
Hormone care · Santa Cruz, California
Christopher Hermanson, M.D.
Internal medicine and emergency medicine. NIH-funded research.
A private physician practice for hormone care — testosterone, bioidentical hormones, thyroid, and peptides.
Courtesy consultNew patients
Free phone consult.
A short call to see if the practice is a fit. Book a courtesy consult, or call (831) 298-0664.
The practice
The physician is in the room.
Dr. Hermanson is present at every visit and makes the treatment decisions. The plan is his.
Practice
The work
Men
Testosterone replacement for men, evaluated with laboratories and followed in person. Treatment is decided after the work is done — not from a protocol.
Women
Bioidentical hormone replacement for women. Plant-derived compounds, prepared after laboratories, matched to what is out of balance.
Thyroid & peptides
Thyroid evaluation and peptides as part of the same medical practice, considered when they belong in the plan.
CO2 laser resurfacing — new to Santa Cruz
Fractional CO2 laser resurfacing for acne scars, fine lines, sun damage, and skin texture, led by Dr. Hermanson. Now booking appointments for January 2027 and beyond.

The physician
Judgment, not a protocol.
Bioidentical hormones used here are plant-derived and share the same molecular structure as the hormones the body makes. After laboratories, a compounding pharmacy prepares what is indicated.
Diet, sleep, and training still matter. Medication is not a substitute for those. It is one tool, used carefully.