Testosterone therapy and men's health for Anaheim. Five miles south of the Platinum Triangle.
Castellano Health Institute is the closest in-person specialty men's-health practice for Anaheim residents — five miles down S Euclid St from the Platinum Triangle, free on-site parking, same doctor every visit since 1999.
Garden Grove · Mon–Fri 9 AM – 5 PM
Two Anaheim patient pictures Dr. Castellano sees most weeks.
The first is the salaried Platinum Triangle professional — mid-30s to early 50s, desk-heavy, a gym membership that has stopped delivering, and energy that drops off by 3 p.m. and never quite comes back. Labs usually show a testosterone number that’s not flagrantly low but is low for the patient’s prior baseline. Sleep is fine on paper. Drive is the give-away.
The second is the Resort District shift worker — hospitality, security, theme-park service line, anyone on rotating schedules. Long-running shift work disrupts cortisol curves and sleep architecture in a pattern that looks like low T without always being low T. Reading those two signals apart is most of the work; once you do, the right protocol gets a lot smaller.
Thirty years of reading these panels — by the doctor you actually see.
Both of those pictures — the professional whose number is only low against his own baseline, the shift worker whose cortisol is impersonating low T — turn on interpretation, not just a lab value. That’s where credentials stop being letterhead. Dr. Castellano trained at UC Irvine School of Medicine, is board-certified in Family Medicine (ABFM), holds advanced certification in anti-aging and regenerative medicine (ABAARM), and has practiced for three decades.
What that buys on a Tuesday is judgment in the room: the physician who reads your panel is the one who ordered it, the one who adjusts the dose at eight weeks, and the one who remembers the conversation behind the numbers. No rotating provider opening your chart for the first time. Telling “low for you” apart from “inside the range” is the read three decades sharpen — and on this page that’s not a tagline, it’s who picks it up.
TRT is a start, not the whole map.
Testosterone answers one question; it isn’t the last one worth asking. For the Anaheim professional looking past testosterone alone, anti-aging care is the broader healthspan plan — muscle, bone, and metabolic function defended over years, not just a number corrected today.
Thank you, Doctor Castellano.
“Doctor Castellano uses cutting edge medicine and personalized care to transform lives. This is what a disabled athlete with a spinal cord injury looks like under his care. He increased my mobility and decreased the severity of my daily symptoms. He even helped me regain 30lbs of the 65lbs of muscle I lost to muscle wasting atrophy. Thank you Doctor Castellano!”
Individual results vary. This reflects one patient's personal experience — it is not typical, not medical advice, and not a guarantee of any outcome.
The questions Anaheim patients ask most before the first visit.
- How far is the clinic from Anaheim?
- Five miles south on S Euclid St — most Anaheim patients are in and out of the office inside 90 minutes, lab draw included. Free on-site parking at the suite.
- What makes the in-person visit worth the drive?
- The read. A testosterone value is easy to print; knowing whether it's low for you, whether a thyroid or cortisol signal is masking the picture, and how the trend moves across visits is interpretation — and that's what three decades of reading these panels in person is for. The number travels; the judgment stays in the room.
- Do you see Anaheim Resort District shift workers specifically?
- Yes. Rotating schedules wreck cortisol curves and sleep architecture in ways that can mimic low T without always being low T. Dr. Castellano reads the two signals apart, which is why those patients tend to stick once they find the practice.
Five miles south on S Euclid St. Free parking on-site.
Anaheim patients start with the same core program every man here does: testosterone replacement therapy with Dr. Castellano — $250 a month, labs and monthly follow-ups 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.