About
Dr. Leah Grossman is a board-certified internist practicing concierge primary care in Thousand Oaks. She earned a B.S. in Chemistry from UC Berkeley. She then completed a Master of Science in Neuroscience at Tulane University, building a strong foundation in both systemic and cognitive health.
Dr. Grossman finished medical school in Miami and completed her Internal Medicine residency in Florida. She sharpened her skills managing complex, high-acuity patients during the COVID-19 pandemic. After returning home to the Conejo Valley, she served as a hospitalist at St. John's Regional Medical Center, working alongside leading subspecialists. Her clinical interests include longevity, wellness optimization, cognitive wellness, and personalized medical strategy. She brings the same attention to detail to every patient relationship, offering direct phone and text access as part of her care model.
Education & Training
Undergraduate
UC Berkeley, B.S. Chemistry
Medical School
Medical school in Miami (specific institution not named)
Residency
Internal Medicine, Florida (specific institution not named)
Additional Training
M.S. Neuroscience, Tulane University; Hospitalist at St. John's Regional Medical Center
Certifications
Conditions Treated
Who is Dr. Grossman right for?
Dr. Grossman is a strong fit for adults who want proactive, relationship-driven primary care. Patients managing chronic conditions benefit from her internal medicine expertise and continuous care approach. Her background in neuroscience makes her well-suited for patients with cognitive health concerns. She also works well with busy professionals who need same-day access and direct communication with their physician.
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Frequently Asked Questions
Dr. Grossman treats a broad range of adult conditions, including complex chronic illnesses and acute concerns. Her internal medicine training equips her to manage cardiovascular risk, metabolic conditions, and ongoing disease management. She also emphasizes preventive care and longevity planning as core parts of her clinical work.
Yes, Dr. Grossman holds board certification in Internal Medicine. She completed her residency training in Florida and has extensive experience managing high-acuity adult patients.
Dr. Grossman earned her B.S. in Chemistry from UC Berkeley and a Master of Science in Neuroscience from Tulane University. She completed medical school in Miami and her Internal Medicine residency in Florida. That combination of chemistry, neuroscience, and clinical training informs her whole-body approach to care.
Yes. Dr. Grossman built significant experience managing high-acuity patients during her time as a hospitalist at St. John's Regional Medical Center. She also treated complex cases during the COVID-19 pandemic. That background shapes how she approaches serious and multi-system conditions in her concierge practice.
Dr. Grossman focuses on longevity, wellness optimization, and personalized medical strategy. She also brings deep interest in cognitive wellness, drawing on her neuroscience graduate training. Systemic health and preventive planning are central to her practice philosophy.
Yes. Dr. Grossman provides direct phone and text access to her patients. She responds promptly to questions and concerns without requiring patients to go through a call center or third party.
Yes. Dr. Grossman actively coordinates with top subspecialists and hospitals on behalf of her patients. She helps navigate referrals, follow up on results, and ensure continuity across different providers and care settings.
Dr. Grossman sees adult patients across a wide range of health needs. Her practice suits individuals managing chronic conditions, those focused on prevention and longevity, and busy professionals who value direct access to their physician. She serves patients throughout Thousand Oaks, Greater Los Angeles, and Ventura County.
Doctor profile last updated October 31, 2026