Sigrid Mergenthaler, LICSW
NPI 1477759017 · Clinical Social Worker · San Marcos, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sigrid Mergenthaler, LICSW is a Clinical Social Worker provider in San Marcos, CA (NPI 1477759017).
Provider details
- NPI number
- 1477759017
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LICSW
- Sex
- Female
- Sole proprietor
- No
- License
- 114737 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 400 Washington St303Braintree, MA 02184-4729Phone: (781) 843-3783
Registry dates
- Enumerated
- 2007-06-21
- Last updated
- 2024-08-13
- Certified
- 2024-08-13
Frequently asked questions
- What is Sigrid Mergenthaler's NPI number?
- Sigrid Mergenthaler's National Provider Identifier (NPI) is 1477759017, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sigrid Mergenthaler's specialty?
- Sigrid Mergenthaler is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Sigrid Mergenthaler located?
- Sigrid Mergenthaler's practice location on file with NPPES is 150 Valpreda Rd, San Marcos, CA 92069-2973.
- What is Sigrid Mergenthaler's phone number?
- The practice phone number listed in the NPPES registry for Sigrid Mergenthaler is (760) 736-6767.
- Does Sigrid Mergenthaler accept Medicare?
- Sigrid Mergenthaler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sigrid Mergenthaler's NPI active?
- Yes — Sigrid Mergenthaler's NPI (1477759017) is active in the NPPES registry as of the last update on 2024-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.