Transforming lives

From Pain to Possibility

Endometriosis Specialists — Integrative Endometriosis Excision™

Advanced Robotic MIGS Endometriosis Excision

Precision excision surgery, from early to deeply complex disease.

Precision Integrative Endometriosis Care

Molecularly informed, systems-based care before and after surgery.

Translational Research & Specialist Training

Advancing national standards in complex endometriosis care.

Closeup of robotic arms and tooling of the DaVinci robotic surgery machine

A female doctor sitting beside a female patient in an exam room with her hand on the patients shoulder offering comfort and reassurance, while patient and doctor both smile.

Welcome to the Lotus Endometriosis Institute

High Tech meets Warm Touch

Careful listening, advanced technology, clear guidance—from first consult through recovery.

Led by Dr. Steven Vasilev, MD—structured, evidence-based surgical and integrative care across the spectrum of endometriosis and adenomyosis.

10K+

Hours of Surgery

In advanced MIGS excision and complex pelvic reconstruction

1100+

Complex Surgeries

performed including advanced, multi-organ, and re-operative cases

30+

Years Experience

specializing in complex gynecologic and pelvic surgery

Board Certifications

Gynecology, Gynecologic Oncology, Integrative & Holistic Medicine

Dr Steven Vasilev MD

Director of Lotus Endometriosis Institute

Re-Operative

Endometriosis Surgery Expertise

Multi-Organ

Pelvic Excision Surgery

Deep Infiltrating

Pelvic Disease Excision

Dr. Steven Vasilev is one of the world's only quadruple board-certified endometriosis specialists. Complex cases are his specialty.

Science-Driven, Patient-Focused

The Lotus Approach

We combine advanced robotic excision surgery with comprehensive integrative support—nutrition, hormonal optimization, microbiome balance, stress and neuro-immune-endocrine axis modulation —to help optimize recovery.

Every plan is personal. There’s a reason patients come to California.

Evaluate

Listen & Clarify

We start with careful listening, review of records, and deep clinical context.

Explore Evaluation Process

Operate

Excision

Expert robotic surgery and integrative prep when it's the right fit for you.

Explore Excision Process

Recover

Heal

Evidence-based integrative care to ensure your recovery & long-term wellness.

Explore Integrative Healing

Our Patients

Our patients seek more than quick answers. They come for careful listening, expert evaluation, and a clear plan—guided by experience, precision, and follow-through.

Our Team

You’re supported by more than a surgical plan. Our team and trusted partners help coordinate the details that matter—so care feels clear, connected, and consistent.

Denise Chavez, Patient

“I trust Dr. Vasilev with my life

I live in Iowa, and they worked with me long distance via zoom to discuss my condition and surgery. Dr. Vasilev has an insurance team who worked with my insurance to reduce my financial burden, and they succeeded! This surgery is life changing for those of us who suffer everyday with chronic symptoms."

Insights, News, & Expert Guidance

Explore Recent Posts

Explore our regularly updated posts for clear answers and expert-guided insights to questions about endometriosis, treatment options, and whole-person care.

A photorealistic image of a confident young woman walking along a city path in morning light, with faint anatomical overlays of the pelvis, bladder, and bowel in the background, symbolizing their interconnection.

Adenomyosis

Mar 3, 2026

Overlooked Endometriosis Neighbors: Adenomyosis, Bladder, and Bowel Pain

Discover the link between adenomyosis, bladder, and bowel pain after endometriosis surgery. Learn why you might still feel discomfort and what to do.

9 minute read

Abstract flat vector illustration of gently flowing muscle strands in soft colors, suggesting pelvic floor muscle sensitivity and persistent pain after surgery.

Pelvic Floor Dysfunction

Feb 28, 2026

Pelvic Floor & Myofascial Pain After Endometriosis Surgery

Why Do I Still Hurt series article three about pain post-endometriosis surgery. Learn the basics about myofascial pain and treatment options.

10 minute read

A woman stands in a sunlit office, hand on her abdomen clearly in pain.

Pain Relief

Feb 27, 2026

When Your Nervous System Won’t Stand Down After Endometriosis Surgery

Explore why pain persists after endometriosis surgery and learn about central sensitization's role in pain management.