1. Head, Department of General Surgery since April 2013.
2. Executive council Member (East Zone) of Association of Minimal Access Surgeon of India (2024-26).
3. Executive council Member (East Zone) of Hernia Society of India 2023-25.
4. Executive council Member (East Zone) of AWR (Abdominal Wall Reconstruction) of India 2023-25.
5. Executive council Member of Association of Surgeons of India (Bihar Chapter): 2021-24.
6. Examiner of Under graduate & Postgraduate final professional at various AIIMS and other medical universities
7. Examiner of Post graduate DNB General Surgery examination and FNB Minimal Access Surgery at various centers of National Boards.Peer reviewer in many online journals
8. Presented paper in various national and international conferences
9. Published more than 60 papers in indexed journals with H index -14 and i10 index -16 in google scholar. Engaged in independent and collaborative research projects.

1. Kumar M, Kumar A, Parshad R, Sharma R and Chattopadhyay TK. Relative merits of ultrasound, CT scan and Cholangiography in patients of surgical obstructive jaundice. Hepato Gastoenterol 1998; 45:2027-2032. 2. Kumar M. Management of cholangitis: A review. Hospital Today 1999; Vol 4, No. 8:398 -403 3. Parshad R, Kumar M. Sentinel node biopsy in Breast Cancer: J and K Science, 2000, Vol 2, No. 1, 6-12. 4. Kumar M. Deb M, Parshad R. Abdominal Cocoon: Report of a case. Surgery Today 2000; 30:950-953. 5. Kumar M., Parshad R. Pseudo cyst of Adrenal gland: A case report and review of literature. Med J. Malaysia 2002; 57 (1): 125-127. 6. Kumar M. Govil D. Short gut syndrome. Gastroenterology today: 2002; 6 (1): 17-22. 7. Kumar M., Afaq. A, Gupta A.K., Agrawal C. S. Spontaneous rupture of choledochal cyst in a child. Journal of Society of Surgeons of Nepal, 2005:8:40-42 8. Agrawal CS, Pratap A, Gupta AK, Kumar M. Bhandari B, Dahal G, Tiwary A, Sundas A. Short-term results of combined perineal and abdominal transpubic urethroplasty for long segment posterior urethral disruption. Internal Journal of Urology. 11 (Supplement 1): A16 October 2004. 9. Agrawal CS, Adhikary SC, Kumar M. Role of C-reactive protein in the diagnosis of acute appendicitis: a randomized clinical study from eastern Nepal. Sent for publication in Nepal medical journal. 10. Surgical Skills laboratories: Their role in surgical training programs. Kaur N., Agrawal C. S., Kumar M., Chauhan APS. Journal of Society of Surgeons of Nepal, 2005:8(4),3-7. 11. Kumar M, Sharma U, Gupta A K, Agrawal C S. Atypical presentation of Boerhaave's Syndrome: a case report and review of literature. Journal of Society of Surgeons of Nepal, 2005:9(1):32-35. 12. Akshay Pratap, Tiwary A Agrawal C S, Kaur N, Kumar M. Shrestha P. Gastric outlet obstruction: an unusual complication of Umbilical vein catheterization. J Pediatr Gastroenterol Nutr, 2006; 43 (1):113-115. 13. Agrawal A Singh GK, Kumar A, Kumar M, Ghimire A. Orthopaedic injuries, chest injuries and associated head trauma: A difficult scenario. Orthopedics today, 2006: Vol. VIII; no.3:146-150. 14. Kumar B, Kumar M, Sen R, Anchal N. Mature solid teratoma, rectum: A case report and review of literature. Accepted for publication in Surgery Today(Journal of Japanese surgical society). 15. Kumar M, Agrawal CS, Gupta RK. Three port versus standard four port Laparoscopic cholecystectomy: a randomized controlled clinical trial in a community based teaching hospital of Eastern Nepal. Journal of Society of Laparoscopic Surgery; 2007; 11(3): 358-362 16. Kumar M, Kaur N, Kumar S, Keyal NK Agrawal CS. Breast cancer in Eastern Nepal: A hospital based retrospective study. Journal of society of Surgeons of Nepal 2006; 9(3):12-16. 17. Agrawal A, Timothy J, Kumar M. Low grade gliomas: current concepts and controversies. Nepal journal of Neuroscience 2006; 3:19-27. 18. Agrawal A., Kumar A, Sinha A, Kumar M, Pandey SR, Khaniya S. Intracranial metastases from carcinoma of the cervix: Singapore medical J.2007; May48:(5)e186-9 19. Hasan A, Sinha L, Singh PK, Kumar S, Kumar M. Seminoma in Undescended teste: A case report. International J of Science & Research, 2016, vol 5(12):872-74 20. Agrawal A, Agrawal CS, Kumar A, Kumar M, Yadav R. Spontaneous acute subdural hemorrhage, cerebral and pulmonary metastases in a known case of complete mole. Singapore medical J. 2007 July; 47:(7):e186-9 21. Ghimire A, Bhattarai M, Kumar M, Wakode PT. Descending necrotizing mediastinitis: A fatal complication of neglected mediastinitis. Accepted for publication in Kathmandu university medical journal. 22. Kumar P, Kumar M, Ranjan N. Papillary adenocarcinoma of the third part of the duodenum: A case report. Saudi Surg J 2017; (5):134-5. Open Access Journal of Surgery 4(3) 23. Sinha L¹, Hasan A ^ 2 Singh A * K ^ 3 Bhadani P * P ^ 4 Jha A * N ^ 6 Singh P * K ^ 6 Kumar M ^ 7 Inflammatory myofibroblastic tumor involving liver, gallbladder, pylorus & duodenum: A rare case presentation.: A rare case presentation. International journal of Surgery Case report 2017(31) 27-29 24. Kumar P, Kumar M, Hasan Arshad, Singh V. Isolated hydatid cyst of spleen: A rare case with rare presentation. International journal of Surgery Case report 2016(28) 279-81 25. Saxena AK, Gupta RK, Kumar A. Kumar M. ARMS-PCR Based SNP Analysis of MTHFR C677T Allele Using Syber Green in pancreatic Tumour. British Journal of Medicine & Medical Research. 11(12)1-6,2016 26. Iliopsoas abscess: analysis and perspectives from an endemic region of Eastern Nepal. RP Yadav, CS Agrawal, S Adhikary, M Kumar, R Regmi, R Amatya,.... 27. R Parshad, MV Kumar, S Bal, A Saraya, MP Sharma. Laparoscopic Nissen fundoplication; results of a prospective pilot study. Tropical gastroenterology: official journal of the Digestive Diseases... 28. Ajit Kr Saxena, CS Agrawal, Manoj Kumar, AK Srivastava. Spontaneous unusual expression of frequency of chromosome aberrations and common fragile in human lymphocytes of Colorectal cancer patients induced by Aphidicolin. GS Journal of Experimental Therapeutics and Oncology 6, 175-179 29. Metaplastic carcinoma of the breast-Case report and review of literature M Kumar, JS Nigam, P Khanna, A Arora. International Journal of Surgery Open 24, 43-46 30. A Kumar, M Kumar, AK Jha, B Kumar, R Kumari. The Easiest Way to Insert Ksharsutra with the help of an Infant Feeding Tube Instead of a Metallic Probe Indian Journal of Surgery 79(4), 371-373 31. A. Arora, AK Jha, M Kumar. Letter to the Editor: Standard of Care and Outcomes of Primary Laparotomy Versus Laparotomy in Patients with Prior Open Abdominal surgery (ReLap Study; DRKS00013001). Journal of Gastrointestinal Surgery 25(5), 1350-1351 32. R Gupta, AK Jha, M Kumar, S Vikram, M Kumar. Letter to editor concerning article titled "The negative pressure wound therapy may salvage the infected mesh following open incisional hernia repair" Annals of Medicine and Surgery 64 33. R Shekhar, M Narayan, A Kumar, M Kumar Comparing the outcome of laparoscopic (TAPP mesh repair) and open hernia repair. International Journal of Health sand clinical Research 3 (12(S), 108-112 34. M Kumar, PK Singh, CK Jha. Excision of Benign Breast Lumps: Lessons Learnt. Journal of the American college of Surgeons 231(4), e84 35. Ulcerated juvenile giant Fibroadenoma: PK Singh, M Kumar, F Rehman, CK Jha, V. Rathod Sri Lanka Journal of Surgery 37(3) 36. Manoj Kumar, Chandrakant Kumar, Manoj Kumar. Marjolin's Ulcer: Current perspective and review Trends in Micro-vascular Reconstruction (BJAPSCON 2019) 9, 95-100 37. Laxmi Sinha, Manoj Kumar. Arrow injury in the neck: A case of presentation International Journal of Sciences and Research 6 (9), 1178-1180 38. Pritanjali Singh Manoj Kumar, Subhash Kumar. Percutaneous trans- hepatic biliary drainage in malignant biliary obstruction: complications and outcome. European Journal of Cancer, P_262_21wcgic 39. M Kumar. Laparoscopic Pancreatic Surgery: Current status Progress in minimal invasive surgery (APSCON), 31-37 40. M Kumar, MH Ali, BN Banerjee. A socio-economic analysis of income, consumption and poverty in Bihar- a case study. Journal of Interacademicia 14 (1), 112-120 41. Agrawal CS Kumar M. Tumor markers: current perspectives. Journal of Nepal Medical Association 3 (2), 85-89 42. Subhash Kumar, Pritanjali Singh, Vinod Kumar, Manoj Kumar, Mala Mahto. Survival benefit of trans-hepatic biliary drainage for malignant biliary tract obstruction- a prospective study comparing external and internal drainage technique Abdominal radiology (2021) 43. Utpal Anand, Ramesh Kumar, Rajeev. Mayan Priyadarshi, Manoj Kumar, Analysis of outcomes of biliary reconstruction after post-cholecystectomy bile duct injuries. Rakesh Kumar, Nehal Ahmad, Aaron George John, Kunal Parasar, and Bindey Kumar @2021 ANZ J of Surgery 44. Manoj Kumar, Ashesh Kumar Jha, Abhishek Arora, P. P. Sreepriya. Comparative analysis of Onlay and sublay (retrorectus) mesh repair for incisional hernia (width ≤10 cm) of abdominal wall: A single-center experience. Formosan Journal of Surgery. 2022; 55(1):