RENA RUIYU XIAN MD
NPI 1750525325
Pathology - Anatomic Pathology & Clinical Pathology in Baltimore, MD
About Rena Ruiyu Xian Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RENA RUIYU XIAN MD (NPI 1750525325) is an individual anatomic pathology & clinical pathology provider in Baltimore, Maryland, licensed in Maryland (D84801) and active in the NPI registry since April 2009. She is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of Other (2009).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Rena Ruiyu Xian Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Rena Xian reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21287
- Reassigned Medicare billing, Maryland enrollment
- 4,483 clinicians in this Medicare group
Baltimore, MD 21287
- Reassigned Medicare billing, District of Columbia enrollment
- 62 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 8
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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Johns Hopkins Hospital, The
Acute Care Hospitals · Baltimore, MDSuburban Hospital
Acute Care Hospitals · Bethesda, MDJohns Hopkins Bayview Medical Center
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21231 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21231
BALTIMORE, MD 21231
BALTIMORE, MD 21231
BALTIMORE, MD 21231
BALTIMORE, MD 21231
BALTIMORE, MD 21231
BALTIMORE, MD 21231
BALTIMORE, MD 21231
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 Rena Xian's NPI number?
The NPI number for Rena Xian is 1750525325. It was assigned to this individual provider in the NPPES registry on April 28, 2009.
Where is Rena Xian located?
Rena Xian practices at 401 North Broadway Weinberg 2237, Baltimore, MD 21231. The listed phone number is (215) 662-4829.
What is Rena Xian's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.
Is Rena Xian enrolled in Medicare?
Yes. Rena Xian is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Rena Xian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rena Xian reassigns Medicare benefits to 2 organizations: Johns Hopkins University (Baltimore, MD) and Johns Hopkins University (Baltimore, MD). 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 Rena Xian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Rena Xian affiliated with any hospitals?
According to CMS data, Rena Xian is affiliated with Johns Hopkins Hospital, The, Suburban Hospital and Johns Hopkins Bayview Medical Center.
When was this NPI record last updated?
The NPPES record for Rena Xian was last updated on March 30, 2023. 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.
# Rena Ruiyu Xian, MD · NPI 1750525325
Anatomic Pathology & Clinical Pathology physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since April 28, 2009.
## Identity
- **NPI:** 1750525325 (Entity type: Individual)
- **Enumerated:** April 28, 2009
- **Primary specialty:** Pathology - Anatomic Pathology & Clinical Pathology · taxonomy 207ZP0102X
- **State license:** D84801 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 401 NORTH BROADWAY, WEINBERG 2237, Baltimore, MD 21231
- **Phone:** (215) 662-4829
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Johns Hopkins University (NPI 1881694453, Baltimore, MD); Johns Hopkins University (NPI 1477540904, Baltimore, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** March 30, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1750525325) · Data from the CMS NPPES public registry.