Muhammad Afzal Ahmad, M.D.
Internal Medicine, Pulmonary Disease (M.D.) with Essen Medical Associates, PC and 2 other groups, practicing in Bronx, New York. Their prescriptions cost Medicare Part D more than their services did: $716,748 for 4,852 claims, against $137,079 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 9 companies reporting payments in 2025, $1,716 in all, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1811125339 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 23, 2009 |
| Last updated in NPPES | Nov 20, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 253494 | NY |
| Internal Medicine | 207R00000X | 253494 | NY |
| Internal Medicine, Sleep Medicine | 207RS0012X | 253494 | NY |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in New York, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Muhammad Nawaz Ahmad · Owner/Operator | 1128a1 | Mar 18, 2010 | Brooklyn, NY |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | Possible (name) | See above |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Pulmonary Disease (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 225 |
|---|---|
| Services billed | 1,344 across 22 procedure codes |
| Paid by Medicare | $137,079 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,852 · 5,545 30-day fills |
|---|---|
| Patients | 519 |
| Total drug cost | $716,748 |
| Generic share | 57% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Sleep Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Essen Medical Associates, PCBronx, NY · 266 clinicians
- Shakespeare Operating LLCBronx, NY · 151 clinicians
- Bronx Medical Practice PCBronx, NY · 130 clinicians
Industry payments (Open Payments)
- 2025$1,716 · 41 payments from 9 companies
- 2024$1,554 · 25 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $675.14 | 19 |
| Glaxosmithkline, LLC. | $581.52 | 11 |
| Lilly USA, LLC | $150.34 | 2 |
| Phathom Pharmaceuticals, Inc. | $124.73 | 1 |
| Genzyme Corporation | $63.86 | 3 |
What the 2025 payments were for
- Food and Beverage$1,716 · 41 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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