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Maryland Oncology Hematology P.A.

Hematology & Oncology Physician in Columbia, MD · enumerated 2006 · authorized official Nicholas Koutrelakos, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1396710703

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Registry record

Entity type Organization (Type 2)
Legal business name Maryland Oncology Hematology P.A.
Practice address 10710 Charter Drive, Suite G020, Columbia, MD, 21044
Phone (410) 964-2212
Fax (410) 964-0380
Enumeration date Feb 20, 2006
Last updated in NPPES Dec 7, 2010

Taxonomy & classification

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Nicholas Koutrelakos
Title President
Phone (410) 964-2212

Other identifiers

Identifier Type State Issuer
400899500 Medicaid MD -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What type of organization is Maryland Oncology Hematology P.A.?
Maryland Oncology Hematology P.A. is registered in NPPES as a Hematology & Oncology Physician (its primary provider taxonomy).
What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-12-07.