Louis Walthall, LCSWR, CASAC
Clinical Social Worker · Ronkonkoma, NY
Louis Walthall, LCSWR, CASAC is a clinical social worker with a practice address in Ronkonkoma, New York, and NPI 1558502880, issued on Mar 17, 2009. Check the license (New York 051661, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Louis Walthall
- Credential
- LCSWR, CASAC
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License numbers
- 051661 NY
73 051661 NY
9438 NY
Self-reported in NPPES; status is on the state search - Practice location
- 3281 Veterans Memorial Hwy Ste E14, Ronkonkoma, NY 11779
- Phone
- (631) 471-3122
- Enumerated
- Mar 17, 2009
- Record last updated
- Feb 22, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180404000755); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 29,293 in New York → Look up another NPI →
Verify Louis Walthall 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 051661Check 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
- Nassau Psychology, P.C.Cedarhurst, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Louis Walthall among 29,293 clinical social worker records in New York
Louis Walthall, LCSWR, CASAC 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 2009, is newer than 38% of them.
- NPI issued2009 · 38% of these records are older, 58% newer
- In a Medicare fileYes · 8% of these records are
- In the CMS Doctors and Clinicians fileYes · 17% of these records are
- Graduated1994 · median 2001 among the 5,004 with a school on file
- Record last updated2018 · 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).
31 clinical social worker records list a practice address in Ronkonkoma
They are 31 of the 714 NPPES records with a practice address in Ronkonkoma, and 29,293 clinical social worker records in New York.
All 29,293 in New York → Every provider in Ronkonkoma → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Myrna Chiesa, LCSWRonkonkoma, NY 117791831254200
- Anne-Joan Dower, LCSWRonkonkoma, NY 117791447337308
- Wendy Fleming, LCSWRonkonkoma, NY 117791720034150
- Kathleen Garneau, LCSW, RNRonkonkoma, NY 117791801184429
- Alyssa LanotRonkonkoma, NY 117791427389022
- Elizabeth Lee, LCSWRonkonkoma, NY 117791336380260
- Christine Marx-GermanoRonkonkoma, NY 117791871642751
- Ruth Meyer, LCSW-R, CASACRonkonkoma, NY 117791528380136
Common questions
What is Louis Walthall, LCSWR, CASAC's NPI number?
Louis Walthall, LCSWR, CASAC's National Provider Identifier (NPI) is 1558502880, issued on Mar 17, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Louis Walthall, LCSWR, CASAC located?
The NPPES record lists a practice address at 3281 Veterans Memorial Hwy Ste E14, Ronkonkoma, NY, 11779. Phone: (631) 471-3122. Providers update this record themselves, so call before visiting.
How can I verify Louis Walthall, LCSWR, CASAC's license?
NPPES lists New York license number 051661, 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.