Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Christine Louise Hamilton-Hall, DMD MD

Oral & Maxillofacial Surgery (D.M.D.) in Darien, CT · enumerated 2006.

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

National Provider Identifier

1891858643

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Registry record

Entity type Individual (Type 1)

Name Dr. Christine Louise Hamilton-Hall

Credential DMD MD

Sex Female

Practice address Darien, CT, 06820

Phone (203) 656-4466

Fax (203) 656-4467

Enumeration date Dec 19, 2006

Last updated in NPPES Jul 12, 2012

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1223S0112X Oral and Maxillofacial Surgery (Dentist) Dental Providers · License 034745 (NY) Secondary

204E00000X Oral & Maxillofacial Surgery (D.M.D.) Allopathic & Osteopathic Physicians · License 044504-1DENTIST (NY) Primary

204E00000X Oral & Maxillofacial Surgery (D.M.D.) Allopathic & Osteopathic Physicians · License 192737-1PHYSICIAN (NY) Secondary

Other identifiers

Identifier	Type	State	Issuer
002081628	Medicaid	CT	-

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

Is NPI 1891858643 active?

Yes, as of the latest NPPES snapshot, NPI 1891858643 is active (record last updated 2012-07-12).

How do I verify Christine Hamilton-Hall's NPI record?

Cross-check NPI 1891858643 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-12.