Mark Doran Anderson, M.D.
NPI 1679640866ActiveIndividual· Internal Medicine· Ridgefield, CT
Listed on the HHS-OIG exclusion list since November 2020 (1128b4). Internal Medicine (M.D.) in Ridgefield, Connecticut, licensed in CT, with an NPI issued in November 2006.
Overview
| NPI | 1679640866 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 30, 2006 |
| Last updated in NPPES | Nov 18, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | CT027066 | CT |
Exclusion screening
This NPI appears on the OIG exclusion list. Excluded parties cannot be paid by Medicare, Medicaid or other federal health care programs, directly or through an employer.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| NPI | Mark Doran Anderson · Internal Medicine | 1128b4 | Nov 19, 2020 | Newtown, PA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Listed (NPI) | See above |
| 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 | Listed (NPI) | Precluded · since Nov 19, 2020 · PA |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Not in the public enrollment file of Oct 1, 2026 |
|---|
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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