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Meet Our Providers

Sarah S. Hart, PMHNP, cPNP, CNS

Pediatric Mental Health Nurse Practitioner she/her

Sarah is a California native, born and raised near the beach in Santa Cruz. She completed her undergraduate studies at UC Santa Barbara and her Master’s of Science in Nursing at UCSF, where she became certified as a Pediatric Nurse Practitioner with a minor in Adolescent Health Care.

She has worked as an RN in Pediatric Oncology at UCSF Benioff Children’s Hospital in San Francisco and as a PNP at Chappell Hayes Center Health at McClymonds High (UCSF Benioff Children’s Hospital Oakland). Although she treated many patients at Chapell Hayes for sprains, strep, and sports physicals, she was surprised by how many students came in for Psychosocial issues. She became increasingly interested in the impact mental health had on adolescents’ well-being and later returned to UCSF to continue her studies in this area. She is now dual-certified in both Pediatrics and Psychiatry/Mental Health and is passionate about working to normalize mental health care for children and adolescents. She is thrilled to be joining Tamalpais Pediatrics and the Behavioral Health Team.

Sarah is married and lives in Marin with two dogs and two children. She loves hiking, traveling, reading, cooking and spending time with friends and family. She is also trying, without much success, to improve her Pickleball and Mahjong skills.

Rebecca Timme
Margo Hanlan

Tamalpais Pediatrics

Larkspur Office

5 Bon Air Road, Suite 105
Larkspur, CA 94939

Map & Directions

Phone
(415) 461-0440

Fax
(415) 461-3792

Novato Office

251 Vintage Way
Novato, CA 94945

Map & Directions

Phone
(415) 892-0965

Fax
(415) 461-3792

Office Hours

Monday - Friday
8:30 am - 5:00 pm
Closed for lunch

Saturday - Sunday
Closed

Appointments

To schedule an appointment for your child, call either office during business hours or send a request through your child’s patient portal account.

We are committed to seeing your child the same day if you feel they should be seen. During office hours, the advice nurse is available to answer any questions you might have.

Learn More
All Are Welcome Here
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After-Hours

If your child’s illness or injury is life threatening, dial 911.

When we are closed, call (415) 461-0440, Option 1 to speak to an advice nurse.

Learn More

Poison Control Hotline
(800) 222-1222

Suicide & Crisis Lifeline
Dial 988
www.988lifeline.org

© Copyright Tamalpais Pediatrics, 2025. All rights reserved. Site by Appleseed Solutions.
Margo HanlanMargo HanlanRebecca TimmeRebecca Timme
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