Diane D. Nightengale, M.D.
NPI 1265423149ActiveIndividual· Family Medicine· El Dorado, KS
Family Medicine (M.D.) with El Dorado Clinic, P.A., practicing in El Dorado, Kansas. Their prescriptions cost Medicare Part D more than their services did: $905,413 for 8,090 claims, against $2,988 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 24 companies reporting payments in 2025, $2,211 in all, mostly food and beverage. Lists Greenwood County Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1265423149 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 31, 2005 |
| Last updated in NPPES | Apr 8, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 0421928 | KS |
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 - Family Practice (KS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 104 |
|---|---|
| Services billed | 190 across 41 procedure codes |
| Paid by Medicare | $2,988 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,090 · 16,493 30-day fills |
|---|---|
| Patients | 446 |
| Total drug cost | $905,413 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Family Practice |
Medical group
- El Dorado Clinic, P.A.El Dorado, KS · 6 clinicians
Hospital affiliations
- Greenwood County HospitalEureka, KS
- Susan B Allen Memorial HospitalEl Dorado, KS
Other facilities
- Susan B Allen Mem Hospital HhaHome health agency · El Dorado, KS
- Lakepoint El Dorado, LLCNursing home · El Dorado, KS
Industry payments (Open Payments)
- 2025$2,211 · 140 payments from 24 companies
- 2024$2,412 · 148 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $294.19 | 23 |
| Pfizer Inc. | $256.58 | 15 |
| Amgen Inc. | $245.29 | 17 |
| Otsuka America Pharmaceutical, Inc. | $201.22 | 12 |
| Novo Nordisk Inc | $188.43 | 12 |
What the 2025 payments were for
- Food and Beverage$2,211 · 140 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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