Dr. William Vega-Ocasio, MD
- Medicare services, 2022
- 25
- Medicare patients, 2024
- 26
- Part D claims, 2024
- 18,769
- Hospital affiliations
- 1
- Industry payments
- $40,902
- Practice address
- 21 Res Turabo Hts, Caguas, PR 00727
- Practice phone
- Call (787) 535-1001
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Hospital San Juan Bautista Medical Center
Caguas, Puerto Rico
Find Dr. Vega-Ocasio's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. William Vega-Ocasio is a nephrologist in Caguas, Puerto Rico
Dr. Vega-Ocasio practices at Hospital San Juan Bautista Medical Center in Caguas, Puerto Rico.
Dr. Vega-Ocasio's NPI, 1598750317, was assigned on September 19, 2005. Dr. Vega-Ocasio holds Puerto Rico license 14673.
- NPI
- 1598750317NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1658302005
- NPI enumeration date
- September 19, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (787) 535-1001
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Vega-Ocasio practices at Hospital San Juan Bautista Medical Center in Caguas, Puerto Rico
Dr. Vega-Ocasio's primary practice is Hospital San Juan Bautista Medical Center, at 21 Res Turabo Hts, Caguas, PR 00727 in Caguas County. The practice phone is (787) 535-1001.
- Hospital San Juan Bautista Medical Center21 Res Turabo Hts, Caguas, PR 00727 · Caguas CountyPhone(787) 535-1001
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William Vega-Ocasio is affiliated with 4 sites of care
Dr. Vega-Ocasio's primary practice is Hospital San Juan Bautista Medical Center in Caguas, Puerto Rico. Dr. Vega-Ocasio is also affiliated with Hospital Menonita Cayey. Dmand AI also links Dr. Vega-Ocasio to 2 more dialysis centers, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Vega-Ocasio's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Vega-Ocasio practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hospital San Juan Bautista Medical Center | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Vega-Ocasio is one of 122 nephrologists in Puerto Rico
Nephrology is Dr. Vega-Ocasio's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Vega-Ocasio is licensed in Puerto Rico.
Specialties and state licenses
- Nephrology, Puerto RicoPrimary
Nephrologists near Dr. Vega-Ocasio
Counts of nephrologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. William Vega-Ocasio billed Medicare for 25 services in 2022
CMS data shows 25 Medicare services from Dr. Vega-Ocasio across 1 procedure code in 2022, all of them office visits, for 26 Medicare patients. Medicare paid $1,666 for them. Every service was in an office.
Dr. Vega-Ocasio's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 292022: 2514%
Dr. Vega-Ocasio compared with the Puerto Rico median for nephrologists, 2022
- Dr. Vega-Ocasio
- Puerto Rico median
- Medicare services
- 25vs 7064% below
- Medicare patients
- 26vs 3628% below
- Part D claims
- 18,257vs 1,56811.6 times
Medians across 124 nephrologists in Puerto Rico with Dmand AI profiles that report each measure.
Dr. Vega-Ocasio's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Vega-Ocasio and other nephrologists in Puerto Rico.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Vega-Ocasio treated 26 Medicare patients in 2024, average age 67
CMS counts 26 Medicare patients who saw Dr. Vega-Ocasio in 2024. The largest group is under 65, with 12 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 58% are also on Medicaid. Their average risk score is 4.63, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Vega-Ocasio's median patient age at 65, with 32% women.
Dr. Vega-Ocasio's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Vega-Ocasio's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes69%
Share of Medicare patients with each condition. A patient can have several.
Dr. Vega-Ocasio's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women32%
- Men68%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Vega-Ocasio wrote 18,769 Medicare Part D claims in 2024
In 2024, Dr. Vega-Ocasio wrote 18,769 Medicare Part D claims for 816 patients. 75% of them were for generic drugs. CMS names the drug for 18,257 of them, across 132 drugs with 11 or more claims each, at $2,221,935 in total drug cost. In 2023, CMS named 16,537 claims across 131 drugs.
Dr. Vega-Ocasio's Part D claims by kind of drug, 2024
- Generic14,125 claims75%
- Brand-name4,331 claims23%
- Other313 claims2%
Dr. Vega-Ocasio's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Vega-Ocasio's Part D claims, 2024
- Antibiotics1%101 of 18,769 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 16,5372024: 18,25710%
Drugs named by CMS: 132 in 2024, 131 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. William Vega-Ocasio takes part in Medicare
Dr. Vega-Ocasio accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. William Vega-Ocasio received $40,902 in industry payments from 2016 to 2025
CMS Open Payments shows 78 general payments to Dr. Vega-Ocasio from 14 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 90% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $28,973.
General payments to Dr. Vega-Ocasio by program year, 2016 to 2025
General payments to Dr. Vega-Ocasio by kind, 2016 to 2025
- Speaker and faculty fees$36,93090%
- Food and beverage$2,7977%
- Travel and lodging$9672%
- Education$2081%
Companies that paid Dr. Vega-Ocasio the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. William Vega-Ocasio's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. William Vega-Ocasio
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William Vega-Ocasio's NPI number?
Dr. William Vega-Ocasio's NPI number is 1598750317. It was assigned on September 19, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. William Vega-Ocasio?
Dr. William Vega-Ocasio is a nephrologist in Caguas, Puerto Rico. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. William Vega-Ocasio practice?
Dr. Vega-Ocasio practices at 21 Res Turabo Hts, Caguas, PR 00727. Dr. Vega-Ocasio's primary practice is Hospital San Juan Bautista Medical Center in Caguas, Puerto Rico. Dmand AI also links Dr. Vega-Ocasio to 2 dialysis centers.
What is Dr. William Vega-Ocasio's office phone number?
The practice phone on file for Dr. Vega-Ocasio is (787) 535-1001.
What is Dr. William Vega-Ocasio's medical license number?
Dr. Vega-Ocasio holds Puerto Rico license 14673.
Which hospitals is Dr. William Vega-Ocasio affiliated with?
Dr. Vega-Ocasio is affiliated with Hospital Menonita Cayey.
Does Dr. William Vega-Ocasio accept Medicare?
Yes. CMS data shows Dr. Vega-Ocasio billed Medicare for 25 services in 2022, and Dr. Vega-Ocasio accepts Medicare assignment.
How many Medicare patients does Dr. William Vega-Ocasio see?
CMS counts 26 Medicare patients who saw Dr. Vega-Ocasio in 2024, with an average age of 67.
What services does Dr. William Vega-Ocasio bill to Medicare?
In 2022, Dr. Vega-Ocasio's most billed Medicare services were office visit, established patient (99213).
What drugs does Dr. William Vega-Ocasio prescribe most?
In 2024 Medicare Part D data, Dr. Vega-Ocasio's most prescribed drugs by claims were Atorvastatin Calcium, Jardiance and Rosuvastatin Calcium.
Has Dr. William Vega-Ocasio received payments from drug or device companies?
CMS Open Payments shows $40,902 in general payments to Dr. Vega-Ocasio from 14 companies from 2016 to 2025. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Dr. William Vega-Ocasio been practicing?
Dr. Vega-Ocasio graduated from medical school in 1998, 28 years ago.
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