Oak & Stone Wellness and Med Spa
Verified listingAbout Oak & Stone Wellness and Med Spa
What is Oak & Stone Wellness and Med Spa?
Oak & Stone Wellness and Med Spa is a functional medicine and aesthetics practice in El Cajon, California. Google lists it as a medical spa, and it describes itself as a functional medicine and natural aesthetic practice. Brandi Terra, NP and Guillermo Castillo, MD are the two people named as prescribers.
Its services fall into a few groups. Hormone care covers hormone replacement therapy, bioidentical hormones for women and testosterone replacement therapy. Weight loss care is GLP-1 injections, with semaglutide and tirzepatide named as the medications. The rest of the menu includes IV treatments (high dose vitamin C, ozone IV, MAH ozone and EBOO therapy), functional oncology, telemedicine and cosmetic treatments such as dermal fillers and neurotoxin injections. Weight loss is one service among many here.
It describes its GLP-1 care as medically guided and serves El Cajon, La Mesa and Rancho San Diego. In its own words: "Our care is built around taking the time to listen deeply." It does not list a street address, so call (858) 524-3059 to confirm where the office is. Google gives the practice a 5 rating from 28 reviews.
What does it cost?
It does not publish prices. It gives no consultation fee, and it does not say whether a monthly fee would include the medication, whether it accepts insurance, or whether HSA or financing is available. Membership terms and cancellation rules are not described. It asks readers to book a GLP-1 consultation by phone, so that call is where the numbers would come from.
What should you ask before you book?
Start with the prescriber. Ask who writes the prescription, whether Brandi Terra, NP or Guillermo Castillo, MD sees you at the start and at follow-up, and how often those visits happen.
Then ask about the medication. Is the semaglutide or tirzepatide brand-name or compounded? Does the monthly price include the drug? Ask what the first consultation, follow-up visits and lab work cost, since none of those are listed.
Finish with the practical terms. Ask whether the clinic takes insurance, what cancelling costs, whether there is a minimum commitment, what the office hours are and how long it has been open. Telemedicine is listed as a service without a description, so ask which visits can be done remotely.
Who is it a good fit for?
This is a good fit if you want GLP-1 injections, hormone therapy or aesthetic treatments near El Cajon, La Mesa or Rancho San Diego, and you are ready to pay out of pocket and get the price and medication questions answered before you commit. It may not suit you if you need a published price list before you call, because none is available.
Sources: oakandstonewellness.com, oakandstonewellness.com/glp-1-weight-loss-injections
Services Offered
What we confirmed
Read off Oak & Stone Wellness and Med Spa’s own website on 2026-10-11. These are their words, not ours.
- ✓Medical weight loss — listed on their site as “Oak & Stone Wellness and Medspa offers medically guided GLP-1 weight loss injections for patients in El Cajon and throughout La Mesa–El Cajon–Rancho San Diego, helping support appetite regulation, metabolism, energy, and sustainable long-term weight loss through personalized, wellness-focused care.” source
- ✓Hormone therapy — listed on their site as “Testosterone Replacement Therapy” source
We have not yet collected published prices or prescriber credentials for this clinic. When we do, they will appear here with a link to the page they came from — or a note saying the clinic publishes none, which is itself worth knowing. Call them for a price in the meantime.