- Top Sex Clinic in Delhi | Best Sexologist in Delhi | Usma Clinic Welcome to the Usma clinic in Delhi NCR. We are ?arguably the best Sexologist clinic in allover India. To all sexual related issues get in touch with us at ?https://www.usmaclinic.com or contact with us @? +91- 8750 800 100, ?+91- 8750 800 200. We provieds 100% ayurvedic treatment and free sexual therapies.