His expertise spans all types of chemotherapy, intensive protocols, immunotherapy, hormonal therapy in addition to dealing with oncological emergencies, including medical care of patients. He also has a deep interest in breast cancer, lung cancer, gastro-intestinal cancer and lymphoma/leukemia/myeloma. In addition, has been effectively involved in organizing different workshops seminars and conferences all over the country and showing his active presence among best Cancer doctors in Delhi NCR .

In addition to his MBBS, MD and DM degrees, Dr. Manish Singhal has had further specialised training for a month in 2009 in haematopoietic stem cell transplant at the Barbara Ann Karmanos Cancer Institute, Detroit, where he studied bone marrow transplant practices with world experts such as Prof. Joseph Ubertti and Dr. Voravit Ratanatharathorn. He also underwent a randomised controlled clinical trial course conducted by Oxford University (UK) in September 2009 where he learned from leading authorities the intricacies of planning and conducting trials methodically, and the essence of establishing scientific evidence for treatment and well-being of patients. Earlier, in 2003, Dr. Singhal was the proud recipient of the Best Exam Award given by the European Society of Medical Oncology for scoring highest marks globally.

Dr. Singhal is currently the Consultant and Head of Department of Medical Oncology at the Fortis International Oncology Centre (IOSPL) in Noida, where he has been working in various capacities since December 2010 and recognized as a best oncologist in Noida, Delhi-NCR and in entire India. His regular work here entails conventional and high-dose chemotherapy for both solid and haematological malignancies, and involves developing world-class clinical protocols and ensuring implementation of care pathways across all centres. He has also been actively involved with pharmaceutical companies for clinical research/trials, and has worked in the capacity of an advisory consultant for new research molecules and drugs. In addition, he has been instrumental in establishing International Oncology Cancer Centres in Tier 2 cities (such as Panipat) in an endeavor to provide world-class cancer treatment and facilities to underserved areas.

Dr. Singhal has spearheaded programme content for various CME programmes and focus-group discussions with doctors, besides acting as a catalyst for various support-group activities such as Survivors Meet, counseling cancer patients and their families. He has actively participated in various health programmes such as health camps, lectures and diagnostic camps at various corporates, institutes, colleges and RWA community centres. In addition, due his great presence among best cancer doctors in India, he has been invited to many cancer awareness talk shows on television and radio, as well as several national conferences to share his professional knowledge. He has authored articles for leading newspapers and magazines. His ongoing objective is to reach out to underdeveloped areas of the country to spread awareness about cancer and its treatment. He also wishes to carry out translational research in the direction of personalised treatment of cancer.