Dr. Ivonne Esther Hernandez Castro, MD
- Part D claims, 2024
- 103
- Hospital affiliations
- 1
- Industry payments
- $4,938
- Medical groups
- 3
- State license
- 1
- Practice address
- 100 Ave Laurel, Bayamon, PR 00956-4816
- Practice phone
- Call (787) 787-5151
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Hospital Universitario Dr. Ramon Ruiz Arnau
Multi-specialty group site · Bayamon, Puerto Rico
Find Dr. Hernandez Castro'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. Ivonne Esther Hernandez Castro is an internist in Puerto Rico
Dr. Hernandez Castro practices at Hospital Universitario Dr. Ramon Ruiz Arnau in Bayamon, Puerto Rico.
Dr. Hernandez Castro's NPI, 1386136059, was assigned on May 30, 2018. Dr. Hernandez Castro holds Puerto Rico license 23-152.
- NPI
- 1386136059NPI Registry (opens in a new tab)
- NPI enumeration date
- May 30, 2018
- NPI status
- Active
- Practice phone
- (787) 787-5151
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ivonne Esther Hernandez Castro practices at Hospital Universitario Dr. Ramon Ruiz Arnau in Bayamon, Puerto Rico
Dr. Hernandez Castro's primary practice is Hospital Universitario Dr. Ramon Ruiz Arnau, at 100 Ave Laurel, Bayamon, PR 00956-4816. The practice phone is (787) 787-5151.
- Hospital Universitario Dr. Ramon Ruiz Arnau100 Ave Laurel, Bayamon, PR 00956-4816Phone(787) 787-5151
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ivonne Esther Hernandez Castro is affiliated with 3 sites of care and 3 medical groups
Dr. Hernandez Castro's primary practice is Hospital Universitario Dr. Ramon Ruiz Arnau in Bayamon, Puerto Rico. Dr. Hernandez Castro is also affiliated with Hospital Pavia Caguas. The medical group on file is Nieves Internal Medicine Health. Dmand AI also links Dr. Hernandez Castro to 2 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Ivonne Esther Hernandez Castro's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hernandez Castro practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hospital Universitario Dr. Ramon Ruiz Arnau | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ivonne Esther Hernandez Castro is one of 805 internists in Puerto Rico
Internal medicine is Dr. Hernandez Castro's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Hernandez Castro is licensed in Puerto Rico.
Specialties and state licenses
- Internal medicine, Puerto RicoPrimary
Internists near Dr. Hernandez Castro
Counts of internists 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. Ivonne Esther Hernandez Castro's patients have a median age of 55
Across all payers, Dmand AI patient panel data puts Dr. Hernandez Castro's median patient age at 55, with 57% women.
Dr. Hernandez Castro's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women57%
- Men43%
Source: Dmand AI Patient Panel Data
Dr. Ivonne Esther Hernandez Castro wrote 103 Medicare Part D claims in 2024
In 2024, Dr. Hernandez Castro wrote 103 Medicare Part D claims for 21 patients. 51% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $126 in total drug cost.
Dr. Hernandez Castro's Part D claims by kind of drug, 2024
- Generic53 claims51%
- Brand-name and other50 claims49%
Dr. Hernandez Castro'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.
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
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Dr. Ivonne Esther Hernandez Castro received $4,938 in industry payments from 2022 to 2025
CMS Open Payments shows 134 general payments to Dr. Hernandez Castro from 27 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 98% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $496.
General payments to Dr. Hernandez Castro by program year, 2022 to 2025
General payments to Dr. Hernandez Castro by kind, 2022 to 2025
- Food and beverage$4,82098%
- Travel and lodging$1182%
Companies that paid Dr. Hernandez Castro the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ivonne Esther Hernandez Castro'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 | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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) |
| 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. Ivonne Esther Hernandez Castro
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. Ivonne Esther Hernandez Castro's NPI number?
Dr. Ivonne Esther Hernandez Castro's NPI number is 1386136059. It was assigned on May 30, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Ivonne Esther Hernandez Castro?
Dr. Ivonne Esther Hernandez Castro is an internist in Puerto Rico. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ivonne Esther Hernandez Castro practice?
Dr. Hernandez Castro practices at 100 Ave Laurel, Bayamon, PR 00956-4816. Dr. Hernandez Castro's primary practice is Hospital Universitario Dr. Ramon Ruiz Arnau in Bayamon, Puerto Rico. Dmand AI also links Dr. Hernandez Castro to 2 medical groups and 1 group practice or clinic.
What is Dr. Ivonne Esther Hernandez Castro's office phone number?
The practice phone on file for Dr. Hernandez Castro is (787) 787-5151.
What is Dr. Ivonne Esther Hernandez Castro's medical license number?
Dr. Hernandez Castro holds Puerto Rico license 23-152.
Which hospitals is Dr. Ivonne Esther Hernandez Castro affiliated with?
Dr. Hernandez Castro is affiliated with Hospital Pavia Caguas.
What medical group is Dr. Ivonne Esther Hernandez Castro part of?
Dr. Hernandez Castro is linked to Nieves Internal Medicine Health. Dmand AI links Dr. Hernandez Castro to 2 more medical groups.
What drugs does Dr. Ivonne Esther Hernandez Castro prescribe most?
In 2024 Medicare Part D data, Dr. Hernandez Castro's most prescribed drugs by claims were Rosuvastatin Calcium.
Has Dr. Ivonne Esther Hernandez Castro received payments from drug or device companies?
CMS Open Payments shows $4,938 in general payments to Dr. Hernandez Castro from 27 companies from 2022 to 2025. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Dr. Ivonne Esther Hernandez Castro been practicing?
Dr. Hernandez Castro's NPI was assigned in 2018.
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