Arthur Williams, MD
NPI 1811949753 · Internal Medicine Physician · Huntsville, AL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Arthur Williams, MD is a Internal Medicine Physician provider in Huntsville, AL (NPI 1811949753).
Provider details
- NPI number
- 1811949753
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 021846 (AL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 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
106 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 | 77 | $97 |
| Hemoglobin A1c Level83036 | 29 | $10 |
Typical Medicare-allowed amounts for these services range $10–$97 (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 · 71 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 171 | 68 |
| Atorvastatin Calcium | 135 | 58 |
| Losartan Potassium | 108 | 46 |
| Omeprazole | 96 | 35 |
| Levothyroxine Sodium | 93 | 41 |
| Simvastatin | 78 | 32 |
| Pantoprazole Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$116 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
- 2006-05-17
- Last updated
- 2010-06-30
Frequently asked questions
- What is Arthur Williams's NPI number?
- Arthur Williams's National Provider Identifier (NPI) is 1811949753, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Arthur Williams's specialty?
- Arthur Williams is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Arthur Williams located?
- Arthur Williams's practice location on file with NPPES is 1 Hospital Dr Sw, Huntsville, AL 35801-6455.
- What is Arthur Williams's phone number?
- The practice phone number listed in the NPPES registry for Arthur Williams is (125) 688-2000.
- Does Arthur Williams accept Medicare?
- Arthur Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Arthur Williams's NPI active?
- Yes — Arthur Williams's NPI (1811949753) is active in the NPPES registry as of the last update on 2010-06-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.