Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Maddie Y Hao, MD-PEDIATRICS

Pediatrics Physician in Quincy, MA · enumerated 2006.

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

National Provider Identifier

1861461808

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Registry record

Entity type Individual (Type 1)

Name Dr. Maddie Y Hao

Credential MD-PEDIATRICS

Sex Female

Practice address 435 Hancock St, Quincy, MA, 02171

Phone (617) 745-0280

Fax (617) 745-0288

Enumeration date Mar 14, 2006

Last updated in NPPES Apr 2, 2009

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 158402 (MA) Primary

Other identifiers

Identifier	Type	State	Issuer
0118915	Medicaid	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

How do I verify Maddie Hao's NPI record?

Cross-check NPI 1861461808 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1861461808 active?

Yes, as of the latest NPPES snapshot, NPI 1861461808 is active (record last updated 2009-04-02).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-04-02.