NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Gray Ackerman, D.M.D.

General Practice Dentistry in Greenwood, SC · enumerated 2006 · practices at Steve M. Ackerman and William Gray Ackerman, Ptr.

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

National Provider Identifier

1689637910

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. William Gray Ackerman
Credential D.M.D.
Sex Male
Practice address 342 Calhoun Ave, Greenwood, SC, 29649
Phone (864) 229-7979
Enumeration date Apr 8, 2006
Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 20040 (SC) Primary
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Other identifiers

Identifier Type State Issuer
Z20040 Medicaid SC -

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

How do I verify William Ackerman's NPI record?
Cross-check NPI 1689637910 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1689637910 active?
Yes, as of the latest NPPES snapshot, NPI 1689637910 is active (record last updated 2007-07-09).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.