Diane Kristina Witmer, LCSW
Clinical Social Worker · East Islip, NY
Diane Kristina Witmer, LCSW is a clinical social worker with a practice address in East Islip, New York, and NPI 1033771225, issued on Jul 8, 2019. Check the license (New York 088174, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Diane Kristina Witmer
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License numbers
- 088174 NY
7058 TN
0904011127 VA
Self-reported in NPPES; status is on the state search - Practice location
- 56 Marilynn St, East Islip, NY 11730
- Phone
- (631) 338-3913
- Enumerated
- Jul 8, 2019
- Record last updated
- Nov 27, 2023
- Medicare enrollment
- Enrolled (PECOS I20221117000628); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 29,293 in New York → Look up another NPI →
Verify Diane Kristina Witmer 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 088174Check 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 2 group practices
- Coffee County Hospital Group IncManchester, TN
- Ultacare Medical PLLCNew Tazewell, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diane Kristina Witmer among 29,293 clinical social worker records in New York
Diane Kristina Witmer, LCSW is one of 29,293 clinical social worker records with a practice address in New York. 8% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 74% of them.
- NPI issued2019 · 74% of these records are older, 22% newer
- In a Medicare fileYes · 8% of these records are
- In the CMS Doctors and Clinicians fileYes · 17% of these records are
- Graduated2010 · median 2001 among the 5,004 with a school on file
- Record last updated2023 · 65% 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 York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 clinical social worker records list a practice address in East Islip
They are 30 of the 355 NPPES records with a practice address in East Islip, and 29,293 clinical social worker records in New York.
All 29,293 in New York → Every provider in East Islip → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Karen Audia, LCSWEast Islip, NY 117301629134432
- Lorraine Ballou, LCSWEast Islip, NY 117301952513921
- Helene Dellas-Dibona, L.C.S.W.-REast Islip, NY 117301154651768
- Erin Drinkwater, LCSW-REast Islip, NY 117301619197308
- Margaret Fitzgerald-Cowlishaw, LCSWEast Islip, NY 117301972529253
- Karen Kearney, LCSWEast Islip, NY 117301699009241
- Richard Maiorella, LCSWEast Islip, NY 117301659365914
- John Moore, LCSWEast Islip, NY 117301154635076
Common questions
What is Diane Kristina Witmer, LCSW's NPI number?
Diane Kristina Witmer, LCSW's National Provider Identifier (NPI) is 1033771225, issued on Jul 8, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Diane Kristina Witmer, LCSW located?
The NPPES record lists a practice address at 56 Marilynn St, East Islip, NY, 11730. Phone: (631) 338-3913. Providers update this record themselves, so call before visiting.
How can I verify Diane Kristina Witmer, LCSW's license?
NPPES lists New York license number 088174, 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.