Emma Janet Castillo, M.D.
NPI 1598730053ActiveIndividual· Internal Medicine, Gastroenterology· Chandler, AZ
Internal Medicine, Gastroenterology (M.D.) in Chandler, Arizona, trained at University of Oklahoma College of Medicine (class of 1998). Their prescriptions cost Medicare Part D more than their services did: $147,839 for 601 claims, against $57,603 paid for services in 2024. Boston Scientific Corporation was the largest of 3 companies reporting payments in 2025, $163.10 in all, mostly food and beverage.
Overview
| NPI | 1598730053 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 20, 2006 |
| Last updated in NPPES | Aug 19, 2021 |
| Certified by provider | Aug 19, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 29015 | AZ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 340 |
|---|---|
| Services billed | 614 across 32 procedure codes |
| Paid by Medicare | $57,603 |
Part D prescriptions in 2024
| Prescriptions (claims) | 601 · 1,004 30-day fills |
|---|---|
| Patients | 249 |
| Total drug cost | $147,839 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | University of Oklahoma College of Medicine |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Gastroenterology |
Medical group
- Honorhealth AmbulatoryScottsdale, AZ · 630 clinicians
Hospital affiliations
- Honorhealth Scottsdale Shea Medical CenterScottsdale, AZ
- Honorhealth Scottsdale Thompson Peak Med CtrScottsdale, AZ
Industry payments (Open Payments)
- 2025$163.10 · 4 payments from 3 companies
- 2024$580.92 · 6 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $121.68 | 2 |
| Abbvie Inc. | $21.17 | 1 |
| Genzyme Corporation | $20.25 | 1 |
What the 2025 payments were for
- Food and Beverage$163.10 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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