- Graduate of Marquette University – 1969
- Medical School – Medical College of Wisconsin – 1973
- Residency – Northwestern University, Internal Medicine 1974
- Residency – Northwestern University, Anesthesiology 1977
- Board Certified Anesthesiologist
- Board Certified Pain Medicine
- American Society of Anesthesiologist – Member
- Illinois Society of Anesthesiologists
- Winnebago County Medical Association
- American Society of Regional Anesthesia
- Association of American Physicians and Surgeons and Pain Medicine
- Illinois Society of Regional Anesthesia
- American Society of Interventional Pain Physicians
- Illinois State Medical Society
Dr. Gahl has been practicing Anesthesia and Pain Medicine in Rockford since 1977.