Serena Kristine Barnhill, MD
NPI 1972998029ActiveIndividual· Internal Medicine, Pulmonary Disease· Seattle, WA
Internal Medicine, Pulmonary Disease (MD) in Seattle, Washington, trained at University of Washington School of Medicine (class of 2015). Their prescriptions cost Medicare Part D more than their services did: $187,794 for 201 claims, against $44,532 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 2 companies reporting payments in 2025, $50.77 in all, mostly food and beverage.
Overview
| NPI | 1972998029 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 4, 2015 |
| Last updated in NPPES | Mar 8, 2021 |
| Certified by provider | Mar 8, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | MD60854850 | WA |
| Internal Medicine | 207R00000X | MD60854850 | WA |
| Internal Medicine, Critical Care Medicine | 207RC0200X | MD60854850 | WA |
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 - Internal Medicine (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 203 |
|---|---|
| Services billed | 559 across 45 procedure codes |
| Paid by Medicare | $44,532 |
Part D prescriptions in 2024
| Prescriptions (claims) | 201 · 265 30-day fills |
|---|---|
| Patients | 59 |
| Total drug cost | $187,794 |
| Generic share | 40% of claims |
Education and affiliations
| Medical school | University of Washington School of Medicine |
|---|---|
| Graduation year | 2015 |
| Medicare specialty | Internal Medicine |
Medical group
- Critical Care Pulmonary and Sleep Associates Professional LLPLakewood, CO · 63 clinicians
Hospital affiliations
- Adventhealth LittletonLittleton, CO
- Adventhealth ParkerParker, CO
- Adventhealth PorterDenver, CO
- Centura Health-St Anthony HospitalLakewood, CO
- Centura Health-St Anthony North Health CampusWestminster, CO
Industry payments (Open Payments)
- 2025$50.77 · 3 payments from 2 companies
- 2024$99.15 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $28.79 | 2 |
| Merck Sharp & Dohme LLC | $21.98 | 1 |
What the 2025 payments were for
- Food and Beverage$50.77 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Pulmonary Disease providers in Washington →