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1481. Robert O'Rourke, MD
Practicing Surgeon
Surgeries Performed
• Gastric Banding 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Roux-en-Y Gastric Bypass 

Practice Location
1500 E Medical Center Dr
TC2920
Ann Arbor, MI 48109-5000

Phone: (734) 936-5823

1482. Ruary O’Connell, MD
Practicing Surgeon
Surgeries Performed
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Revision/Conversion of Prior Procedure 

Practice Location
4429 Clara St Ste 600
Suite 600
New Orleans, LA 70115-6951

Phone: (504) 897-0700

1483. Diana Obando, MD
Member
Practice Location
Jr ordonez 124, San Borja
Lima, 57234


1484. Jorge Obando, MD
Member

1485. Ayman Obeid, MD FACS
Member
Surgeries Performed
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Pediatric (Patients Under 18) 
• Revision/Conversion of Prior Procedure 
• Roux-en-Y Gastric Bypass 

Practice Location
Bir Hassan
Beirut, 1109

Phone: 01378049

1486. Nabeel Obeid, MD FACS
Practicing Surgeon
Surgeries Performed
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Revision/Conversion of Prior Procedure 

Practice Location
14650 E. Old US 12
Suite 201, Room 2119
Chelsea, MI 48118

Phone: (734) 936-5738

1487. Kosisochi Obinwanne, MD
Practicing Surgeon
Surgeries Performed
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 

Practice Location
2900 Hannah Blvd Ste 216
Suite 216
East Lansing, MI 48823-5382

Phone: (517) 364-8100

1488. Vladan Obradovic, MD FACS
Practicing Surgeon
Surgeries Performed
• BPD w/ Duodenal Switch 
• 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 
• Roux-en-Y Gastric Bypass 
• Single Anastomosis Duodeno-ileostomy 

Practice Location
100 N Academy Ave
Danville, PA 17822-9800


1489. Francisco Obregon Colombani, MD
Member
Surgeries Performed
• BPD w/ Duodenal Switch 
• Laparoscopic BPD w/ Duodenal Switch 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• One Anastomosis Gastric Bypass 
• Revision/Conversion of Prior Procedure 
• Roux-en-Y Gastric Bypass 
• Single Anastomosis Duodeno-ileostomy 
• Other Gastric Bypass 

Practice Location
311 Camden St
San Antonio, TX 78215


1490. Stephanie Oceguera, MD FACS
Practicing Surgeon
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 

Practice Location
1 Atwell Rd
Cooperstown, NY 13326-1301

Phone: (607) 547-3373

1491. Tyler Oe, MD
Member
Surgeries Performed
• Bariatric Endoscopy Procedures 
• Laparoscopic BPD w/ Duodenal Switch 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Single Anastomosis Duodeno-ileostomy 

Practice Location
5754 Howe St Apt 5
Apartment 5
Pittsburgh, PA 15232-2620


1492. Jin Sol Oh, MD FACS
Practicing Surgeon
Surgeries Performed
• Follows Other Surgeons' Patients 
• Laparoscopic BPD w/ Duodenal Switch 
• 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
880 W Central Rd Ste 5000
Suite 5000
Arlington Heights, IL 60005-2384

Phone: (847) 618-3800

1493. Mary Oh, MD
Member
Surgeries Performed
• Laparoscopic Sleeve Gastrectomy 
• Roux-en-Y Gastric Bypass 

Practice Location
11370 Anderson St Ste 2100
Loma Linda, CA 92354-3450

Phone: (909) 651-9863

1494. Peter Ojo, MD
Practicing Surgeon
Surgeries Performed
• Follows Other Surgeons' Patients 
• Gastric Banding 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• Revision/Conversion of Prior Procedure 
• Roux-en-Y Gastric Bypass 

Practice Location
30 Harrison St Ste 320
Johnson City, NY 13790-2162

Phone: (607) 763-8205

1495. Kingsley Okai, MD
Practicing Surgeon
Surgeries Performed
• Laparoscopic BPD w/ Duodenal Switch 
• Laparoscopic Biliopancreatic Diversion 
• Laparoscopic Sleeve Gastrectomy 
• Revision/Conversion of Prior Procedure 
• Roux-en-Y Gastric Bypass 
• Single Anastomosis Duodeno-ileostomy 
• Laparoscopic Roux-en-Y Gastric Bypass 

Practice Location
7910 W Jefferson Blvd Ste 112
Suite 112
Fort Wayne, IN 46804-4159

Phone: (260) 969-7121

1496. Allan Okrainec, MD MHPE FRCSC FACS
Practicing Surgeon
Surgeries Performed
• Laparoscopic Sleeve Gastrectomy 
• Roux-en-Y Gastric Bypass 
• Single Anastomosis Duodeno-ileostomy 

Practice Location
217 Lake Shore Dr 399 Bathurst St. 8MP-325
Toronto, ON M8V 2A5

Phone: (416) 603-5224

1497. Jarrod Olafson, MD
Member
Surgeries Performed
• Laparoscopic Sleeve Gastrectomy 
• Roux-en-Y Gastric Bypass 


1498. John Oldham, MD
Practicing Surgeon
Surgeries Performed
• Bariatric Endoscopy Procedures 
• Follows Other Surgeons' Patients 
• Gastric Banding 
• Laparoscopic BPD w/ Duodenal Switch 
• 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 
• Roux-en-Y Gastric Bypass 
• Single Anastomosis Duodeno-ileostomy 

Practice Location
950 Breckenridge Ln Ste 10
Louisville, KY 40207-5931

Phone: (502) 894-9499

1499. Alejandro Oliu, MD
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
1400 Madison Ave
Suite 100AA
Mankato, MN 56001-5473


1500. Rodrigo Otavio Oliveira, MDPhD FACS
Member
Surgeries Performed
• BPD w/ Duodenal Switch 
• Bariatric Endoscopy Procedures 
• Gastric Banding 
• Intragastric Balloon 
• Laparoscopic BPD w/ Duodenal Switch 
• Laparoscopic Roux-en-Y Gastric Bypass 
• Laparoscopic Sleeve Gastrectomy 
• One Anastomosis Gastric Bypass 
• Other Gastric Bypass 
• Pediatric (Patients Under 18) 
• Revision/Conversion of Prior Procedure 
• Roux-en-Y Gastric Bypass 
• Single Anastomosis Duodeno-ileostomy 

Practice Location
Rua Duarte Galvão 54 Lisbon
Lisboa, 1549-008

Phone: 351934426720