Tammy W. Chan, M.D.
NPI 1902077324ActiveIndividual· Obstetrics & Gynecology· Westerville, OH
Obstetrics & Gynecology (M.D.) in Westerville, Ohio, trained at Ohio State University College of Medicine (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $5,174 for 63 claims, against $2,212 paid for services in 2024. Biogen, Inc. reported $17.26 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1902077324 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 13, 2008 |
| Last updated in NPPES | Feb 14, 2022 |
| Certified by provider | Feb 14, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 35092332 | OH |
| Obstetrics & Gynecology | 207V00000X | 11011777A | IN |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Obstetrics/Gynecology (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 21 |
|---|---|
| Services billed | 33 across 10 procedure codes |
| Paid by Medicare | $2,212 |
Part D prescriptions in 2024
| Prescriptions (claims) | 63 · 101 30-day fills |
|---|---|
| Patients | 24 |
| Total drug cost | $5,174 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | Ohio State University College of Medicine |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Oh Independent Medical Group LLCTallmadge, OH · 144 clinicians
Hospital affiliation
- Mount Carmel St Ann'sWesterville, OH
Industry payments (Open Payments)
- 2025$17.26 · 1 payment from 1 company
- 2024$96.39 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Biogen, Inc. | $17.26 | 1 |
What the 2025 payments were for
- Food and Beverage$17.26 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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