DR. MARTHA ELISABETH LEONG DO, MSCR
NPI 1639490048
Pediatrics - Pediatric Cardiology in Chapel Hill, NC
About Dr. Martha Elisabeth Leong Do, Mscr NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARTHA ELISABETH LEONG DO, MSCR (NPI 1639490048) is an individual pediatric cardiology provider in Chapel Hill, North Carolina, licensed in Texas (W5860) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS, is affiliated with Unc Hospitals, and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Martha Elisabeth Leong Do, Mscr 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 Martha Leong reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chapel Hill, NC 27514
- Reassigned Medicare billing, North Carolina enrollment
- 1,337 clinicians in this Medicare group
Greensboro, NC 27401
- Reassigned Medicare billing, North Carolina enrollment
- 408 clinicians in this Medicare group
Rocky Mount, NC 27804
- Reassigned Medicare billing, North Carolina enrollment
- 205 clinicians in this Medicare group
Tyler, TX 75701
- Reassigned Medicare billing, Texas enrollment
- 5,299 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Unc Hospitals
Acute Care Hospitals · Chapel Hill, NCOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHAPEL HILL, NC 27599
CHAPEL HILL, NC 27599
CHAPEL HILL, NC 27599
CHAPEL HILL, NC 27599
CHAPEL HILL, NC 27599
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 Martha Leong's NPI number?
The NPI number for Martha Leong is 1639490048. It was assigned to this individual provider in the NPPES registry on June 21, 2010.
Where is Martha Leong located?
Martha Leong practices at 101 Manning Drive, Chapel Hill, NC 27599. The listed phone number is (984) 974-4601.
What is Martha Leong's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.
Is Martha Leong enrolled in Medicare?
Yes. Martha Leong 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 Martha Leong's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Martha Leong reassigns Medicare benefits to 4 organizations: Unc Physicians Network, LLC (Chapel Hill, NC), The Moses H. Cone Memorial Hospital Operating Corporation (Greensboro, NC), Nhcs Physicians Inc (Rocky Mount, NC) and The University Of Texas Southwestern Medical Center At Dallas (Tyler, TX). 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 Martha Leong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Martha Leong affiliated with any hospitals?
According to CMS data, Martha Leong is affiliated with Unc Hospitals.
When was this NPI record last updated?
The NPPES record for Martha Leong was last updated on September 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 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.
# Dr. Martha Elisabeth Leong, DO, MSCR · NPI 1639490048
Pediatric Cardiology physician in Chapel Hill, North Carolina. Individual provider, active in the CMS NPPES registry since June 21, 2010.
## Identity
- **NPI:** 1639490048 (Entity type: Individual)
- **Enumerated:** June 21, 2010
- **Primary specialty:** Pediatrics - Pediatric Cardiology · taxonomy 2080P0202X
- **State license:** W5860 (Texas)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 101 MANNING DRIVE, Chapel Hill, NC 27599-4159
- **Phone:** (984) 974-4601 · **Fax:** (984) 974-7440
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Unc Physicians Network, LLC (NPI 1699074773, Chapel Hill, NC); The Moses H. Cone Memorial Hospital Operating Corporation (NPI 1164438578, Greensboro, NC); Nhcs Physicians Inc (NPI 1003028630, Rocky Mount, NC); The University Of Texas Southwestern Medical Center At Dallas (NPI 1417099599, Tyler, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** September 30, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1639490048) · Data from the CMS NPPES public registry.