Kirsten Siewert, LMFT
NPI 1487392700 · Marriage & Family Therapist · Tiburon, CA
Kirsten Siewert, LMFT is a Marriage & Family Therapist provider in Tiburon, CA (NPI 1487392700).
Provider details
- NPI number
- 1487392700
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- LMFT
- Sex
- Female
- Sole proprietor
- No
- License
- 149783 (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
4 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
- 2022-05-25
- Last updated
- 2025-09-13
- Certified
- 2025-09-13
Frequently asked questions
- What is Kirsten Siewert's NPI number?
- Kirsten Siewert's National Provider Identifier (NPI) is 1487392700, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kirsten Siewert's specialty?
- Kirsten Siewert is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Kirsten Siewert located?
- Kirsten Siewert's practice location on file with NPPES is 146 Hacienda Dr, Tiburon, CA 94920-1126.
- What is Kirsten Siewert's phone number?
- The practice phone number listed in the NPPES registry for Kirsten Siewert is (916) 599-1562.
- Is Kirsten Siewert's NPI active?
- Yes — Kirsten Siewert's NPI (1487392700) is active in the NPPES registry as of the last update on 2025-09-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.