Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ellyssa L Eror, MD

Internal Medicine Physician in Wethersfield, CT · enumerated 2005.

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

National Provider Identifier

1477539922

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Registry record

Entity type Individual (Type 1)

Name Dr. Ellyssa L Eror

Credential MD

Sex Female

Practice address 1025 Silas Deane Hwy, Hartford Medical Group, Wethersfield, CT, 06109

Phone (860) 696-2400

Fax (860) 696-2410

Enumeration date Dec 16, 2005

Last updated in NPPES Apr 26, 2010

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 043298 (CT) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 043298 (CT) 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
1477539922	Other	CT	NPI
001432989	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

How do I verify Ellyssa Eror's NPI record?

Cross-check NPI 1477539922 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1477539922 active?

Yes, as of the latest NPPES snapshot, NPI 1477539922 is active (record last updated 2010-04-26).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-04-26.