Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Maria Del Pilar Zalduondo, MD
Specialist in San Juan, PR · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1003843954
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Registry record
Entity type Individual (Type 1)
Name Dr. Maria Del Pilar Zalduondo
Credential MD
Sex Female
Practice address University Pediatric Hospital, Department of Pediatrics Office 1-A 29 1st Floor, San Juan, PR, 00936
Phone (787) 756-4010
Fax (787) 777-3227
Enumeration date Jun 27, 2006
Last updated in NPPES Jul 8, 2007
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
What is the NPI number for Maria Del Pilar Zalduondo?
The National Provider Identifier (NPI) for Maria Del Pilar Zalduondo is 1003843954, a Type 1 (individual) record in the CMS NPPES registry.
Where does Maria Del Pilar Zalduondo practice?
The practice location on file with NPPES is in San Juan, PR. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Francisco Nieves-Rivera Pediatric Endocrinology Physician · San Juan, PR NPI 1740217124 Myrna Quinones Specialist · San Juan, PR NPI 1003843491 Ivonne Arroyo Pediatric Rheumatology Physician · San Juan, PR NPI 1225065725 Thea Calderon Pediatrics Physician · San Juan, PR NPI 1598792061 Irma Febo Specialist · San Juan, PR NPI 1285661769 Jessica Rios Specialist · San Juan, PR NPI 1841228749 Maria Quintero Pediatrics Physician · San Juan, PR NPI 1912935024 Yasmin Pedrogo Pediatrics Physician · San Juan, PR NPI 1184652901
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.