Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ronald J Gailun, MD

Ophthalmology Physician in Springfield, MA · enumerated 2005.

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

National Provider Identifier

1104811769

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Registry record

Entity type Individual (Type 1)

Name Dr. Ronald J Gailun

Credential MD

Sex Male

Practice address 3640 Main St, Ste 201, Springfield, MA, 01107

Phone (413) 732-2333

Fax (413) 732-8065

Enumeration date Sep 20, 2005

Last updated in NPPES Mar 9, 2016

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 45758 (MA) 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
608602	Other	-	US HEALTHCARE
737950	Other	-	CONNECTICARE
0140244	Medicaid	MA	-
12516	Other	-	HEALTH NEW ENG
150656	Other	-	HARVARD PILGRIM
738871	Other	-	TUFTS
N51730	Other	-	BCBS MASS

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 1104811769 active?

Yes, as of the latest NPPES snapshot, NPI 1104811769 is active (record last updated 2016-03-09).

How do I verify Ronald Gailun's NPI record?

Cross-check NPI 1104811769 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-09.