Brian Sebastian, MD
30 Patient Reviews
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Office Hours

  • Mon:8:30am - 5:00pm
  • Tue:8:30am - 5:00pm
  • Wed:8:30am - 5:00pm
  • Thu:8:30am - 5:00pm
  • Fri:8:30am - 5:00pm

Brian Sebastian, MD

Internal Medicine Physician - General

Highlights

  • Board Certified

Biography

Dr Sebastian has lived and worked in Sonoma since 2005, when Sonoma Valley Hospital recruited him to set up a private practice. He joined Prima Medical Group in 2007 and has worked for PMG since that … Read more ›

Featured Review See More Reviews

I once had a serious issue on the weekend and Dr Sebastian dealt with it immediately…

Anonymous

Summary

Provider Training

UniversityDegreeFocusGraduated
Georgetown University School of MedicineMedical DegreeNot Specified
Duke University School of MedicineMedical Degree1997

InstitutionFocusYear
Residency - Georgetown University Hospital/Washington Hospital Center Program Not Specified
Residency - Georgetown University Hospital, St. Christopher's Hospital for ChildrenNot Specified
Residency - Georgetown UniversityNot Specified
Continuing Medical Education (CME) - GEORGETOWN UNIVERSITY HOSPITAL, WASHINGTON DC 2000
Continuing Medical Education (CME) - Georgetown University Hospital, Washington, DC, Internal Medicine Not Specified

CertificationCert. BodyYear
Internal medicineInternal MedicineNot Specified

Photos

Provider Profile 0Provider Profile 1

Specialties

Languages Spoken
English
Medical Specialties
  • Internal Medicine Physician

Accepts New Patients: Yes

Payment Options

Payment Details

Reviews

Average Rating: 5
Number of Reviews: 30
Most Recent Review: 05/10/2026
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Office & Staff Evaluation Not rated

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Office Appearance & Atmosphere Not rated
Handling of Billing Matters Not rated
Average Wait Time Not Rated

Provider Evaluation

Listening Skills
Clear Explanations
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Verified Patient

I once had a serious issue on th...

I once had a serious issue on the weekend and Dr Sebastian dealt with it immediately

Anonymous 05/10/2026
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Verified Patient

I really like Dr. Sebastain's be...

I really like Dr. Sebastain's bedside manner. He listens, asks the right questions, and proposes the right path in a caring and easy going manner.

Anonymous 04/03/2026
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Verified Patient

My primary care physician is won...

My primary care physician is wonderful. So yes I'd recommend him - if he's even taking new patients

Anonymous 03/06/2026
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Verified Patient

Brian Sebastian is a great docto...

Brian Sebastian is a great doctor and wonderful human being

Anonymous 02/13/2026
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Verified Patient

This physician is a treasure....

This physician is a treasure.

Anonymous 12/30/2025
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Verified Patient

I've seen Dr. Sebastian for many...

I've seen Dr. Sebastian for many years. He is quite knowledgeable and offers options to any problems I have.

Anonymous 04/17/2026
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Verified Patient

Group practices are great becaus...

Group practices are great because when PCP inavailable, can rely upon another ptovider to assist and communicate.

Anonymous 04/03/2026
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Verified Patient

Best doctor cares. Smart. Knowab...

Best doctor cares. Smart. Knowable . Goes above and beyond

Anonymous 02/20/2026
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Verified Patient

Dr. Sabastian was very friendly,...

Dr. Sabastian was very friendly, knowledgeable, and listened well.

Anonymous 02/09/2026
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Verified Patient

Excellent experience. I've never...

Excellent experience. I've never seen a physician better at time management. He listens carefully, explains fully and in a very understandable way. He is very efficient, often brisk but never brusk. Makes patients feel like they have his full attention. He immediately looks at labs and communicates promptly. He is always up to date with how a patient is progressing. He is extremely generous about offering tips suggestions and resources. He sends written resource immediately. I always feel like he is I'm in awe.

Anonymous 11/10/2025
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Procedures & Services

Procedures & Treatments Offered

    Commonly Prescribed Medications

    Brian Sebastian, MD has not yet listed the medications that he commonly prescribes.

    Accepted Insurance

    Accepted Insurance

    Brian Sebastian, MD has not yet specified the insurance plans he accepts.
     

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