Christopher T. Hagenstad, M.D.
NPI 1659460244ActiveIndividual· Internal Medicine, Hematology & Oncology· Lawrenceville, GA
Internal Medicine, Hematology & Oncology (M.D.) with North Atlanta Oncology Services LLC, practicing in Lawrenceville, Georgia. Their prescriptions cost Medicare Part D more than their services did: $3,651,088 for 1,414 claims, against $23,919 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 30 companies reporting payments in 2025, $1,571 in all, mostly food and beverage. Lists Northside Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1659460244 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 12, 2006 |
| Last updated in NPPES | Mar 1, 2021 |
| Certified by provider | Mar 1, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 052738 | 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 - Medical Oncology (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 145 |
|---|---|
| Services billed | 405 across 16 procedure codes |
| Paid by Medicare | $23,919 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,414 · 2,208 30-day fills |
|---|---|
| Patients | 220 |
| Total drug cost | $3,651,088 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Medical Oncology |
Medical group
- North Atlanta Oncology Services LLCDacula, GA · 29 clinicians
Hospital affiliations
- Northside HospitalAtlanta, GA
- Northside Hospital DuluthDuluth, GA
- Northside Hospital ForsythCumming, GA
- Northside Hospital GwinnettLawrenceville, GA
Industry payments (Open Payments)
- 2025$1,571 · 66 payments from 30 companies
- 2024$2,048 · 93 payments from 35 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $194.02 | 7 |
| Pfizer Inc. | $166.48 | 8 |
| Beone Medicines USA, Inc. | $101.48 | 4 |
| Merck Sharp & Dohme LLC | $94.73 | 3 |
| Daiichi Sankyo Inc. | $91.45 | 4 |
What the 2025 payments were for
- Food and Beverage$1,519 · 63 payments
- Education$52.15 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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