Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Andrew Chau
Social Worker in Rockville, MD · enumerated 2025.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831984897
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Registry record
Entity type Individual (Type 1)
Name Andrew Chau
Sex Male
Practice address 200 Wood Hill Rd, Rockville, MD, 20850
Phone (240) 800-5772
Fax (301) 468-1862
Enumeration date Apr 10, 2025
Last updated in NPPES Sep 18, 2025
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
Where does Andrew Chau practice?
The practice location on file with NPPES is in Rockville, MD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Andrew Chau?
The National Provider Identifier (NPI) for Andrew Chau is 1831984897, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Jennifer Udler Social Worker · Rockville, MD NPI 1528070836 Lizabeth Katz Social Worker · Rockville, MD NPI 1942212253 Zachary Lehman Social Worker · Rockville, MD NPI 1356353668 Heidi Cohen Social Worker · Rockville, MD NPI 1326050642 Jennifer Firestone Social Worker · Rockville, MD NPI 1184636409 Deborah Goldstein Social Worker · Rockville, MD NPI 1184636417 Laurence Fabre-Welmond Social Worker · Rockville, MD NPI 1215949516 Lori Kolle Social Worker · Rockville, MD NPI 1194737494
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-18.