1. Home
  2. Directory
  3. Maryland
  4. Germantown
  5. Internal Medicine
  6. NPI Profile

POTOMAC ONCOLOGY & HEMATOLOGY, LLC
NPI 1114770252
Internal Medicine - Hematology & Oncology in Germantown, MD

Active since April 09, 2024CLIA 21D2137901 · Certificate of Compliance
12800 MIDDLEBROOK RD STE 430, GERMANTOWN, MD 20874(240) 618-0275 Get Directions Write a Review

NPPES record last updated: April 9, 2024. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Potomac Oncology & Hematology, Llc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

POTOMAC ONCOLOGY & HEMATOLOGY, LLC (NPI 1114770252) is a healthcare organization registered as a hematology & oncology in Germantown, Maryland and active in the NPI registry since April 2024. The organization holds a CLIA Certificate of Compliance certificate valid through August 26, 2026 and lists James Xunhai Xu, Physician-owner, as its authorized official.

NPPES Registry Identity

NPI1114770252
Entity TypeOrganization
Primary Taxonomy207RH0003X
Legal Business NamePOTOMAC ONCOLOGY & HEMATOLOGY, LLC
Location Address12800 MIDDLEBROOK RD STE 430Germantown, MD 20874-5288
Mailing AddressPo Box 342039Bethesda, MD 20827-2039
Phone(240) 618-0275
Organization SubpartNo
Authorized OfficialJames Xunhai XuPhysician-owner · (240) 618-0275
Enumeration DateApril 9, 2024
NPPES CertifiedApril 9, 2024
✔ NPI 1114770252 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
12800 MIDDLEBROOK RD STE 430, Germantown, MD 20874
Open in Google Maps ↗

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

CLIA Laboratory Certificates CMS CLIA 2

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Compliance 21D2137901

Potomac Oncology And Hematology · Rockville, MD
Active · expires Aug 26, 2026
CLIA Number21D2137901
Laboratory TypePhysician Office
Certificate Effective DateAugust 27, 2024
Certificate Expiration DateAugust 26, 2026
Laboratory DirectorJames Xu
Laboratory Phone(240) 618-0275
Laboratory LocationPotomac Oncology And Hematology6000 Executive Blvd Suite 501, Rockville, MD 20852
CLIA data matches this NPI record on: Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

Certificate of Compliance 21D2230264

Potomac Oncology And Hematology · Germantown, MD
Expired · Jul 28, 2026
CLIA Number21D2230264
Laboratory TypePhysician Office
Certificate Effective DateJuly 29, 2024
Certificate Expiration DateJuly 28, 2026
Laboratory DirectorJames Xu
Laboratory Phone(240) 618-0275
Laboratory LocationPotomac Oncology And Hematology12800 Middlebrook Rd Suite 430, Germantown, MD 20874
CLIA data matches this NPI record on: Address Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

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 1114770252. It was assigned to this organization in the NPPES registry on April 9, 2024.

Where is Potomac Oncology & Hematology, LLC located?

Potomac Oncology & Hematology, LLC is located at 12800 Middlebrook Rd Ste 430, Germantown, MD 20874. 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.

Does Potomac Oncology & Hematology, LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 21D2137901) is associated with this NPI, valid through August 26, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Potomac Oncology & Hematology, LLC was last updated on April 9, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.