MATTHEW WARREN MD
NPI 1861825499
Internal Medicine - Adult Congenital Heart Disease in Indianapolis, IN
About Matthew Warren Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MATTHEW WARREN MD (NPI 1861825499) is an individual adult congenital heart disease provider in Indianapolis, Indiana, licensed in Indiana (01101120A) and active in the NPI registry since August 2013. He is enrolled in Medicare PECOS and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 5
Secondary Practice Locations 3
Other Identifiers 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 (PECOS)
Matthew Warren Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Matthew Warren reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 5,212 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.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
INDIANAPOLIS, IN 46202
INDIANAPOLIS, IN 46202
INDIANAPOLIS, IN 46202
INDIANAPOLIS, IN 46202
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 Matthew Warren's NPI number?
The NPI number for Matthew Warren is 1861825499. It was assigned to this individual provider in the NPPES registry on August 19, 2013.
Where is Matthew Warren located?
Matthew Warren practices at 1801 N Senate Blvd Ste 2000, Indianapolis, IN 46202. The listed phone number is (317) 962-9700.
What is Matthew Warren's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Adult Congenital Heart Disease, with taxonomy code 207RA0002X.
Is Matthew Warren enrolled in Medicare?
Yes. Matthew Warren is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Matthew Warren's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Warren reassigns Medicare benefits to Iu Health Medical Group, LLC (Indianapolis, IN). The 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 Matthew Warren's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Matthew Warren accept?
Health plans from Anthem Blue Cross and Blue Shield list Matthew Warren 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.
When was this NPI record last updated?
The NPPES record for Matthew Warren was last updated on October 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days 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.
# Matthew Warren, MD · NPI 1861825499
Adult Congenital Heart Disease physician in Indianapolis, Indiana. Individual provider, active in the CMS NPPES registry since August 19, 2013.
## Identity
- **NPI:** 1861825499 (Entity type: Individual)
- **Enumerated:** August 19, 2013
- **Primary specialty:** Internal Medicine - Adult Congenital Heart Disease · taxonomy 207RA0002X
- **State license:** 01101120A (Indiana)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1801 N SENATE BLVD STE 2000, Indianapolis, IN 46202-1252
- **Phone:** (317) 962-9700
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Iu Health Medical Group, LLC (NPI 1326893777, Indianapolis, IN), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 6, 2026
- **Other identifiers:** Medicaid 300137240 (IN)
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Source: [NPI Profile](https://npiprofile.com/npi/1861825499) · Data from the CMS NPPES public registry.