corporation	Delaware	N/A
Envision Healthcare Corporation	Delaware	N/A
Emergency Medical Services LP Corporation	Delaware	N/A
EmCare HoldCo, Inc.	Delaware	N/A
EmCare Holdings, Inc.	Delaware	N/A
EmCare, Inc.	Delaware	N/A
EMCA Insurance Company, Ltd. N/A	Cayman Islands	N/A
EmCare of California, Inc.	California	N/A
EmCare Physician Providers, Inc.	Missouri	N/A
EmCare Physician Services, Inc.	Delaware	N/A
Emergency Medicine Education Systems, Inc.	Texas	N/A
Healthcare Administrative Services, Inc.	Delaware	Healthcare Services of Georgia, Inc.
Reimbursement Technologies, Inc.	Pennsylvania	N/A
American Emergency Physicians Management, Inc.	California	N/A
Physician Account Management, Inc.	Florida	N/A
Provider Account Management, Inc.	Delaware	N/A
EMS Management, LLC	Delaware	N/A
American Medical Response, Inc.	Delaware	N/A
Hank's Acquisition Corp.	Alabama	N/A
Fountain Ambulance Service, Inc.	Alabama	N/A
MedLife Emergency Medical Service, Inc.	Alabama	N/A
Affilion, Inc.	Delaware	N/A
AMR HoldCo, Inc.	Delaware	N/A
Blythe Ambulance Service	California	N/A
Clinical Partners Management Company, LLC	Texas	N/A
EmCare Anesthesia Providers, Inc.	Delaware	N/A
American Medical Response Northwest, Inc.	Oregon	AMR Northwest, Inc.
		Buck Medical Services, Inc.
		Buck Healthcare Services
		Buck Medical
		Clark County Wheelchair Transportation
		Medix
		Pramed
		American Medical Response (AMR)
American Medical Response West	California	American Medical Response
		AMR
		Northern California Training Institute
		American Medical Response (AMR)
		911 Emergency Services
		Sonoma Life Support
		Mobile Life Support
Metropolitan Ambulance Service	California	N/A

Entity Name	Jurisdiction of Formation	Doing Business As
American Medical Response of Inland Empire	California	AMR
		American Medical Response
Desert Valley Medical Transport, Inc.	California	American Medical Response (AMR)
Springs Ambulance Service, Inc.	California	American Medical Response (AMR)
American Medical Response of Colorado, Inc.	Delaware	N/A
International Life Support, Inc.	Hawaii	American Medical Response (AMR)
Medevac MidAmerica, Inc.	Missouri	American Medical Response
Medevac Medical Response, Inc.	Missouri	American Medical Response
American Medical Response of Oklahoma, Inc.	Delaware	American Medical Response (AMR)
American Medical Response of Texas, Inc.	Delaware	American Medical Response
Kutz Ambulance Service, Inc.	Wisconsin	American Medical Response (AMR)
American Medical Response Holdings, Inc.	Delaware	N/A
American Medical Response Management, Inc.	Delaware	N/A
Regional Emergency Services, LP	Delaware	N/A
Global Medical Response of India Limited	Mauritius	N/A
Gold Coast Ambulance Service	California	N/A
Northwood Anesthesia Associates, LLC	Florida	N/A
River Medical Incorporated	Arizona	N/A
A1 Leasing, Inc.	Florida	N/A
Florida Emergency Partners, Inc.	Texas	N/A
Mobile Medic Ambulance Service, Inc.	Delaware	American Medical Response (AMR)
Metro Ambulance Service, Inc.	Delaware	American Medical Response (AMR)
Metro Ambulance Service (Rural), Inc.	Delaware	American Medical Response
		AMR
Medic One Ambulance Services, Inc.	Delaware	American Medical Response
		AMR
American Medical Response of South Carolina, Inc.	Delaware	American Medical Response
		AMR
American Medical Response of North Carolina, Inc.	Delaware	N/A
American Medical Response of Georgia, Inc.	Delaware	N/A
Troup County Emergency Medical Services, Inc.	Georgia	N/A
Randle Eastern Ambulance Service, Inc.	Florida	American Medical Response
Medi-Car Systems, Inc.	Florida	American Medical Response
		AMR
Medi-Car Ambulance Service, Inc.	Florida	American Medical Response
American Medical Response of Tennessee, Inc.	Delaware	American Medical Response (AMR)
Physicians & Surgeons Ambulance Service, Inc.	Ohio	American Medical Response
		AMR
		American Medical Response of Ohio
		AMR of Ohio
		P & S Ambulance Service
American Medical Response of Illinois, Inc.	Delaware	American Medical Response
Midwest Ambulance Management Company	Delaware	N/A

Entity Name	Jurisdiction of Formation	Doing Business As
Seawall Acquisition, LLC	Delaware	N/A
Sun Devil Acquisition, LLC	Delaware	N/A
V.I.P. Professional Services, Inc.	California	N/A
Paramed, Inc.	Michigan	American Medical Response
		Ambucare
		E.M.T.S., Inc.
		Fleet Ambulance
		American Medical Response of Michigan
		AMR of Michigan
		ABC Courier Service
		Life Line Ambulance Service, Inc.
		Paramed
		Paravan
		Pulse Emergency Medical Systems
		Riverside E.M.S.
		Suburban Ambulance Service
Mercy Ambulance of Evansville, Inc.	Indiana	American Medical Response—AMR
		Ambucare
		Mercy Ambucare
		Mercy Ambulance of Evansville
		AMR
		AMR of Indiana
		American Medical Response of Indiana
		American Medical Response
		Premier Mobility Service
Tidewater Ambulance Service, Inc.	Virginia	American Medical Response (AMR)
American Medical Response of Connecticut, Incorporated	Connecticut	AMR
		American Medical Response
American Medical Response of Massachusetts, Inc.	Massachusetts	Midland Ambulance Service
		American Medical Response (AMR)
		American Medical Response
		AMR
AMR Brockton, L.L.C.	Delaware	N/A
American Medical Response Mid-Atlantic, Inc.	Pennsylvania	Event Medical Services
		American Medical Response (AMR)
		American Medical Response
		AMR
American Medical Response Delaware Valley, LLC	Delaware	N/A
Ambulance Acquisition, Inc.	Delaware	N/A
Metro Ambulance Services, Inc.	Georgia	N/A
Broward Ambulance, Inc.	Delaware	American Medical Response

Entity Name	Jurisdiction of Formation	Doing Business As
Atlantic Ambulance Services Acquisition, Inc.	Delaware	American Medical Response
		AMR
Atlantic/Key West Ambulance, Inc.	Delaware	American Medical Response
Atlantic/Palm Beach Ambulance, Inc.	Delaware	American Medical Response
Seminole County Ambulance, Inc.	Delaware	American Medical Response
LifeFleet Southeast, Inc.	Florida	American Medical Response
American Medical Pathways, Inc.	Delaware	N/A
ProvidaCare, L.L.C.	Texas	N/A
Adam Transportation Service, Inc.	New York	American Medical Response
Associated Ambulance Service, Inc.	New York	American Medical Response
Park Ambulance Service Inc.	New York	American Medical Response
Five Counties Ambulance Service, Inc.	New York	American Medical Response
Sunrise Handicap Transport Corp.	New York	American Medical Response
STAT Healthcare, Inc.	Delaware	N/A
American Medical Response Ambulance Service, Inc.	Delaware	American Medical Response (AMR)
		Mercy Ambulance of Fort Wayne
		American Medical Response
		American Medical Response of Indiana
		AMR of Fort Wayne
		AMR of Indiana
		Central Ambulance
		Crossroads Ambulance Service
		American Medtrans
		Shepard Ambulance
		Shepard Ambulance, Inc.
		Shepard Paramedics, Inc.
		Spokane Ambulance
		Yakima Medic 1
		American Medical Response (AMR)
		National College of Technical Instruction
		NCTI
Mercy, Inc.	Nevada	American Medical Response (AMR)
American Investment Enterprises, Inc.	Nevada	Nevada Medi-Car
LifeCare Ambulance Service, Inc.	Illinois	N/A
TEK Ambulance, Inc.	Illinois	American Medical Response (AMR)
Mercy Life Care	California	N/A
Hemet Valley Ambulance Service, Inc.	California	American Medical Response (AMR)
American Medical Response of Southern California	California	American Medical Response (AMR)
Medic One of Cobb, Inc.	Georgia	N/A
Puckett Ambulance Service, Inc.	Georgia	N/A
Global Medical Response, Inc.	Delaware	N/A

Entity Name	Jurisdiction of Formation	Doing Business As
Global Emergency Medical Services Limited	Trinidad	N/A
	Tobago
Global Medical Response of Trinidad & Tobago, Ltd. (Joint Venture)	Trinidad	N/A
	Tobago
Global Medical Response of Barbados Limited	Barbados	N/A
EHR Management Co.	Delaware	N/A
Air Ambulance Specialists, Inc.	Colorado	N/A
Radstaffing Management Solutions, Inc.	Delaware	N/A
Mission Care Services, LLC	Missouri	Access2Care
Mission Care of Illinois, LLC	Illinois	Abbott EMS
Mission Care of Missouri, LLC	Missouri	Abbott EMS
		Abbott Ambulance
Access2Care, LLC	Missouri	N/A
Abbott Ambulance, Inc.	Missouri	Abbott EMS
		Abbott Services
		IHM Health Studies Center
Nevada Red Rock Holdings, Inc.	Delaware	N/A
Nevada Red Rock Ambulance, Inc.	Delaware	N/A
MedicWest Holdings, Inc.	Delaware	N/A
MedicWest Ambulance, Inc.	Nevada	MedicWest
		MedicWest Ambulance
		MedicWest EMS
		MedicWest Health Science Center
Radiology Staffing Solutions, Inc.	Delaware	N/A
Arizona Oasis Acquisition, Inc.	Delaware	N/A
Templeton Readings, LLC	Maryland	N/A
American Medical Response of Canada Inc.	Canada	Services médicaux d'urgence de l'Amérique (Canada)
		Aero Medical Response of Canada
		Services médicaux aériens du Canada
		Canadian Aero Medical Response
EMS Offshore Medical Services, LLC	Delaware	N/A
EverRad, LLC	Florida	N/A
Apex Acquisition, LLC	Delaware	N/A
MSO Newco, LLC	Delaware	N/A
Pinnacle Consultants Mid-Atlantic, L.L.C.	Texas	N/A
Holiday Acquisition Company, Inc.	Colorado	N/A
BestPractices, Inc.	Virginia	N/A
Medics Ambulance Service, Inc.	Florida	N/A
Medics Subscription Services, Inc.	Florida	N/A
Medics Emergency Services of Palm Beach County, Inc.	Florida	N/A
Medics Ambulance, Inc.	Florida	N/A
Medics Transport Services, Inc.	Florida	N/A
Medics Ambulance Service (Dade), Inc.	Florida	N/A
Hawkeye Holdco LLC	Delaware	N/A
Acute Management, LLC	Texas	N/A

Entity Name	Jurisdiction of Formation	Doing Business As
Evolution Health, LLC	Delaware	N/A
APH Laboratory Services, Inc.	Texas	N/A
EMSC ServicesCo, LLC	Delaware	N/A
Spotlight HoldCo, LLC	Delaware	N/A
Rose Radiology, LLC	Texas	N/A
Guardian Healthcare Group, Inc.	Delaware	N/A
Guardian Healthcare Holdings, Inc.	Delaware	Guardian Healthcare
Agape Healthcare Agency, LLC	Ohio	Gem City Home Care
OHERBST, Inc.	Texas	Guardian Healthcare
TKG, Inc.	Oklahoma	Millennium Home Care of SE Oklahoma
JLM Healthcare, Inc.	Texas	Guardian Healthcare
KMAC, Inc.	Texas	Guardian Healthcare
Care Connection of Cincinnati, LLC	Ohio	Care Connection of Cincinnati
Gem City Home Care, LLC	Ohio	Gem City Home Care
Guardian Health Care, Inc.	Texas	Guardian Healthcare
S. Fisher and S. Thomas, Inc.	Texas	Millennium Home Care of NE Texas
Guardian Ohio Newco, LLC	Ohio	N/A
Health Priority Home Care, Inc.	Texas	Guardian Healthcare
Velita Smith Home Health, Inc.	Texas	Guardian Healthcare
Accent Home Health Care Inc.	Indiana	N/A
Evolution Mobile Imaging, LLC	Delaware	N/A
Greater Pinellas Transportation Management Services, Inc.	Florida	N/A
T.M.S. Management Group, Inc.	Florida	N/A
Transportation Management Services of Brevard, Inc.	Florida	N/A
CMORx, LLC	Texas	N/A
Life Line Ambulance Service, Inc	Arizona	Life Line Ambulance, Life Line
		EMS, Medi-Cab
Herren Enterprises, Inc.	California	Doctor's Ambulance Service
Envision Healthcare Intermediate Corporation	Delaware	N/A
Envision Healthcare Corporation	Delaware	N/A
Emergency Medical Services LP Corporation	Delaware	N/A
EmCare HoldCo, Inc.	Delaware	N/A
EmCare Holdings, Inc.	Delaware	N/A
EmCare, Inc.	Delaware	Pinellas County EMS Medical Directors
		Pinellas County EMS Office of the Medical Directors
		EmCare Management
		Qualitas Locum Tenens
EMCA Insurance Company, Ltd. N/A	Cayman Islands	N/A
EmCare of California, Inc.	California	N/A
EmCare Physician Providers, Inc.	Missouri	N/A
EmCare Physician Services, Inc.	Delaware	N/A
Emergency Medicine Education Systems, Inc.	Texas	N/A
Healthcare Administrative Services, Inc.	Delaware	Healthcare Services of Georgia, Inc.
Reimbursement Technologies, Inc.	Pennsylvania	N/A

Entity Name	Jurisdiction of Formation	Doing Business As
American Emergency Physicians Management, Inc.	California	N/A
Physician Account Management, Inc.	Florida	N/A
Provider Account Management, Inc.	Delaware	N/A
EMS Management, LLC	Delaware	N/A
American Medical Response, Inc.	Delaware	River Medical
		AMR Arlington
		Arlington EMS
		Hunt County EMS
Hank's Acquisition Corp.	Alabama	N/A
Fountain Ambulance Service, Inc.	Alabama	N/A
MedLife Emergency Medical Service, Inc.	Alabama	N/A
Affilion, Inc.	Delaware	N/A
AMR HoldCo, Inc.	Delaware	N/A
Blythe Ambulance Service	California	N/A
Clinical Partners Management Company, LLC	Texas	N/A
EmCare Anesthesia Providers, Inc.	Delaware	N/A
American Medical Response Northwest, Inc.	Oregon	American Medical Response AMR
American Medical Response West	California	American Medical Response
		AMR
		Alameda County AMR
		Northern California Training Institute
		911 Emergency Services
		Sonoma Life Support
		Mobile Life Support
		AMR Napa County
		Santa Clara County EMS
Metropolitan Ambulance Service	California	N/A
American Medical Response of Inland Empire	California	AMR
		American Medical Response
Desert Valley Medical Transport, Inc.	California	American Medical Response (AMR)
Springs Ambulance Service, Inc.	California	American Medical Response (AMR)
American Medical Response of Colorado, Inc.	Delaware	N/A
International Life Support, Inc.	Hawaii	American Medical Response (AMR)
Medevac MidAmerica, Inc.	Missouri	American Medical Response
Medevac Medical Response, Inc.	Missouri	American Medical Response
American Medical Response of Oklahoma, Inc.	Delaware	American Medical Response (AMR)
American Medical Response of Texas, Inc.	Delaware	American Medical Response
Kutz Ambulance Service, Inc.	Wisconsin	American Medical Response (AMR)
American Medical Response Holdings, Inc.	Delaware	N/A
American Medical Response Management, Inc.	Delaware	N/A
Regional Emergency Services, LP	Delaware	N/A
Global Medical Response of India Limited	Mauritius	N/A
Gold Coast Ambulance Service	California	N/A
Northwood Anesthesia Associates, LLC	Florida	N/A
River Medical Incorporated	Arizona	American Medical Response

Entity Name	Jurisdiction of Formation	Doing Business As
A1 Leasing, Inc.	Florida	N/A
Florida Emergency Partners, Inc.	Texas	N/A
Mobile Medic Ambulance Service, Inc.	Delaware	American Medical Response (AMR)
Metro Ambulance Service, Inc.	Delaware	American Medical Response (AMR)
Metro Ambulance Service (Rural), Inc.	Delaware	American Medical Response
		AMR
Medic One Ambulance Services, Inc.	Delaware	American Medical Response
		AMR
American Medical Response of South Carolina, Inc.	Delaware	American Medical Response
		AMR
American Medical Response of North Carolina, Inc.	Delaware	N/A
American Medical Response of Georgia, Inc.	Delaware	N/A
Troup County Emergency Medical Services, Inc.	Georgia	N/A
Randle Eastern Ambulance Service, Inc.	Florida	American Medical Response
		AMR On-Guard
		Medics Ambulance Service
Medi-Car Systems, Inc.	Florida	American Medical Response
		AMR
Medi-Car Ambulance Service, Inc.	Florida	American Medical Response
American Medical Response of Tennessee, Inc.	Delaware	American Medical Response (AMR)
Physicians & Surgeons Ambulance Service, Inc.	Ohio	American Medical Response
		AMR
		American Medical Response of Ohio
		AMR of Ohio
		P & S Ambulance Service
American Medical Response of Illinois, Inc.	Delaware	American Medical Response
Midwest Ambulance Management Company	Delaware	N/A
Seawall Acquisition, LLC	Delaware	N/A
Sun Devil Acquisition, LLC	Delaware	N/A
V.I.P. Professional Services, Inc.	California	N/A
Paramed, Inc.	Michigan	American Medical Response
		Ambucare
		American Medical Response of Michigan
		AMR of Michigan
		Paramed
Mercy Ambulance of Evansville, Inc.	Indiana	American Medical Response—AMR
		Praebeon
		Praebeon Business Solutions
Tidewater Ambulance Service, Inc.	Virginia	American Medical Response (AMR)
American Medical Response of Connecticut, Incorporated	Connecticut	AMR
		American Medical Response
American Medical Response of Massachusetts, Inc.	Massachusetts	American Medical Response
		AMR
AMR Brockton, L.L.C.	Delaware	N/A

Entity Name	Jurisdiction of Formation	Doing Business As
American Medical Response Mid-Atlantic, Inc.	Pennsylvania	American Medical Response
		AMR
		American Medical Response—Nova
		Praebeon
American Medical Response Delaware Valley, LLC	Delaware	N/A
Ambulance Acquisition, Inc.	Delaware	N/A
Metro Ambulance Services, Inc.	Georgia	N/A
Broward Ambulance, Inc.	Delaware	American Medical Response
		AMR
		Access2Care
		AMR On-Guard
Atlantic Ambulance Services Acquisition, Inc.	Delaware	American Medical Response
		AMR
Atlantic/Key West Ambulance, Inc.	Delaware	American Medical Response
Atlantic/Palm Beach Ambulance, Inc.	Delaware	American Medical Response
Seminole County Ambulance, Inc.	Delaware	American Medical Response
LifeFleet Southeast, Inc.	Florida	American Medical Response
		AMR
		AMR On-Guard
		Medtrans
		Orlando Ambulance
		Orlando EMS
American Medical Pathways, Inc.	Delaware	N/A
ProvidaCare, L.L.C.	Texas	N/A
Adam Transportation Service, Inc.	New York	American Medical Response
Associated Ambulance Service, Inc.	New York	American Medical Response
Park Ambulance Service Inc.	New York	American Medical Response
Five Counties Ambulance Service, Inc.	New York	American Medical Response
Sunrise Handicap Transport Corp.	New York	American Medical Response
STAT Healthcare, Inc.	Delaware	N/A
American Medical Response Ambulance Service, Inc.	Delaware	American Medical Response AMR
		Dallas EMS
		Fairview EMS
		Stillwater EMS
		Hunt County EMS/Hunt Regional Healthcare
		National College of Technical Instruction
		NCTI
Mercy, Inc.	Nevada	American Medical Response (AMR)
American Investment Enterprises, Inc.	Nevada	Nevada Medi-Car
LifeCare Ambulance Service, Inc.	Illinois	N/A
TEK Ambulance, Inc.	Illinois	American Medical Response (AMR)
Mercy Life Care	California	N/A
Hemet Valley Ambulance Service, Inc.	California	American Medical Response (AMR)

Entity Name	Jurisdiction of Formation	Doing Business As
American Medical Response of Southern California	California	American Medical Response (AMR)
Medic One of Cobb, Inc.	Georgia	N/A
Puckett Ambulance Service, Inc.	Georgia	N/A
Global Medical Response, Inc.	Delaware	N/A
Global Emergency Medical Services Limited	Trinidad	N/A
	Tobago
Global Medical Response of Trinidad & Tobago, Ltd. (Joint Venture)	Trinidad	N/A
	Tobago
Global Medical Response of Barbados Limited	Barbados	N/A
EHR Management Co.	Delaware	N/A
Air Ambulance Specialists, Inc.	Colorado	AMR Air Ambulance
Radstaffing Management Solutions, Inc.	Delaware	N/A
Mission Care Services, LLC	Missouri	Access2Care
Mission Care of Illinois, LLC	Illinois	Abbott EMS
Mission Care of Missouri, LLC	Missouri	Abbott EMS
		Abbott Ambulance
Access2Care, LLC	Missouri	Access2Care
		Access2Care of New Jersey
Abbott Ambulance, Inc.	Missouri	Abbott EMS
		Abbott Services
		Abbott Solutions
		IHM Academy of EMS
Nevada Red Rock Holdings, Inc.	Delaware	N/A
Nevada Red Rock Ambulance, Inc.	Delaware	N/A
MedicWest Holdings, Inc.	Delaware	N/A
MedicWest Ambulance, Inc.	Nevada	MedicWest
		MedicWest Ambulance
		MedicWest EMS
		MedicWest Health Science Center
Radiology Staffing Solutions, Inc.	Delaware	N/A
Arizona Oasis Acquisition, Inc.	Delaware	N/A
Templeton Readings, LLC	Maryland	N/A
EMS Offshore Medical Services, LLC	Delaware	AMR Onsite Safety & Health
		AMR Onsite Safety & Health Services
EverRad, LLC	Florida	N/A
Apex Acquisition, LLC	Delaware	N/A
MSO Newco, LLC	Delaware	N/A
Pinnacle Consultants Mid-Atlantic, L.L.C.	Texas	N/A
Holiday Acquisition Company, Inc.	Colorado	N/A
BestPractices, Inc.	Virginia	N/A
Medics Ambulance Service, Inc.	Florida	N/A
Medics Subscription Services, Inc.	Florida	N/A
Medics Emergency Services of Palm Beach County, Inc.	Florida	N/A
Medics Ambulance, Inc.	Florida	N/A
Medics Transport Services, Inc.	Florida	N/A
Medics Ambulance Service (Dade), Inc.	Florida	N/A

Entity Name	Jurisdiction of Formation	Doing Business As
Hawkeye Holdco LLC	Delaware	N/A
Acute Management, LLC	Texas	N/A
Evolution Health, LLC	Delaware	N/A
APH Laboratory Services, Inc.	Texas	N/A
EMSC ServicesCo, LLC	Delaware	N/A
Spotlight HoldCo, LLC	Delaware	N/A
Rose Radiology, LLC	Texas	N/A
Guardian Healthcare Group, Inc.	Delaware	N/A
Guardian Healthcare Holdings, Inc.	Delaware	Guardian Healthcare
Agape Healthcare Agency, LLC	Ohio	Gem City Home Care
OHERBST, Inc.	Texas	Guardian Healthcare
TKG, Inc.	Oklahoma	Millennium Home Care of SE Oklahoma
JLM Healthcare, Inc.	Texas	Guardian Healthcare
KMAC, Inc.	Texas	Guardian Healthcare
Care Connection of Cincinnati, LLC	Ohio	Care Connection of Cincinnati
Gem City Home Care, LLC	Ohio	Gem City Home Care
Guardian Health Care, Inc.	Texas	Guardian Healthcare
S. Fisher and S. Thomas, Inc.	Texas	Millennium Home Care of NE Texas
Guardian Ohio Newco, LLC	Ohio	N/A
Health Priority Home Care, Inc.	Texas	Guardian Healthcare
Velita Smith Home Health, Inc.	Texas	Guardian Healthcare
Accent Home Health Care Inc.	Indiana	N/A
Evolution Mobile Imaging, LLC	Delaware	N/A
Greater Pinellas Transportation Management Services, Inc.	Florida	N/A
T.M.S. Management Group, Inc.	Florida	N/A
Transportation Management Services of Brevard, Inc.	Florida	N/A
CMORx, LLC	Texas	N/A
Life Line Ambulance Service, Inc	Arizona	Life Line Ambulance, Life Line
		EMS, Medi-Cab
Herren Enterprises, Inc.	California	Doctor's Ambulance Service
Phoenix Physicians, LLC	Florida	N/A
Dan River Emergency Services, LLC	Virginia	N/A
Emergency Services of Central Ohio, LLC.	Ohio	N/A
Phoenix Emergency Medicineof Broward, LLC	Florida	N/A
Phoenix Emergency Physicians of the Midwest, LLC	Florida	N/A
Phoenix Emergency Physicians of the Northeast, LLC.	Florida	N/A
Phoenix Emergency Solutions of the Southeast, LLC.	Florida	N/A
Phoenix Emergency Services of Inverness, LLC	Florida	N/A
Phoenix Emergency Services of Leesburg, LLC	Florida	N/A
Phoenix Obstetrics/Gynecology, LLC	Florida	N/A
Phoenix Pediatrics of Broward, LLC	Florida	N/A
Evergreen Emergency Services of Allentown, Inc.	Pennsylvania	N/A
Arkansas River Emergency Services, LLC	Arkansas	N/A
Vista Staffing Solutions, Inc.	Utah
Whitaker Physicians Services, L.L.C.	Texas	Whitaker Physicians Services

Entity Name	Jurisdiction of Formation	Doing Business As
EMX LP	New Jersey
Alpha Physician Resources, LLC	New Jersey	Alpha Physician Resources: ED Solutions
Bravo Reimbursement Specialists, LLC	New Jersey	Bravo Reimbursement Specialists
ED Solutions, LLC	New Jersey	N/A
EDIMS, LLC	New Jersey
Proven Healthcare Solutions of New Jersey, LLC	New Jersey	Proven Healthcare Solutions

QuickLinks

Exhibit 21.1

Subsidiaries of Envision Healthcare Holdings, Inc.