The following is a representative list of ZHealth and Ingram Associates customers that have engaged Dr. Zielske to provide interventional radiology and cardiology coding services:

Advocate Health Care, Chicago, IL
Altoona Hospital, Altoona, PA
Atlantic Health System, New Jersey
Bakersfield Memorial Hospital, Bakersfield, CA
Banner Health, Phoenix, AZ
Baptist Hospital East, Louisville, KY
Baptist Hospital, Pensacola, FL
Baylor Health Care System, Dallas, TX
Benedictine Hospital, Kingston, New York
Berkshire Health Systems, Pittsfield, MA
Bethesda Memorial Hospital, Boynton Beach, FL
California Hospital Medical Center, Los Angeles, CA
Catawba Valley Medical Center, Hickory, NC
Catholic Healthcare West, San Francisco, CA
California Pacific Medical Center, San Francisco, CA 
Chandler Regional Medical Center, Phoenix, AZ
CHP Lorain, Lorain, OH
Christus Spohn Hospital Shoreline, Corpus Christi, TX   
Christus Spohn Memorial Hospital, Corpus Christi, TX
Citrus Memorial Hospital, Inverness, FL
The Cleveland Clinic, Cleveland, OH
Community Hospital of San Bernardino, San Bernardino, CA
Community Hospital of Indiana, Indianapolis, IN  
Covenant Medical Center, Lubbock, TX
Deaconess Medical Center, Spokane, WA
Del E. Webb Memorial Hospital, Sun City West, AZ
Desert Samaritan Hospital, Mesa, AZ
Dominican Hospital, Santa Cruz, CA
Eden Medical Center, Castro Valley, CA
Elmhurst Memorial Healthcare, Elmhurst, IL
Fairfield Medical Center, Lancaster, OH
Gadsden Regional Medical Center, Gadsden, AL
Glendale Memorial Hospital & Health Center, Glendale, CA
Hackensack University Medical Center, Hackensack, NJ
Halifax Medical Center, Daytona Beach, FL
Henry Ford Hospital, Detroit, MI
Jackson-Madison County General Hospital, Jackson, TN
Kettering Medical Center, Kettering, OH
Lakeland Regional Medical Center, Lakeland, FL
Lancaster General Hospital, Lancaster, PA
Lee Memorial Health Systems, Fort Myers, FL
Lima Memorial Hospital, Lima, OH
Lourdes Hospital, Paducah, KY
Lutheran Heart Hospital, Mesa, AZ
Lutheran Hospital of Indiana, Fort Wayne, IN
Main Line Health System, Philadelphia, PA
Marian Medical Center, Santa Maria, CA
Marion General Hospital, Marion, Ohio
Martin Memorial Health Systems, Stuart, FL
Memorial Hermann Katy Hospital, Katy, TX
Memorial Hermann Northwest Hospital, Houston, TX
Memorial Hermann Hospital Southeast, Houston, TX
Memorial Hermann Southwest Hospital, Houston, TX
Memorial Hospital of Pembroke, Hollywood, FL
Memorial Hospital West, Hollywood, FL
Memorial Regional Hospital, Hollywood, FL
Mercy Hospital and Medical Center, Chicago, IL
Mercy Hospital, Merced, CA
Mercy Iowa City, Iowa City, IA
Mercy Medical Center, Bakersfield, CA
Mercy Medical Center Redding, Redding, CA
Meridian Health System, New Jersey
The Methodist Hospital, Houston, TX
Mission St. Joseph's Health System, Ashville, NC
Mobile Infirmary Medical Center, Mobile, AL
Mount Carmel Health, Columbus, Ohio
Nebraska Methodist Hospital, Omaha, NE
North Colorado Medical Center, Greeley, CO
North Monroe Hospital, Monroe, LA
Northridge Medical Center, Los Angeles, CA
The Ohio State University Medical Center, Columbus, Ohio
Orange Regional Medical Center, Middletown, NY
OSF Healthcare, Illinois
Premier Health Partners, Dayton, OH
ProMedica Health System, Ohio
Provena Saint Joseph Medical Center, Joliet, IL
Providence Medical Center, Kansas City, MO
Queen of the Valley Hospital, Napa, CA
Rapides Regional Medical Center, Alexandria, LA
Regional Medical Center of NEA, Jonesboro, AK
Sentara Healthcare, Norfolk, VA
St. Anthony Medical Center, Rockford, IL
St. Bernardine Medical Center, San Bernadino, CA
St. Dominic-Jackson Memorial Hospital, Jackson, MS
St. Francis Health Center, Topeka, KS
St. Francis Hospital, Memphis, TN
St. John’s Regional Medical Center, Oxnard, CA
Saint John’s Health System, Anderson, IN
Saint Joseph Mercy Health System, Ann Arbor, MI
Saint Joseph Health Center, Kansas City, MO
St. Joseph’s Hospital and Medical Center, Phoenix, AZ
St. Jude Medical Center, Fullerton, CA
St. Luke’s Hospital, Cedar Rapids, IA
St. Luke's Medical Center, Maumee, OH
St. Mary’s Health Care Services, Evansville, IN
St. Mary’s Hospital & Medical Center, Grand Junction, CO
St. Joseph Health System, Eureka, CA
St. Joseph Hospital, Orange, CA
St. Mary Medical Center, Long Beach, CA
St. Mary Mercy Hospital, Livonia, MI
St. Patrick Health & Science Center, Missoula, MT
St. Rita's Medical Center, Lima, OH
St. Rose Dominican Hospital, Henderson, NV
St. Rose Dominican Hospital Siena Campus, Henderson, NV
St. Vincent Healthcare, Billings, MT
St. Vincent Hospitals & Health Services, Indianapolis, IN
St. Vincent’s, Jacksonville, FL
St. Vincent Medical Center, Los Angeles, CA
San Gabriel Valley Medical Center, San Gabriel, CA
Santa Rosa Memorial Hospital, Santa Rosa, CA
Sequoia Hospital, Redwood City, CA
Sharp Healthcare, San Diego, CA
Sharp Chula Vista Medical Center, Chula Vista, CA
Sharp Grossmont Hospital, La Mesa, CA
Sharp Memorial Hospital, San Diego, CA
Sisters of Charity of Leavenworth Health System, Lenexa, KS
Summa Health System, Akron, OH
Sutter Health, Sacramento, CA
Sutter Medical Center, Sacramento, CA
Tampa General Hospital, Tampa, FL
Tenet Healthcare Corporation, Dallas, TX
Thunderbird Samaritan Medical Center, Glendale, AZ
Trinity Health, Novi, MI
United Health Services, Binghamton, NY
United Hospital Center, Clarksburg, WV
University of Alabama Hospital, Birmingham, AL
University of Louisville Healthcare, Louisville, KY
University of Mississippi Medical Center, Jackson, MS
University of Tennessee Medical Center, Knoxville, TN
Valley Health System, Ridgewood, NJ
WakeMed, Raleigh, NC
Walter O. Boswell Memorial Hospital, Sun City, AZ
West Virginia University Hospitals, Morgantown, WV