HUIWEN CHEN MD
NPI 1134539612
Internal Medicine - Nephrology in Philadelphia, PA
About Huiwen Chen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HUIWEN CHEN MD (NPI 1134539612) is an individual nephrology provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD466157) and active in the NPI registry since May 2014. She is enrolled in Medicare PECOS, is affiliated with Hospital Of Univ Of Pennsylvania, and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses 3
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
Huiwen Chen 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 Reassignments
2Medicare enrollment records show Huiwen Chen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Philadelphia, PA 19104
- Reassigned Medicare billing, Pennsylvania enrollment
- 125 clinicians in this Medicare group
Pittsburgh, PA 15235
- Reassigned Medicare billing, Pennsylvania enrollment
- 7,114 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 7
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Hospital Of Univ Of Pennsylvania
Acute Care Hospitals · Philadelphia, PAPenn Presbyterian Medical Center
Acute Care Hospitals · Philadelphia, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19104 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.
PHILADELPHIA, PA 19104
PHILADELPHIA, PA 19104
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 Huiwen Chen's NPI number?
The NPI number for Huiwen Chen is 1134539612. It was assigned to this individual provider in the NPPES registry on May 5, 2014.
Where is Huiwen Chen located?
Huiwen Chen practices at 3400 Spruce St, Philadelphia, PA 19104. The listed phone number is (215) 662-2638.
What is Huiwen Chen's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Huiwen Chen enrolled in Medicare?
Yes. Huiwen Chen 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 Huiwen Chen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Huiwen Chen reassigns Medicare benefits to 2 organizations: University Of Penn - Medical Group (Philadelphia, PA) and University Of Pittsburgh Physicians (Pittsburgh, PA). 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 Huiwen Chen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Huiwen Chen accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Huiwen Chen 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 Huiwen Chen affiliated with any hospitals?
According to CMS data, Huiwen Chen is affiliated with Hospital Of Univ Of Pennsylvania and Penn Presbyterian Medical Center.
When was this NPI record last updated?
The NPPES record for Huiwen Chen was last updated on November 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Huiwen Chen, MD · NPI 1134539612
Nephrology physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since May 5, 2014.
## Identity
- **NPI:** 1134539612 (Entity type: Individual)
- **Enumerated:** May 5, 2014
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **State license:** MD466157 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 3400 SPRUCE ST, Philadelphia, PA 19104-4238
- **Phone:** (215) 662-2638 · **Fax:** (215) 349-5703
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): University Of Penn - Medical Group (NPI 1629181912, Philadelphia, PA); University Of Pittsburgh Physicians (NPI 1407985674, Pittsburgh, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** November 19, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1134539612) · Data from the CMS NPPES public registry.