Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ashlyn Aarti Datt
Counselor in San Mateo, CA · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1124257084
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Registry record
Entity type Individual (Type 1)
Name Ashlyn Aarti Datt
Sex Female
Practice address 222 W 39th Ave, San Mateo, CA, 94403
Phone (650) 573-3492
Enumeration date Jul 13, 2009
Last updated in NPPES Jul 13, 2009
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 Ashlyn Datt?
The National Provider Identifier (NPI) for Ashlyn Datt is 1124257084, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ashlyn Datt practice?
The practice location on file with NPPES is in San Mateo, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Diana Jao Geriatric Medicine (Internal Medicine) Physician · San Mateo, CA NPI 1780683789 Katherine Elsley Women's Health Nurse Practitioner · San Mateo, CA NPI 1053388645 San Mateo County Medical Center Clinic/Center · San Mateo, CA NPI 1235172875 County of San Mateo Emergency Medicine Physician · San Mateo, CA NPI 1346271814 Aparna Bhagavat Cardiovascular Disease Physician · San Mateo, CA NPI 1144254806 San Mateo Medical Center Primary Care Clinic/Center · San Mateo, CA NPI 1598781668 County of San Mateo Clinic/Center · San Mateo, CA NPI 1942226014 San Mateo County Medical Center General Acute Care Hospital · San Mateo, CA NPI 1851317929
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-07-13.