Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Oncology-Hematology Infusion Therapy Inc

Hematology & Oncology Physician in Clinton, MD · enumerated 2006 · authorized official Harvey Katzen, President.

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

National Provider Identifier

1447291844

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Registry record

Entity type Organization (Type 2)

Legal business name Oncology-Hematology Infusion Therapy Inc

Practice address 8926 Woodyard Rd, Suite 602, Clinton, MD, 20735

Phone (301) 868-9552

Fax (301) 868-5339

Enumeration date Jun 9, 2006

Last updated in NPPES May 13, 2008

Taxonomy & classification

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Harvey Katzen

Title President

Phone (301) 868-9552

Other identifiers

Identifier	Type	State	Issuer
2203410C2	Other	-	MAMSI
M339	Other	MD	AMERICAID
B648	Other	DC	BC/BS DC
KP14ON	Other	MD	BC/BS OF MD
2203410C2	Other	MD	ALLIANCE
0458809	Other	-	AETNA HMO
173001100	Medicaid	MD	-
CA0518	Other	-	RR MEDICARE

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.

Read the full guide → Validate an NPI →

Frequently asked questions

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.

What type of organization is Oncology-Hematology Infusion Therapy Inc?

Oncology-Hematology Infusion Therapy Inc is registered in NPPES as a Hematology & Oncology Physician (its primary provider taxonomy).

Providers at this address

Browse all →

David Haidak Hematology & Oncology Physician · Clinton, MD NPI 1215933221 Jake Vrdoljak Radiological Physics Physician · Clinton, MD NPI 1619976230 Terrence Dwyer Rheumatology Physician · Clinton, MD NPI 1962499103 Laura Stanfield Medical Physician Assistant · Clinton, MD NPI 1972583904 Verne Kemerer Specialist · Clinton, MD NPI 1598745358 Philip Man Specialist · Clinton, MD NPI 1730169590 Paul Weiner Specialist · Clinton, MD NPI 1538149372 Jorge Garciala Specialist · Clinton, MD NPI 1023098878

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-13.