Unless you have formally withdrawn your membership, you are likely still counted as a member of the Mother Church, aka The First Church of Christ, Scientist, in Boston.
A quick e-mail to the Office of the Clerk, can confirm if you are still a member. If you are still a member, you can formally withdraw your membership via e-mail, or write a letter.
If you do it via e-mail, it takes 36-48 hours to confirm membership, and then formally withdraw. A sample letter is provided below.
The Church may ask why you are choosing to leave, however this should not impede your ability to do so.
Clerk The First Church of Christ, Scientist Membership, P06-10 210 Massachusetts Avenue Boston, MA 02115-3195
Feel free to use the following letter as a template to write your own letter to the Clerk (or copy and paste it into your e-mail). If you do not receive a reply within 30 days, you may want to follow up with an e-mail.
Italics denote elements that should be included in a formal letter, whether e-mail or postal mail.
Your Address Clerk The First Church of Christ, Scientist Membership, P06-10 210 Massachusetts Avenue Boston, MA 02115-3195 Date Dear Church Clerk, I hereby voluntarily withdraw my membership from The First Church of Christ, Scientist, effective immediately, and request that you remove my name permanently from your membership records. I wish no further contact from the Church except to confirm that my name has been removed from your records. I expect to receive that confirmation within a reasonably short time. My full name is ------- . (include maiden name if applicable) My address is ------- . (include previous address if you have moved since joining and are unsure which address they have on record) Thank you for taking care of this in a timely manner. Sincerely, Your Name