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Search › California › 1223G0001X

Derek Chang

NPI 1356254981 · on the registry since 2026

Practice

Address
345 W Portal Ave Ste 210
San Francisco, CA 94127
Phone
(415) 681-1011
Organisation at this address
Julia A. Hallisy D.D.S., Inc.
Gregory J. Conte Dmd, Ms, Apdc
Gregory Conte Dmd Ms And Paola Guglielmoni Dds, Ms
Inferred from a shared address, not stated in the registry.
Clinicians at this address
12

Registry record

Primary taxonomy
1223G0001X
1223G0001X
Licence states on file
CA
From the registry's licence fields, which are often incomplete.
Sex
Male
Record last updated
2026-09-25

Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in California