Loading provider…
Loading provider…
Orthopaedic Hand Surgery Physician in Orange, CA
NPI: 1740379809Primary Practice Location
UNIVERSITY OF CALIFORNIA IRVINE MEDICAL CENTER
101 The City Dr S, Orange, CA
Primary Employer
Orthopaedic Faculty of Irvine
ucihealth.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
1994 - 2025
WA State Medical License
1997 - 1998

American Board of Orthopaedic Surgery
Orthopaedic Surgery

American Board of Orthopaedic Surgery
Surgery of the Hand
University of Washington
Fellowship • Hand Surgery (Orthopaedic Surgery)
1997 - 1998
Los Angeles County-Harbor-UCLA Medical Center
Residency • Orthopaedic Surgery
1992 - 1997
Chicago Medical School at Rosalind Franklin University of Medicine and Science
Medical School
Until 1992
| # | Procedure Code (CPT®/HCPCS II) | Procedure Patients | Procedure Volume |
|---|---|---|---|
| 1 | 99213Established patient office or other outpatient visit, typically 15 minutes | 136 | 230 |
| 2 | 99214Established patient office or other outpatient visit, 30-39 minutes | 81 | 110 |
| 3 | 99203New patient outpatient visit, total time 30-44 minutes | 50 | 50 |
| 4 | 99204New patient office or other outpatient visit, 45-59 minutes | 26 | 26 |
| 5 | 20550Injections of tendon sheath, ligament, or muscle membrane | 18 | 27 |
High-resolution MRI of the ulnar and radial collateral ligaments of the wrist.
Authors: Trumble, T E, Rafijah, G, Gilbert, M, Allan, C H, North, E, McCallister, W V
Journal: J Hand Surg Am