Upasana Bardhan Chakraborty, M.D.
NPI 1649459033ActiveIndividual· Internal Medicine, Pulmonary Disease· Chattanooga, TN
Internal Medicine, Pulmonary Disease (M.D.) with Erlanger Health and 1 other group, practicing in Chattanooga, Tennessee. Their prescriptions cost Medicare Part D more than their services did: $599,116 for 1,952 claims, against $60,515 paid for services in 2024. Intuitive Surgical, Inc. was the largest of 3 companies reporting payments in 2025, $1,647 in all, mostly education. Lists Erlanger Medical Center as a hospital affiliation.
Overview
| NPI | 1649459033 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 1, 2007 |
| Last updated in NPPES | Mar 9, 2022 |
| Certified by provider | Mar 9, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 01087314A | IN |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 48285 | TN |
| 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 - Critical Care (Intensivists) (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 250 |
|---|---|
| Services billed | 760 across 41 procedure codes |
| Paid by Medicare | $60,515 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,952 · 2,968 30-day fills |
|---|---|
| Patients | 258 |
| Total drug cost | $599,116 |
| Generic share | 41% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Critical Care (Intensivists) |
| Secondary specialties | Pulmonary Disease |
Medical groups
- Erlanger HealthChattanooga, TN · 507 clinicians
- Chattanooga Hamilton County Hospital AuthorityChattanooga, TN · 146 clinicians
Hospital affiliation
- Erlanger Medical CenterChattanooga, TN
Industry payments (Open Payments)
- 2025$1,647 · 3 payments from 3 companies
- 2024$959.68 · 11 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $1,500 | 1 |
| Galvanize Therapeutics, Inc | $129.98 | 1 |
| Insmed, Inc. | $17.38 | 1 |
What the 2025 payments were for
- Education$1,517 · 2 payments
- Food and Beverage$129.98 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 39 pulmonologists in Chattanooga · All pulmonologists in Tennessee