William Maxwell-Walker, APRN
NPI 1215454178 · Family Nurse Practitioner · Russellville, AR
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Maxwell-Walker, APRN is a Family Nurse Practitioner provider in Russellville, AR (NPI 1215454178).
Provider details
- NPI number
- 1215454178
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Male
- Sole proprietor
- No
- License
- A005334 (AR)
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
8 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
829 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) |
|---|---|---|
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 156 | $16 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 128 | $11 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 118 | $98 |
| Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811 | 89 | $40 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 84 | $85 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Doxycycline Hyclate | 123 | 108 |
| Emtricitabine/Tenofov Alafenambrand: Descovy | 64 | — |
| Prednisone | 64 | 62 |
| Emtricitabine/Tenofovir (tdf)brand: Emtricitabine-Tenofovir Disop | 34 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 33 | 33 |
| Oseltamivir Phosphate | 26 | 26 |
| Nitrofurantoin Monohyd/M-Cryst |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 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)
- 232 Rachel CirRussellville, AR 72802-8683Phone: (479) 970-7423Fax: (404) 585-2688
Registry dates
- Enumerated
- 2017-08-23
- Last updated
- 2025-03-28
- Certified
- 2025-03-28
Frequently asked questions
- What is William Maxwell-Walker's NPI number?
- William Maxwell-Walker's National Provider Identifier (NPI) is 1215454178, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Maxwell-Walker's specialty?
- William Maxwell-Walker is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Maxwell-Walker located?
- William Maxwell-Walker's practice location on file with NPPES is 511 W Main St, Russellville, AR 72801-3601.
- What is William Maxwell-Walker's phone number?
- The practice phone number listed in the NPPES registry for William Maxwell-Walker is (479) 223-5130.
- Does William Maxwell-Walker accept Medicare?
- William Maxwell-Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Maxwell-Walker's NPI active?
- Yes — William Maxwell-Walker's NPI (1215454178) is active in the NPPES registry as of the last update on 2025-03-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.