Alvin Raymond Co Tan, M.D.
NPI 1093178725ActiveIndividual· Internal Medicine· Katy, TX
Internal Medicine (M.D.) with Kelsey-Seybold Medical Group, PLLC, practicing in Katy, Texas. Their prescriptions cost Medicare Part D more than their services did: $186,824 for 1,430 claims, against $1,616 paid for services in 2024.
Overview
| NPI | 1093178725 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 31, 2016 |
| Last updated in NPPES | Jun 22, 2021 |
| Certified by provider | Jun 22, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | P6925 | TX |
| Internal Medicine, Nephrology | 207RN0300X | P6925 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 11 |
|---|---|
| Services billed | 47 across 12 procedure codes |
| Paid by Medicare | $1,616 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,430 · 3,607 30-day fills |
|---|---|
| Patients | 497 |
| Total drug cost | $186,824 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Nephrology |
Medical group
- Kelsey-Seybold Medical Group, PLLCHouston, TX · 957 clinicians
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 104 internal medicine physicians in Katy · All internal medicine physicians in Texas