Allison Williams, PA-C
NPI 1073228862 · Physician Assistant · Danville, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Allison Williams, PA-C is a Physician Assistant provider in Danville, CA (NPI 1073228862).
Provider details
- NPI number
- 1073228862
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
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
3 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
599 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 251 | $81 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 140 | $101 |
| Exam of Ear Using a Microscope92504 | 85 | $28 |
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 | 54 | $179 |
| Diagnostic Exam of Voice Box Using a Flexible Endoscope31575 | 41 | $122 |
| Removal of Impacted Ear Wax69210 | 28 | $43 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 41 | 26 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 40 | 37 |
| Ciprofloxacin Hcl/Dexamethbrand: Ciprofloxacin-Dexamethasone | 20 | 18 |
| Omeprazole | 20 | 13 |
| Mupirocin | 19 | 15 |
| Azelastine Hcl | 18 | — |
| Ofloxacin | 16 | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-01-17
- Last updated
- 2023-01-17
- Certified
- 2023-01-17
Frequently asked questions
- What is Allison Williams's NPI number?
- Allison Williams's National Provider Identifier (NPI) is 1073228862, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Allison Williams's specialty?
- Allison Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Allison Williams located?
- Allison Williams's practice location on file with NPPES is 102 Creighton Way, Danville, CA 94506-6122.
- What is Allison Williams's phone number?
- The practice phone number listed in the NPPES registry for Allison Williams is (925) 683-2715.
- Does Allison Williams accept Medicare?
- Allison Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Allison Williams's NPI active?
- Yes — Allison Williams's NPI (1073228862) is active in the NPPES registry as of the last update on 2023-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.