Fernando Zalduondo, MD
Diagnostic Radiology Physician · Guaynabo, PR
Fernando Zalduondo, MD is a diagnostic radiology physician with a practice address in Guaynabo, Puerto Rico, and NPI 1457383259, issued on Jul 6, 2006. Check the license (Puerto Rico 12263, as entered in NPPES) with the Puerto Rico board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Fernando Zalduondo
- Credential
- MD
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- 12263 PR
Self-reported in NPPES; status is on the state search - Practice location
- 280 Ave Marginal Kennedy, Guaynabo, PR 00968
- Phone
- (787) 620-5757
- Enumerated
- Jul 6, 2006
- Record last updated
- Oct 3, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (787) 905-7921
- Medicare enrollment
- Enrolled (PECOS I20050512000210); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 1989
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 210 in Puerto Rico → Look up another NPI →
Also registered at 280 Ave Marginal Kennedy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Vivian Rivera, MDDiagnostic Radiology Physician1437104957
Verify Fernando Zalduondo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Puerto Rico board licenses this profession
Search for license 12263Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% more Medicare Part D claims than the average diagnostic radiology physician in 2024
66 Medicare Part D claims for 61 beneficiaries, against an average of 51 among the 2,711 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Prednisone64 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- San Patricio Mri And CT Center, P.s.c.Guaynabo, PR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Fernando Zalduondo among 210 diagnostic radiology physician records in Puerto Rico
Fernando Zalduondo, MD is one of 210 diagnostic radiology physician records with a practice address in Puerto Rico. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 48% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1989 · median 1996 among the 148 with a school on file
- Record last updated2012 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Puerto Rico practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in Puerto Rico
There are 210 diagnostic radiology physician records in Puerto Rico.
All 210 in Puerto Rico → Every provider in Guaynabo → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Vivian Rivera, MDGuaynabo, PR 009681437104957
- Armando Bonnet-Mercier, M.D.Guaynabo, PR 009691881671519
- Irma Colon, MDGuaynabo, PR 009691104919273
- Horacio Colon Esteva, M.D.Guaynabo, PR 009691558470187
- Alejandro Lopez Araujo, M.D.Guaynabo, PR 009691063794428
- Javier OliverGuaynabo, PR 009691972692853
- Alejandra Ramirez-ColomGuaynabo, PR 009691083146088
- Paola Tabaro Pico, MDGuaynabo, PR 009691730668385
Common questions
What is Fernando Zalduondo, MD's NPI number?
Fernando Zalduondo, MD's National Provider Identifier (NPI) is 1457383259, issued on Jul 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Fernando Zalduondo, MD located?
The NPPES record lists a practice address at 280 Ave Marginal Kennedy, Guaynabo, PR, 00968. Phone: (787) 620-5757. Providers update this record themselves, so call before visiting.
How can I verify Fernando Zalduondo, MD's license?
NPPES lists Puerto Rico license number 12263, as entered by the provider. Search the Puerto Rico board that licenses this profession; the NPPES record confirms identity only.
How much does Fernando Zalduondo, MD prescribe under Medicare Part D?
In 2024, Fernando Zalduondo, MD had 66 Medicare Part D claims for 61 beneficiaries; the average among diagnostic radiology physician prescribers was 51. Part D covers Medicare prescriptions only.
What is Fernando Zalduondo, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.