Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marvin Diaz-Lacayo, M.D.

Internal Medicine Physician in Dorchester Center, MA · enumerated 2006.

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

National Provider Identifier

1477590214

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Marvin Diaz-Lacayo

Credential M.D.

Sex Male

Practice address 2100 Dorchester Ave, Dorchester Center, MA, 02124

Phone (617) 296-4000

Fax (617) 474-3856

Enumeration date Jun 1, 2006

Last updated in NPPES Oct 19, 2011

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 223423 (MA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Marvin Diaz-Lacayo's NPI record?

Cross-check NPI 1477590214 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1477590214 active?

Yes, as of the latest NPPES snapshot, NPI 1477590214 is active (record last updated 2011-10-19).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-19.