William Vega-Ocasio, M.D.
NPI 1598750317 · Nephrology Physician · Cayey, PR
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Vega-Ocasio, M.D. is a Nephrology Physician provider in Cayey, PR (NPI 1598750317).
Provider details
- NPI number
- 1598750317
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 14673 (PR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 136 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,054 | 231 |
| Empagliflozinbrand: Jardiance | 826 | 149 |
| Rosuvastatin Calcium | 823 | 154 |
| Irbesartan | 699 | 143 |
| Allopurinol | 688 | 140 |
| Dapagliflozin Propanediolbrand: Farxiga | 665 | 125 |
| Famotidine | 636 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$21,857 across 25 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-19
- Last updated
- 2010-01-19
Frequently asked questions
- What is William Vega-Ocasio's NPI number?
- William Vega-Ocasio's National Provider Identifier (NPI) is 1598750317, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Vega-Ocasio's specialty?
- William Vega-Ocasio is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is William Vega-Ocasio located?
- William Vega-Ocasio's practice location on file with NPPES is 4 Calle H Mendoza E, Cayey, PR 00736-3801.
- What is William Vega-Ocasio's phone number?
- The practice phone number listed in the NPPES registry for William Vega-Ocasio is (787) 263-6007.
- Does William Vega-Ocasio accept Medicare?
- William Vega-Ocasio is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Vega-Ocasio's NPI active?
- Yes — William Vega-Ocasio's NPI (1598750317) is active in the NPPES registry as of the last update on 2010-01-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.