William Clearfield, DO
NPI 1437162864 · Family Medicine Physician · Sparks, NV
William Clearfield, DO is a Family Medicine Physician provider in Sparks, NV (NPI 1437162864).
Provider details
- NPI number
- 1437162864
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- OS004244L (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Progesterone, Micronizedbrand: Progesterone | 90 | 25 |
| Anastrozole | 65 | 20 |
| Testosterone Cypionate | 62 | 18 |
| Levothyroxine Sodium | 54 | 18 |
| Metformin Hcl | 43 | 13 |
| Minoxidil | 27 | — |
| Liothyronine Sodium | 26 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$49 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
- 2006-08-15
- Last updated
- 2013-08-26
Frequently asked questions
- What is William Clearfield's NPI number?
- William Clearfield's National Provider Identifier (NPI) is 1437162864, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Clearfield's specialty?
- William Clearfield is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Clearfield located?
- William Clearfield's practice location on file with NPPES is 1625 E Prater Way Ste 103, Sparks, NV 89434-8963.
- What is William Clearfield's phone number?
- The practice phone number listed in the NPPES registry for William Clearfield is (775) 750-2189.
- Is William Clearfield's NPI active?
- Yes — William Clearfield's NPI (1437162864) is active in the NPPES registry as of the last update on 2013-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.