William Davis, MD
NPI 1013909225 · Specialist · Santa Ana, CA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Davis, MD is a Specialist provider in Santa Ana, CA (NPI 1013909225).
Provider details
- NPI number
- 1013909225
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G69230 (CA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
524 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 147 | $217 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 94 | $81 |
| Critical Care, Each Additional 30 Minutes99292 | 62 | $109 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 61 | $51 |
| Ultrasound Scan of Chest76604 | 51 | $26 |
| Limited Ultrasound Scan of Abdomen76705 | 50 | $29 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-08-16
- Last updated
- 2009-01-15
Frequently asked questions
- What is William Davis's NPI number?
- William Davis's National Provider Identifier (NPI) is 1013909225, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Davis's specialty?
- William Davis is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is William Davis located?
- William Davis's practice location on file with NPPES is 2010 E 1st St, Santa Ana, CA 92705-4079.
- What is William Davis's phone number?
- The practice phone number listed in the NPPES registry for William Davis is (714) 542-6606.
- Does William Davis accept Medicare?
- William Davis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Davis's NPI active?
- Yes — William Davis's NPI (1013909225) is active in the NPPES registry as of the last update on 2009-01-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.