William Sima, MD INC
NPI 1770505505 · Orthopaedic Surgery Physician · Templeton, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Sima, MD INC is a Orthopaedic Surgery Physician provider in Templeton, CA (NPI 1770505505).
Provider details
- NPI number
- 1770505505
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD INC
- Sex
- Male
- Sole proprietor
- Yes
- License
- G58221 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
2,352 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 | 638 | $126 |
| Physician Or Allowed Practitioner Supervision of a Patient Receiving Medicare-Covered Services Provided By a Participating Home Health Agency (patient Not Present) Requiring Complex and Multidisciplinary Care Modalities Involving Regular Physician Or AllowG0181 | 212 | $101 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 188 | $163 |
| X-Ray of Knee, 4 Or More Views73564 | 186 | $49 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 177 | $63 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Celecoxib | 180 | 111 |
| Ondansetron Hcl | 145 | 139 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 136 | 107 |
| Cephalexin | 115 | 103 |
| Mupirocin | 105 | 103 |
| Amoxicillin | 100 | 49 |
| Hydromorphone Hcl | 100 | 96 |
| Hydrocodone/Acetaminophen |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,137 across 19 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
- 2006-07-24
- Last updated
- 2015-05-28
Frequently asked questions
- What is William Sima's NPI number?
- William Sima's National Provider Identifier (NPI) is 1770505505, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Sima's specialty?
- William Sima is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is William Sima located?
- William Sima's practice location on file with NPPES is 322 Posada Lane, Templeton, CA 93465.
- What is William Sima's phone number?
- The practice phone number listed in the NPPES registry for William Sima is (805) 434-5555.
- Does William Sima accept Medicare?
- William Sima is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Sima's NPI active?
- Yes — William Sima's NPI (1770505505) is active in the NPPES registry as of the last update on 2015-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.