Allegiance Gastroenterology is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Health Care
• Physicians & Surgeons

North American Industry Classification System (NAICS) Categories:

• Offices Of Physicians (Except Mental Health Specialists)
• All Other Miscellaneous Ambulatory Health Care Services > Health Care

Standard Industry Classification (SIC) Categories:

• Offices And Clinics Of Doctors Of Medicine
• Health And Allied Services, Nec > Health Care