Christopher M. O'Barr, CRNP
NPI 1023493509ActiveIndividual· Nurse Practitioner, Family· Huntsville, AL
Nurse Practitioner, Family (CRNP) with Green Health, practicing in Huntsville, Alabama. Their prescriptions cost Medicare Part D more than their services did: $261,855 for 2,281 claims, against $53,890 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 12 companies reporting payments in 2025, $887.24 in all, mostly food and beverage. Lists Crestwood Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1023493509 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNP |
| Sole proprietor | No |
| NPI issued | Jul 24, 2015 |
| Last updated in NPPES | Jul 24, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | 1-102890 | AL |
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 - Nurse Practitioner (AL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 288 |
|---|---|
| Services billed | 1,065 across 16 procedure codes |
| Paid by Medicare | $53,890 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,281 · 4,972 30-day fills |
|---|---|
| Patients | 397 |
| Total drug cost | $261,855 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Green HealthHuntsville, AL · 2 clinicians
Hospital affiliations
- Crestwood Medical CenterHuntsville, AL
- Huntsville HospitalHuntsville, AL
Industry payments (Open Payments)
- 2025$887.24 · 42 payments from 12 companies
- 2024$966.97 · 63 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $209.65 | 13 |
| Glaxosmithkline, LLC. | $173.42 | 8 |
| Janssen Pharmaceuticals, Inc | $115.74 | 2 |
| Novo Nordisk Inc | $88.44 | 4 |
| Corcept Therapeutics | $72.65 | 3 |
What the 2025 payments were for
- Food and Beverage$887.24 · 42 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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