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

Sigve K. Tonstad, MD

Individual provider Internal Medicine Physician · NPI 1043499098

Sigve K. Tonstad, MD is an Internal Medicine Physician in Loma Linda, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

11370 Anderson St
Loma Linda, CA 92354-3450
Phone: (909) 558-2870
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G62012 (CA)

Record details

NPI number1043499098
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 26, 2007
Last updated in NPPESJuly 1, 2008

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