NPPES file of Aug 9, 2026

Nykke Flaum, LCSW

Social Worker · Valley Stream, NY

Nykke Flaum, LCSW is a social worker with a practice address in Valley Stream, New York, and NPI 1710303441, issued on Mar 5, 2014. Check the license (New York 091095, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1710303441
Name
Nykke Flaum
Credential
LCSW
Primary taxonomy
Social Worker 104100000X
License number
091095 NY
Self-reported in NPPES; status is on the state search
Practice location
938 Crestview Ave, Valley Stream, NY 11581
Phone
(917) 499-9398
Enumerated
Mar 5, 2014
Record last updated
Nov 15, 2023
Medicare enrollment
Enrolled (PECOS I20240605000632); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Nykke Flaum in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich New York board licenses this profession
    Search for license 091095
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the New York license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. North Shore-Lij Medical PCGlen Oaks, NY

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Nykke Flaum among 23,561 social worker records in New York

Nykke Flaum, LCSW is one of 23,561 social worker records with a practice address in New York. 3% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 24% of them.

  • NPI issued2014 · 24% of these records are older, 73% newer
  • In a Medicare fileYes · 3% of these records are
  • In the CMS Doctors and Clinicians fileYes · 5% of these records are
  • Graduated2013 · median 2013 among the 1,177 with a school on file
  • Record last updated2023 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 104100000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

157 social worker records list a practice address in Valley Stream

They are 157 of the 1,948 NPPES records with a practice address in Valley Stream, and 23,561 social worker records in New York.

The 8 social worker records with the nearest ZIP codes

  1. Jong Yuan Chang, LMSWValley Stream, NY 115811588792212
  2. Andrea Cohen, LMSWValley Stream, NY 115811447318795
  3. Beth Friedlander, MSWNorth Woodmere, NY 115811538118922
  4. Aliza HorowitzValley Stream, NY 115811427503358
  5. Tania Jones-Michael, LMSWValley Stream, NY 115811891359238
  6. Alisa Lasky, LMSWValley Stream, NY 115811326359522
  7. Valerie Mardi, MSWValley Stream, NY 115811760095756
  8. Melinda Miller Hilsenrath, LCSWValley Stream, NY 115811992018337

Common questions

What is Nykke Flaum, LCSW's NPI number?

Nykke Flaum, LCSW's National Provider Identifier (NPI) is 1710303441, issued on Mar 5, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Nykke Flaum, LCSW located?

The NPPES record lists a practice address at 938 Crestview Ave, Valley Stream, NY, 11581. Phone: (917) 499-9398. Providers update this record themselves, so call before visiting.

How can I verify Nykke Flaum, LCSW's license?

NPPES lists New York license number 091095, 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), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.