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

Dr. Nels Marcus Thygeson, MD

Individual provider Gastroenterology Physician · NPI 1114189495

Dr. Nels Marcus Thygeson, MD is a Gastroenterology Physician in San Rafael, California. Practices as a sole proprietor. Licensed in California and Minnesota.

Licensed in
CA, MN
In the registry since
2008
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

24 Mooring Rd
San Rafael, CA 94901-3515
Phone: (651) 269-1404
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence G54492 (CA)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 47465 (MN)

Record details

NPI number1114189495
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 27, 2008
Last updated in NPPESMay 31, 2016
Mailing address24 Mooring Rd, San Rafael, CA 94901-3515

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