+ (92) 332-3758821 + (92) 336-5836583


We, at Doctor Obesity Clinic, aim to provide solutions to treat obesity and help prevent, manage, and resolve obesity-related illnesses like type 2 diabetes mellitus, hypertension, cardiovascular disease, stroke, sleep apnea, gallbladder disease, PCOS, eating disorders, and osteoarthritis, to name a few. We hold the following values:

Patient safety is always our #1 priority, that’s why we do not take any patient who is not eligible for the operation, instead, we guide them towards weight loss solutions better suited for them.

We are committed to providing affordable and accessible services to national and international patients.

Based on extensive scientific knowledge, a weight-loss operation is the most effective and durable treatment.

We pride ourselves in providing care that does not vary in quality because of personal characteristics such as gender, ethnicity, geographic location, and socioeconomic status.

Our patients are at the center of our care, we keep them informed every step of the way. The treatment plan devised for our patients is customized according to their comfort, preferences, and health needs.

We work towards educating the masses on the causes of obesity, effective ways to prevent it, the dire impact it can have on overall health and life expectancy, and the long-term treatments that are available.

Why Choose Us ?

While any surgical procedure has risks, a bariatric operation is considered safer when compared to other elective surgeries. You can trust that we only take patients who meet all the eligibility requirements of the surgery.

Our team of medical experts has extensive knowledge, international certifications, and years of experience in the field. Our head surgeon, Dr. Tanvir Raazi Ahmad has successfully performed over a thousand advanced laparoscopic surgeries for obesity, cancer, and other diseases including emergency and elective cases in his 21-year career.

Our practice follows international standards and safety guidelines in compliance with the International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO) and the American Society of Metabolic and Bariatric Surgery (ASMBS).

We at Doctor Obesity Clinic believe that there’s no “one-size-fits-all” solution to weight-loss. While diet and lifestyle modifications may work for some people, they may not be as effective for others. That’s why we strive to eliminate the stigma around obesity and its treatment and aim to offer surgical options to enhance the lives of people in the Pakistani community.

Doctor’s Profile

Dr. Tanvir Raazi Ahmad

Dr. Tanvir Raazi Ahmad

Medical Practice

Dr. Tanvir Raazi Ahmad strongly believes in honesty and professionalism. His surgical practice is based on ethics, scientific research, and modern principles.

Using a patient-centric approach, Dr. Tanvir ensures that his patients and their loved ones are involved in their treatment plan and well-informed every step of the way.

Furthermore, he has consistently maintained the highest international benchmarks of surgical quality by using advanced and reliable techniques.

Today, Dr. Tanvir has completely dedicated his knowledge and skills to spread awareness of the effectiveness of Bariatric and Metabolic Surgical Treatments in preventing, treating, managing, and reducing life-threatening illnesses like type 2 diabetes mellitus and obesity and other medical conditions like infertility, osteoarthritis, obstructive sleep apnea, and cancer.


In 2013, while working as a Leading Consultant Surgeon at Dr. Soliman Fakeeh Hospital in Jeddah, Saudia Arabia, Dr. Tanvir was intrigued by a revolutionary procedure called Bariatric and Metabolic Operation. An operation that has the capacity to potentially cure diabetes and obesity. Seeing the significant impact the surgery has on the overall patient’s quality of life, Dr. Tanvir decided to dedicate his practice to the treatment and prevention of obesity as a full-time Bariatric Surgeon. On realizing the scarcity of this life-changing treatment in the healthcare system of Pakistan, he decided to pursue it and bring it home to Karachi.

Having extensive experience and training as a Laparoscopic Surgeon, he traveled to Egypt, Germany, and Sweden to nurture his skills and gain experience and knowledge of the intricacies of Bariatric and Metabolic Surgery.


Dr. Tanvir devoted twelve years in Ireland and the UK towards excelling in General, Colorectal, Breast Cancer, and Laparoscopic Surgery.

On his return to Pakistan in 2007 he served as a consultant surgeon at Indus Hospital where he established the Advanced Laparoscopic, Endocrine, and Cancer Surgery Department as well as the Postgraduate Surgical Training Program. In 2011, he was appointed as the Chief of Surgery at Patel Hospital in Karachi.

In 2013, he joined the prestigious Dr. Soliman Fakeeh Hospital in Jeddah, Saudi Arabia, where he went on to perform more than 1000 successful surgeries.

In 2018, he returned to Karachi and started his Bariatric Surgery practice at South City Hospital, Clifton. In line with his aim to spread awareness and offer affordable treatments for obesity and related diseases, he established a private practice named Obesity and Diabetes Surgery (now named Doctor Obesity Clinic).


Fluent in English, Urdu, and Arabic, Dr. Tanvir is a member of the International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO). He is also a member of the International MGB/OAGB Surgeons Organization (MGB-OAGB Club). Dr. Tanvir obtained his FRCSEd in 1999 from The Royal College of Surgeons, Edinburgh, UK.

Dr. Tanvir received his MBBS from Sindh Medical College in 1993 and completed his internship at Jinnah Postgraduate Medical Center.

A certified Upper Gastrointestinal Endoscopy and Colonoscopy surgeon, Dr. Tanvir graduated from the Irish Surgical Residency Program under The Royal College of Surgeons in Dublin, Ireland, in 2007. He also obtained a diploma in Laparoscopic Surgery from Louis Pasteur University, Strasbourg, France.

Team Members

Consultant Respiratory Physician

FRCP (Glasgow), CCT (UK), MRCP (UK) Consultant Respiratory Physician One of our internationally renowned visiting consultants, Dr. Zubair Ahmed is the Head of Pulmonary at King Fahd Military Medical Complex in Dhahran, KSA. Dr. Zubair has extensive experience in a […]

Consultant Endocrinology & Diabetes

MBBS, DCH, MRCPI, FRCPCH, MSc Consultant Endocrinology & Diabetes A member of the European Society of Paediatric Endocrinology and The Arab Society of Paediatric Endocrinology and Diabetes, Dr. Noman Ahmad is one of our internationally renowned visiting consultants. A Consultant […]

Head of Operations

A performance-driven professional with over 20 years of healthcare management experience, Ms. Anjum has a Master’s Degree in Health Informatics & is an AHIMA-certified Registered Health Information Administrator (RHIA) & Healthcare Technology Specialist (CHTS-PW).

Bariatric Technician

With her technical Skills Aleezah is an important asset for the team. Participates as full member of the surgical team. Holding Laparoscope  during  Laparoscopic surgery..  Assist all bariatric surgery.Supervise the activity of supporting staff as appropriate.  She is technical assistance […]

Bariatric Coordinator

Beenish works as a liaison between the bariatric surgeon, hospital, staff and the patients. She oversees and helps organize the clinical activities of our bariatric surgery program and helps patients with long term follow up for better results.

Appointment Assistant

Jahanzaib performs administrative tasks including organizing and managing files, working as receptionist, scheduling patient appointments, and supporting other staff with organizational tasks.

BMI Calculator





Your BMI :

Click here to see BMI table

Category BMI
Underweight Less than 18.5
Normal Weight 18.5 to 23.5
Overweight 23.6 to 27.5
Obesity Class 1 (Obesity) 27.6 to 32.5
Obesity Class 2 (Serious Obesity) 32.6 to 37.5
Obesity Class 3 (Severe /Morbid Obesity) 37.6 or higher