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

Emma Everlyn Tunac Castillo Bercasio, MD

Infectious Disease Physician in Williamsburg, VA · enumerated 2006 · practices at Sentara Medical Group.

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

National Provider Identifier

1083706568

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Registry record

Entity type Individual (Type 1)

Name Emma Everlyn Tunac Castillo Bercasio

Credential MD

Sex Female

Practice address Williamsburg, VA, 23188

Phone (757) 345-4655

Fax (757) 390-4892

Enumeration date Sep 29, 2006

Last updated in NPPES Jun 2, 2025

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

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 200100655 (NC) Secondary

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 0101266473 (VA) Primary

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
5900019	Medicaid	NC	-
129XG	Other	NC	BCBS
4213840	Other	NC	CIGNA
P00671694	Other	-	MEDICARE RAILROAD

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.

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Frequently asked questions

How do I verify Emma Castillo Bercasio's NPI record?

Cross-check NPI 1083706568 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1083706568 active?

Yes, as of the latest NPPES snapshot, NPI 1083706568 is active (record last updated 2025-06-02).

Other providers at this practice address

Browse all →

Siham Mahgoub Infectious Disease Physician · Williamsburg, VA NPI 1194834754 Sentara Medical Group Infectious Disease Physician · Williamsburg, VA NPI 1407515869

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-06-02.