Sandra Veronica Leyan Castillo
- Medicare patients, 2024
- 13
- Part D claims, 2024
- 140
- Hospital affiliations
- 1
- Industry payments
- $30
- Medical group
- 1
- Practice address
- 55 Fruit Street, Boston, MA 02114
- Practice phone
- Call (617) 726-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Sandra Leyan Castillo'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.
Sandra Veronica Leyan Castillo is a nurse practitioner in Boston, Massachusetts
Sandra Leyan Castillo practices at Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham.
Sandra Leyan Castillo's NPI, 1548922875, was assigned on October 13, 2021. Sandra Leyan Castillo holds Massachusetts license RN2327535.
- NPI
- 1548922875NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9830638717
- NPI enumeration date
- October 13, 2021
- NPI status
- Active
- Practice phone
- (617) 726-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Sandra Veronica Leyan Castillo practices at Massachusetts General Hospital in Boston, Massachusetts
Sandra Leyan Castillo's primary practice is Massachusetts General Hospital, at 55 Fruit Street, Boston, MA 02114 in Suffolk County. The practice phone is (617) 726-2000.
- Massachusetts General Hospital55 Fruit Street, Boston, MA 02114 · Suffolk CountyPhone(617) 726-2000
Source: Dmand AI Affiliation Data
Sandra Veronica Leyan Castillo is affiliated with 3 sites of care and 1 medical group
Sandra Leyan Castillo's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. The medical group on file is North End Waterfront Health (NEW Health). Dmand AI also links Sandra Leyan Castillo to 1 more community health center and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Sandra Veronica Leyan Castillo's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Sandra Leyan Castillo practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Massachusetts General Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Sandra Veronica Leyan Castillo is one of 2,511 nurse practitioners in Massachusetts
Nurse practitioner is Sandra Leyan Castillo's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Sandra Leyan Castillo is licensed in Massachusetts.
Specialties and state licenses
- Nurse practitioner, MassachusettsPrimary
Nurse practitioners near Sandra Leyan Castillo
Counts of nurse practitioners 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
Sandra Veronica Leyan Castillo treated 13 Medicare patients in 2024, average age 69
CMS counts 13 Medicare patients who saw Sandra Leyan Castillo in 2024. The largest group is 85 and over, with 0 patients. Their average risk score is 0.96, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Sandra Leyan Castillo's median patient age at 48, with 68% women.
Sandra Leyan Castillo's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Sandra Leyan Castillo's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 48
Patient panel by sex, all payers
- Women68%
- Men32%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Sandra Veronica Leyan Castillo wrote 140 Medicare Part D claims in 2024
In 2024, Sandra Leyan Castillo wrote 140 Medicare Part D claims for 62 patients. 87% of them were for generic drugs.
Sandra Leyan Castillo's Part D claims by kind of drug, 2024
- Generic122 claims87%
- Brand-name and other18 claims13%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Sandra Veronica Leyan Castillo received $30 in industry payments in 2025
CMS Open Payments shows 1 general payment to Sandra Leyan Castillo from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $30.
Companies that paid Sandra Leyan Castillo the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Sandra Veronica Leyan Castillo'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 Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| 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 (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 Sandra Veronica Leyan Castillo
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Sandra Veronica Leyan Castillo's NPI number?
Sandra Veronica Leyan Castillo's NPI number is 1548922875. It was assigned on October 13, 2021, and it is active in the NPI Registry.
What does Sandra Veronica Leyan Castillo specialize in?
Sandra Veronica Leyan Castillo is a nurse practitioner in Boston, Massachusetts. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Sandra Veronica Leyan Castillo practice?
Sandra Leyan Castillo practices at 55 Fruit Street, Boston, MA 02114. Sandra Leyan Castillo's primary practice is Massachusetts General Hospital in Boston, Massachusetts, part of Mass General Brigham. Dmand AI also links Sandra Leyan Castillo to 1 community health center and 1 group practice or clinic.
What is Sandra Veronica Leyan Castillo's office phone number?
The practice phone on file for Sandra Leyan Castillo is (617) 726-2000.
What is Sandra Veronica Leyan Castillo's medical license number?
Sandra Leyan Castillo holds Massachusetts license RN2327535.
Which hospitals is Sandra Veronica Leyan Castillo affiliated with?
Sandra Leyan Castillo practices at Massachusetts General Hospital in Boston, Massachusetts.
What medical group is Sandra Veronica Leyan Castillo part of?
Sandra Leyan Castillo is linked to North End Waterfront Health (NEW Health).
How many Medicare patients does Sandra Veronica Leyan Castillo see?
CMS counts 13 Medicare patients who saw Sandra Leyan Castillo in 2024, with an average age of 69.
Has Sandra Veronica Leyan Castillo received payments from drug or device companies?
CMS Open Payments shows $30 in general payments to Sandra Leyan Castillo from 1 company from 2025 to 2025. The largest total came from Eli Lilly and Company.
How long has Sandra Veronica Leyan Castillo been practicing?
Sandra Leyan Castillo graduated from medical school in 2019, 7 years ago.
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