Natalie N. Siegfried, DO
NPI 1457960247ActiveIndividual· Emergency Medicine· Norman, OK
Emergency Medicine (DO) with Chickasaw Nation Division of Health Chickasaw Nation Medical Center and 1 other group, practicing in Norman, Oklahoma. 305 Medicare patients in 2024, $33,211 paid; nearly all of their 321 Part D prescriptions were generic (96%). Chiesi USA, Inc. was the largest of 2 companies reporting payments in 2025, $226.62 in all, mostly food and beverage. Lists Norman Regional as a hospital affiliation.
Overview
| NPI | 1457960247 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jul 28, 2020 |
| Last updated in NPPES | May 2, 2022 |
| Certified by provider | May 2, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 7351 | OK |
| Emergency Medicine | 207P00000X | 0382R | OK |
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 - Emergency Medicine (OK); Practitioner - Emergency Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 305 |
|---|---|
| Services billed | 337 across 16 procedure codes |
| Paid by Medicare | $33,211 |
Part D prescriptions in 2024
| Prescriptions (claims) | 321 · 323 30-day fills |
|---|---|
| Patients | 207 |
| Total drug cost | $4,770 |
| Generic share | 96% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Emergency Medicine |
Medical groups
- Chickasaw Nation Division of Health Chickasaw Nation Medical CenterAda, OK · 240 clinicians
- Norman Regional Hospital AuthorityNorman, OK · 27 clinicians
Hospital affiliation
- Norman RegionalNorman, OK
Industry payments (Open Payments)
- 2025$226.62 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Chiesi USA, Inc. | $117.45 | 1 |
| Ucb, Inc. | $109.17 | 1 |
What the 2025 payments were for
- Food and Beverage$226.62 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other emergency medicine physicians in Norman
- 1083283956
- 1093323891
- 1215387717
- 1225401292
- 1285069500
- 1285204933
- 1326609611
- 1417443466
- 1437564994
- 1447989199
- 1497208581
- 1497825160
All 74 emergency medicine physicians in Norman · All emergency medicine physicians in Oklahoma