Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Fernando Zalduondo, MD

Individual provider Specialist · NPI 1457383259

Fernando Zalduondo, MD practises Diagnostic Radiology in Guaynabo, Puerto Rico. Graduated from Columbia University College of Physicians and Surgeons in 1989, 37 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Puerto Rico.

Years since qualifying
37
Trained at
Columbia University College of Physicians and Surgeons
Licensed in
PR
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address may be wrong

The ZIP code does not match the city and state on this record. Call before visiting.

280 Ave Marginal Kennedy
Guaynabo, PR 00968-1746 Not confirmed with CMS for 14 years — call before visiting
Phone: (787) 620-5757
Fax: (787) 905-7921

No coordinates on file. Search this address in Google Maps

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 12263 (PR)
Specialist Taxonomy 174400000X · Licence 12263 (PR)

Record details

NPI number1457383259
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 6, 2006
Last updated in NPPESOctober 3, 2012

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolCOLUMBIA UNIVERSITY COLLEGE OF PHYSICIANS AND SURGEONS
Graduated 1989 (37 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients490
Services billed 11,094 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Other providers in Guaynabo