Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
David Lewis Tymchyn, L.C.S.W.
Clinical Social Worker in Troy, NY · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1013939552
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Registry record
Entity type Individual (Type 1)
Name David Lewis Tymchyn
Credential L.C.S.W.
Sex Male
Practice address 1801 6th Ave, Troy, NY, 12180
Phone (518) 274-5143
Fax (518) 273-1350
Enumeration date Jul 24, 2006
Last updated in NPPES Dec 7, 2020
Taxonomy & licenses
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 073757 (NY) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy.
About the LCSW credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for David Tymchyn?
The National Provider Identifier (NPI) for David Tymchyn is 1013939552, a Type 1 (individual) record in the CMS NPPES registry.
Where does David Tymchyn practice?
The practice location on file with NPPES is in Troy, NY. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Mohammed Kabir Addiction Medicine (Internal Medicine) Physician · Troy, NY NPI 1326131715 Danielle Lumia Social Worker · Troy, NY NPI 1881774552 Doris Green Addiction (Substance Use Disorder) Counselor · Troy, NY NPI 1023138484 Renae Deangelo Clinical Social Worker · Troy, NY NPI 1487837605 Susan Fitzpatrick Clinical Social Worker · Troy, NY NPI 1649430240 Patricia White Addiction (Substance Use Disorder) Counselor · Troy, NY NPI 1063676799 Susan Hayes Addiction (Substance Use Disorder) Counselor · Troy, NY NPI 1598929234 Lisa Beckett Moir Addiction (Substance Use Disorder) Counselor · Troy, NY NPI 1235393729
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-07.