Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ummekalsoom Rahman Malik, MD

Hematology & Oncology Physician in Lake Success, NY · enumerated 2005.

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

National Provider Identifier

1124021209

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Registry record

Entity type Individual (Type 1)

Name Ummekalsoom Rahman Malik

Credential MD

Sex Female

Practice address 410 Lakeville Rd, Ste 311, Lake Success, NY, 11042

Phone (516) 358-2400

Fax (516) 358-5454

Enumeration date May 23, 2005

Last updated in NPPES Sep 18, 2007

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 182743 (NY) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
40Q371	Other	NY	BCBS
4569862	Other	NY	AETNA
3C1548	Other	NY	PHS
8725486007	Other	NY	CIGNA
AA71681	Other	NY	MDNY
2503643	Other	NY	GHI
P378916	Other	NY	OXFORD
182743	Other	NY	HIP

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Ummekalsoom Malik?

Ummekalsoom Malik is registered in NPPES with the primary taxonomy of Hematology & Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Maureen Larkin Family Nurse Practitioner · Lake Success, NY NPI 1649273731 Francisco Garcia-Moreno Hematology & Oncology Physician · Lake Success, NY NPI 1144223264 Teresa Gibbons Adult Health Nurse Practitioner · Lake Success, NY NPI 1417950502 James Koppel Specialist · New Hyde Park, NY NPI 1972508489 Christine Duncan Obstetrics & Gynecology Physician · New Hyde Park, NY NPI 1306842497 David Magier Gastroenterology Physician · Lake Success, NY NPI 1285634196 Lake Success Ophthalmic Associates PC Ophthalmology Physician · New Hyde Park, NY NPI 1477546307 Robert Malkin Ophthalmology Physician · New Hyde Park, NY NPI 1851384762

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-09-18.