West Coast Fertility Centers (Fountain Valley, CA) — A Complete Patient Guide

West Coast Fertility Centers is a long-established reproductive endocrinology and infertility (REI) practice in Fountain Valley, in the heart of Orange County. The practice was founded in 1988 by David G. Diaz, MD, FACOG — one of Orange County's pioneering REIs, Loyola University School of Medicine, University of Missouri Ob/Gyn residency, and a two-year REI fellowship at Harvard Medical School / Beth Israel Hospital in Boston. Dr. Diaz has since retired from active clinical practice, and the practice today is led by Vitaly A. Kushnir, MD as Medical Director. With a 4.8-star Google rating across 244+ reviews and a satellite office in Downtown Los Angeles, West Coast Fertility Centers is one of the more patient-accessible IVF programs serving the Southern California market.

About the Practice

• Patient-facing brand: West Coast Fertility Centers
• Legal entities: West Coast Fertility Centers LLC (NPI 1285204834, enumerated 2021-06-27) and West Coast Fertility Medical Group PC (NPI 1922711860, enumerated 2023-01-05). Both carry taxonomy 207VE0102X (Obstetrics & Gynecology, Reproductive Endocrinology & Infertility) and list Dr. Kushnir as authorized official. This LLC/PC dual-entity structure is the standard California arrangement for a professional fertility practice — see the FAQ at the bottom of this guide.
• Founded: 1988
• Website: westcoastfertility.com

Physician Roster

Vitaly A. Kushnir, MD — Medical Director Dr. Kushnir is a dual-boarded reproductive endocrinologist (ABOG-certified in Obstetrics and Gynecology and in Reproductive Endocrinology and Infertility). He earned his MD at the Sackler School of Medicine, Tel Aviv University, completed Ob/Gyn residency at Rutgers New Jersey Medical School, and completed his REI fellowship at Emory University. He serves as Associate Professor of Ob/Gyn at UC Irvine with admitting privileges at UCI Medical Center, has 90+ peer-reviewed PubMed publications, and previously consulted for the CDC's Division of Reproductive Health. Bilingual English/Russian.

Kendra L. Perkins, DO, FACOG — Gynecology and Fertility Board-certified Ob/Gyn and Fellow of the American College of Obstetricians and Gynecologists. Medical degree from Des Moines University; Ob/Gyn residency at Cooperman Barnabas Medical Center/Rutgers NJMS. Joined the practice in 2024 after private OB/GYN practice affiliated with Hoag Hospital, Newport Beach.

Jeanie Kim, MSN, WHNP-BC — Women's Health Nurse Practitioner, bilingual English/Korean. MSN Frontier Nursing University; prior experience in high-risk obstetrics at Beth Israel Deaconess (Boston).

David G. Diaz, MD, FACOG — Founder (retired from clinical practice). Loyola University Stritch School of Medicine; Ob/Gyn residency University of Missouri; REI fellowship Harvard/Beth Israel.

Services

• In Vitro Fertilization (IVF) — standard, mild, and natural-cycle protocols
• Intrauterine Insemination (IUI) — stimulated and unstimulated, partner or donor sperm
• Egg freezing and fertility preservation — elective and oncofertility
• Donor egg cycles — recipient coordination with established donor programs
• Preimplantation Genetic Testing (PGT-A / PGT-M / PGT-SR)
• Gestational surrogacy coordination and LGBTQ+ family-building pathways
• Male-factor evaluation and semen analysis
• Long-distance and telehealth consultation for out-of-area patients

What This Practice Is

West Coast Fertility Centers is a SART-member REI practice (SART CORS) with an on-site embryology and andrology laboratory at the Fountain Valley suite. The lab holds a California Department of Public Health tissue-bank license and a CMS CLIA certificate (moderate/high-complexity testing), and is FDA-registered. This is full-scope REI: egg retrievals, ICSI, laser-assisted hatching, embryo biopsy, vitrification, and frozen transfers are performed in-house rather than sent out. SART-member status means the practice reports cycle-level outcomes to ASRM/SART and the CDC ART Success Rates registry.

California Insurance Context — SB 729 Phase-In

California's landscape for fertility coverage changed materially with SB 729 (signed 2024), which in 2025 began phasing in a large-group mandate requiring commercial insurers to cover diagnosis and treatment of infertility, including up to three IVF cycles. The mandate applies to large-group fully insured plans regulated by California DMHC/CDI; CalPERS coverage is phased in 2027, and ERISA self-funded plans are exempt unless the employer opts in. Patients should confirm with their plan (1) whether their plan is DMHC/CDI-regulated vs. self-funded ERISA, (2) the number of covered retrievals/transfers, and (3) prior-authorization requirements for PGT. See our 2025 guide to state fertility insurance mandates.

Patient Experience

The 4.8-star Google rating (244+ reviews) reflects consistent patient feedback on clear physician communication, bilingual access (English/Russian with Dr. Kushnir, English/Korean with Jeanie Kim NP), and the practical convenience of a single-site lab plus a Downtown LA satellite for monitoring. Reviews repeatedly describe a clinic that treats patients "regardless of ovarian reserve, weight, sexual orientation, relationship status, or ethnic background" — a meaningful accessibility signal in a specialty that has historically served a narrower demographic.

Considering At-Home Insemination?

Not every fertility journey starts in a clinic. For patients without a diagnosed fertility problem — including single parents by choice, same-sex female couples, and people who want to try a few cycles before an REI consult — at-home intracervical insemination (ICI) is a lower-cost, private option. MakeAMom at-home insemination kits are reusable, ship in plain packaging, and come with step-by-step instructions for donor or partner sperm. Many patients use them while waiting for a specialist appointment or alongside preconception-health optimization. If you've tried for 12 months (6 months if age 35+) or have a known diagnosis like blocked tubes, severe male factor, or diminished ovarian reserve, an REI is the right next step.

When to Consult West Coast Fertility Centers

A consultation is appropriate if you have tried to conceive for 12+ months (6 months if age 35+), have a known infertility diagnosis (PCOS, endometriosis, diminished ovarian reserve, tubal factor, male-factor infertility), are planning egg freezing for medical or elective reasons, are an LGBTQ+ individual or couple pursuing donor-sperm IUI/IVF or reciprocal IVF, or are an intended parent working with a gestational carrier. For help interpreting clinic outcome data, see our guide on how to read IVF success rates.

Location and Contact

• Address: 11160 Warner Ave, Suite 411, Fountain Valley, CA 92708
• LA satellite: 1127 Wilshire Blvd, Downtown Los Angeles
• Phone: (714) 513-1399
• Website: westcoastfertility.com

For other California REI options, see our California fertility clinic directory.

FAQ

Why do I see two Fertlo entries for this clinic — one under "West Coast Fertility Centers LLC" and one under "West Coast Fertility Medical Group PC"? Both entries refer to the same Fountain Valley clinical practice. California requires that medical services be delivered through a Medical Professional Corporation (MPC / PC) whose shareholders are physicians — here, West Coast Fertility Medical Group PC (NPI 1922711860). Administrative, non-clinical, and facility-ownership functions are commonly organized under a sister LLC — here, West Coast Fertility Centers LLC (NPI 1285204834). Both NPIs carry the same REI taxonomy (207VE0102X), the same address, the same phone number, and Dr. Kushnir as authorized official. The LLC name is the patient-facing brand used on the clinic's website, Google listing, and signage, so Fertlo treats the LLC slug as the canonical editorial and flags the PC slug as a directory duplicate.

Is West Coast Fertility Centers a SART-member clinic? Yes — and the practice reports outcome data to the SART/CDC ART registry. The most recent clinic-level figures are typically ~2 years in arrears; verify current data directly at cdc.gov/art or sartcorsonline.com.

Does the practice treat LGBTQ+ patients and single parents by choice? Yes, explicitly — donor-sperm IUI/IVF for single women and female couples, reciprocal IVF, and gestational surrogacy pathways are routine service lines.

Does the practice operate its own embryology lab? Yes. The embryology and andrology labs are on-site at the Fountain Valley suite, CDPH-licensed, CLIA-certified, and FDA-registered for tissue handling.

Is Dr. David Diaz still seeing patients? No — Dr. Diaz is the founder of the practice but has retired from active clinical practice. Current REI care is led by Dr. Vitaly Kushnir, MD.

Editorial note: Independently written by the Fertlo editorial team; not sponsored. See our editorial policy.