Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Annie Y. Lau, M.D.

Q: What type of organization is Annie Y. Lau, M.D.?

Annie Y. Lau, M.D. is registered in NPPES as a Anesthesiology Physician (its primary provider taxonomy).

Anesthesiology Physician in Sacramento, CA · enumerated 2008 · authorized official Annie Lau, M.D..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1639315955

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Registry record

Entity type Organization (Type 2)

Legal business name Annie Y. Lau, M.D.

Practice address 3315 Watt Ave, Sacramento, CA, 95821

Phone (916) 481-0777

Fax (916) 481-1881

Enumeration date Dec 17, 2008

Last updated in NPPES Feb 9, 2011

Taxonomy & classification

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License A38392 (CA) Primary

Authorized official

Name Annie Lau

Title M.D.

Phone (707) 429-2529

Other identifiers

Identifier	Type	State	Issuer
00A383920	Medicaid	CA	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is Annie Y. Lau, M.D.?

Annie Y. Lau, M.D. is registered in NPPES as a Anesthesiology Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-02-09.