A Trustworthy Heart and Lung Surgery Center
About Us
Thank you for entrusting Mid-America Heart & Lung Surgeons with your cardiac, thoracic or vascular care. Diagnosis and treatment of heart and lung disease is our specialty. We are here to help you recover and resume your life as quickly as possible.
Located in Kansas City, MO, you will find our team to be among the most effective, accomplished and respected heart, lung and vascular surgeons in the United States. We pioneered the heart transplant procedure in the Midwest more than 35 years ago. Today, we are still at the leading edge of research, clinical trials and advanced procedures for our patients.
As leaders in the field of cardiac, thoracic and vascular care, we understand your concerns and worries. We look forward to helping you through this challenging time and to regaining a meaningful and productive life.
Meet Our Physicians & Staff


Jessica Heimes
Kansas City University of Medicine and Biosciences (2005)
General Surgery Residency
University of Kansas Medical Center, Kansas City, KS (2009)
Cardiothoracic Surgery Fellowship
Loma Linda University Medical Center, Loma Linda, CA (2014)
Board Certifications
American Board of Surgery, General Surgery
American Board of Thoracic Surgery

John R. Davis
St. George's Univ. School of Medicine, Grenada, West Indies (1996)
General Surgery Residency
Memorial Medical Center, Savannah, GA(2001)
Cardiothoracic Fellowship
St. Luke's Hospital, Kansas City, MO (2003)
Board Certifications
American Board of Surgery
American Board of Thoracic Surgery

Karthik Vamanan
Armed Forces Medical College, Pune, India (1996)
General Surgery Residency
General Surgery Montefiore Medical Center, AECOM, Bronx, NY (2001)
General Surgery Mt. Sinai Medical Center, Chicago Medical School, Chicago, IL (2004)
Vascular Fellowship
Hartford Hospital, University of Connecticut, Hartford, CT (2006)
Board Certifications
American Board of Surgery, General Surgery
American Board of Surgery, Vascular Surgery

Keith B. Allen
University of Kansas School of Medicine, Kansas City, KS Doctor of Medicine (1986)
Residency
General Surgery , Emory University Affiliated Hospitals, Atlanta, GA (1991)
Alfred A. Davis Fellow of Surgical Anatomy and Technique, Emory University School of Medicine, Atlanta, GA (1991)
Vascular Surgery, Rush-Presbyterian-St. Luke's Medical Center, Chicago, IL (1992)
Fellowship
Cardiothoracic Surgery Resident, Rush-Presbyterian-St. Luke's Medical Center, Chicago, IL (1994)
Certifications
Am Board of Surgery (1992) (2001)
Am Board of General Vascular Surgery (1995), (2005)
Am Board of Thoracic Surgery (1995) (2004)

Michael Gibson
Louisiana State University, School of Medicine
General Surgery Residency
Department of Surgery; Louisiana State University Health Science, Shreveport, LA
Cardiothoracic Fellowship
Oklahoma University Health Science Center, Oklahoma City, OK
Board Cerfifications
American Board of Surgery
General Surgery
American Board of Thoracic Surgery

Samantha Alsop
University of Kansas School of Medicine (2011)
General Surgery Residency
University of Kansas School of Medicine (2016)
Vascular Fellowship
University of Iowa Hospital and Clinics (2018)
Board Certifications
American Board of Surgery, General Surgery
Board Eligible American Board of Surgery, Vascular

Graham R.Y. Pollock
University of Missouri-Kansas City School of Medicine
General Surgery Residency
University of Missouri-Kansas City School of Medicine
Cardiothoracic Surgery Fellowship
Texas Heart Institute/Baylor College of Medicine
Board Certifications
American Board of Thoracic Surgery

Corinne Aberle
University of Missouri-Kansas City School of Medicine, Kansas City, Missouri
Residency
General Surgery Residency, University of Illinois Metropolitan Group Hospitals, Chicago, Illinois
Fellowship
Cardiothoracic Surgery, Texas Heart Institute at Baylor St. Luke's Medical Center, Houston, Texas
Board Certifications
Surgery, American Board of Surgery
Thoracic and Cardiac Surgery
American Board of Thoracic Surgery
Clinic Interests
Minimally invasive cardiac surgery, valvular heart disease, mitral valve surgery, aortic valve surgery, CABG, coronary artery disease, aortic aneurysm, mitral regurgitation and stenosis, aortic regurgitation and stenosis, tricuspid regurgitation, tricuspid valve surgery
Staff
Our practice utilizes Physician Assistants and Advance Practice Nurses
There may be times when a physician is not available and we schedule you to see a nurse practitioner or a physician assistant. You have the right to see a physician. Please let us know and we will be happy to reschedule your appointment.

Our Physician Assistants are:
- Alyson L. Clark, PA-C
- Paul Jenkins, PA-C
- Patrick Egger, PA-C
- Meredith Annin, PA-C
- Mark Mann, PA-C
- Morgan Walker, PA-C
- Lauren Ori, PA-C
- Courtney Eklund, PA-C
- Chelsea Light, PA-C
- Adam Weaver, PA-C

Our Nurse Practitioners are:
- Anna Mandacina, ARNP-BC
- Sarah Murphy, ARNP-BC
- Alyson Spiek, ARNP-BC
- Laura Langmack, ARNP-BC
- Maggie Affolter, ARNP-BC
- Justine Richard, ARNP-BC
- Briana McKiddy, ARNP-BC
- Laura Stockamp, ARNP-BC
- Dianna Williams, ARNP-BC
- Mary Cummings, ARNP-BC
- Julie Jennings, ARNP-BC
- Kristen Kumar, ARNP-BC
- Rachel Zimmerman, ARNP-BC