Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ann York Kao, MD

Q: What is the NPI number for Ann Kao?

The National Provider Identifier (NPI) for Ann Kao is 1588643282, a Type 1 (individual) record in the CMS NPPES registry.

Internal Medicine Physician in Chelsea, MA · enumerated 2006.

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

National Provider Identifier

1588643282

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Registry record

Entity type Individual (Type 1)

Name Dr. Ann York Kao

Credential MD

Sex Female

Practice address 151 Everett Ave C51, Chelsea Healthcare Center-Urgent Care, Chelsea, MA, 02150

Phone (617) 884-8302

Fax (617) 887-3704

Enumeration date Jan 11, 2006

Last updated in NPPES Aug 3, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 220229 (MA) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 220229 (MA) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
2070791	Medicaid	MA	-
369355	Other	MA	TUFTS HEALTH PLAN
J27655	Other	MA	BCBS OF MA

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 is the NPI number for Ann Kao?

The National Provider Identifier (NPI) for Ann Kao is 1588643282, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ann Kao practice?

The practice location on file with NPPES is in Chelsea, MA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-08-03.