Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark Hann
Counselor in Greenfield, OH · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1770458432
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Mark Hann
Sex Male
Practice address 910 South St, Greenfield, OH, 45123
Phone (877) 997-3224
Enumeration date Oct 10, 2025
Last updated in NPPES Oct 10, 2025
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 Hann?
The National Provider Identifier (NPI) for Mark Hann is 1770458432, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Hann practice?
The practice location on file with NPPES is in Greenfield, OH. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Leslie Stegall Psychiatric/Mental Health Nurse Practitioner · Greenfield, OH NPI 1356875397 Braun Lowery Addiction (Substance Use Disorder) Counselor · Greenfield, OH NPI 1083114474 North Creek LLC General Practice Physician · Greenfield, OH NPI 1457858797 Reach for Tomorrow Inc General Practice Physician · Greenfield, OH NPI 1679062145 Braydan Shelton Social Worker · Greenfield, OH NPI 1962090092 Reach for Tomorrow Inc Substance Use Disorder Rehabilitation Clinic/Center · Greenfield, OH NPI 1417625518 Reach for Tomorrow Inc Mental Health Clinic/Center (Including Community Mental Health Center) · Greenfield, OH NPI 1134897234 Stephanie Roe Addiction (Substance Use Disorder) Counselor · Greenfield, OH NPI 1730850710
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-10.