Nicholas Harder
NPI 1205480944 · Clinical Social Worker · Williamsburg, MA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Harder is a Clinical Social Worker provider in Williamsburg, MA (NPI 1205480944).
Provider details
- NPI number
- 1205480944
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
- School Social Worker1041S0200X
Behavioral Health & Social Service Providers
- Counselor101Y00000X
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
6 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2019-07-31
- Last updated
- 2026-03-20
- Certified
- 2026-03-20
Frequently asked questions
- What is Nicholas Harder's NPI number?
- Nicholas Harder's National Provider Identifier (NPI) is 1205480944, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Harder's specialty?
- Nicholas Harder is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Nicholas Harder located?
- Nicholas Harder's practice location on file with NPPES is 20 Village Hill Rd, Williamsburg, MA 01096-9706.
- What is Nicholas Harder's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Harder is (917) 805-1498.
- Does Nicholas Harder accept Medicare?
- Nicholas Harder is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Harder's NPI active?
- Yes — Nicholas Harder's NPI (1205480944) is active in the NPPES registry as of the last update on 2026-03-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.