Lillian Williams, PA-C
NPI 1952501447 · Physician Assistant · Mcallen, TX
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lillian Williams, PA-C is a Physician Assistant provider in Mcallen, TX (NPI 1952501447).
Provider details
- NPI number
- 1952501447
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 1077607 (TX)
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
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
573 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 | 189 | $78 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 85 | $95 |
| Removal of Impacted Ear Wax69210 | 70 | $41 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 42 | $111 |
| Ct Scan of Face Without Contrast70486 | 39 | $96 |
| Test to Assess Middle Ear Function92567 | 34 | $14 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azelastine Hcl | 355 | 238 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 275 | 269 |
| Cefdinir | 185 | 157 |
| Fluticasone Propionate | 164 | 116 |
| Azithromycin | 84 | 75 |
| Ipratropium Bromide | 78 | 41 |
| Ofloxacin | 72 | 66 |
| Omeprazole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,736 across 76 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
Additional practice locations (2)
- 2601 Cornerstone BlvdEdinburg, TX 78539-8479Phone: (956) 664-1440Fax: (956) 664-1450
- 510 Victoria Ln Ste 5Harlingen, TX 78550-3231Phone: (956) 428-4221Fax: (956) 421-5709
Registry dates
- Enumerated
- 2007-07-23
- Last updated
- 2020-06-26
- Certified
- 2020-06-26
Frequently asked questions
- What is Lillian Williams's NPI number?
- Lillian Williams's National Provider Identifier (NPI) is 1952501447, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lillian Williams's specialty?
- Lillian Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Lillian Williams located?
- Lillian Williams's practice location on file with NPPES is 2101 S Cynthia St, Mcallen, TX 78503.
- What is Lillian Williams's phone number?
- The practice phone number listed in the NPPES registry for Lillian Williams is (956) 687-7896.
- Does Lillian Williams accept Medicare?
- Lillian Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lillian Williams's NPI active?
- Yes — Lillian Williams's NPI (1952501447) is active in the NPPES registry as of the last update on 2020-06-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.