Photo of Tomas Heimann

Tomas Heimann

  • PROFESSOR Surgery
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  • American Board of Surgery


  • MD, S.U.N.Y. Syracuse

  • Residency, Surgery
    Mount Sinai Hospital


    Dr. Heimann graduated in the top 10% of his class at Upstate Medical Center in Syracuse and was  elected to the Alpha Omega Alpha Honor Medical Society. He  came to  Mount Sinai as a surgical intern and after completing his surgical residency rose through the ranks to become a Professor of Surgery. He is a member of numerous surgical and gastroenterological associations and has been recognized as best surgeon in gastrointestinal surgery both in New York and nationally. He has over 100 scientific publications, has authored 2 books and several chapters in Surgical Textbooks. He also has numerous presentations at national and international scientific societies. He is an Attending Surgeon at The Mount Sinai Medical Center and the Chief of Surgery at the James J. Peters VA Medical Center in the Bronx, a major affiliate of the Mount Sinai School of Medicine. Although Dr. Heimann is on the Colorectal  Surgery service and is an expert in the surgical treatment of patients with inflammatory Bowel Disease, he is also the New York State Chair for the Commission on Cancer and performs major cancer operations both at Mount Sinai and at the James J. Peters VA Medical Center. Dr Heimann also has extensive experience in the surgical treatment of large abdominal wall hernias requiring extensive reconstruction.  He was born in Hungary and grew up in South America. He speaks fluent Spanish and Hungarian.


  • 1999, 2000 -
    Mount Sinai Hospital Physician of the Year Nominee
    The Mount Sinai Hospital Operating Room Staff, Department of Nursing

  • 1991 -
    Best Doctors in New York
    New York Magazine

  • 1990, 1991 -
    First Prize
    New York Society of Colon and Rectal Surgeons

  • 1978, 1979 -
    Ralph Colp Award
    Mount Sinai School of Medicine

  • 1976 -
    Surgeons Award
    Society of Veterans Administration

  • 1970 -
    Alpha Omega Alpha
    Honor Medical Society


  • Crohn's disease
  • Ulcerative colitis
  • Rectal cancer
  • Esophageal cancer
  • Pancreatic cancer


Slater G, Heimann T. Colectomy and ileoanal-pouch anastomosis for ulcerative colitis. Surg Rounds 1993; 16: 733-739.

Heimann T, Greenstein AJ, Lewis B, Kaufman D, Heimann DM, Aufses Jr AH. Prediction of early symptomatic recurrence following intestinal resection in Crohn's disease. Ann Surg 1993; 218: 294-299.

Heimann TM. Recent Progress in the Diagnosis and Treatment of Familial Adenomatous Polyposis. Current Surgery 1996 March/April; 53(3): 134-136.

Ribeiro MB, Greenstein AJ, Sachar DB, Barth J, Balasubramanian S, Harpaz N, Heimann TM, Aufses Jr AH. Colorectal Adenocarcinoma in Crohn's Disease. Ann Surg 1996; 223: 186-193.

Aisenberg J, Wagreich J, Shim J, Almer S, Peen E, Heimann T, Gelernt IM, Greenstein A, Rubin P, Harpaz N, Mayer L, Sachar D. Pernuclear Anti-neutrophil Cytoplasmic Antibody and Refractory Pouchitis (A Case Control Study). Digestive Diseases and Sciences 1996; 9: 1866-1872.

Jang Y, Steinhagen R, Heimann T. Colorectal Cancer in Familial Adenomatous Polyposis. Dis Colon & Rectum 1997; 40: 312-316.

Heimann TM, Greenstein AJ, Lewis B, Kaufman D, Heimann DM, Aufses Jr AH. Comparison of Primary and Reoperative Surgery in Patients with Crohn's Disease. Ann Surg 1998; 227: 492-495.

Kurtz RJ, Heimann TM. Comparison of Open and Laparoscopic Treatment of Acute Appendicitis. Am J Surg 2001; 182: 211-214.

Reis ED, Vine AJ, Heimann TM. Radiation Damage to the Rectum and Anus: Pathophysiology, Clinical Features, and Surgical Implications. Colorectal Disease 2002; 4: 2-12.

Fichera A, Cicchiello LA, Mendelson DS, Greenstein AJ, Heimann T. Superior Mesenteric Vein Thrombosis after Colectomy for Inflammatory Bowel Disease: A Not Uncommon Cause of Postoperative Acute Abdominal Pain. Dis Colon Rectum 2003; 46: 643-648.

Industry Relationships

Physicians and scientists on the faculty of the Icahn School of Medicine at Mount Sinai often interact with pharmaceutical, device and biotechnology companies to improve patient care, develop new therapies and achieve scientific breakthroughs. In order to promote an ethical and transparent environment for conducting research, providing clinical care and teaching, Mount Sinai requires that salaried faculty inform the School of their relationships with such companies.

Dr. Heimann did not report having any of the following types of financial relationships with industry during 2015 and/or 2016: consulting, scientific advisory board, industry-sponsored lectures, service on Board of Directors, participation on industry-sponsored committees, equity ownership valued at greater than 5% of a publicly traded company or any value in a privately held company. Please note that this information may differ from information posted on corporate sites due to timing or classification differences.

Mount Sinai's faculty policies relating to faculty collaboration with industry are posted on our website. Patients may wish to ask their physician about the activities they perform for companies.

Insurance Information

Physicians who provide services at hospitals and facilities in the Mount Sinai Health System might not participate in the same health plans as those Mount Sinai hospitals and facilities (even if the physicians are employed or contracted by those hospitals or facilities).

Information regarding insurance participation and billing by this physician may be found on this page, and can also be obtained by contacting this provider directly. Because physicians insurance participation can change, the insurance information on this page may not always be up-to-date. Please contact this physician directly to obtain the most up-to-date insurance information.

Insurance and health plan networks that the various Mount Sinai Health System hospitals and facilities participate in can be found on the Mount Sinai Health System website.

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Surgical Associates

5 East 98th Street
14th Floor, Suite D, Box 1259
New York, NY 10029

Tel: 212-241-9281
Fax: 212-534-2654
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Office Hours:
  • Tuesday 2:00pm - 5:00pm
  • Hungarian
  • Spanish
Insurance Plans
  • 1199 National Benefit Fund
  • 32B-J Building Service
  • Aetna
  • Blue Choice
  • CIGNA - Indemnity
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  • Empire Blue Cross/Blue Shield - PPO
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  • Medicaid of New York
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  • Medicare Assignment
  • Medicare of NY
  • Other
  • Oxford HMO/PPO
  • Oxford Health Plans
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  • Private Healthcare Systems (PHCS)
  • Railroad Medicare
  • United Healthcare
  • United Healthcare Commercial
  • United Healthcare Medicare
  • UnitedHealthcare Community Plan
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  • American Express
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