Theodore Sy, MD
NPI 1003865627ActiveIndividual· Internal Medicine, Gastroenterology· Laguna Hills, CA
Internal Medicine, Gastroenterology (MD) in Laguna Hills, California, trained at Northwestern University Feinberg Medical School (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $1,142,537 for 1,098 claims, against $31,213 paid for services in 2024. Abbvie Inc. was the largest of 11 companies reporting payments in 2025, $1,287 in all, mostly food and beverage.
Overview
| NPI | 1003865627 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 9, 2006 |
| Last updated in NPPES | Feb 7, 2022 |
| Certified by provider | Feb 7, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A90266 | CA |
| Internal Medicine | 207R00000X | A90266 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 157 |
|---|---|
| Services billed | 354 across 26 procedure codes |
| Paid by Medicare | $31,213 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,098 · 1,864 30-day fills |
|---|---|
| Patients | 513 |
| Total drug cost | $1,142,537 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Memorialcare Medical FoundationLong Beach, CA · 566 clinicians
Hospital affiliation
- Memorialcare Saddleback Medical CenterLaguna Hills, CA
Industry payments (Open Payments)
- 2025$1,287 · 45 payments from 11 companies
- 2024$1,432 · 58 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $614.79 | 20 |
| Madrigal Pharmaceuticals | $201.28 | 5 |
| Lilly USA, LLC | $110.62 | 4 |
| Gilead Sciences, Inc. | $71.30 | 3 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $65.69 | 3 |
What the 2025 payments were for
- Food and Beverage$1,287 · 45 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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