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CATTAIL RIVER HEMATOLOGY & ONCOLOGY, INC.
NPI 1326363607
Internal Medicine - Hematology & Oncology in Olney, MD

Active since March 30, 2010
3418 OLANDWOOD CT, SUITE 111, OLNEY, MD 20832(301) 774-8198(301) 774-8199 Get Directions Write a Review

NPPES record last updated: March 30, 2010. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Cattail River Hematology & Oncology, Inc. NPPES

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

CATTAIL RIVER HEMATOLOGY & ONCOLOGY, INC. (NPI 1326363607) is a healthcare organization registered as a hematology & oncology in Olney, Maryland and active in the NPI registry since March 2010. The organization lists J. Garrett Reilly, Owner, as its authorized official.

NPPES Registry Identity

NPI1326363607
Entity TypeOrganization
Primary Taxonomy207RH0003X
Legal Business NameCATTAIL RIVER HEMATOLOGY & ONCOLOGY, INC.
Location Address3418 OLANDWOOD CT, SUITE 111Olney, MD 20832-1375
Mailing Address3418 Olandwood Ct, Suite 111Olney, MD 20832-1375 · (301) 774-8198 · Fax (301) 774-8199
Phone(301) 774-8198
Fax(301) 774-8199
Organization SubpartNo
Authorized OfficialJ. Garrett ReillyOwner · (301) 774-8198
Enumeration DateMarch 30, 2010
✔ NPI 1326363607 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in MD · D39190
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.
3418 OLANDWOOD CT, Olney, MD 20832
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Other Identifiers 1

Medicare PIN123640MD

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Cattail River Hematology & Oncology, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Cattail River Hematology & Oncology, Inc., which bills Medicare for the services this clinician delivers.

Clinician (1)

Joseph Reilly, M.D., PH.D.
Hematology/Oncology
NPI 1053392100
3418 OLANDWOOD CT SUITE 111
Olney, MD 20832
(301) 774-8198
✔ PECOS✔ Accepts MedicareSame address

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 Cattail River Hematology & Oncology, Inc.'s NPI number?

The NPI number for Cattail River Hematology & Oncology, Inc. is 1326363607. It was assigned to this organization in the NPPES registry on March 30, 2010.

Where is Cattail River Hematology & Oncology, Inc. located?

Cattail River Hematology & Oncology, Inc. is located at 3418 Olandwood Ct Suite 111, Olney, MD 20832. The listed phone number is (301) 774-8198.

What is Cattail River Hematology & Oncology, Inc.'s specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Cattail River Hematology & Oncology, Inc. enrolled in Medicare?

Yes. Cattail River Hematology & Oncology, Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Cattail River Hematology & Oncology, Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Hematology/Oncology) reassigns their Medicare billing to Cattail River Hematology & Oncology, Inc.. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Cattail River Hematology & Oncology, Inc. was last updated on March 30, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.