Leo Semkiw, M.D.
NPI 1215949110 · Specialist · San Jose, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leo Semkiw, M.D. is a Specialist provider in San Jose, CA (NPI 1215949110).
Provider details
- NPI number
- 1215949110
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G56561 (CA)
Specialties & taxonomies
Other Service Providers
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
1,331 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 | 330 | $111 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 267 | $86 |
| X-Ray of Knee, 4 Or More Views73564 | 255 | $64 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 179 | $155 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 84 | $134 |
| X-Ray of Shoulder, Minimum of 2 Views73030 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 63 | 43 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 54 | 22 |
| Meloxicam | 25 | — |
| Celecoxib | 15 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$141 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
- 2006-08-12
- Last updated
- 2008-11-14
Frequently asked questions
- What is Leo Semkiw's NPI number?
- Leo Semkiw's National Provider Identifier (NPI) is 1215949110, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leo Semkiw's specialty?
- Leo Semkiw is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Leo Semkiw located?
- Leo Semkiw's practice location on file with NPPES is 2430 Samaritan Dr, San Jose, CA 95124-3907.
- What is Leo Semkiw's phone number?
- The practice phone number listed in the NPPES registry for Leo Semkiw is (408) 371-5300.
- Does Leo Semkiw accept Medicare?
- Leo Semkiw is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leo Semkiw's NPI active?
- Yes — Leo Semkiw's NPI (1215949110) is active in the NPPES registry as of the last update on 2008-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.