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

Dr. Thomas C Giannulli, MS

Individual provider Internal Medicine Physician · NPI 1861637027

Dr. Thomas C Giannulli, MS is an Internal Medicine Physician in Westlake Village, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2008
What do these letters mean?
MS — Master of Science
A graduate science degree.

See every abbreviation used in this directory →

Practice location Address checks out

4195 E Thousand Oaks Blvd Ste 135
Westlake Village, CA 91362-7233
Phone: (805) 504-2813
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence C52458 (CA)

Record details

NPI number1861637027
Entity typeIndividual (Type 1)
GenderMale
Credentials MS
Sole proprietorYes
NPI enumeratedDecember 2, 2008
Last updated in NPPESDecember 2, 2008

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