Marina Stiefvater, MS
NPI 1891006193 · Marriage & Family Therapist · Sonoma, CA
Marina Stiefvater, MS is a Marriage & Family Therapist provider in Sonoma, CA (NPI 1891006193).
Provider details
- NPI number
- 1891006193
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MS
- Sex
- Female
- Sole proprietor
- No
- License
- 52047 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
15 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
- 2010-07-01
- Last updated
- 2012-12-17
Frequently asked questions
- What is Marina Stiefvater's NPI number?
- Marina Stiefvater's National Provider Identifier (NPI) is 1891006193, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marina Stiefvater's specialty?
- Marina Stiefvater is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Marina Stiefvater located?
- Marina Stiefvater's practice location on file with NPPES is 1055 Broadway Ste D, Sonoma, CA 95476-7467.
- What is Marina Stiefvater's phone number?
- The practice phone number listed in the NPPES registry for Marina Stiefvater is (707) 996-7991.
- Is Marina Stiefvater's NPI active?
- Yes — Marina Stiefvater's NPI (1891006193) is active in the NPPES registry as of the last update on 2012-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.