{"schema_version":"bookimed.page-context.v1","id":"surgeon-bookimed-5175","url":"https://hub.bookimed.com/bariatric-surgery/surgeon-bookimed-5175/","json_url":"https://hub.bookimed.com/bariatric-surgery/surgeon-bookimed-5175/#page-context","content_revision":"bariatric-registry-v1","date_modified":"2026-10-21","language":"en","kind":"doctor-profile","title":"Halil Alis: bariatric surgeon profile","summary":"Halil Alis is a colorectal surgeon at Valued Med Hub Hospitals in Istanbul, Turkey. The bariatric procedures associated with Halil Alis include gastric banding, gastric bypass and sleeve gastrectomy. Publications linked to Halil Alis cover weight-loss patterns after laparoscopic sleeve gastrectomy by age and preoperative weight (2025); body composition before and one year after laparoscopic sleeve gastrectomy (2026); two approaches to abdominal wall nerve blocks for pain relief in sleeve gastrectomy (2026). These publication topics do not establish personal surgical results or who performed the operations. To ask about bariatric care with Halil Alis, use the [Bookimed inquiry page for Halil Alis](https://us-uk.bookimed.com/doctor/halil-alis-valued-med/).","research_credit":{"name":"Yevhenii Kozlov","role":"Co-Founder of Bookimed","url":"https://us-uk.bookimed.com/ceo/kozlov/","contribution":"Research project led","assistance":"For me, helping patients find the best medical care is a personal responsibility. This guide is built by a process we designed to do the hard part — reading the research, comparing surgeons and clinics, checking real offers — and to make the result simple and clear for every patient. AI tools do much of the work; every fact links to its source."},"editorial_scope":"Migration of supplied source-linked content. No new clinical review is claimed.","research_method":"How this guide is researched and compared Research project led by Yevhenii Kozlov .","sections":[{"id":"narrative-orientation","title":"About Halil Alis","text":"About Halil Alis Halil Alis is a colorectal surgeon at Valued Med Hub Hospitals in Istanbul, Turkey. The bariatric procedures associated with Halil Alis include gastric banding, gastric bypass and sleeve gastrectomy. Publications linked to Halil Alis cover weight-loss patterns after laparoscopic sleeve gastrectomy by age and preoperative weight (2025); body composition before and one year after laparoscopic sleeve gastrectomy (2026); two approaches to abdominal wall nerve blocks for pain relief in sleeve gastrectomy (2026). These publication topics do not establish personal surgical results or who performed the operations. To ask about bariatric care with Halil Alis, use the Bookimed inquiry page for Halil Alis . Sources (1) Halil Alis","links":[{"label":"Bookimed inquiry page for Halil Alis","url":"https://us-uk.bookimed.com/doctor/halil-alis-valued-med/"},{"label":"Halil Alis","url":"https://us-uk.bookimed.com/doctor/halil-alis-valued-med/"}]},{"id":"profile-data-clinic","title":"Clinic and location","text":"Clinic and location Halil Alis · Valued Med Hub Hospitals · Istanbul, Turkey Bookimed doctor profile Sources (1) Halil Alis","links":[{"label":"","url":"https://hub.bookimed.com/bariatric-surgery/surgeon-bookimed-5175/"},{"label":"Halil Alis","url":"https://hub.bookimed.com/bariatric-surgery/surgeon-bookimed-5175/"},{"label":"","url":"https://hub.bookimed.com/bariatric-surgery/clinic-3418/"},{"label":"Valued Med Hub Hospitals","url":"https://hub.bookimed.com/bariatric-surgery/clinic-3418/"},{"label":"Bookimed doctor profile","url":"https://us-uk.bookimed.com/doctor/halil-alis-valued-med/"},{"label":"Halil Alis","url":"https://us-uk.bookimed.com/doctor/halil-alis-valued-med/"}]},{"id":"profile-data-operations","title":"Operations and published practice","text":"Operations and published practice Band Bypass Sleeve Published practice information Halil Alış Liv Hospital Topkapı General Surgery Source for this statement practice Areas of Interests Laparoscopic surgery Robotic surgery Obesity surgery Supporting source operations on named doctor page He treats obesity through techniques like gastric bypass and sleeve gastrectomy. Supporting source university identity link 2017- Professor of General Surgery - Istanbul Aydın University Health Application and Research Center Supporting source Sources (2) www.livhospital.com — source Halil Alis","links":[{"label":"Source for this statement","url":"https://www.livhospital.com/en/prof-md-halil-alis"},{"label":"Supporting source","url":"https://www.livhospital.com/en/prof-md-halil-alis"},{"label":"Supporting source","url":"https://us-uk.bookimed.com/doctor/halil-alis-valued-med/"},{"label":"Supporting source","url":"https://www.livhospital.com/en/prof-md-halil-alis"},{"label":"www.livhospital.com — source","url":"https://www.livhospital.com/en/prof-md-halil-alis"},{"label":"Halil Alis","url":"https://us-uk.bookimed.com/doctor/halil-alis-valued-med/"}]},{"id":"profile-data-experience","title":"Reported experience","text":"Reported experience 34 years of experience. Biography source Sources (1) Halil Alis","links":[{"label":"Biography source","url":"https://us-uk.bookimed.com/doctor/halil-alis-valued-med/"},{"label":"Halil Alis","url":"https://us-uk.bookimed.com/doctor/halil-alis-valued-med/"}]},{"id":"profile-data-publications","title":"Publications","text":"Publications Weight loss dynamics after laparoscopic sleeve gastrectomy: a retrospective single center analysis with age and preoperative weight stratification. (2025). Publication Association Between Pre-Operative Fat Mass and Appendicular Lean Soft-Tissue Mass Before and One Year After Laparoscopic Sleeve Gastrectomy: A Sex-Stratified Body Composition Study. (2026). Publication Laparoscopic versus ultrasound-guided subcostal transversus abdominis plane block in sleeve gastrectomy: A randomised comparison of analgesic effectiveness and procedural feasibility. (2026). Publication Sources (3) Weight loss dynamics after laparoscopic sleeve gastrectomy: a retrospective single center analysis with age and preoperative weight stratification. Association Between Pre-Operative Fat Mass and Appendicular Lean Soft-Tissue Mass Before and One Year After Laparoscopic Sleeve Gastrectomy: A Sex-Stratified Body Composition Study. Laparoscopic versus ultrasound-guided subcostal transversus abdominis plane block in sleeve gastrectomy: A randomised comparison of analgesic effectiveness and procedural feasibility.","links":[{"label":"Publication","url":"https://pubmed.ncbi.nlm.nih.gov/40082531/"},{"label":"Publication","url":"https://pubmed.ncbi.nlm.nih.gov/42651057/"},{"label":"Publication","url":"https://pubmed.ncbi.nlm.nih.gov/41821301/"},{"label":"Weight loss dynamics after laparoscopic sleeve gastrectomy: a retrospective single center analysis with age and preoperative weight stratification.","url":"https://pubmed.ncbi.nlm.nih.gov/40082531/"},{"label":"Association Between Pre-Operative Fat Mass and Appendicular Lean Soft-Tissue Mass Before and One Year After Laparoscopic Sleeve Gastrectomy: A Sex-Stratified Body Composition Study.","url":"https://pubmed.ncbi.nlm.nih.gov/42651057/"},{"label":"Laparoscopic versus ultrasound-guided subcostal transversus abdominis plane block in sleeve gastrectomy: A randomised comparison of analgesic effectiveness and procedural feasibility.","url":"https://pubmed.ncbi.nlm.nih.gov/41821301/"}]},{"id":"profile-data-booking","title":"Ask about treatment","text":"Ask about treatment Ask Bookimed about Halil Alis","links":[]},{"id":"profile-data-request-form","title":"Request a treatment proposal","text":"Request a treatment proposal What would you like help with? Answer a few questions on Bookimed, then add your contact details to request help. Privacy policy Open the Bookimed request form","links":[{"label":"Privacy policy","url":"https://us-uk.bookimed.com/page/privacy-policy/"}]}],"introduction":"Bariatric surgery guide / Halil Alis Surgeon profile Halil Alis: bariatric surgeon profile Halil Alis — Valued Med Hub Hospitals Research project led by Yevhenii Kozlov · Co-Founder of Bookimed Updated 21 October 2026 Sources linked throughout Portrait source ↗ Halil Alis Valued Med Hub Hospitals  → Istanbul · Turkey Profile on Bookimed","related_documents":[{"id":"bariatric-surgery","title":"Bariatric and metabolic surgery: compare your options","kind":"home","url":"https://hub.bookimed.com/bariatric-surgery/","json_url":"https://hub.bookimed.com/bariatric-surgery/page-contexts/bariatric-surgery.json"},{"id":"clinic-3418","title":"Valued Med Hub Hospitals: surgeons","kind":"clinic-profile","url":"https://hub.bookimed.com/bariatric-surgery/clinic-3418/","json_url":"https://hub.bookimed.com/bariatric-surgery/clinic-3418/#page-context"}],"entity":{"id":"doctor.halil-alis-valued-med","source_ids":["source.242488496f873f738b60","source.7925427f794573248d15","source.a2b51512f73a27df3a3b"],"name":"Halil Alis","bookimed_doctor_id":5175,"method_links":[{"clinical_method_id":"bariatric.sleeve","papers_count":8}],"selection_reason":"topic_research_first_or_last=9, topic_rank=329, last_topic_paper_year=2026 and example_pmids=40082531 support E2 (first/last-author original procedural cohort/series: Weight loss dynamics after laparoscopic sleeve gastrectomy: a retrospective single center analysis with age and preoperative weight stratification); bookimed_bookable=true.","research_fact_ids":["bariatric.numeric.35646.doctor.halil-alis-valued-med","bariatric.numeric.41442.doctor.halil-alis-valued-med","bariatric.numeric.41443.doctor.halil-alis-valued-med","bariatric.numeric.39391.doctor.halil-alis-valued-med"],"personal_surgical_volume":null,"personal_volume_status":"unknown","selected_publications":[{"study_id":"PMID:40082531","source_id":"pubmed.40082531","pmid":"40082531","title":"Weight loss dynamics after laparoscopic sleeve gastrectomy: a retrospective single center analysis with age and preoperative weight stratification.","year":2025,"publication_types":["Journal Article"],"library_type":"other","author_matches":[{"name":"Halil Alis","last_name":"Alis","given_name":"Halil","initials":"H","name_key":"alis halil","orcid":null,"position":8,"sole_author":false,"last_named_person":true,"roles":["last"],"affiliations":["Department of General Surgery, Faculty of Medicine, Istanbul Aydin University, Istanbul, Turkey."],"countries":["Turkey"]}],"body_path":"results/section_builder/bariatric/sources/PMID_40082531.abstract.txt","body_sha256":"f7a029cb1e64d6bb2c55c0c2580d9943b0b2ae9ddd384344cc3b00cc590f5091"},{"study_id":"PMID:42651057","source_id":"pubmed.42651057","pmid":"42651057","title":"Association Between Pre-Operative Fat Mass and Appendicular Lean Soft-Tissue Mass Before and One Year After Laparoscopic Sleeve Gastrectomy: A Sex-Stratified Body Composition Study.","year":2026,"publication_types":["Journal Article"],"library_type":"series","author_matches":[{"name":"Halil Alis","last_name":"Alis","given_name":"Halil","initials":"H","name_key":"alis halil","orcid":"0000-0003-0907-6047","position":6,"sole_author":false,"last_named_person":true,"roles":["last"],"affiliations":["Department of General Surgery, Faculty of Medicine, Istanbul Aydin University, Istanbul 34295, Türkiye."],"countries":["Turkey"]}],"body_path":"results/section_builder/bariatric/sources/PMID_42651057.abstract.txt","body_sha256":"8daa96fee0cdea1414e0ca2663b2310aa0ec8a1e41f4dd672b96c5f5eb5c88ad"},{"study_id":"PMID:41821301","source_id":"pubmed.41821301","pmid":"41821301","title":"Laparoscopic versus ultrasound-guided subcostal transversus abdominis plane block in sleeve gastrectomy: A randomised comparison of analgesic effectiveness and procedural feasibility.","year":2026,"publication_types":["Journal Article"],"library_type":"other","author_matches":[{"name":"Halil Alis","last_name":"Alis","given_name":"Halil","initials":"H","name_key":"alis halil","orcid":null,"position":5,"sole_author":false,"last_named_person":true,"roles":["last"],"affiliations":["Department of General Surgery, Istanbul Aydın University Faculty of Medicine, Istanbul, Turkey."],"countries":["Turkey"]}],"body_path":"results/section_builder/bariatric/sources/PMID_41821301.abstract.txt","body_sha256":"b2079936a646dff21d89cfc8e8d181d22bc56a661ad7ba395891389adc2d3670"}],"programme_id":"clinic.bookimed.3418","topics":["band","bypass","sleeve"],"procedure_relevance":["bariatric.sleeve"],"profile":{"intro":"Halil Alis is a colorectal surgeon at Valued Med Hub Hospitals in Istanbul, Turkey. 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