Hallie Williams, PA-C
NPI 1326515453 · Medical Physician Assistant · Pittsburgh, PA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hallie Williams, PA-C is a Medical Physician Assistant provider in Pittsburgh, PA (NPI 1326515453).
Provider details
- NPI number
- 1326515453
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- MA060068 (PA)
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
7 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
14 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 | 14 | $103 |
Typical Medicare-allowed amounts for these services range $103–$103 (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 · 41 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levetiracetam | 464 | 106 |
| Lamotrigine | 299 | 65 |
| Lacosamide | 220 | 35 |
| Topiramate | 205 | 22 |
| Zonisamide | 149 | 28 |
| Clonazepam | 126 | 18 |
| Divalproex Sodiumbrand: Divalproex Sodium Er | 111 | 14 |
| Oxcarbazepine | 98 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$31 across 2 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
- 2018-10-26
- Last updated
- 2022-02-17
- Certified
- 2022-02-17
Frequently asked questions
- What is Hallie Williams's NPI number?
- Hallie Williams's National Provider Identifier (NPI) is 1326515453, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hallie Williams's specialty?
- Hallie Williams is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Hallie Williams located?
- Hallie Williams's practice location on file with NPPES is 3471 5th Ave Ste 811, Pittsburgh, PA 15213-3232.
- What is Hallie Williams's phone number?
- The practice phone number listed in the NPPES registry for Hallie Williams is (412) 692-4920.
- Does Hallie Williams accept Medicare?
- Hallie Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hallie Williams's NPI active?
- Yes — Hallie Williams's NPI (1326515453) is active in the NPPES registry as of the last update on 2022-02-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.