Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Erin Claudia Graff
Social Worker in Denver, CO · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1912423906
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Registry record
Entity type Individual (Type 1)
Name Erin Claudia Graff
Sex Female
Practice address 1355 S Colorado Blvd Ste 100, Denver, CO, 80222
Phone (303) 756-9052
Enumeration date Aug 21, 2017
Last updated in NPPES Aug 21, 2017
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 Erin Graff?
The National Provider Identifier (NPI) for Erin Graff is 1912423906, a Type 1 (individual) record in the CMS NPPES registry.
Where does Erin Graff practice?
The practice location on file with NPPES is in Denver, CO. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Hazel Melmed Clinical Social Worker · Denver, CO NPI 1972642148 Sandra Mann Psychologist · Denver, CO NPI 1508014267 Kimberly Stromgren Professional Counselor · Denver, CO NPI 1437436730 Katharine Trewartha Clinical Social Worker · Denver, CO NPI 1487176350 Alison Abernathy Social Worker · Denver, CO NPI 1700405495 Taija Sites Clinical Social Worker · Denver, CO NPI 1689298465 Deborah Blumenthal Clinical Social Worker · Denver, CO NPI 1336767318 Maria Martinez Hernandez Counselor · Denver, CO NPI 1629714001
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-08-21.