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1881. Ajay Upadhyay, MD FACS FRCS
Practicing Surgeon
Surgeries Performed
• BPD w/ Duodenal Switch 
• Bariatric Endoscopy Procedures 
• Follows Other Surgeons' Patients 
• Laparoscopic Biliopancreatic Diversion 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• One Anastomosis Gastric Bypass 
• Other Gastric Bypass 
• Other Gastric Restriction 
• Revision/Conversion of Prior Procedure 
• Single Anastomosis Duodeno-ileostomy 

Practice Location
365 Hawthorne Ave Ste 101
Suite 101
Oakland, CA 94609-3115

Phone: (510) 465-5523

1882. Muhammad Uttra, MD
Member
Surgeries Performed
• Bariatric Endoscopy Procedures 
• Intragastric Balloon 
• Laparoscopic Sleeve Gastrectomy 
• One Anastomosis Gastric Bypass 
• Other Gastric Bypass 
• Pediatric (Patients Under 18) 
• Revision/Conversion of Prior Procedure 
• Roux-en-Y Gastric Bypass 


1883. Abtin Vahidi, MD
Member
Surgeries Performed
• Laparoscopic Sleeve Gastrectomy 
• One Anastomosis Gastric Bypass 
• Other Gastric Bypass 
• Roux-en-Y Gastric Bypass 
• Single Anastomosis Duodeno-ileostomy 

Practice Location
Zand Avenue, Namazi Hospital
Department of Surgery
Shiraz, 7134846114

Phone: 987132661

1884. Stefanie Vaimakis, MD FACS
Practicing Surgeon
Surgeries Performed
• Follows Other Surgeons' Patients 
• Gastric Banding 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Other Gastric Restriction 
• Revision/Conversion of Prior Procedure 
• Roux-en-Y Gastric Bypass 

Practice Location
690 Kinderkamack Rd Ste 202
Suite 202
Oradell, NJ 07649-1524

Phone: (201) 530-1900

1885. Diego Felipe Valdés Mondragón, MD
Member
Practice Location
Calle 5 36-00
Cali, 760043

Phone: 573214342211

1886. Carlos Valdivia Bejar, MD
Member

1887. Alvaro Valencia, MD
Member
Surgeries Performed
• Follows Other Surgeons' Patients 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Pediatric (Patients Under 18) 
• Revision/Conversion of Prior Procedure 

Practice Location
Carrera 9A No. 93-76 (302)
Bogota, 110221

Phone: (310) 269-6937

1888. Daniel Valencia Avalo, MD
Member

1889. Oscar Valencia Mendoza, MD
Member
Practice Location
Mexico Cit,


1890. Jose Vicente Valls, MD PhD
Member
Surgeries Performed
• Follows Other Surgeons' Patients 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Revision/Conversion of Prior Procedure 
• Roux-en-Y Gastric Bypass 
• Single Anastomosis Duodeno-ileostomy 

Practice Location
Avenida de Tamarindos
23 bajo.
Valencia, 46015

Phone: 0034609493220

1891. Catherine Valukas-Scifo, MD MS
Member
Practice Location
Chicago, IL


1892. Andrew Van Osdol, MD
Practicing Surgeon
Surgeries Performed
• Bariatric Endoscopy Procedures 
• Follows Other Surgeons' Patients 
• Laparoscopic BPD w/ Duodenal Switch 
• Laparoscopic Biliopancreatic Diversion 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Revision/Conversion of Prior Procedure 
• Single Anastomosis Duodeno-ileostomy 

Practice Location
1445 North Ave
Spearfish, SD 57783-1552

Phone: (605) 644-4170

1893. Kent Van Sickle, MD
Practicing Surgeon
Surgeries Performed
• Follows Other Surgeons' Patients 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Other Gastric Bypass 
• Revision/Conversion of Prior Procedure 
• Roux-en-Y Gastric Bypass 
• Single Anastomosis Duodeno-ileostomy 

Practice Location
8900 Floyd Curl Dr Ste 4A
San Antonio, TX 78240-1681

Phone: (210) 450-9200

1894. Brandon VanderWel, MD
Practicing Surgeon
Surgeries Performed
• Bariatric Endoscopy Procedures 
• Laparoscopic Sleeve Gastrectomy 
• Other Gastric Bypass 
• Revision/Conversion of Prior Procedure 
• Roux-en-Y Gastric Bypass 

Practice Location
19930 Ballinger Way NE
Shoreline, WA 98155-1223

Phone: (425) 778-2220

1895. Oliver Varban, MD FACS
Practicing Surgeon
Surgeries Performed
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Revision/Conversion of Prior Procedure 
• Roux-en-Y Gastric Bypass 

Practice Location
2799 W Grand Blvd # K9
Detroit, MI 48202-2608

Phone: (313) 916-4163

1896. Nilton Vargas Molina, MD
Member

1897. Brandon Varnell, MD
Practicing Surgeon
Surgeries Performed
• Bariatric Endoscopy Procedures 
• Follows Other Surgeons' Patients 
• Gastric Banding 
• Laparoscopic BPD w/ Duodenal Switch 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• One Anastomosis Gastric Bypass 
• Other Gastric Bypass 
• Other Gastric Restriction 
• Revision/Conversion of Prior Procedure 
• Roux-en-Y Gastric Bypass 
• Single Anastomosis Duodeno-ileostomy 

Practice Location
2448 E 81st St Ste 1100
Suite 1100
Tulsa, OK 74137-4205

Phone: (918) 505-3400

1898. Idelso Vásquez Llanos, MD
Member

1899. Vikram Vattipally, MD MBA MRCS FACS
Practicing Surgeon
Surgeries Performed
• Follows Other Surgeons' Patients 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Other Gastric Restriction 
• Revision/Conversion of Prior Procedure 
• Roux-en-Y Gastric Bypass 


1900. Danny Vaughn, MD FACS
Practicing Surgeon
Surgeries Performed
• Bariatric Endoscopy Procedures 
• Follows Other Surgeons' Patients 
• Intragastric Balloon 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Other Gastric Restriction 

Practice Location
840 Pine St Ste 750
Macon, GA 31201-7528

Phone: (478) 633-1458