Yes, at least in a very technical sense. Salvation is not dependent on actions. God judges one's heart.
   But let's be honest. The Bible says that we are to love God with all of our heart, soul, mind, and strength (Mark 12:30). If you say you are a Christian yet do not attend church regularly, how can you say that you really love God sufficiently?
   Jesus emphasized the importance of his church. The Bible further emphasizes that regular worship, Bible study, fellowship with other believers, and service to one another are important. Likewise, the Bible warns against willful and persistent rejection of God (Hebrews 10:26).
   Here are some other things the Bible says:
— The church is God's household (1 Timothy 3:14-15).
— A Christian is be a member of God's household with every other Christian (Ephesians 2:19).
— In Christ we who are many form one body, and each member belongs to all the others (Romans 12:5).
— The person who loves God must also love other believers and be devoted to them (1 John 4:21, Romans 12:10).
   The gratitude and enthusiasm of an authentic saving faith leads us to want to thank and worship Him, to hunger for knowledge of truth, to desire a fellowship with other believers. Further, active church involvement provides an antidote to the culture.
   We are to share our experiences (Proverbs 27:17), our homes (1 Peter 4:9), and our problems (Galatians 6:2) with one another. Our faith moves us to action, to love and serve one another in words and in deeds (John 15:12-17, 1 Corinthians 12 and 13). Church is where faith is nurtured, sustained, and will be a basis for us sharing ur faith with others outside the church.
   God intends for you to be on the team—to be a member of his family. Each member belongs to all the others. The New Testament model is that all believers met together constantly, sharing everything with each other, learning from one another, and giving aid spiritually and in other ways as well. The local church is a devoted loving family with each member having a role to play. Please take the time to read these additional passages: John 13:35, 1 John 3:16, Ephesians 4:16, Acts 2:42-44, 20:7, Proverbs 27:17, 1 Peter 4:9-10, Galatians 6:2, 1 Corinthians 3:9, Hebrews 10:25..
   Now, an important point. You may have some rationalizations why you should not be a participating member of a local church, but they are most certainly selfish excuses. The fact that these selfish motives dominate your thinking is evidence to suggest that you do not really have a saving faith.
   Further, the Bible makes it clear that God wants your body, not just your spirit (Romans 12:1). God wants you. The church needs you. And you need the church.
   If you say that you do not believe in "organized" religion, does that mean you believe in "unorganized" religion? Doesn't the answer to that question reveal the silliness of your position? In regards to church involvement, Hank Hanegraaff of the Christian Research Institute flatly states that there is no such thing as a "Lone Ranger Christian."