Brian Williams, PA-C
NPI 1598701914 · Physician Assistant · Porterville, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brian Williams, PA-C is a Physician Assistant provider in Porterville, CA (NPI 1598701914).
Provider details
- NPI number
- 1598701914
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- PA12516 (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 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
498 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 | 407 | $79 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 63 | $110 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 17 | $112 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 11 | $96 |
Typical Medicare-allowed amounts for these services range $79–$112 (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 · 36 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 67 | 59 |
| Prednisone | 63 | 57 |
| Trazodone Hcl | 62 | 18 |
| Levothyroxine Sodium | 47 | 21 |
| Hydrochlorothiazide | 33 | 14 |
| Atorvastatin Calcium | 28 | 15 |
| Metformin Hcl | 28 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,075 across 52 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
- 2006-06-22
- Last updated
- 2025-12-23
- Certified
- 2025-12-23
Frequently asked questions
- What is Brian Williams's NPI number?
- Brian Williams's National Provider Identifier (NPI) is 1598701914, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Williams's specialty?
- Brian Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Brian Williams located?
- Brian Williams's practice location on file with NPPES is 560 W Putnam Ave, Porterville, CA 93257-3269.
- What is Brian Williams's phone number?
- The practice phone number listed in the NPPES registry for Brian Williams is (559) 781-1665.
- Does Brian Williams accept Medicare?
- Brian Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brian Williams's NPI active?
- Yes — Brian Williams's NPI (1598701914) is active in the NPPES registry as of the last update on 2025-12-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.