Fernando Zalduondo, MD
NPI 1457383259 · Diagnostic Radiology Physician · Guaynabo, PR
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Fernando Zalduondo, MD is a Diagnostic Radiology Physician provider in Guaynabo, PR (NPI 1457383259).
Provider details
- NPI number
- 1457383259
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 12263 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
562 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Mri Scan of Brain Without Contrast70551 | 78 | $209 |
| Mri Scan of Brain Before and After Contrast70553 | 69 | $336 |
| Ultrasound Scan of Head and Neck Soft Tissue76536 | 53 | $115 |
| Ct Scan of Chest Without Contrast71250 | 45 | $136 |
| Mri Scan of Lower Spinal Canal Without Contrast72148 | 38 | $199 |
| Mri Scan of Pelvis Before and After Contrast72197 | 32 | $358 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 64 | 61 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-06
- Last updated
- 2012-10-03
Frequently asked questions
- What is Fernando Zalduondo's NPI number?
- Fernando Zalduondo's National Provider Identifier (NPI) is 1457383259, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fernando Zalduondo's specialty?
- Fernando Zalduondo is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Fernando Zalduondo located?
- Fernando Zalduondo's practice location on file with NPPES is 280 Ave Marginal Kennedy, Guaynabo, PR 00968-1746.
- What is Fernando Zalduondo's phone number?
- The practice phone number listed in the NPPES registry for Fernando Zalduondo is (787) 620-5757.
- Does Fernando Zalduondo accept Medicare?
- Fernando Zalduondo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Fernando Zalduondo's NPI active?
- Yes — Fernando Zalduondo's NPI (1457383259) is active in the NPPES registry as of the last update on 2012-10-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.