Loading provider…
Loading provider…
Gastroenterology Physician in Torrance, CA
NPI: 1346347028Primary Practice Location
Pacific Endo-Surgical Center
3445 Pacific Coast Highway, Torrance, CA
Primary Employer
Providence Medical Institute
providence.org
HQ Phone
Get M.D. Gregory's Phone Numberphone_androidMobile
Get M.D. Gregory's MobileLooking to connect with more Physicians?
Dmand AI gives you access to real-time firmographics, buying signals, org charts, and decision-makers - helping your GTM teams prioritize accounts, personalize outreach with AI-driven automation, and close deals faster.
Get Started for Freearrow_outwardCA State Medical License
CA State Medical License
2002 - 2026

American Board of Internal Medicine
Gastroenterology
University of California (San Diego) Medical Center
Fellowship • Gastroenterology
2002 - 2005
McGaw Medical Center of Northwestern University
Residency • Internal Medicine
1999 - 2002
Pritzker School of Medicine
pritzker.uchicago.edu
Medical School
Until 1999
| # | Procedure Code (CPT®/HCPCS II) | Procedure Patients | Procedure Volume |
|---|---|---|---|
| 1 | 99214Established patient office or other outpatient visit, 30-39 minutes | 135 | 171 |
| 2 | 99213Established patient office or other outpatient visit, typically 15 minutes | 113 | 131 |
| 3 | 45380Biopsy of the large bowel using an endoscope (colonoscopy) | 104 | 105 |
| 4 | 43239Biopsy of the esophagus, stomach, and/or upper small bowel using an endoscope | 74 | 74 |
| 5 | 45385Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 73 | 73 |
Gluten-dependent enteropathy and atypical human leukocyte antigen alleles.
Sugar rush in the colon: why incidental findings on PET scan justify colonoscopy?
Authors: Ryan Olson
Journal: Am J Gastroenterol