Yes, there are coaching institutes that offer online classes for UPSC Medical Science Optional subject. These institutes provide comprehensive and specialized guidance to help aspirants prepare for the UPSC Medical Science Optional subject effectively. Here are some of the popular coaching institutes that offer online classes for this subject:

1. EduRev:
- EduRev is a popular online learning platform that offers a wide range of courses, including UPSC Medical Science Optional.
- They provide video lectures, study materials, practice questions, and mock tests to help students prepare for the exam.
- The courses are designed by experienced faculty members who have expertise in the Medical Science Optional subject.
- EduRev offers a user-friendly interface and flexible study schedules, allowing students to learn at their own pace.
- They also provide doubt-solving sessions and personalized guidance to help students clarify their doubts and improve their understanding of the subject.

2. Vision IAS:
- Vision IAS is a renowned coaching institute that offers online classes for various UPSC Optional subjects, including Medical Science.
- They provide comprehensive study materials, video lectures, and test series to help students prepare for the exam.
- The classes are conducted by experienced faculty members who have a deep understanding of the subject and the UPSC exam pattern.
- Vision IAS also offers personalized guidance and doubt-solving sessions to ensure that students have a clear understanding of the concepts.

3. Drishti IAS:
- Drishti IAS is another popular coaching institute that offers online classes for UPSC Medical Science Optional subject.
- They provide well-structured study materials, video lectures, and test series to help students prepare for the exam.
- The classes are conducted by experienced faculty members who have in-depth knowledge of the subject and the UPSC exam.
- Drishti IAS also offers regular doubt-solving sessions and personalized guidance to help students improve their understanding and performance.

4. Unacademy:
- Unacademy is a leading online learning platform that offers a wide range of courses, including UPSC Medical Science Optional.
- They provide video lectures, study materials, practice questions, and mock tests to help students prepare for the exam.
- The courses are designed by experienced faculty members who have expertise in the Medical Science Optional subject.
- Unacademy offers a user-friendly interface and interactive learning experience, allowing students to engage with the faculty and clarify their doubts.

Overall, these coaching institutes offer comprehensive study materials, video lectures, and personalized guidance to help students prepare for the UPSC Medical Science Optional subject effectively. Students can choose the institute that best suits their learning style and preferences.