Dr. Lindsay KleinMD

Internal Medicine

at Banner Peak Health — Walnut Creek, CA

About

Dr. Lindsay Klein practices internal and functional medicine at Banner Peak Health, with a particular focus on women's health across the perimenopause and menopause transition. She is passionate about closing the diagnostic and treatment gap that many women encounter during these years. Dr. Klein applies hormone replacement therapy, including off-label use of testosterone in women when standard estrogen and progesterone regimens do not fully resolve symptoms such as brain fog.

She brings a nuanced approach to clinical decision-making, including how to apply population-level data — such as alcohol guidelines — to individual patient circumstances. Her clinical work spans vaginal estrogen therapy, menopausal hormone management, low-dose birth control for perimenopausal patients, and adult preventive care including vaccine protocols.

Conditions Treated

hormonal imbalance
perimenopause
menopause
brain fog
vaginal atrophy
menopausal symptoms
perimenopausal symptoms

Who is Dr. Klein right for?

Dr. Klein is an excellent fit for women navigating perimenopause or menopause who feel their symptoms are not fully addressed. Patients dealing with brain fog, hormonal imbalance, or gaps in their care will find her approach thorough and individualized. She also serves adults seeking preventive primary care with attention to detail. Women who want a clinician willing to consider off-label hormone options when standard protocols fall short will find Dr. Klein particularly well-suited to their needs.

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Frequently Asked Questions

Dr. Klein specializes in internal medicine, functional medicine, and preventive medicine. She focuses especially on women's health during the perimenopause and menopause transition. Her work addresses hormonal symptoms, brain fog, and the diagnostic gaps many women encounter during these years.

Yes, Dr. Klein offers hormone replacement therapy, including estrogen and progesterone regimens. She also uses testosterone off-label in women when standard hormone protocols do not fully resolve symptoms. She tailors each treatment plan to the individual patient's needs and response.

Yes, Dr. Klein focuses specifically on the perimenopause and menopause transition. She offers low-dose birth control for perimenopausal patients and a range of hormone management options. Her goal is to close the treatment gap women often experience during these years.

Dr. Klein provides adult preventive care including vaccine protocols and evidence-based screening. She applies clinical guidelines to each patient's individual circumstances rather than using a one-size-fits-all approach. Her functional medicine background also informs how she addresses root causes of health concerns.

Dr. Klein applies population-level research carefully to each individual patient's situation. She considers factors like personal history and symptom patterns before making recommendations. This nuanced approach shapes everything from hormone therapy decisions to how she interprets guidelines around topics like alcohol use.

Dr. Klein treats conditions including hormonal imbalances, menopausal symptoms, brain fog, and perimenopausal health concerns. She also manages adult preventive care and addresses conditions within her functional and internal medicine scope. Vaginal atrophy and related menopausal concerns are part of her clinical work as well.

Doctor profile last updated March 21, 2026