Gregory Andrew Hanissian, MD
NPI 1033216148ActiveIndividual· Allergy & Immunology· Germantown, TN
Allergy & Immunology (MD) in Germantown, Tennessee, trained at University of Alabama School of Medicine (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $236,630 for 487 claims, against $66,886 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 18 companies reporting payments in 2025, $2,916 in all, mostly food and beverage.
Overview
| NPI | 1033216148 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 20, 2006 |
| Last updated in NPPES | Jan 11, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | 25121 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Allergy/Immunology (TN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 194 |
|---|---|
| Services billed | 7,847 across 24 procedure codes |
| Paid by Medicare | $66,886 |
Part D prescriptions in 2024
| Prescriptions (claims) | 487 · 727 30-day fills |
|---|---|
| Patients | 115 |
| Total drug cost | $236,630 |
| Generic share | 72% of claims |
Education and affiliations
| Medical school | University of Alabama School of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Allergy/Immunology |
Medical group
- Consolidated Medical Practices of Memphis,pllcMemphis, TN · 110 clinicians
Industry payments (Open Payments)
- 2025$2,916 · 135 payments from 18 companies
- 2024$1,749 · 87 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $572.26 | 35 |
| Novartis Pharmaceuticals Corporation | $487.44 | 24 |
| Csl Behring | $369.65 | 13 |
| Genzyme Corporation | $285.07 | 10 |
| Glaxosmithkline, LLC. | $282.73 | 16 |
What the 2025 payments were for
- Food and Beverage$2,859 · 133 payments
- Education$34.00 · 1 payment
- Consulting Fee$23.08 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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