Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Alexander Geng Inc

Organization Radiation Oncology Physician · NPI 1992394811

Alexander Geng Inc provides Radiation Oncology Physician services in San Francisco, California. Registered with an NPI since 2021.

In the registry since
2021
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

900 Hyde St
San Francisco, CA 94109-4806
Phone: (415) 353-6420
Fax: (415) 353-6259
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X

Record details

NPI number1992394811
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Alexander Geng — Physician/Owner · (415) 353-6420
NPI enumeratedJanuary 14, 2021
Last updated in NPPESJanuary 14, 2021
Certification dateJanuary 14, 2021
Mailing address450 Glass Ln Ste C, Modesto, CA 95356-9287

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