Claire Williams, PA
NPI 1629719737 · Physician Assistant · Mason City, IA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Claire Williams, PA is a Physician Assistant provider in Mason City, IA (NPI 1629719737).
Provider details
- NPI number
- 1629719737
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
4 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
4,099 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) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 1,816 | $2 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 725 | $52 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 466 | $41 |
| Biopsy of Related Skin Growth, First Growth11102 | 276 | $21 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 179 | $13 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clobetasol Propionate | 63 | 43 |
| Triamcinolone Acetonide | 63 | 48 |
| Hydrocortisone | 59 | 38 |
| Betamethasone Dipropionate | 33 | 22 |
| Ketoconazole | 33 | 21 |
| Metronidazole | 27 | 19 |
| Doxycycline Hyclate | 25 | 19 |
| Apremilastbrand: Otezla | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$337 across 6 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
- 2022-04-05
- Last updated
- 2024-10-18
- Certified
- 2024-10-18
Frequently asked questions
- What is Claire Williams's NPI number?
- Claire Williams's National Provider Identifier (NPI) is 1629719737, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Claire Williams's specialty?
- Claire Williams is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Claire Williams located?
- Claire Williams's practice location on file with NPPES is 1421 4th St Sw, Mason City, IA 50401-2736.
- What is Claire Williams's phone number?
- The practice phone number listed in the NPPES registry for Claire Williams is (641) 428-2080.
- Does Claire Williams accept Medicare?
- Claire Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Claire Williams's NPI active?
- Yes — Claire Williams's NPI (1629719737) is active in the NPPES registry as of the last update on 2024-10-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.