POTOMAC ONCOLOGY & HEMATOLOGY, LLC
NPI 1962947937
Internal Medicine - Hematology & Oncology in Rockville, MD
About Potomac Oncology & Hematology, Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
POTOMAC ONCOLOGY & HEMATOLOGY, LLC (NPI 1962947937) is a healthcare organization registered as a hematology & oncology in Rockville, Maryland and active in the NPI registry since December 2016. The organization lists James Xu, Physician-owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Potomac Oncology & Hematology, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
5Medicare enrollment records show 5 clinicians reassign Medicare billing to Potomac Oncology & Hematology, LLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 3 within 10 miles. They are listed nearest first.
Clinicians, nearest first (5)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Potomac Oncology & Hematology, LLC's NPI number?
The NPI number for Potomac Oncology & Hematology, LLC is 1962947937. It was assigned to this organization in the NPPES registry on December 30, 2016.
Where is Potomac Oncology & Hematology, LLC located?
Potomac Oncology & Hematology, LLC is located at 6000 Executive Blvd Suite 501, Rockville, MD 20852. The listed phone number is (240) 618-0275.
What is Potomac Oncology & Hematology, LLC's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Potomac Oncology & Hematology, LLC enrolled in Medicare?
Yes. Potomac Oncology & Hematology, LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Potomac Oncology & Hematology, LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 2 Medicare specialties reassign their Medicare billing to Potomac Oncology & Hematology, LLC. A 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 the clinician's services. The largest specialties are Nurse Practitioner (4) and Hematology/Oncology (1). Of these, 1 practice at this address and 3 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Potomac Oncology & Hematology, LLC accept?
Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter Health of Delaware, Ambetter from Absolute Total Care and Ambetter from Arkansas Health & Wellness and 26 other insurers list Potomac Oncology & Hematology, LLC 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 Potomac Oncology & Hematology, LLC was last updated on January 11, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Potomac Oncology & Hematology, Llc · NPI 1962947937
Hematology & Oncology organization in Rockville, Maryland. Organization record, active in the CMS NPPES registry since December 30, 2016.
## Identity
- **NPI:** 1962947937 (Entity type: Organization)
- **Enumerated:** December 30, 2016
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **Organization subpart:** No
- **Authorized official:** James Xu, PHYSICIAN-OWNER
## Practice location
- **Address:** 6000 EXECUTIVE BLVD, SUITE 501, Rockville, MD 20852-3803
- **Phone:** (240) 618-0275
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 5 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (4), Hematology/Oncology (1); 1 practice at this address and 3 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 11, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1962947937) · Data from the CMS NPPES public registry.