Onto Fertility is located at 12770 Lynnfield Drive in Englewood, Colorado, serving patients throughout the South Denver metropolitan area, including Englewood, Centennial, Parker, Lone Tree, Highlands Ranch, and surrounding Douglas and Arapahoe County communities. The clinic operates under the onto.health brand and also has a presence listed at the same address as "ONTO FERTILITY OF COLORADO PC" — the professional corporation through which the physicians practice. Patients exploring fertility care in Colorado can view additional providers in the Colorado fertility clinics directory.
Onto Fertility's positioning emphasizes accessible, patient-centered reproductive care. The South Denver suburb location fills a geographic gap between the University of Colorado Health System's programs in Aurora and the fertility clinics concentrated in Denver proper, giving South Metro patients a convenient option without commuting to the central city.
Physicians and Clinical Team
Onto Fertility is staffed by fellowship-trained reproductive endocrinologists practicing through the ONTO FERTILITY OF COLORADO PC professional entity. The dual listing of "Onto Fertility" (the brand) and "ONTO FERTILITY OF COLORADO PC" (the professional entity) at 12770 Lynnfield Drive reflects the common structure in which a physician's professional corporation operates within or alongside a branded clinic.
Patients can expect care from REI physicians who have completed subspecialty training in reproductive endocrinology and infertility. The team is supported by fertility nursing staff, embryologists, ultrasound technicians, and patient care coordinators who guide patients through the treatment process from initial evaluation to post-transfer follow-up.
Ask the practice about physician continuity during your cycle — particularly whether the same physician who conducts your consultation will be available for your egg retrieval and embryo transfer, or whether coverage rotates among providers.
Services and Treatments
Onto Fertility provides comprehensive fertility services for South Denver patients:
- Initial fertility consultation and evaluation
- Ovarian reserve assessment (AMH, FSH, antral follicle count)
- Semen analysis and male fertility evaluation
- Ovulation induction (oral and injectable protocols)
- Intrauterine insemination (IUI)
- In vitro fertilization (IVF)
- Intracytoplasmic sperm injection (ICSI)
- Preimplantation genetic testing (PGT-A, PGT-M)
- Frozen embryo transfer (FET)
- Embryo, egg, and sperm cryopreservation
- Fertility preservation for oncology and elective indications
- Donor egg coordination
- Recurrent pregnancy loss evaluation and management
- LGBTQ+ family-building pathways
Colorado has a diverse and active fertility-seeking population, including patients from Denver's tech and energy sectors, military-affiliated patients near Buckley Space Force Base and Fort Carson, and patients coming from more rural Colorado communities who travel to the South Denver metro for specialty medical care.
Laboratory and Success Rates
Onto Fertility's IVF laboratory supports the complete embryology workflow: fertilization, embryo culture to blastocyst, genetic biopsy (for PGT), and vitrification cryopreservation. The culture environment — including incubator technology, air quality management, and culture media selection — directly affects embryo development and the quality of embryos available for transfer or freezing.
Patients should review the most current cycle-level data published by the CDC's ART Surveillance program and the SART Clinic Summary Report.
Published outcome data for Onto Fertility may appear under the "Onto Fertility" or "ONTO FERTILITY OF COLORADO PC" entity in SART's registry. Ask the clinic which identifier to use when searching for their published outcomes.
Patient Experience
The Lynnfield Drive location is in Englewood's southern business corridor, adjacent to the Arapahoe/Douglas County line and easily accessible from I-25 (Arapahoe Road or Lincoln Avenue exits), E-470, and C-470. For patients in Highlands Ranch, Parker, Castle Rock, and Lone Tree, this location is often more convenient than traveling to Denver for fertility care.
Onto Fertility's brand positioning emphasizes a personalized, supportive care experience — an approach that resonates with patients who want to feel individually known by their provider team rather than processed through a high-volume network. The clinic's staff is experienced in guiding patients through the emotional complexity of fertility treatment alongside the medical process.
Ask about the clinic's scheduling flexibility for monitoring appointments, particularly regarding early morning slot availability and weekend access for bloodwork during active stimulation cycles.
Considering At-Home Insemination?
Not every fertility journey begins in a clinic. At-home intracervical insemination (ICI) is a lower-cost, private option that suits patients with no known fertility diagnosis — including single parents by choice, same-sex couples, and people who want to try a few cycles before committing to clinical treatment.
At-home insemination kits like those from MakeAMom come with step-by-step instructions designed for donor or partner sperm. Kits are a one-time purchase that can be reused until conception succeeds, require no clinic visit, and arrive in plain, discreet packaging. Many patients use them as a first step while working toward a fertility consultation — or alongside ovulation tracking while they wait for an appointment slot.
If you have a known fertility diagnosis, have been trying for 12 months without success (six months if you're over 35), or your physician has already recommended IUI or IVF, a board-certified reproductive endocrinologist is the right next step.
Insurance and Financing
Colorado does not have a state infertility insurance mandate for private employers. Coverage for fertility treatment depends entirely on the patient's employer plan. Some Colorado employers — particularly in the technology, energy, and healthcare sectors — voluntarily offer fertility benefits; check your Summary Plan Description or contact HR.
Colorado state employees on PERA-managed plans may have limited fertility evaluation coverage; confirm with your plan administrator. Military-affiliated patients should verify Tricare coverage for fertility services — Tricare covers some diagnostic services but IVF coverage is generally limited under standard military health plans.
For self-pay patients, Onto Fertility offers financial counseling to discuss cycle pricing, multi-cycle options, and access to third-party healthcare financing programs. Medication costs are a significant additional line item and should be factored into total treatment planning.
Frequently Asked Questions
What is the difference between "Onto Fertility" and "ONTO FERTILITY OF COLORADO PC"? "Onto Fertility" is the consumer-facing brand name and clinic brand; "ONTO FERTILITY OF COLORADO PC" is the professional corporation (PC) through which the physicians legally practice medicine in Colorado. Colorado law requires physician practices to be organized through professional entities. For patients, both names refer to the same clinic at 12770 Lynnfield Drive — billing and medical records will be managed through the professional entity. There is no substantive difference in care between the two names.
Does Colorado have any fertility insurance coverage requirements? Colorado does not mandate IVF insurance coverage for private employers. Some Colorado legislative sessions have considered infertility mandate proposals, but as of the current date no comprehensive mandate is in effect. Coverage depends entirely on your employer's plan. Check with HR or your plan administrator rather than assuming coverage exists.
Is the South Denver area well-served for fertility care, or should I consider driving to Denver? The South Denver corridor has become better served by fertility practices in recent years, and Onto Fertility at the Lynnfield Drive location represents an option specifically positioned for South Metro patients. Patients with complex cases who need academic fertility center resources (such as reproductive surgery, multi-disciplinary management, or research protocols) may benefit from also consulting the University of Colorado Anschutz Medical Campus in Aurora.
What happens if I need specialized services not available at Onto Fertility? If your case requires services beyond the clinic's scope — such as surgical sperm retrieval, advanced reproductive surgery, or highly specialized donor egg programs — the physicians can provide referrals to appropriate specialists. Colorado's Denver-Aurora market includes a range of fertility practices and academic programs capable of managing complex cases.