Fremont, CA Nephrologists | Sutter Health Doctors
Nephrology • Fremont, CA
Clinic Type
Nephrology
Address
—
Phone
855-398-1633
S3ContactCenterCBO@sutterhealth.org
Opening Hours
Not published — contact the clinic to confirm hours.
Services Offered
—
Insurance & Payment
—
Languages Spoken
—
Social Media
Photos

What Patients Say
Overall sentiment across review platforms: mixed
- Sutter Health Profile (Dr. Shalini Sundar): 4.9/5 (75 reviews)
- Healthgrades (Dr. Peter Lunny): 4.5/5 (2 reviews)
- WebMD (Dr. Jeanie Ahn): 3.0/5 (17 ratings)
Patients praise
- Professional and knowledgeable medical care
- Attentive and clear explanations
- Efficient staff and scheduling experiences
- Effective monitoring of chronic conditions
Common complaints
- Difficult scheduling and cancellations
- Perceived lack of care or urgency from some providers
- Communication issues (rude bedside manner, not listening)
- Financial concerns regarding unnecessary testing or billing practices
"He listens extremely well to all your concerns and problems. He explains things to you well and makes sure you understand what he is saying before you leave."
— Healthgrades (Dr. Peter Lunny)"Dr. Ahn didn’t care to review my info for the whole month, until the very last moment. She was not sorry. Now I don’t want to see her at all."
— WebMD (Dr. Jeanie Ahn)Synthesized from public review platforms as of Jul 10, 2026 — sources: [1][2][3][4].
In the News
- Sutter Health Brings Advanced Kidney Care to Fremont | Vitals — Nov 19, 2025
- Dr. Eric J Lai | Nephrologist in Castro Valley, CA | Sutter Health — Apr 7, 2026
- Dr. Johan Winoto | Nephrologist in Elk Grove, CA | Sutter Health — Jun 12, 2026
- Dr. Gladys Balderama | Internal Medicine Doctor in Fremont, CA | Sutter Health — Jun 12, 2026
- Dr. Nancy Serpa | Family Doctor in Fremont, CA | Sutter Health — Jun 24, 2026
Information sourced from the clinic's website as of July 10, 2026.
More nephrology clinics in Fremont
Nephrology at Kaiser Permanente Fremont Medical Center - Fremont Medical Center is part of Kaiser Permanente’s Northern California network. The page highlights the center as a medical practice with a small local footprint (10 employees) based in Fremont, CA. - Role relevance: While the provided overview does not detail nephrology services, Kaiser Permanente centers typically offer specialty care (including nephrology) within their medical centers or affiliated clinics. To confirm nephrology availability at Fremont, you should check: - Fremont Medical Center’s facility page for listed specialties - Kaiser Permanente Northern California nephrology department contact or appointment portal - Kaiser Permanente member portal for physician directories and Nephrology referrals at Fremont Possible next steps: - Visit the facility page: healthy.kaiserpermanente.org/northern-california/facilities/fremont-medical-center-100367 - Use the Kaiser Permanente provider directory to search for nephrology at Fremont or nearby Kaiser facilities - Call the center’s main line or the nephrology department if listed to confirm availability, wait times, and referral requirements Note: The provided extract focuses on organizational details (employees, departments, executives) rather than clinical services, so exact nephrology offerings at Fremont are not explicitly stated here.
Comparing your options?
See other nephrology clinics in Fremont, or search the full directory by insurance, ratings, and more.

