Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Ivan G Castillo-Salazar, MD
Ophthalmology Physician in Waco, TX · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1316155443
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Registry record
Entity type Individual (Type 1)
Name Dr. Ivan G Castillo-Salazar
Credential MD
Sex Male
Practice address 7030 New Sanger Rd Ste 102, Waco, TX, 76712
Phone (254) 753-7007
Fax (254) 753-5225
Enumeration date May 21, 2007
Last updated in NPPES Jul 21, 2022
Taxonomy & licenses
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.
Frequently asked questions
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.
What specialty is Ivan Castillo-Salazar?
Ivan Castillo-Salazar is registered in NPPES with the primary taxonomy of Ophthalmology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.