Real medical care for real men. Practiced by Dr. Castellano since 1999.
Most TRT clinics put you in front of whoever's on shift, hand you a script, and call it care. Dr. Castellano runs it differently — same doctor every visit, same eye on your panel, three decades reading bloodwork in the same Orange County market. The protocols come from current peer-reviewed research, not a corporate playbook. The plan gets calibrated to your numbers, treats what's actually driving the symptom, and when the labs say a script isn't the answer, you hear that — straight.
How are your energy levels, really?
Five short questions. No email required. At the end you'll see a plain-English read on whether what you're feeling is the kind of thing Dr. Castellano works with patients on every week — and what the next step looks like.
This is a self-screen, not a diagnosis. A 1-on-1 with Dr. Castellano plus the panel is the only honest way to know.
How are your energy levels lately?
You don’t have to accept “it’s just aging.”
Family medicine and anti-aging — trained in both, practiced together.
Dr. Castellano received his medical degree from the University of California Irvine, College of Medicine in 1996 and has been board certified in Family Medicine since 1999. The most common concern for most patients in their late 30’s to 60’s was that they were tired, stressed out, had poor sex drive, poor sleep, and had generalized aches and pains. They were previously told to accept these changes as a normal part of the aging process. Dr Castellano realized that there had to be better answers than just acceptance. During his search, Dr. Castellano became board certified in Anti-Aging Medicine which led to a Fellowship in Anti-Aging, Regenerative, and Functional Medicine in order to receive the most advanced and up to date training available.
So what does this mean for you? This means you get the best of both Orthodox Medicine and Anti-Aging Medicine. In orthodox medicine, we treat diseases (Cardiovascular, Hypertension, Diabetes, Cancer, etc.) as they manifest with FDA-approved drugs. In Anti-Aging Medicine we seek to delay the aging process by extending the healthy part of your lifespan. We do this through hormone optimization, nutraceuticals, exercise and regenerative treatments.
“I don’t feel like myself anymore.
I want that back.”
Energy. Drive. The edge that used to come easily. They don’t disappear on a schedule — they get buried under medical patterns that are fixable when somebody actually looks.
That’s the work.
The full picture, not just a prescription.
Most men come in for one of two reasons — energy and drive feel off, or the numbers on a recent lab raised a question. Either way, here's what Dr. Castellano works on with patients.
Testosterone Therapy (TRT)
$250/mo flat — labs and monthly follow-ups included. Evidence-based testosterone therapy, 1-on-1 with Dr. Castellano every visit.
Anti-Aging Care
Hormone status, metabolic markers, screening cadence — protecting healthspan as you age, not chasing the anti-aging market.
Weight Loss
Many men's weight challenges are metabolic, not motivational. The labs come first; the protocol comes after.
Erectile Dysfunction
Discreet ED evaluation — vascular, hormonal, and lifestyle factors evaluated together. Workup first, prescription second.
Hair Loss
Evidence-based options — finasteride, minoxidil, PRP — matched to cause and goal. Cheap evidence-based first, escalation only when warranted.
Hormone Support
Thyroid, cortisol, and metabolic markers can produce low-T-like symptoms. Narrow diagnostics, narrow intervention.
Peptide Therapy
Conservative peptide use — evidence varies by category, and we stay current with the regulatory landscape.
Anabolic Steroid Care
Honest medical guidance for men who've used or are considering AAS. We don't prescribe; we help you stay safe.
Six things you won’t find at a chain clinic.
Continuity
Same doctor every visit, same chart, same conversation continuing. No rotating cast, no chain-clinic file transfers.
Credentials
UC Irvine MD ('96). Board-certified Family Medicine (ABFM). Anti-Aging Fellowship credentials (ABAARM). Three decades of practice.
Research Depth
Dr. Castellano works from the current peer-reviewed research in men's health and metabolic medicine — including the recent studies the standard guidelines haven't caught up to yet.
Patient-Aligned Practice
Fee-for-service by design. No insurance company setting your appointment length, no quarterly membership upcharges, no billing-code-driven protocols.
Root Cause
Men's health is metabolic health. We treat the underlying disease — not the surface symptom.
Truth
We won't promise you a miracle. We'll tell you the truth about your situation, the realistic outcomes, and what it'll take from you to get there.
“Plug the leak before you bail the boat. Cut the underlying cause before medicating the symptom.”
Four steps. No theatrics.
- 01
Sit down with Dr. Castellano.
1-hour visit, one-on-one. You and Dr. Castellano walk through your history and the symptom picture, and decide what the panel needs to cover.
- 02
Bloodwork.
Full hormone panel + metabolic markers. Lab order out from the visit. Roughly 30 minutes at the lab.
- 03
Plan the protocol.
Dr. Castellano reads the panel with you. If TRT is the call, $250/mo flat — labs and follow-ups included. If it's something else (thyroid, sleep, metabolic), the plan matches the panel. No long-term contract.
- 04
Recheck + adjust.
Labs at 6 weeks, then quarterly. Same doctor reading the trend. Adjustments based on the numbers and how you feel — both have to track together.
Real patients. Real reviews. Verified by Google.
Patients drive in from across the county.
The clinic sits on S Euclid St in Garden Grove — easy reach from Anaheim, Westminster, Santa Ana, and the wider OC corridor. Free on-site parking.
We see patients from Garden Grove, Anaheim, Westminster, Stanton, Santa Ana, Cypress, Buena Park, Orange, Fountain Valley, Huntington Beach, Costa Mesa, Tustin, Fullerton, Long Beach, Los Angeles, and across Orange County.
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 Dr. Castellano orders fresh labs. Either way, you’ll leave with a real read on what’s going on.
Mon–Fri 9 AM – 5 PM
Calling after hours? Leave a message — we’ll get back to you the next business day.