Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark Drennan
Social Worker in Winfield, WV · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1497516702
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Registry record
Entity type Individual (Type 1)
Name Mark Drennan
Sex Male
Practice address 12086 Winfield Rd, Winfield, WV, 25213
Phone (304) 545-5290
Enumeration date Jan 23, 2024
Last updated in NPPES Jan 23, 2024
Taxonomy & licenses
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 Mark Drennan?
The National Provider Identifier (NPI) for Mark Drennan is 1497516702, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Drennan practice?
The practice location on file with NPPES is in Winfield, WV. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Estebania Llado-Frazer Case Manager/Care Coordinator · Winfield, WV NPI 1730250507 April Evans Case Manager/Care Coordinator · Winfield, WV NPI 1013511096 Michelle Hanchosky Case Manager/Care Coordinator · Winfield, WV NPI 1912598335 Benjamin Halley Case Manager/Care Coordinator · Winfield, WV NPI 1679292361 Zachry Miller Case Manager/Care Coordinator · Winfield, WV NPI 1003530684 Amber Houser Case Manager/Care Coordinator · Winfield, WV NPI 1023732229 Terrica Maxwell Social Worker · Winfield, WV NPI 1245955178 Mackenzie Reffitt Social Worker · Winfield, WV NPI 1265132641
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-23.