William Barker, ACNP
NPI 1457501025 · Acute Care Nurse Practitioner · Longview, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Barker, ACNP is a Acute Care Nurse Practitioner provider in Longview, TX (NPI 1457501025).
Provider details
- NPI number
- 1457501025
- Entity type
- Individual
- Primary specialty
- Acute Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ACNP
- Sex
- Male
- Sole proprietor
- No
- License
- AP117340 (TX)
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
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
619 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 405 | $81 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 139 | $14 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 54 | $7 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 21 | $55 |
Typical Medicare-allowed amounts for these services range $7–$81 (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 · 41 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sacubitril/Valsartanbrand: Entresto | 421 | 89 |
| Furosemide | 296 | 95 |
| Metoprolol Succinate | 233 | 88 |
| Apixabanbrand: Eliquis | 200 | 55 |
| Carvedilol | 192 | 60 |
| Atorvastatin Calcium | 149 | 54 |
| Lisinopril | 138 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$292 across 12 records (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
Registry dates
- Enumerated
- 2008-09-19
- Last updated
- 2015-10-23
Frequently asked questions
- What is William Barker's NPI number?
- William Barker's National Provider Identifier (NPI) is 1457501025, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Barker's specialty?
- William Barker is listed in the NPPES registry with a primary specialty of Acute Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Barker located?
- William Barker's practice location on file with NPPES is 703 E Marshall Ave, Longview, TX 75601-5500.
- What is William Barker's phone number?
- The practice phone number listed in the NPPES registry for William Barker is (903) 315-4880.
- Does William Barker accept Medicare?
- William Barker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Barker's NPI active?
- Yes — William Barker's NPI (1457501025) is active in the NPPES registry as of the last update on 2015-10-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.