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

Dr. Carlos E Perez Semidei, M.D.

General Practice Physician in Toa Alta, PR · enumerated 2006.

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

National Provider Identifier

1750350864

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Registry record

Entity type Individual (Type 1)

Name Dr. Carlos E Perez Semidei

Credential M.D.

Sex Male

Practice address Toa Alta, PR, 00953

Phone (787) 870-6893

Fax (787) 870-6893

Enumeration date Mar 14, 2006

Last updated in NPPES Oct 10, 2012

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

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 11183 (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
EL111A	Other	PR	PTAN

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 is the NPI number for Carlos Perez Semidei?

The National Provider Identifier (NPI) for Carlos Perez Semidei is 1750350864, a Type 1 (individual) record in the CMS NPPES registry.

Where does Carlos Perez Semidei practice?

The practice location on file with NPPES is in Toa Alta, PR. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-10.