Castle Rock Hormone Health, the Colorado-founded hormone replacement and optimization franchise, plans to open between 100 and 250 clinics in 2026. The growth push is drawing attention from investors focused on recurring-revenue healthcare businesses.
The partnership powering the pipeline
Recruiting qualified operators is where most fast-growing franchise brands stall. Castle Rock addressed that in March 2026 with a partnership with Franchise Sidekick, a consulting firm that has facilitated more than 10,000 franchise awards in five years. The firm works on a buyer’s-agent model: candidates pay nothing, and Franchise Sidekick is compensated by the brand once an agreement is signed.
The partnership gives Castle Rock a structured recruitment pipeline rather than relying on inbound inquiries. Candidates move through financial screening, a fit survey, territory review, owner validation calls, and a final in-person meeting before signing.
“This partnership is about finding franchise owners who share the same commitment to care that’s both data-driven and personal — not just adding locations for the sake of growth,” said Christopher Stolzman, co-founder and CEO of Castle Rock Hormone Health.
Why investors in this category are paying attention
Investors watching healthcare franchise models often come from real estate, fintech, and digital assets, drawn by the predictable monthly revenue preventive care businesses tend to generate.
Castle Rock’s entry costs fit that profile: a $150,000 minimum initial investment, $59,000 franchise fee, 6 percent royalty on gross sales, and 5 percent local marketing requirement. Comparable health franchise concepts begin above $872,000.
The U.S. hormone replacement therapy market was valued at $6.85 billion in 2025 and is projected to reach $11 billion by 2035. Demand spans perimenopause, post-menopause, and testosterone optimization, and the gender-inclusive, physician-supervised HRT franchise category at a national concierge level remains largely unclaimed, according to the company.
What makes this model different
The hormone health franchise field is narrow. Gameday Men’s Health operates 400-plus locations for male patients only. Serotonin Centers runs a broader anti-aging and medspa concept above $872,000 to start. Neither covers the full patient population Castle Rock serves. The model uses physician-supervised protocols developed by co-founder Dr. Lee Moorer, with treatment based on individual lab data rather than standardized menus.
That clinical foundation was in place before franchising began. Castle Rock launched its franchise model in February 2024 with more than 10,000 patients and over $10 million in annual revenue at 25 percent year-over-year growth.
“Castle Rock Hormone Health was built on the belief that healthcare should be proactive, personalized, and accessible. We’ve worked to create a model that’s replicable and supports a consistent patient experience. Our partnership with Franchise Sidekick is helping to bring that model to more communities,” said Stolzman.
