Thomas Giannulli, MS, MS
NPI 1861637027 · Internal Medicine Physician · Westlake Village, CA
Thomas Giannulli, MS, MS is a Internal Medicine Physician provider in Westlake Village, CA (NPI 1861637027).
Provider details
- NPI number
- 1861637027
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MS, MS
- Sex
- Male
- Sole proprietor
- Yes
- License
- C52458 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-12-02
- Last updated
- 2008-12-02
Frequently asked questions
- What is Thomas Giannulli's NPI number?
- Thomas Giannulli's National Provider Identifier (NPI) is 1861637027, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Giannulli's specialty?
- Thomas Giannulli is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Thomas Giannulli located?
- Thomas Giannulli's practice location on file with NPPES is 4195 E Thousand Oaks Blvd Ste 135, Westlake Village, CA 91362-7233.
- What is Thomas Giannulli's phone number?
- The practice phone number listed in the NPPES registry for Thomas Giannulli is (805) 504-2813.
- Is Thomas Giannulli's NPI active?
- Yes — Thomas Giannulli's NPI (1861637027) is active in the NPPES registry as of the last update on 2008-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.