Nancy Arce-Wallach, ASW
NPI 1003129206 · Social Worker · Berkeley, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Arce-Wallach, ASW is a Social Worker provider in Berkeley, CA (NPI 1003129206).
Provider details
- NPI number
- 1003129206
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- ASW
- Sex
- Female
- Sole proprietor
- Yes
- License
- ASW27507 (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
16 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
- 2010-07-16
- Last updated
- 2022-01-24
- Certified
- 2022-01-24
Frequently asked questions
- What is Nancy Arce-Wallach's NPI number?
- Nancy Arce-Wallach's National Provider Identifier (NPI) is 1003129206, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Arce-Wallach's specialty?
- Nancy Arce-Wallach is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Nancy Arce-Wallach located?
- Nancy Arce-Wallach's practice location on file with NPPES is 2484 Shattuck Ave, Berkeley, CA 94704-2076.
- What is Nancy Arce-Wallach's phone number?
- The practice phone number listed in the NPPES registry for Nancy Arce-Wallach is (510) 704-7475.
- Does Nancy Arce-Wallach accept Medicare?
- Nancy Arce-Wallach is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Arce-Wallach's NPI active?
- Yes — Nancy Arce-Wallach's NPI (1003129206) is active in the NPPES registry as of the last update on 2022-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.