SUMMARY OF SENTINEL EVENT: On June 7, 2022,  I scheduled an appointment, at pharmacy website, to receive my fourth Covid 19 Vaccine/Covid Vaccine Booster #2 at pharmacy, also, on June 7, 2022, at 6:00 PM.  As stated above, I scheduled the appointment at pharmacy website, and I followed the text message that I received, requesting that I advise the store, by completing a link from the text message, that I arrived at the store.  I checked in at the Pharmacy, where a Pharmacy Technician Trainee, requested that I provide her with my Covid 19 Vaccination Card. I provided her with two Covid 19 Vaccination Cards, one card representing the first two doses that I received, and the second card representing the third dose that I received. I was directed by that Pharmacy Technician Trainee to a Vaccination Area, where I was asked to have a seat.  A gentleman emerged, never introduced himself, wasn't easily identifiable, I asked him if he was a Pharmacist, he said yes. The Pharmacist opened an alcohol prep pad, prepped the skin of my left upper arm, asked me if I had any questions for him, I said no, and he administered a vaccination to me, in my left deltoid muscle. He proceeded to apply a Band-Aid to my arm, and said that he did not see where he placed the vaccine, but he thinks he covered the injection site with the Band-Aid. I asked the Pharmacist if "the booster" was half the strength of my original vaccinations, he said, yes, "but I gave you the full-strength dose, as that's what you signed up for." I was in disbelief, as I'm almost certain that I signed up for a Moderna Covid 19 Booster, I told him that I thought I signed up for a Moderna Covid 19 Booster. That was the extent of our conversations, I left the store.  I found it quite remarkable that the Pharmacist did not identify himself by name, nor did I see his name on his scrubs, neither the Pharmacist or the Pharmacy Technician Trainee asked me to identify myself, by presenting an ID, or stating my name. The Pharmacist did not verify my name, nor the vaccine that he was about to administer to me. The Pharmacist did not verify (verbally) my allergies with me, although, that was done when I made an appointment, on-line. I guess the Pharmacist assumed that I am the person who made the appointment, and presented the Covid 19 Vaccination Card to the Pharmacy Technician Trainee. It seems to me that many of the typical, ***patient safety*** verifications that are normally carried out, prior to a vaccine being administered to a patient, were not carried out, OR were defaulted to an on-line appointment making process.   I have no idea how this Pharmacist came to administer a full strength Covid 19 Vaccine to me. Nor can I explain why/how the numerous, standard, patient verification processes were not performed. Following my appointment, I went to pharmacy website to identify what I received - - a full strength dose of the Moderna Covid 19 Vaccine, or a "Booster Dose," of the Moderna Covid 19 Vaccine. In retrospect, I have no idea what I received, I could have received a Placebo, Normal Saline, or a vaccine for Lock Jaw or Syphilis; I have no idea what I received. I did note a Lot Number on my Patient Portal at pharmacy website, and I noted that I received 0.5 ml of something; I don't know if that something was the Full Strength Moderna Covid 19 Vaccine, or the Half Strength Moderna Covid 19 Vaccine. The only thing that I do know is that the Pharmacist told me that he administered the Full Strength Moderna Covid 19 Vaccine, to me, "as that's what you signed up for."  I was not asked to wait in the Vaccination Area, by the Pharmacist, following his administration of the vaccination, to me.   I am extremely concerned about this interaction. I believe this interaction represents a ***SENTINEL EVENT***, with numerous failures, and patient safety compromise. I do not know if this is an event reportable to the Pharmacy, or to the FDA, CDC, or the manufacturer, Moderna. I assume that pharmacy has the appropriate clinicians, lawyers, and risk managers in place to do a postmortem of this event.  I sent notice of the above event, by email, on June 7, 2022, to MD, and PharmD, Executive Vice President, Pharmacy and President of Pharmacy, and Executive Vice President and Chief Pharmacy Officer, Pharmacy Health and Co-President, Pharmacy, respectively.  I sent notice of the above event, by email (Hospital Patient Gateway), on June 8, 2022 to my Primary Care Physician, at Hospital.