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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Richard N. Lopatin, MD

Specialist in Fairfield, CT · enumerated 2005.

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

National Provider Identifier

1598757403

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Registry record

Entity type Individual (Type 1)
Name Dr. Richard N. Lopatin
Credential MD
Sex Male
Practice address 425 Post Rd, Fairfield, CT, 06824
Phone (203) 292-9000
Fax (203) 292-1700
Enumeration date Aug 17, 2005
Last updated in NPPES Oct 30, 2007

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 020583 (CT) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

Is NPI 1598757403 active?
Yes, as of the latest NPPES snapshot, NPI 1598757403 is active (record last updated 2007-10-30).
How do I verify Richard Lopatin's NPI record?
Cross-check NPI 1598757403 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 2007-10-30.