S. Christopher Malaisrie, M.D.
NPI 1801904008 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Cardiac Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
S. Christopher Malaisrie, M.D. is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Chicago, IL (NPI 1801904008).
Provider details
- NPI number
- 1801904008
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A95122 (CA)
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
19 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
257 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) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 93 | $178 |
| Replacement of Aortic Valve Through the Skin and Femoral Artery33361 | 41 | $864 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 30 | $136 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 26 | $193 |
| Replacement of Aortic Valve on Heart-Lung Machine33405 | 23 | $2,283 |
| Replacement of Mitral Valve on Heart-Lung Machine33430 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$26,914 across 51 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
Additional practice locations (1)
- 251 East Huron StGalter 3 150Chicago, IL 60611Phone: (312) 695-2517
Registry dates
- Enumerated
- 2006-08-28
- Last updated
- 2025-01-30
- Certified
- 2025-01-30
Frequently asked questions
- What is S. Christopher Malaisrie's NPI number?
- S. Christopher Malaisrie's National Provider Identifier (NPI) is 1801904008, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is S. Christopher Malaisrie's specialty?
- S. Christopher Malaisrie is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is S. Christopher Malaisrie located?
- S. Christopher Malaisrie's practice location on file with NPPES is 675 N Saint Clair St Ste 19-100, Chicago, IL 60611-5969.
- What is S. Christopher Malaisrie's phone number?
- The practice phone number listed in the NPPES registry for S. Christopher Malaisrie is (312) 664-3278.
- Does S. Christopher Malaisrie accept Medicare?
- S. Christopher Malaisrie is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is S. Christopher Malaisrie's NPI active?
- Yes — S. Christopher Malaisrie's NPI (1801904008) is active in the NPPES registry as of the last update on 2025-01-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.