Carmen Manuela Klass, MD, PHD
NPI 1598871410ActiveIndividual· Internal Medicine, Hematology & Oncology· Marietta, GA
Internal Medicine, Hematology & Oncology (MD, PHD) with Wellstar Medical Group LLC, practicing in Marietta, Georgia. Their prescriptions cost Medicare Part D more than their services did: $2,737,703 for 2,027 claims, against $93,564 paid for services in 2024. Janssen Biotech, Inc. was the largest of 17 companies reporting payments in 2025, $1,113 in all, mostly food and beverage. Lists Wellstar Cobb Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1598871410 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | No |
| NPI issued | Aug 22, 2006 |
| Last updated in NPPES | Jun 10, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 053774 | GA |
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 - Hematology/Oncology (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 502 |
|---|---|
| Services billed | 1,474 across 16 procedure codes |
| Paid by Medicare | $93,564 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,027 · 3,039 30-day fills |
|---|---|
| Patients | 373 |
| Total drug cost | $2,737,703 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Hematology, Medical Oncology |
Medical group
- Wellstar Medical Group LLCMarietta, GA · 3,093 clinicians
Hospital affiliations
- Wellstar Cobb Medical CenterAustell, GA
- Wellstar Douglas Medical CenterDouglasville, GA
- Wellstar Kennestone Regional Medical CenterMarietta, GA
- Wellstar North Fulton Medical CenterRoswell, GA
- Wellstar Paulding Medical CenterHiram, GA
Other facilities
- Wellstar Home Health, LLCHome health agency · Marietta, GA
- Wellstar Windy Hill HospitalLong-term care hospital · Marietta, GA
Industry payments (Open Payments)
- 2025$1,113 · 46 payments from 17 companies
- 2024$933.17 · 43 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $239.89 | 4 |
| Daiichi Sankyo Inc. | $155.99 | 8 |
| Pfizer Inc. | $149.98 | 6 |
| Gilead Sciences, Inc. | $136.19 | 8 |
| Novartis Pharmaceuticals Corporation | $81.74 | 4 |
What the 2025 payments were for
- Food and Beverage$865.61 · 41 payments
- Education$247.84 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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