Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alfonso Castro, MD

Pulmonary Disease Physician in Clearwater, FL · enumerated 2007.

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

National Provider Identifier

1649472069

Verified

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Registry record

Entity type Individual (Type 1)

Name Alfonso Castro

Credential MD

Sex Male

Practice address 430 Morton Plant St, Suite 405, Clearwater, FL, 33756

Phone (727) 443-0611

Fax (727) 461-5493

Enumeration date Jun 5, 2007

Last updated in NPPES May 19, 2026

Taxonomy & licenses

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License ME114750 (FL) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License ME114750 (FL) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 125050954 (IL) Secondary

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
008212000	Medicaid	FL	-
P01287521	Other	FL	RR MEDICARE

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

Where does Alfonso Castro practice?

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

What is the NPI number for Alfonso Castro?

The National Provider Identifier (NPI) for Alfonso Castro is 1649472069, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-19.