Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Ronald G. Jan, MD Inc

Organization Surgical Oncology Physician · NPI 1982129961

Ronald G. Jan, MD Inc provides Surgical Oncology Physician services in Sacramento, California. Licensed in California. Registered with an NPI since 2017.

Licensed in
CA
In the registry since
2017
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

5025 J St Ste #312
Sacramento, CA 95819
Phone: (916) 288-0055
Fax: (916) 288-0056
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgical Oncology Physician (primary) Taxonomy 2086X0206X · Licence G22975 (CA)

Record details

NPI number1982129961
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Ronald Jan — President · (916) 288-0055
NPI enumeratedAugust 10, 2017
Last updated in NPPESAugust 10, 2017
Mailing address5025 J St, Suite #312, Sacramento, CA 95819

Other providers in Sacramento