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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

Entity Name
  Jurisdiction of
Formation
  Doing Business As

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

      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

Entity Name
  Jurisdiction of
Formation
  Doing Business As

Ambulance Acquisition, Inc. 

  Delaware   N/A

Metro Ambulance Services, Inc. 

  Georgia   N/A

Broward Ambulance, Inc. 

  Delaware   American Medical Response

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)

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   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

Entity Name
  Jurisdiction of
Formation
  Doing Business As

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

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

MedAssociates, LLC

  Texas   N/A

American Medical Response of Maricopa, LLC

  Delaware   N/A

American Medical Response of Pima, LLC

  Delaware   N/A

MedStat EMS, Inc. 

  Mississippi   N/A

Streamlined Medical Solutions LLC

  Texas   N/A

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 Medicine of Broward, LLC

  Florida   N/A

Phoenix Emergency Physicians of the Midwest, LLC

  Florida   N/A

Entity Name
  Jurisdiction of
Formation
  Doing Business As

Phoenix Emergency Physicians of the Northeast, LLC

  Florida   N/A

Phoenix Emergency Physicians 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



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Subsidiaries of Envision Healthcare Holdings, Inc.