John Williams, APRN-FNP
NPI 1003540626 · Family Nurse Practitioner · Baton Rouge, LA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Williams, APRN-FNP is a Family Nurse Practitioner provider in Baton Rouge, LA (NPI 1003540626).
Provider details
- NPI number
- 1003540626
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN-FNP
- Sex
- Male
- Sole proprietor
- Yes
- License
- 225293 (LA)
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
3 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
142 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 | 46 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 33 | $99 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 30 | $132 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus87426 | 18 | $31 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 15 | $11 |
Typical Medicare-allowed amounts for these services range $11–$132 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 32 | 32 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 23 | 23 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 22 | 22 |
| Methylprednisolone | 21 | 20 |
| Ibuprofen | 20 | 20 |
| Mupirocin | 15 | 15 |
| Methocarbamol | 14 | 14 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19 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
Registry dates
- Enumerated
- 2022-07-11
- Last updated
- 2022-07-11
- Certified
- 2022-07-11
Frequently asked questions
- What is John Williams's NPI number?
- John Williams's National Provider Identifier (NPI) is 1003540626, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Williams's specialty?
- John Williams is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is John Williams located?
- John Williams's practice location on file with NPPES is 5800 One Perkins Place Dr Ste a, Baton Rouge, LA 70808-9113.
- What is John Williams's phone number?
- The practice phone number listed in the NPPES registry for John Williams is (225) 224-8690.
- Does John Williams accept Medicare?
- John Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Williams's NPI active?
- Yes — John Williams's NPI (1003540626) is active in the NPPES registry as of the last update on 2022-07-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.