Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ana Mercedes Roca Mattei, M.D.

Internal Medicine Physician in Holyoke, MA · enumerated 2008.

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

National Provider Identifier

1144485145

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Registry record

Entity type Individual (Type 1)

Name Ana Mercedes Roca Mattei

Credential M.D.

Sex Female

Practice address 2 Hospital Dr., Suite 101 Western Mass Physician Associ, D/B/A: Holyoke Associaties in Internal Medicine, Holyoke, MA, 01040

Phone (413) 536-8924

Fax (413) 532-9141

Enumeration date Jul 20, 2008

Last updated in NPPES Feb 14, 2014

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 252723 (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
110094126A	Medicaid	MA	-

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 1144485145 active?

Yes, as of the latest NPPES snapshot, NPI 1144485145 is active (record last updated 2014-02-14).

How do I verify Ana Roca Mattei's NPI record?

Cross-check NPI 1144485145 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-02-14.