IndividualActive
Katherine Duffy
NPI 1952726184 · Clinical Social Worker · Valhalla, NY
Katherine Duffy is a Clinical Social Worker provider in Valhalla, NY (NPI 1952726184).
Provider details
- NPI number
- 1952726184
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 009775 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(81/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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
25 Operations Dr
Valhalla, NY 10595-1586
Phone: (914) 345-5900
Street-level locationGet directions
Mailing address
580 White Plains Rd Ste 510
Tarrytown, NY 10591-5152
Additional practice locations (1)
- 360 Massachusetts AveSuite 201Acton, MA 01720Phone: (978) 935-8832
Registry dates
- Enumerated
- 2014-02-25
- Last updated
- 2020-06-24
- Certified
- 2020-06-24
Frequently asked questions
- What is Katherine Duffy's NPI number?
- Katherine Duffy's National Provider Identifier (NPI) is 1952726184, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Duffy's specialty?
- Katherine Duffy is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Katherine Duffy located?
- Katherine Duffy's practice location on file with NPPES is 25 Operations Dr, Valhalla, NY 10595-1586.
- What is Katherine Duffy's phone number?
- The practice phone number listed in the NPPES registry for Katherine Duffy is (914) 345-5900.
- Is Katherine Duffy's NPI active?
- Yes — Katherine Duffy's NPI (1952726184) is active in the NPPES registry as of the last update on 2020-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.