Katherine Duffy
Clinical Social Worker · Valhalla, NY
Katherine Duffy is a clinical social worker with a practice address in Valhalla, New York, and NPI 1952726184, issued on Feb 25, 2014. Check the license (New York 009775, as entered in NPPES) with the New York board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Katherine Duffy
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 009775 NY
Self-reported in NPPES; status is on the state search - Practice location
- 25 Operations Dr, Valhalla, NY 10595
- Phone
- (914) 345-5900
- Enumerated
- Feb 25, 2014
- Entity
- Type 1 · individual
Also registered at 25 Operations Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Milder Belalcazar, LMSWSocial Worker1275774895
- Alfredo Garcia, CSWRSocial Worker1548306061
- Ann Palm Reibel, LCSW-RSocial Worker1215073713
- Jonathan Robinson, LMSWSocial Worker1457501736
- Hector Rodriguez, LCSWClinical Social Worker1457597981
- Kelly Turner, LCSWClinical Social Worker1770962938
Verify Katherine Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 009775Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
25 clinical social worker records list a Valhalla practice address
They are 25 of the 2,105 NPPES records with a Valhalla practice address, and 26,930 clinical social worker records in New York. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 25 in Valhalla → All 26,930 in New York → Every provider in Valhalla →
Other clinical social worker records in New York
- Daniel Aaron, LCSW, PH.D.Bronx, NY1922076017
- Leslie Aaron, LCSWNew York, NY1740346683
- Michael Aaron, LMSWNew York, NY1750678868
- Ortal Aaron, BABronx, NY1255413142
- Sharon Aaron, LCSWBinghamton, NY1073521589
- Cindy Aaronson, MSW, PHDNew York, NY1912079799
- Anita Aasen, LCSWVictor, NY1740569581
- Janet Ab EdBrooklyn, NY1033476841
- Julie Abada, LCSWFresh Meadows, NY1942375829
- Daniel AbaiBronx, NY1356046544
Common questions
What is Katherine Duffy's NPI number?
Katherine Duffy's National Provider Identifier (NPI) is 1952726184, issued on Feb 25, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Duffy located?
The NPPES record lists a practice address at 25 Operations Dr, Valhalla, NY, 10595. Phone: (914) 345-5900. Providers update this record themselves, so call before visiting.
How can I verify Katherine Duffy's license?
NPPES lists New York license number 009775, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.