HealthTap Talk to Top USA Doctors Online Doctor Consultations via Phone and Video Chat. You can consult with a top certified doctor whenever you want. More than 100,000 verified, trusted doctors from 141 specialties are listed at HealthTap who can answer your health questions. You can do a video, voice, or text chat on your smartphone, tablet, or computer. When you initiate your consult, healthtap will connect you with a doctor on the line within a few minutes. You can talk about abdominal pain, allergies, asthma (stable/non-emergency), back pain, bee sting, bladder infections, cold, cough, depression, diarrhea, heartburn (gastroesophageal reflux disease), influenza, nasal congestion, nausea, nosebleed, painful urination, respiratory infection, scabies, skin infection, sports injuries, strep throat, travel medicine, urinary tract infection, vaginal itching, yeast infection, and more.