Home › About › Peter O'Brien, NP
Peter O'Brien, NP
Board-certified family nurse practitioner. Six years in an intensive care unit, eight in urgent care. He describes the ICU work as being the tip of the spear — and it's the reason this practice runs the way it does.
Why the background matters
Most online testosterone clinics and most mobile IV services are built around throughput. A form, a card, a standing order, and a technician who has to phone someone if anything is unusual.
Peter can evaluate you, order and read your labs, decide what's appropriate and prescribe it himself. He has started IVs on people considerably sicker than anyone reading this. In his words, he knows them from the most simple to the most complex.
My job is not to sell you testosterone. My job is to teach you about it, so we can do what's safe, ethical and medically right.
Credentials
- NPI1639533490
- Board certificationAANP F0216786
- California RN831644
- Nurse practitioner95003926
- MSNSimmons College of Nursing, 2015
- BSNLakeview College of Nursing, 2009
Every one of these is publicly verifiable — through the NPPES registry, the California Board of Registered Nursing, and the AANP certificant directory. You shouldn't have to take our word for it.
Experience
- Six years, intensive care unit
- Eight years, urgent care
- Ten-plus years total in critical care
- Telehealth practice across California
What he treats
How he practises
Bloodwork before prescriptions. Mechanism explained before instructions. Honest about what a treatment won't do, and willing to say no when treatment isn't right.
He made a whole video about who shouldn't take testosterone, which is not the sort of thing a clinic trying to maximise sign-ups usually publishes.
Start with a conversation.
No charge to find out whether you're a candidate.