Mark L. Henderson, LCSW
Clinical Social Worker · Poughkeepsie, NY
Mark L. Henderson, LCSW is a clinical social worker with a practice address in Poughkeepsie, New York, and NPI 1083606826, issued on Aug 18, 2005. Check the license (New York PR026381-1, 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
- Mark L. Henderson
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- PR026381-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 29 N Hamilton St, Poughkeepsie, NY 12601
- Phone
- (845) 452-1110
- Enumerated
- Aug 18, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (845) 452-1119
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 29,293 in New York → Look up another NPI →
Also registered at 29 N Hamilton St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Susan Deane-Miller, LCSW-RClinical Social Worker1538151386
- Sharon Doane, LCSWClinical Social Worker1013200336
- Sarah Dunn, DDSGeneral Practice Dentistry1558541557
Verify Mark L. Henderson 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 PR026381-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mark L. Henderson among 29,293 clinical social worker records in New York
Mark L. Henderson, 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 not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 99% newer
- In a Medicare fileNo · 8% of these records are
- In the CMS Doctors and Clinicians fileNo · 17% of these records are
- Record last updated2026 · 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).
251 clinical social worker records list a practice address in Poughkeepsie
They are 251 of the 3,701 NPPES records with a practice address in Poughkeepsie, and 29,293 clinical social worker records in New York. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 29,293 in New York → Every provider in Poughkeepsie → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Margo Biuso, LMSWPoughkeepsie, NY 126011366434458
- Susan Deane-Miller, LCSW-RPoughkeepsie, NY 126011538151386
- Bartley Ettori, LCSWPoughkeepsie, NY 126011053303099
- Janet Giudice, LCSW-RPoughkeepsie, NY 126011447242201
- Nancy Kanetzky, MSWPoughkeepsie, NY 126011225020126
- Mary Mantilla, LCSWPoughkeepsie, NY 126011609868439
- Patricia Ann Mazzocca, MSWPoughkeepsie, NY 126011659397008
- David McCready, LMSWPoughkeepsie, NY 126011437141280
Common questions
What is Mark L. Henderson, LCSW's NPI number?
Mark L. Henderson, LCSW's National Provider Identifier (NPI) is 1083606826, issued on Aug 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark L. Henderson, LCSW located?
The NPPES record lists a practice address at 29 N Hamilton St, Poughkeepsie, NY, 12601. Phone: (845) 452-1110. Providers update this record themselves, so call before visiting.
How can I verify Mark L. Henderson, LCSW's license?
NPPES lists New York license number PR026381-1, 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. 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.