LAKI J ROUSOU M.D.
NPI 1871680918
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Springfield, MA
About Laki J Rousou M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LAKI J ROUSOU M.D. (NPI 1871680918) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Springfield, Massachusetts, licensed in Connecticut (54475) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Mercy Medical Ctr, and maintains a secondary practice location in Hartford.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Laki J Rousou M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
4Medicare enrollment records show Laki Rousou reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Springfield, MA 01104
- Reassigned Medicare billing, Massachusetts enrollment
- 298 clinicians in this Medicare group
Springfield, MA 01104
- Reassigned Medicare billing, Massachusetts enrollment
- 168 clinicians in this Medicare group
Springfield, MA 01199
- Reassigned Medicare billing, Massachusetts enrollment
- 1,537 clinicians in this Medicare group
Hartford, CT 06105
- Reassigned Medicare billing, Connecticut enrollment
- 1,186 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 15
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Medical Ctr
Acute Care Hospitals · Springfield, MAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 01104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SPRINGFIELD, MA 01104
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Laki Rousou's NPI number?
The NPI number for Laki Rousou is 1871680918. It was assigned to this individual provider in the NPPES registry on October 9, 2006.
Where is Laki Rousou located?
Laki Rousou practices at 299 Carew St Mercy Medical Center, Springfield, MA 01104. The listed phone number is (413) 748-9628.
What is Laki Rousou's specialty?
The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.
Is Laki Rousou enrolled in Medicare?
Yes. Laki Rousou is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Laki Rousou's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Laki Rousou reassigns Medicare benefits to 4 organizations: Riverbend Medical Group, Inc. (Springfield, MA), Mercy Inpatient Medical Associates Inc. (Springfield, MA), Baystate Medical Practices, Inc (Springfield, MA) and Trinity Health Of New England Provider Network Organization Inc (Hartford, CT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Laki Rousou's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Laki Rousou accept?
Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Laki Rousou as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Laki Rousou affiliated with any hospitals?
According to CMS data, Laki Rousou is affiliated with Mercy Medical Ctr.
When was this NPI record last updated?
The NPPES record for Laki Rousou was last updated on November 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.