CATHERINE C GU MD
NPI 1013478833
Urology in Langhorne, PA
About Catherine C Gu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CATHERINE C GU MD (NPI 1013478833) is an individual urology provider in Langhorne, Pennsylvania, licensed in Pennsylvania (MD490018) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, is affiliated with St Mary Medical Center, and is a graduate of Perelman School Of Med At The University Of Pennsylvania (2019).
NPPES Registry Identity
Specialties & Licenses
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
Catherine C Gu Md 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 Reassignment
Medicare enrollment records show Catherine Gu reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Langhorne, PA 19047
- Reassigned Medicare billing, Pennsylvania enrollment
- 646 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.
St Mary Medical Center
Acute Care Hospitals · Langhorne, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19047 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 14
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LANGHORNE, PA 19047
LANGHORNE, PA 19047
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 Catherine Gu's NPI number?
The NPI number for Catherine Gu is 1013478833. It was assigned to this individual provider in the NPPES registry on March 26, 2019.
Where is Catherine Gu located?
Catherine Gu practices at 1203 Langhorne Newtown Rd Ste 225, Langhorne, PA 19047. The listed phone number is (215) 710-4490.
What is Catherine Gu's specialty?
The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.
Is Catherine Gu enrolled in Medicare?
Yes. Catherine Gu 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 organization bills Medicare for Catherine Gu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Gu reassigns Medicare benefits to Trinity Health Mid-Atlantic Medical Group (Langhorne, PA). 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 Catherine Gu's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Catherine Gu accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Catherine Gu 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 Catherine Gu affiliated with any hospitals?
According to CMS data, Catherine Gu is affiliated with St Mary Medical Center.
When was this NPI record last updated?
The NPPES record for Catherine Gu was last updated on July 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.
# Catherine C Gu, MD · NPI 1013478833
Urology physician in Langhorne, Pennsylvania. Individual provider, active in the CMS NPPES registry since March 26, 2019.
## Identity
- **NPI:** 1013478833 (Entity type: Individual)
- **Enumerated:** March 26, 2019
- **Primary specialty:** Urology · taxonomy 208800000X
- **State license:** MD490018 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 1203 LANGHORNE NEWTOWN RD STE 225, Langhorne, PA 19047-1237
- **Phone:** (215) 710-4490
## 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:** Trinity Health Mid-Atlantic Medical Group (NPI 1306233895, Langhorne, PA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Perelman School Of Med At The University Of Pennsylvania, class of 2019
## Record status
- **NPPES last updated:** July 10, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1013478833) · Data from the CMS NPPES public registry.