Jeffrey Singerman, M.D.
Practice: Unio Specialty Care
Specialty: Gastroenterology
Office locations: Castro Valley, Hayward
Jeffrey Singerman, MD, is board-certified by the American Board of Internal Medicine in Gastroenterology and fellowship-trained in Gastroenterology. He earned his medical degree from the George Washington University School of Medicine and Health Sciences, completed his Internal Medicine residency at the University of North Carolina Hospitals, and completed his fellowship at Yale-New Haven Medical Center.
Jeffrey Singerman, MD, is board-certified by the American Board of Internal Medicine in Gastroenterology and fellowship-trained in Gastroenterology. He earned his medical degree from the George Washington University School of Medicine and Health Sciences, completed his Internal Medicine residency at the University of North Carolina Hospitals, and completed his fellowship at Yale-New Haven Medical Center.
GI-Castro Valley
Suite 104
Castro Valley, CA 94546
GI-Hayward
Suite 212
Hayward, CA 94545
Dr. Jeffrey Singerman is a board-certified gastroenterologist with more than 20 years of experience providing comprehensive digestive healthcare. Based in Castro Valley, California, he specializes in advanced endoscopic procedures and the prevention, diagnosis, and treatment of a wide range of gastrointestinal conditions, including colorectal cancer screening, GERD, inflammatory bowel disease, and liver disorders.
Dr. Singerman earned his medical degree from the George Washington University School of Medicine and Health Sciences. He completed his residency in Internal Medicine at the University of North Carolina Hospitals and his fellowship in Gastroenterology at Yale-New Haven Medical Center. He is board-certified in Gastroenterology by the American Board of Internal Medicine and is affiliated with Eden Medical Center, St. Rose Hospital, and Bay Area Endoscopy Center–Castro Valley.
In addition to his clinical practice, Dr. Singerman has contributed to medical research through peer-reviewed publications. He is committed to providing personalized, evidence-based care and helping patients achieve long-term digestive health.
CERTIFICATIONS AND LICENSURE
American Board of Internal Medicine – Gastroenterology
California State Medical License
Connecticut State Medical License
North Carolina State Medical License

Great Dr. Explained and answered my questions always, and his staff are friendly.
Everything went so smooth, did not feel a thing.
Very quiet dr.thanks.
Excellent doctor. Very understanding and really cares about your concerns. Explains everything in details. I would recommend him.
Excellent for a good service of the staff and the Doctor,thank you very much 👍👍👍
Dr. Singerman is very personable as well as thorough. I felt comfortable during my visit.
Love his professionalism
Dr.SINGERMAN covers any and all the medical issues I’m having answering all my questions. He always has concerns about my health.and is always in a good mood.
Friendly and caring, Dr Singerman is aware of my other health concerns and takes them into consideration when addressing my GI issues. He is intelligent and listens to what I have to say, so I always feel I've gotten the best advice when my visit is done.
Very good Doctor at what he does. Very gentleman and makes sure you understand the procedures to follow according with your health problems