The temple of medicine located in the internal planes, under the leadership of Raphael, Regent of Mercury.
"The Temple of Alden is the temple of science. The internal bodies also get sick and are also in need of the assistance of these doctors. These doctors are the masters of science, who are wealthy in wisdom. They heal the internal bodies of the initiates and also of anyone who asks for help." —Samael Aun Weor, The Revolution of Beelzebub
"The Astral Light is the basis for all sicknesses and the fountain of all life. Every sickness, every epidemic, has its astral larvae. When these larvae become coagulated in the human organism, a sickness is the outcome. In the Temple of Alden, the masters seat their patients in an armchair that is under yellow, blue, and red lights. These three primary colors serve in order to make the larvae of a sickness visible in the Astral Body. The masters treat the organism with innumerable medications after having extracted those larvae from the astral organism of the patient. When the Astral Body is healed, then mathematically the physical body will be healed, because before the physical atoms of an organ become sick, the “internal” atoms of the same organ are already sick. When the cause is cured, the effect is also cured.
"Every sick person can write a letter to the Temple of Alden. Thus, he (she) will receive help from the Gnostic medics. The letter should be handwritten by the sick person, then it should be burned by the same person. However, prior to this, the letter should be perfumed with frankincense in the very moment before burning it. The astral letter, or the soul of that burned letter, will go to the Temple of Alden. Hence, the masters of wisdom will read the letter and will assist the sick person." —Samael Aun Weor, Esoteric Medicine and Practical Magic