Gwyn Sondike
Clinical Social Worker · Mendham, NJ
Gwyn Sondike is a clinical social worker with a practice address in Mendham, New Jersey, and NPI 1679901029, issued on Oct 23, 2013. Check the license (New Jersey 44SC05688800, as entered in NPPES) with the New Jersey board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gwyn Sondike
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License numbers
- 44SC05688800 NJ
37LC00252400 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 80 W Main St, Mendham, NJ 07945
- Phone
- (973) 543-5656
- Enumerated
- Oct 23, 2013
- Record last updated
- May 25, 2023
- Fax
- (973) 543-1361
- Medicare enrollment
- Enrolled (PECOS I20170731000398); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 9,790 in New Jersey → Look up another NPI →
Also registered at 80 W Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tyler ArtressAddiction (Substance Use Disorder) Counselor1093175598
- David AugustAddiction (Substance Use Disorder) Counselor1669707485
- Eric BakerBehavior Analyst1942638614
- Rosemarie Best, MSAddiction (Substance Use Disorder) Counselor1750429874
- Niah Bonanno, B.A.Addiction (Substance Use Disorder) Counselor1497925549
- Julia BucciniBehavior Analyst1609152446
Verify Gwyn Sondike in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New Jersey board licenses this profession
Search for license 44SC05688800Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Neuropsychology And Counseling Associates, LLCBrick, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gwyn Sondike among 9,790 clinical social worker records in New Jersey
Gwyn Sondike is one of 9,790 clinical social worker records with a practice address in New Jersey. 12% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 41% of them.
- NPI issued2013 · 41% of these records are older, 54% newer
- In a Medicare fileYes · 12% of these records are
- In the CMS Doctors and Clinicians fileYes · 22% of these records are
- Graduated2011 · median 2006 among the 2,147 with a school on file
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 clinical social worker records list a practice address in Mendham
They are 10 of the 189 NPPES records with a practice address in Mendham, and 9,790 clinical social worker records in New Jersey.
All 9,790 in New Jersey → Every provider in Mendham → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Karen Bendig, LCSWMendham, NJ 079451083299119
- Michelle Juhasz, LCSWMendham, NJ 079451518091040
- Ruth Mumford, LCSWMendham, NJ 079451902964158
- Kristen Murphy, L.C.S.W.Mendham, NJ 079451235382870
- Kathleen Perez-GarrityMendham, NJ 079451861863474
- Lisa Picciuti, LCSWMendham, NJ 079451396050480
- Frances Ruzis, LCSWMendham, NJ 079451114365020
- Peggy Waller, LCSW, LCADCMendham, NJ 079451821369562
Common questions
What is Gwyn Sondike's NPI number?
Gwyn Sondike's National Provider Identifier (NPI) is 1679901029, issued on Oct 23, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Gwyn Sondike located?
The NPPES record lists a practice address at 80 W Main St, Mendham, NJ, 07945. Phone: (973) 543-5656. Providers update this record themselves, so call before visiting.
How can I verify Gwyn Sondike's license?
NPPES lists New Jersey license number 44SC05688800, as entered by the provider. Search the New Jersey 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.