Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Oncology-Hematology Associates PA

Hematology & Oncology Physician in Clinton, MD · enumerated 2006 · authorized official David Haidak, President.

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

National Provider Identifier

1962443317

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Registry record

Entity type Organization (Type 2)

Legal business name Oncology-Hematology Associates PA

Practice address 8926 Woodyard Rd, Suite 201, Clinton, MD, 20735

Phone (301) 868-7911

Fax (301) 868-2285

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 David Haidak

Title President

Phone (301) 868-7911

Other identifiers

Identifier	Type	State	Issuer
S237ON	Other	MD	BC/BS OF MD
596635	Other	-	AETNA HMO
6062354	Other	-	TRIGON
M338	Other	MD	AMERICAID
25410MD2	Other	MD	ALLIANCE
CE1101	Other	-	RR MEDICARE
022118900	Medicaid	DC	-
0281	Other	DC	BC/BS DC
1399476	Other	-	UNITED HEALTHCARE
96907 1900	Medicaid	MD	-
25410MD2	Other	-	MAMSI

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-05-13. Verify at npiregistry.cms.hhs.gov.

Where is Oncology-Hematology Associates PA located?

The practice location on file with NPPES is in Clinton, MD.

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.