Medical school: UNIVERSITY OF MINNESOTA MEDICAL SCHOOL
Graduated: 1975
Offers telehealth
NPI: 1508810938
Practice Locations (4)
MATHIAS MASEM MD
80 GRAND AVE, SUITE 600
OAKLAND, CA 946123744
5107630884
UCSF MEDICAL GROUP BUSINESS SERVICES
1600 DIVISADERO ST
SAN FRANCISCO, CA 941153010
4154761000
UNIVERSITY OF CALIFORNIA SAN FRANCISCO
2330 POST ST
SAN FRANCISCO, CA 941153465
4154764029
UCSF MEDICAL GROUP BUSINESS SERVICES
400 PARNASSUS AVE
SAN FRANCISCO, CA 941432202
Source: CMS National Downloadable File, September 2026.