NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Harry R Diamant, A.C.S.W

Clinical Social Worker in Anderson, SC · enumerated 2007 · practices at Stress Management Center, LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1780725259

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Harry R Diamant
Credential A.C.S.W
Sex Male
Practice address 1115 Dunlap Rd, Anderson, SC, 29621
Phone (864) 225-0792
Fax (864) 226-3968
Enumeration date Feb 9, 2007
Last updated in NPPES Dec 9, 2008

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License LPC719 (SC) Secondary
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 260 (SC) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1780725259 active?
Yes, as of the latest NPPES snapshot, NPI 1780725259 is active (record last updated 2008-12-09).
How do I verify Harry Diamant's NPI record?
Cross-check NPI 1780725259 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-12-09.