Robert Williams, ARNP
NPI 1538610001 · Adult Health Nurse Practitioner · Winter Haven, FL
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Williams, ARNP is a Adult Health Nurse Practitioner provider in Winter Haven, FL (NPI 1538610001).
Provider details
- NPI number
- 1538610001
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP
- Sex
- Male
- Sole proprietor
- No
- License
- 9180843 (FL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
9 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
138 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 | 47 | $106 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 39 | $9 |
| 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 | 20 | $14 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 17 | $75 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 15 | $106 |
Typical Medicare-allowed amounts for these services range $9–$106 (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 · 165 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 917 | 307 |
| Amlodipine Besylate | 598 | 197 |
| Losartan Potassium | 575 | 187 |
| Lisinopril | 569 | 177 |
| Levothyroxine Sodium | 538 | 147 |
| Gabapentin | 436 | 130 |
| Hydrochlorothiazide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$103 across 6 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
Additional practice locations (1)
- 409 Tallulah RdRobbinsville, NC 28771-8500Phone: (828) 479-6434Fax: (828) 479-2674
Registry dates
- Enumerated
- 2016-10-20
- Last updated
- 2025-12-10
- Certified
- 2025-12-10
Frequently asked questions
- What is Robert Williams's NPI number?
- Robert Williams's National Provider Identifier (NPI) is 1538610001, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Williams's specialty?
- Robert Williams is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Robert Williams located?
- Robert Williams's practice location on file with NPPES is 550 Pope Ave Nw Ste 300, Winter Haven, FL 33881-4679.
- What is Robert Williams's phone number?
- The practice phone number listed in the NPPES registry for Robert Williams is (863) 299-2636.
- Does Robert Williams accept Medicare?
- Robert Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Williams's NPI active?
- Yes — Robert Williams's NPI (1538610001) is active in the NPPES registry as of the last update on 2025-12-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.