Theodore Conrad Ang Tan, M.D.
NPI 1003046624ActiveIndividual· Internal Medicine· Dover, DE
Internal Medicine (M.D.) with Delaware Primary Care LLC, practicing in Dover, Delaware. Their prescriptions cost Medicare Part D more than their services did: $1,003,403 for 7,465 claims, against $55,227 paid for services in 2024. Amgen Inc. was the largest of 16 companies reporting payments in 2025, $807.70 in all, mostly food and beverage. Lists Bayhealth Hospital, Sussex Campus and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1003046624 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 16, 2009 |
| Last updated in NPPES | Dec 28, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | C10010131 | DE |
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 - Internal Medicine (DE) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 380 |
|---|---|
| Services billed | 1,807 across 27 procedure codes |
| Paid by Medicare | $55,227 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,465 · 18,109 30-day fills |
|---|---|
| Patients | 740 |
| Total drug cost | $1,003,403 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Delaware Primary Care LLCMilford, DE · 6 clinicians
Hospital affiliations
- Bayhealth Hospital, Sussex CampusMilford, DE
- Bayhealth Medical Center, Kent CampusDover, DE
- Christiana HospitalNewark, DE
Other facilities
- Bayada Home Health Care at BayhealthHome health agency · Dover, DE
- Christianacare HomehealthHome health agency · Camden, DE
Industry payments (Open Payments)
- 2025$807.70 · 37 payments from 16 companies
- 2024$503.48 · 26 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $269.44 | 8 |
| Novo Nordisk Inc | $137.84 | 9 |
| Lilly USA, LLC | $71.90 | 3 |
| Glaxosmithkline, LLC. | $54.70 | 3 |
| Astrazeneca Pharmaceuticals LP | $52.79 | 3 |
What the 2025 payments were for
- Food and Beverage$632.70 · 36 payments
- Consulting Fee$175.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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