Henri Masse, GNP
NPI 1235209636 · Gerontology Nurse Practitioner · Santa Rosa, CA
Henri Masse, GNP is a Gerontology Nurse Practitioner provider in Santa Rosa, CA (NPI 1235209636).
Provider details
- NPI number
- 1235209636
- Entity type
- Individual
- Primary specialty
- Gerontology Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- GNP
- Sex
- Male
- Sole proprietor
- No
- License
- 5023 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2006-11-09
- Last updated
- 2007-07-08
Frequently asked questions
- What is Henri Masse's NPI number?
- Henri Masse's National Provider Identifier (NPI) is 1235209636, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Henri Masse's specialty?
- Henri Masse is listed in the NPPES registry with a primary specialty of Gerontology Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Henri Masse located?
- Henri Masse's practice location on file with NPPES is 3554 Round Barn Blvd Ste 108, Santa Rosa, CA 95403-0930.
- What is Henri Masse's phone number?
- The practice phone number listed in the NPPES registry for Henri Masse is (707) 571-3872.
- Is Henri Masse's NPI active?
- Yes — Henri Masse's NPI (1235209636) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.