
Peninsula Doctor
Quick Facts
| Practice Type | Concierge |
| Location | Menlo Park, San Francisco, Los Altos, Woodside, Palo Alto, Portola Valley, Atherton, Bay Area |
| Doctors | David Hiroshima M.D., Family Medicine, Judy Kim M.D., Family Medicine, Ian Kroes M.D., Family Medicine |
| Panel Size | 200 patients per doctor |
| Telehealth Type | Video conference, phone calls, text |
| Housecalls | Yes |
| Telehealth Available | Yes |
About
At Peninsula Doctor, three physicians share a conviction that medicine works best when doctors truly know their patients. Dr. Ian Kroes founded the practice in Menlo Park, drawing on a family tradition of personal, relational care that spans generations. His father, Dr. John Kroes, built a beloved practice rooted in community relationships, making house calls and caring for families through every stage of life. That same spirit guides Peninsula Doctor today.
The practice serves adults and families across the Bay Area, including multiple generations of the same households. Drs. Ian Kroes, David Hiroshima, and Judy Kim each hold Stanford or equivalent medical training and bring decades of family medicine experience to a panel of roughly 200 patients. The team extends beyond physicians to include registered dietitians, certified diabetes educators, fitness trainers, and nutrition and metabolic science specialists. Peninsula Doctor offers advanced diagnostics through its Next Level program, using genetic testing and body analysis for early detection and deeper health insights. Patients reach their care team by text, phone, video, or in-person visit. The practice holds admitting privileges at Stanford, El Camino, Sequoia, and Lucile Packard Children's Hospital, and provides priority specialist referrals throughout the Bay Area and nationally.
Details
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Frequently Asked Questions
Peninsula Doctor caps its panel at approximately 200 patients across the three-physician practice. That limit allows each doctor to build a genuine, ongoing relationship with every patient they serve. The practice cares for adults, children, and multiple generations of the same families.
Members receive access to same-day appointments, evening and weekend availability, and direct communication with their physician by text, phone, or video. The practice also provides annual exams, lab work, vaccines, preventive screenings, and coordination with Bay Area and national specialists through priority White Glove Referrals. Wellness services including nutrition counseling and fitness assessments are also available to members.
Yes. Peninsula Doctor physicians are available by text, phone, video conference, and in-person visits. The practice also offers evening and weekend availability for added flexibility. Members can expect responsive, direct communication with their care team.
Yes. The practice offers secure video visits alongside phone and in-person options. Patients choose the format that fits their schedule and situation. The care team responds promptly through whichever channel works best.
Yes. The practice makes house calls when patients need in-home care. This tradition traces directly to the founding vision of Dr. Ian Kroes, inspired by his father's model of bringing care to patients wherever they are.
The Next Level program uses advanced technology including genetic testing and body analysis to provide deeper health insights and early detection. It goes beyond standard lab work to identify risk factors before symptoms develop. The practice designs these evaluations around each patient's individual health profile.
Yes. The Peninsula Doctor physicians hold admitting privileges at Stanford, El Camino, and Sequoia Hospitals, as well as Lucile Packard Children's Hospital. This means your doctor can follow your care if you need hospital-level treatment, maintaining continuity through serious health events.
Yes. The practice cares for patients from newborns through elders and regularly serves multiple generations of the same family. Dr. Judy Kim holds additional certification as a menopause specialist, and the practice covers women's health, pediatric care, and everything in between.
Prospective patients can reach Peninsula Doctor by phone, email, or through the contact form on the practice website. The team responds promptly to every inquiry. Patient intake forms are available online through a HIPAA-compliant encrypted system to streamline the onboarding process.
Yes. The practice offers White Glove Referrals, giving members priority access to specialists throughout the Bay Area and nationally. The physicians coordinate closely with referred specialists to ensure continuity of care throughout the process.
Practice last updated March 21, 2026

