Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Harriet Maria Williams-Sloan, ANP-BC
Nurse Practitioner in Detroit, MI · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1861744849
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Registry record
Entity type Individual (Type 1)
Name Mrs. Harriet Maria Williams-Sloan
Credential ANP-BC
Sex Female
Practice address 18254 Livernois Ave Ste 1, Detroit, MI, 48221
Phone (313) 861-4400
Fax (313) 861-5810
Enumeration date Oct 15, 2012
Last updated in NPPES Oct 15, 2012
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704251759 (MI) 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.
Frequently asked questions
Where does Harriet Williams-Sloan practice?
The practice location on file with NPPES is in Detroit, MI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Harriet Williams-Sloan?
The National Provider Identifier (NPI) for Harriet Williams-Sloan is 1861744849, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-15.