Yan Tan, M.D.
NPI 1275819179ActiveIndividual· Internal Medicine· Quincy, MA
Internal Medicine (M.D.) in Quincy, Massachusetts, licensed in MA, with an NPI issued in October 2011. Their prescriptions cost Medicare Part D more than their services did: $241,308 for 2,359 claims, against $22,191 paid for services in 2024. Exact Sciences Corporation was the largest of 6 companies reporting payments in 2025, $149.98 in all, mostly food and beverage. Lists Beth Israel Deaconess Hospital - Milton and 1 other hospital as hospital affiliations.
Overview
| NPI | 1275819179 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 24, 2011 |
| Last updated in NPPES | Jul 26, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 252539 | MA |
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 (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 41 |
|---|---|
| Services billed | 337 across 22 procedure codes |
| Paid by Medicare | $22,191 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,359 · 5,435 30-day fills |
|---|---|
| Patients | 138 |
| Total drug cost | $241,308 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliations
- Beth Israel Deaconess Hospital - MiltonMilton, MA
- South Shore HospitalSouth Weymouth, MA
Industry payments (Open Payments)
- 2025$149.98 · 7 payments from 6 companies
- 2024$112.86 · 6 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $42.20 | 2 |
| Abbott Laboratories | $30.98 | 1 |
| Pfizer Inc. | $20.51 | 1 |
| Hologic Sales and Service, LLC | $19.78 | 1 |
| Novo Nordisk Inc | $19.25 | 1 |
What the 2025 payments were for
- Food and Beverage$149.98 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 49 internal medicine physicians in Quincy · All internal medicine physicians in Massachusetts