Mohamad Ammar Hatahet, MD
NPI 1952364242ActiveIndividual· Internal Medicine· Waterford, MI
Internal Medicine (MD) with Hatahet Center PLLC, practicing in Waterford, Michigan. Their prescriptions cost Medicare Part D more than their services did: $351,013 for 678 claims, against $68,396 paid for services in 2024. Novo Nordisk Inc was the largest of 9 companies reporting payments in 2025, $19,776 in all, mostly speaking and faculty fees. Lists Beaumont Hospital, Troy and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1952364242 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 9, 2006 |
| Last updated in NPPES | Mar 19, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 4301056359 | MI |
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 (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 177 |
|---|---|
| Services billed | 722 across 15 procedure codes |
| Paid by Medicare | $68,396 |
Part D prescriptions in 2024
| Prescriptions (claims) | 678 · 1,177 30-day fills |
|---|---|
| Patients | 130 |
| Total drug cost | $351,013 |
| Generic share | 51% of claims |
Education and affiliations
| Graduation year | 1988 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Hatahet Center PLLCBloomfield Hills, MI · 2 clinicians
Hospital affiliations
- Beaumont Hospital, TroyTroy, MI
- McLaren OaklandPontiac, MI
- Trinity Health Oakland HospitalPontiac, MI
Industry payments (Open Payments)
- 2025$19,776 · 51 payments from 9 companies
- 2024$38,591 · 91 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $19,078 | 32 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $233.86 | 2 |
| Lilly USA, LLC | $174.21 | 9 |
| Boston Scientific Corporation | $120.00 | 1 |
| Intra-Sana Laboratories | $66.91 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$15,722 · 8 payments
- Consulting Fee$2,130 · 2 payments
- Food and Beverage$1,848 · 37 payments
- Travel and Lodging$76.20 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 38 internal medicine physicians in Waterford · All internal medicine physicians in Michigan