Randall Williams, MD
NPI 1245261114 · General Practice Physician · Chico, CA
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Randall Williams, MD is a General Practice Physician provider in Chico, CA (NPI 1245261114).
Provider details
- NPI number
- 1245261114
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G068885 (CA)
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
19 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
24,387 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 3,721 | $91 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 2,026 | $9 |
| Hemoglobin A1c Level83036 | 1,274 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 1,212 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 1,189 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 1,134 | $13 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 190 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 1,563 | 455 |
| Levothyroxine Sodium | 756 | 204 |
| Amlodipine Besylate | 728 | 225 |
| Atorvastatin Calcium | 689 | 227 |
| Olmesartan Medoxomil | 634 | 192 |
| Tirzepatidebrand: Mounjaro | 585 | 87 |
| Famotidine |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,050 across 227 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
- 2006-07-06
- Last updated
- 2007-07-09
Frequently asked questions
- What is Randall Williams's NPI number?
- Randall Williams's National Provider Identifier (NPI) is 1245261114, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Randall Williams's specialty?
- Randall Williams is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Randall Williams located?
- Randall Williams's practice location on file with NPPES is 1040 Mangrove Ave, Chico, CA 95926-3509.
- What is Randall Williams's phone number?
- The practice phone number listed in the NPPES registry for Randall Williams is (530) 345-0064.
- Does Randall Williams accept Medicare?
- Randall Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Randall Williams's NPI active?
- Yes — Randall Williams's NPI (1245261114) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.