Eng Keong Tan, M.D
NPI 1811339013ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Carson City, NV
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D) with Cth Physicians Clinic and 1 other group, practicing in Carson City, Nevada. Their prescriptions cost Medicare Part D more than their services did: $2,802,772 for 3,844 claims, against $129,060 paid for services in 2024. Insulet Corporation was the largest of 23 companies reporting payments in 2025, $2,410 in all, mostly food and beverage. Lists Barton Memorial Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1811339013 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | No |
| NPI issued | Jul 29, 2013 |
| Last updated in NPPES | Sep 28, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 18176 | NV |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Endocrinology (NV) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 531 |
|---|---|
| Services billed | 2,350 across 12 procedure codes |
| Paid by Medicare | $129,060 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,844 · 9,993 30-day fills |
|---|---|
| Patients | 725 |
| Total drug cost | $2,802,772 |
| Generic share | 47% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical groups
- Cth Physicians ClinicReno, NV · 108 clinicians
- Carson Tahoe Physician ClinicsReno, NV · 101 clinicians
Hospital affiliations
- Barton Memorial HospitalSouth Lake Tahoe, CA
- Carson Tahoe Regional Medical CenterCarson City, NV
- Carson Valley HealthGardnerville, NV
- Renown Regional Medical CenterReno, NV
- South Lyon Medical CenterYerington, NV
Industry payments (Open Payments)
- 2025$2,410 · 71 payments from 23 companies
- 2024$1,811 · 62 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Insulet Corporation | $361.02 | 14 |
| Amgen Inc. | $250.83 | 4 |
| Ascendis Pharma Endocrinology Inc | $194.74 | 4 |
| Medtronic, Inc. | $188.08 | 11 |
| Mannkind Corporation | $169.24 | 4 |
What the 2025 payments were for
- Food and Beverage$2,410 · 71 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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