Lauren Ross Ehrhart, MD

About

A donor egg cycle succeeds or fails at the stimulation stage: how many eggs a donor produces decides how many embryos a waiting family gets. Lauren Ross Ehrhart has published on the medical management of egg donors — the dosing and monitoring that determine that yield — alongside research on fertility preservation protocols, treatment of diminished ovarian reserve, and vitamin D status as a variable in assisted reproduction outcomes. Her patient panel at CCRM looks like that list: women building families with donor eggs, women with low reserve, and women freezing eggs or embryos because time rather than infertility is the obstacle.

She trained close to home and came back. Obstetrics and gynecology residency at the University of Colorado, reproductive endocrinology and infertility fellowship at the University of Southern California, then Denver in 2016 to join CCRM Colorado, where she has now practiced for nine years. She is board certified in reproductive endocrinology and infertility through the American Board of Obstetrics and Gynecology, and her fellowship training covered the full ART range rather than one slice of it: IVF, superovulation with intrauterine insemination, and reproductive surgery.

That surgical piece is practical at Lone Tree. A uterine finding that needs hysteroscopy does not automatically become another physician’s appointment. Her work has been presented nationally as well as published, and she holds a Castle Connolly Top Doctor designation. One note before you choose her on that record: the practice profile lists her as not accepting new patients, so confirm current availability when you call.

Clinical Expertise

• Donor egg cycles: recipient-side management and donor-side stimulation, both published subject areas
• Diminished ovarian reserve: protocol selection for patients who recruit few eggs, with attention to cumulative rather than single-cycle yield
• Egg and embryo freezing: preservation planning for elective and medical indications
• IVF with ICSI and PGT-A: complete cycle management through transfer, using the practice’s in-house genetics laboratory
• Reproductive surgery: hysteroscopic and laparoscopic evaluation and treatment, part of her formal ART training
• IUI with superovulation: the step-before-IVF option, chosen on evidence rather than habit

Why Choose Dr. Lauren Ross Ehrhart

She publishes on the donor cycle from both ends. Donor stimulation and recipient management are different skills; her work covers them.

Local training, long tenure. A Colorado residency and nine years at the same Colorado practice — continuity patients often look for and rarely get.

Breadth inside one visit. Surgical evaluation, stimulation and lab-based treatment all sit within her training, so findings do not require a new consultation elsewhere.

Nutrient-status research that is unglamorous and checkable. Her vitamin D and ART outcomes work is the kind of question patients actually ask at the kitchen table.

Professional Affiliations

American Board of Obstetrics and Gynecology certification in reproductive endocrinology and infertility. Chicago Medical School MD, University of Colorado residency, University of Southern California REI fellowship. Peer-reviewed publications and national presentations on fertility preservation, oocyte donor management, diminished ovarian reserve and vitamin D in ART. Castle Connolly Top Doctor.

Suitable For

• Families planning a donor egg cycle, including patients arriving after other clinics offered no donor program
• Low AMH or a previous poor response who want a protocol reconsidered
• Egg or embryo freezing before treatment, marriage, or time changes the options
• Patients needing uterine evaluation or hysteroscopy in the same practice as their IVF
• Colorado-based patients prioritizing continuity over a rotating specialist roster