Nathaniel Greenwood, D.O.
NPI 1770798563ActiveIndividual· Emergency Medicine· Cedar Park, TX
Emergency Medicine (D.O.) in Cedar Park, Texas, trained at Pennsylvania State University College of Medicine (class of 2008). Mostly services rather than prescriptions: Medicare paid $2,861 for 24 patients in 2024, with only 28 Part D claims. Lilly USA, LLC reported $17.48 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1770798563 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | May 14, 2007 |
| Last updated in NPPES | Mar 25, 2026 |
| Certified by provider | Mar 25, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | P2863 | TX |
| Emergency Medicine | 207P00000X | OT011248 | PA |
| Emergency Medicine | 207P00000X | 2008 | NE |
| General Practice | 208D00000X | 2008 | NE |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| 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 - General Practice (NE); Practitioner - Emergency Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 24 |
|---|---|
| Services billed | 64 across 25 procedure codes |
| Paid by Medicare | $2,861 |
Part D prescriptions in 2024
| Prescriptions (claims) | 28 · 28 30-day fills |
|---|---|
| Patients | 21 |
| Total drug cost | $517.72 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Pennsylvania State University College of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | General Practice |
| Secondary specialties | Emergency Medicine |
Medical groups
- Brushy Creek Emergency PhysiciansRound Rock, TX · 18 clinicians
- Lake Travis Emergency Physicians PLLCAustin, TX · 10 clinicians
- Bandera Emergency Physicians PLLCSan Antonio, TX · 6 clinicians
- Nebraska Medical Clinics PLLCOmaha, NE · 4 clinicians
Hospital affiliations
- Bandera Family HospitalSan Antonio, TX
- Brushy Creek Family Hospital LLCRound Rock, TX
Industry payments (Open Payments)
- 2025$17.48 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $17.48 | 1 |
What the 2025 payments were for
- Food and Beverage$17.48 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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