Expertise in
3
conditions

John R. Preto

Porto, PT 
Expertise in
3
conditions
Porto, PT 

Overview

John Preto practices practicing medicine in Porto, Portugal.

Mr. Preto is highly rated in 3 conditions, according to our data. His clinical expertise encompasses Obesity, Vitamin B12 Deficiency Anemia, Gallstones, Gastric Bypass, and Gastrectomy.

He is actively involved in clinical research, co-authoring 51 peer reviewed articles.

Gender

Male

Locations

Porto, Portugal

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Experts who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

51 Total Publications

Resectional Roux-en-Y Gastric Bypass Versus Standard Roux-en-Y Gastric Bypass: Impact of Concomitant Gastric Remnant Resection on Postoperative Complications and Weight Loss Outcomes in a High-Volume Center.
Resectional Roux-en-Y Gastric Bypass Versus Standard Roux-en-Y Gastric Bypass: Impact of Concomitant Gastric Remnant Resection on Postoperative Complications and Weight Loss Outcomes in a High-Volume Center.
Journal: Journal of metabolic and bariatric surgery
Published: May 12, 2026

Frequently Asked Questions about John R. Preto

Is John R. Preto a top-rated expert for Obesity?

MediFind is an objective health platform that identifies experts based on real-world data. John R. Preto is classified as an Distinguished expert for Obesity, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

Does John R. Preto participate in research or clinical trials?

Yes. John R. Preto has published 51 articles and abstracts on conditions like Obesity. You can view a list of John R. Preto's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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