Aldemar Montero, M.D.
NPI 1649229683ActiveIndividual· 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: $928,707 for 470 claims, against $22,121 paid for services in 2024. Astellas Pharma US Inc was the largest of 26 companies reporting payments in 2025, $1,358 in all, mostly food and beverage. Lists Northside Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1649229683 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 8, 2006 |
| Last updated in NPPES | Jul 1, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 57536 | 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 | 119 |
|---|---|
| Services billed | 312 across 16 procedure codes |
| Paid by Medicare | $22,121 |
Part D prescriptions in 2024
| Prescriptions (claims) | 470 · 603 30-day fills |
|---|---|
| Patients | 91 |
| Total drug cost | $928,707 |
| Generic share | 70% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Medical Oncology |
| Secondary specialties | Internal Medicine |
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$1,358 · 52 payments from 26 companies
- 2024$1,144 · 58 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $140.76 | 5 |
| Astrazeneca Pharmaceuticals LP | $129.85 | 5 |
| Janssen Biotech, Inc. | $109.47 | 4 |
| Beone Medicines USA, Inc. | $96.67 | 4 |
| Merck Sharp & Dohme LLC | $94.19 | 3 |
What the 2025 payments were for
- Food and Beverage$1,358 · 52 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Hematology & Oncology providers in Georgia →