Tao-Nan Chi, M.D.
NPI 1538279583ActiveIndividual· Internal Medicine· Norwalk, CT
Internal Medicine (M.D.) with Hartford Healthcare Medical Group Specialists PLLC, practicing in Norwalk, Connecticut. Their prescriptions cost Medicare Part D more than their services did: $1,040,628 for 9,208 claims, against $146,469 paid for services in 2024. Novo Nordisk Inc was the largest of 2 companies reporting payments in 2025, $143.81 in all, mostly food and beverage. Lists Norwalk Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1538279583 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 30, 2006 |
| Last updated in NPPES | May 21, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 019430 | CT |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 019430 | CT |
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 - Internal Medicine (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 448 |
|---|---|
| Services billed | 1,991 across 39 procedure codes |
| Paid by Medicare | $146,469 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,208 · 22,873 30-day fills |
|---|---|
| Patients | 798 |
| Total drug cost | $1,040,628 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1970 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Cardiovascular Disease (Cardiology) |
Medical group
- Hartford Healthcare Medical Group Specialists PLLCBridgeport, CT · 1,588 clinicians
Hospital affiliations
- Norwalk HospitalNorwalk, CT
- St Vincent's Medical CenterBridgeport, CT
Other facilities
- Elara CaringHome health agency · Rocky Hill, CT
- Hartford Healthcare at HomeHome health agency · East Hartford, CT
- Visiting Nurse & Hospice of Fairfield County, IncHome health agency · Wilton, CT
- Western Connecticut Home Care IncHome health agency · Danbury, CT
Industry payments (Open Payments)
- 2025$143.81 · 2 payments from 2 companies
- 2024$66.27 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $125.01 | 1 |
| Kyowa Kirin, Inc. | $18.80 | 1 |
What the 2025 payments were for
- Food and Beverage$143.81 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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