Karen Zilberstein
NPI 1265522403 · Clinical Social Worker · Northampton, MA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Zilberstein is a Clinical Social Worker provider in Northampton, MA (NPI 1265522403).
Provider details
- NPI number
- 1265522403
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 107551 (MA)
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
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
- 2006-10-16
- Last updated
- 2022-12-21
- Certified
- 2022-12-21
Frequently asked questions
- What is Karen Zilberstein's NPI number?
- Karen Zilberstein's National Provider Identifier (NPI) is 1265522403, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Zilberstein's specialty?
- Karen Zilberstein is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Karen Zilberstein located?
- Karen Zilberstein's practice location on file with NPPES is 90 Conz St Ste 205, Northampton, MA 01060-3868.
- What is Karen Zilberstein's phone number?
- The practice phone number listed in the NPPES registry for Karen Zilberstein is (413) 626-2802.
- Does Karen Zilberstein accept Medicare?
- Karen Zilberstein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Zilberstein's NPI active?
- Yes — Karen Zilberstein's NPI (1265522403) is active in the NPPES registry as of the last update on 2022-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.