Chris Liakonis, DO
NPI 1437117512 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Marshfield, WI
Enrolled with Medicare as Practitioner - Thoracic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chris Liakonis, DO is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Marshfield, WI (NPI 1437117512).
Provider details
- NPI number
- 1437117512
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 5101012009 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
16 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) |
|---|---|---|
| Replacement of Aortic Valve Through the Skin and Femoral Artery33361 | 16 | $683 |
Typical Medicare-allowed amounts for these services range $683–$683 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$45 across 1 record (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
Additional practice locations (1)
- 1015 S Washington AveSaginaw, MI 48601-2556Phone: (989) 754-3000Fax: (989) 754-3016
Registry dates
- Enumerated
- 2006-05-01
- Last updated
- 2025-05-05
- Certified
- 2025-04-23
Frequently asked questions
- What is Chris Liakonis's NPI number?
- Chris Liakonis's National Provider Identifier (NPI) is 1437117512, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chris Liakonis's specialty?
- Chris Liakonis is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Chris Liakonis located?
- Chris Liakonis's practice location on file with NPPES is 1000 N Oak Avenue, Marshfield, WI 54449-5703.
- What is Chris Liakonis's phone number?
- The practice phone number listed in the NPPES registry for Chris Liakonis is (715) 387-5511.
- Does Chris Liakonis accept Medicare?
- Chris Liakonis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chris Liakonis's NPI active?
- Yes — Chris Liakonis's NPI (1437117512) is active in the NPPES registry as of the last update on 2025-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.