Silas Willoughby, ARNP
NPI 1649782814 · Psychiatric/Mental Health Nurse Practitioner · Selah, WA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1649782814
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP
- Sex
- Male
- Sole proprietor
- No
- License
- AP61272511 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Quetiapine Fumarate | 31 | 15 |
| Trazodone Hcl | 20 | 12 |
| Divalproex Sodiumbrand: Divalproex Sodium Er | 19 | — |
| Haloperidol | 19 | — |
| Lorazepam | 17 | 14 |
| Benztropine Mesylate | 13 | — |
| Chlorpromazine Hcl | 12 | — |
Practice location
Mailing address
Additional practice locations (1)
- 1724 Clio StNew Orleans, LA 70113-1210Phone: (504) 717-8224
Registry dates
- Enumerated
- 2017-10-28
- Last updated
- 2024-03-18
- Certified
- 2024-03-18
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.