Darrelle Walker, ARNP, FNP-C
NPI 1740059187 · Family Nurse Practitioner · Olympia, WA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Darrelle Walker, ARNP, FNP-C is a Family Nurse Practitioner provider in Olympia, WA (NPI 1740059187).
Provider details
- NPI number
- 1740059187
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP, FNP-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- ARNP.AP.61517314-NP (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 tenure25% of score
2 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
185 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 86 | $140 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 47 | $77 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 34 | $106 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 18 | $95 |
Typical Medicare-allowed amounts for these services range $77–$140 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 58 | 20 |
| Pantoprazole Sodium | 51 | 29 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 31 | 28 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Peg-3350 and Electrolytes | 27 | 27 |
| Famotidine | 25 | — |
| Ondansetronbrand: Ondansetron Odt | 14 | — |
| Cholestyramine (with Sugar)brand: Cholestyramine |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$79 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 3620 Ensign Rd NeOlympia, WA 98506-6957Phone: (928) 287-9319
Registry dates
- Enumerated
- 2023-12-27
- Last updated
- 2024-03-26
- Certified
- 2024-03-26
Frequently asked questions
- What is Darrelle Walker's NPI number?
- Darrelle Walker's National Provider Identifier (NPI) is 1740059187, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Darrelle Walker's specialty?
- Darrelle Walker is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Darrelle Walker located?
- Darrelle Walker's practice location on file with NPPES is 209 Lilly Rd Ne Ste B, Olympia, WA 98506-5030.
- What is Darrelle Walker's phone number?
- The practice phone number listed in the NPPES registry for Darrelle Walker is (360) 413-8250.
- Does Darrelle Walker accept Medicare?
- Darrelle Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Darrelle Walker's NPI active?
- Yes — Darrelle Walker's NPI (1740059187) is active in the NPPES registry as of the last update on 2024-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.