Nazanine Khairkhah, MD
NPI 1518937622ActiveIndividual· Internal Medicine, Nephrology· Greenwich, CT
Internal Medicine, Nephrology (MD) in Greenwich, Connecticut, licensed in NY, with an NPI issued in January 2006. Their prescriptions cost Medicare Part D more than their services did: $597,909 for 6,113 claims, against $212,925 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 25 companies reporting payments in 2025, $3,023 in all, mostly food and beverage. Lists Greenwich Hospital Association - and 1 other hospital as hospital affiliations.
Overview
| NPI | 1518937622 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 23, 2006 |
| Last updated in NPPES | Dec 17, 2019 |
| Certified by provider | Dec 17, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 232715 | NY |
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 - Internal Medicine (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 394 |
|---|---|
| Services billed | 3,371 across 35 procedure codes |
| Paid by Medicare | $212,925 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,113 · 12,013 30-day fills |
|---|---|
| Patients | 426 |
| Total drug cost | $597,909 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Nephrology |
| Telehealth | Offers telehealth |
Hospital affiliations
- Greenwich Hospital Association -Greenwich, CT
- Yale-New Haven HospitalNew Haven, CT
Other facilities
- Davita Stamford DialysisDialysis facility · Stamford, CT
- Elara CaringHome health agency · Rocky Hill, CT
- Health Care Connectors LLCHome health agency · Greenwich, CT
- Sterling Care LLCHome health agency · Greenwich, CT
Industry payments (Open Payments)
- 2025$3,023 · 165 payments from 25 companies
- 2024$3,865 · 194 payments from 27 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $497.15 | 44 |
| Pfizer Inc. | $368.91 | 20 |
| Ani Pharmaceuticals, Inc. | $277.81 | 12 |
| Mallinckrodt Hospital Products Inc. | $252.49 | 9 |
| Amgen Inc. | $234.91 | 10 |
What the 2025 payments were for
- Food and Beverage$2,831 · 157 payments
- Education$192.17 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other nephrologists in Greenwich
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