Matthew Williams, PA
NPI 1891392643 · Physician Assistant · Hanford, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Williams, PA is a Physician Assistant provider in Hanford, CA (NPI 1891392643).
Provider details
- NPI number
- 1891392643
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- PA58583 (CA)
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 tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
518 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 121 | $102 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 111 | $134 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 62 | $89 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 55 | $73 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 48 | $16 |
| Automated Urinalysis Test81003 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 344 | 330 |
| Cephalexin | 89 | 88 |
| Ibuprofen | 80 | 79 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 46 | 44 |
| Doxycycline Hyclate | 30 | 30 |
| Cyclobenzaprine Hcl | 29 | 29 |
| Fluconazole | 20 | 19 |
| Diclofenac Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-10-05
- Last updated
- 2020-10-05
- Certified
- 2020-10-01
Frequently asked questions
- What is Matthew Williams's NPI number?
- Matthew Williams's National Provider Identifier (NPI) is 1891392643, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Williams's specialty?
- Matthew Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Matthew Williams located?
- Matthew Williams's practice location on file with NPPES is Adventist Health Hanford, Hanford, CA 93230.
- What is Matthew Williams's phone number?
- The practice phone number listed in the NPPES registry for Matthew Williams is (559) 582-9000.
- Does Matthew Williams accept Medicare?
- Matthew Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Williams's NPI active?
- Yes — Matthew Williams's NPI (1891392643) is active in the NPPES registry as of the last update on 2020-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.