Testosterone therapy and men's health for Tustin. Nine miles up the 5 — an hour with the doctor, not fifteen minutes.
Castellano Health Institute serves Tustin men a 9-mile drive up the 5 — same doctor every visit, full in-house labs, and a first consult that runs a full hour because that's what a real workup takes.
Garden Grove · Mon–Fri 9 AM – 5 PM
The Tustin pattern Dr. Castellano sees most.
The Tustin patient picture is the mid-career professional — office and tech-park jobs around Tustin Legacy and The District, or the daily commute down the 5 into the Irvine employment corridor. Salaried, scheduled, forty to fifty-five. He keeps his annual physical, and every year it comes back “fine.” He doesn’t feel fine. Slower recovery, a softer middle, focus that takes more coffee to hold, and a drive that’s quietly gone missing.
The gap between “your labs are normal” and “you feel right” is usually a depth-of-read gap, not a test-count gap. A standard screen checks a total testosterone against a reference range that spans healthy twenty-five-year-olds and struggling seventy-year-olds. Dr. Castellano orders a focused panel — total testosterone, estradiol, LH, a complete blood count, and PSA when age calls for it — and reads those numbers against your symptoms and your own baseline rather than the population range. That’s the read a fifteen-minute slot can’t do, and it’s the reason the first consult here runs a full hour.
A short panel, where every marker earns its place.
The basic evaluation here is deliberately lean, and that is a clinical decision before it is a cost one. Total testosterone establishes whether there is a genuine deficiency, and it isn’t read off one morning in isolation. Estradiol shows how much of that testosterone is converting. LH answers where the problem actually sits — the testes themselves, or the pituitary signal telling them to work. A complete blood count is the marker that matters most for safety on therapy, and PSA goes on the order when age calls for it. Five things, each one there to answer a question that changes what happens next.
Which is the part the yearly physical can’t reach. A screen checks a total testosterone against a range spanning healthy twenty-five-year-olds and struggling seventy-year-olds, and stops at whether the number falls inside it. The depth here isn’t a longer list — it’s knowing whether an “in-range” testosterone is low for you, what the LH pattern says about the cause, and which number is actually driving how you feel. Every marker on the panel is explained here, including why it stays short.
Borderline numbers, real symptoms.
When the hormone panel reads borderline but the symptoms don’t, testosterone usually isn’t the whole story. For the Tustin patient, hormone support runs the wider workup that finds the thyroid or cortisol pattern underneath — and treats the actual driver.
Coming soon.
Dr. Castellano sees Tustin men every week. Their before-and-after stories will land here as patients give consent to share. In the meantime, ask about results in person — bring your most recent labs and we’ll show you how the trend lines look in practice for Tustin patients.
The questions Tustin patients ask most before the first visit.
- How far is the clinic from Tustin?
- Nine miles — up the 5 to the 22, exit S Euclid. Most Tustin patients are in and out of the office inside 90 minutes including the lab draw. Free on-site parking at the suite.
- What does the first visit look like?
- A one-hour sit-down with Dr. Castellano — history, symptom picture, options. If labs aren't already on file, the order goes out from that visit. The basic TRT evaluation is kept deliberately lean to hold your cost down: total testosterone, estradiol, LH, a complete blood count, and PSA when age calls for it. No protocol gets written before the labs come back and you've talked them through together.
- What's the typical protocol cost?
- TRT is a flat $250 a month — that includes the medication, the lab work, and your follow-up visits. No package add-ons, no contract. If TRT isn't the right call after the labs come back, no one is locked in.
Nine miles up the 5. Free parking on-site.
Tustin patients start with the same core program every man here does: testosterone replacement therapy with Dr. Castellano — $250 a month, labs and follow-up visits included. (The initial consultation and bloodwork before starting are a separate service and cost.)
One conversation tells you whether this is the right fit.
Call the office to set up a 1-hour consult with Dr. Castellano. Bring whatever bloodwork you have on file — or fresh labs get ordered up front. Either way, you’ll leave with a real read on what’s going on.
Calling after hours? Leave a message — we’ll get back to you the next business day.