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

Dr. Mary Elizabeth Eslick, M.D.

Allergy & Immunology Physician in Norwich, CT · enumerated 2006 · practices at Mary E. Eslick.

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

National Provider Identifier

1689698094

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Registry record

Entity type Individual (Type 1)

Name Dr. Mary Elizabeth Eslick

Credential M.D.

Sex Female

Practice address Norwich, CT, 06360

Phone (860) 889-1351

Fax (860) 889-0319

Enumeration date Jul 27, 2006

Last updated in NPPES Sep 11, 2025

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

Taxonomy & licenses

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 031570 (CT) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 031570 (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
030079	Other	CT	HEALTHNET
722145	Other	CT	CONNECTICARE
NLP085	Other	CT	OXFORD
010031570CT01	Other	CT	BLUE CROSS/BLUE SHIELD

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 Mary Eslick's NPI record?

Cross-check NPI 1689698094 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1689698094 active?

Yes, as of the latest NPPES snapshot, NPI 1689698094 is active (record last updated 2025-09-11).

Other providers at this practice address

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Mary E. Eslick Pediatrics Physician · Norwich, CT NPI 1043409741

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.