Joseph Christopher Portera, MD
NPI 1821088410ActiveIndividual· Obstetrics & Gynecology, Gynecology· Chattanooga, TN
Obstetrics & Gynecology, Gynecology (MD) in Chattanooga, Tennessee, trained at Albany Medical College of Union University (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $301,960 for 2,489 claims, against $106,727 paid for services in 2024. Sumitomo Pharma America, Inc. was the largest of 10 companies reporting payments in 2025, $450.41 in all, mostly food and beverage.
Overview
| NPI | 1821088410 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 25, 2005 |
| Last updated in NPPES | Mar 4, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Gynecology Primary | 207VG0400X | MD0000025662 | TN |
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 (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 552 |
|---|---|
| Services billed | 1,863 across 46 procedure codes |
| Paid by Medicare | $106,727 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,489 · 4,836 30-day fills |
|---|---|
| Patients | 749 |
| Total drug cost | $301,960 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Albany Medical College of Union University |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Obstetrics/Gynecology |
Medical groups
- Erlanger HealthChattanooga, TN · 507 clinicians
- Chattanooga Hamilton County Hospital AuthorityChattanooga, TN · 146 clinicians
Hospital affiliations
- Erlanger Medical CenterChattanooga, TN
- Memorial Healthcare System, IncChattanooga, TN
Industry payments (Open Payments)
- 2025$450.41 · 23 payments from 10 companies
- 2024$527.66 · 31 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sumitomo Pharma America, Inc. | $160.63 | 10 |
| Astellas Pharma US Inc | $65.77 | 2 |
| Boston Scientific Corporation | $58.07 | 3 |
| Pfizer Inc. | $36.93 | 2 |
| Baxter Healthcare | $31.01 | 1 |
What the 2025 payments were for
- Food and Beverage$450.41 · 23 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Obstetrics & Gynecology, Gynecology providers in Tennessee →