Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Callie Elizabeth Williams, DNP, AGNP-C
Nurse Practitioner in Towson, MD · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1336022417
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Registry record
Entity type Individual (Type 1)
Name Callie Elizabeth Williams
Credential DNP, AGNP-C
Sex Female
Practice address 6565 N Charles St, Towson, MD, 21204
Phone (443) 849-3400
Enumeration date Jul 28, 2025
Last updated in NPPES Jan 22, 2026
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R242805 (MD) Primary
DNP · Doctor of Nursing Practice: A clinical doctorate for advanced practice nurses.
About the DNP credential
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 Callie Williams practice?
The practice location on file with NPPES is in Towson, MD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Callie Williams?
The National Provider Identifier (NPI) for Callie Williams is 1336022417, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-22.