The Real Gut Doctor
Verified listingAbout The Real Gut Doctor
What is The Real Gut Doctor?
The Real Gut Doctor is a functional medicine practice at 111 Deerwood Road in San Ramon, California, run by Dr. Jeffrey Mark, M.D. Dr. Frances Mark, Pharm. D., is also part of the team, though the prescriber on record is Dr. Mark. The practice centers on gut health, cardiometabolic health, and hormonal imbalances, and it also lists Regenerative Medicine, Therapeutic Plasma Exchange (TPE), Peptide Medicine, Post-COVID Recovery, and Sports Therapy among its services. So this is first a functional medicine clinic that treats digestive and metabolic conditions, with peptide therapy and TPE offered as part of a broader approach rather than a stand-alone weight loss or peptide shop.
The description of Dr. Mark's approach mentions "tailored dietary plans, specialized supplements, lifestyle adjustments, and the strategic use of peptides and other anti-aging therapies." TPE is described on the site as a procedure that separates plasma from blood cells and replaces it with a nutrient solution, aimed at things like immune triggers and biological age markers. Visits are by appointment only, with no walk-ins. It does not say whether telehealth is available.
What does it cost?
No prices are published for any service, consultation, or program. The listing notes a general price range in the higher tier but gives no dollar figures for an office visit, a peptide protocol, TPE, or lab work. If you are considering this practice, ask directly what the initial consultation costs, whether follow-up visits are billed separately, and whether any service (TPE in particular, given its complexity) carries a separate facility or lab fee. Ask too whether they accept insurance for any portion of care, since none is stated either way.
What should you ask before you book?
Ask whether Dr. Mark is the one signing off on any peptide prescription you're given, and whether Dr. Frances Mark's role is clinical or on the pharmacy side. Ask whether a peptide or supplement program has a monthly cost and whether medication is included in that cost or billed separately. Since Therapeutic Plasma Exchange is offered, ask what it costs per session, how many sessions are typically recommended, and what bloodwork or monitoring is required before and after. Ask whether telehealth visits are an option if you don't live near San Ramon, since that is not stated. Finally, ask what the cancellation or rescheduling policy is for appointments, since none is published.
Who is it a good fit for?
This is a good fit if you are looking for a functional medicine doctor who treats gut, hormonal, and metabolic issues together, and you want peptide therapy or TPE discussed as part of that larger picture rather than as a single transaction. It is less of a fit if you are looking strictly for a weight loss or hormone replacement program with published pricing and a simple monthly plan, since neither is spelled out here and you will need to ask for the numbers directly.
Sources: therealgutdoctor.com
Services Offered
What we confirmed
Read off The Real Gut Doctor’s own website on 2026-10-10. These are their words, not ours.