Monahan Vein Clinic brings to the Sacramento region expertise in evaluating and managing vein problems that is uncommon in medical practice. Vein disease is a branch of surgery that has been trivialized and neglected. Many non-specialists have presumed to treat vein disease with modern methods, though they lack formal training in this field. While not usually a life-threatening problem, chronic vein disease can cause discomfort, pain, swelling, and non-healing wounds of the leg. Most often, women with varicose veins (which occur much more commonly in women than men) are told that it is just a cosmetic problem and not to worry about it. This results in years, even decades, of neglect while these women go on to develop more advanced problems of vein disease. Over the last twenty years there have been great advances in our understanding and treatment of vein disease. Better diagnostics has led to better, more effective, minimally invasive, and more definitive treatment. There is now a major effort being made to educate the public, and physicians, about vein disease. Monahan Vein Clinic is committed to participation in this endeavor.


  • A comprehensive understanding of vein disease, treating your underlying vein problem, not just the surface manifestations
  • Expert ultrasound for accurate diagnosis provided in office
  • Minimally invasive treatment techniques, in office, allowing immediate return to normal activity
  • Injection treatment for spider veins and surface varicose veins
  • Radiofrequency ablation (Closure) procedure for varicose veins, and in some with complicated vein problems (leg ulcers)
  • Advanced ultrasound-guided injection techniques (endovenous chemical ablation)
  • Participation with other experts in vein disease in research and education


Dr. Daniel L. Monahan is the physician/surgeon of Vein Surgery and Treatment Center.  Mary Evers, LVN, is our office manager.  Dana Olsen is our receptionist and does patient registration.  Geanna Foster is our insurance and authorization expert.  Megan Ellis, Registered Vascular Technician, does our ultrasound examinations.  Jennifer Oettle, RN, does most of our sclerotherapy (vein injections).  Samantha van Dyke, LVN, is a certified compression stocking fitter and assists on most of our procedures.