Suggest an Edit Name* Categories* Doctor Hospital Pharmacy Add category State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 09:00 am — 05:00 pm Tuesday: 09:00 am — 05:00 pm Wednesday: 09:00 am — 05:00 pm Thursday: 09:00 am — 05:00 pm Friday: 09:00 am — 05:00 pm Saturday: 09:00 am — 03:00 pm Company description Dr. Gregory Hahn located in the city of Alamo, state California. The legal address of the Doctor 1505 St. Alphonsus Way. Directions to the Doctor Dr. Gregory Hahn can be found on our interactive map. Ask your questions by calling (925) 838-7337 on workdays.</br></br></br>NPI number: 1891739819</br>Provider's gender: Male</br>Practice names: John Muir Health - Alamo Pediatrics</br>Board certifications: American Board of Pediatrics Your comments (not for publishing) * — Required information Dr. Gregory Hahn - Alamo ← View details 1505 St. Alphonsus Way, California, Alamo, 94507, Alamo, California 94507 (925) 838-7337