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

Dr. Carmen Lydia Massanet, M.D.

General Practice Physician in San Juan, PR · enumerated 2007.

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

National Provider Identifier

1396860326

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Registry record

Entity type Individual (Type 1)

Name Dr. Carmen Lydia Massanet

Credential M.D.

Sex Female

Practice address San Juan, PR, 00924

Phone (787) 776-7630

Enumeration date Mar 20, 2007

Last updated in NPPES May 13, 2022

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

Taxonomy & licenses

261QC1500X Community Health Clinic/Center Ambulatory Health Care Facilities · License 12377 (PR) Secondary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 12377 (PR) 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
12377	Other	PR	MEDICAL LISENCE

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

What specialty is Carmen Massanet?

Carmen Massanet is registered in NPPES with the primary taxonomy of General Practice Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-13.