Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Jeffrey Greenberg, M.D.

Pediatrics Physician in Rockville, MD · enumerated 2006.

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

National Provider Identifier

1326063587

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Registry record

Entity type Individual (Type 1)

Name Jeffrey Greenberg

Credential M.D.

Sex Male

Practice address Rockville, MD, 20852

Phone (301) 468-9225

Fax (301) 770-2863

Enumeration date Jul 12, 2006

Last updated in NPPES Jul 9, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License D0059573 (MD) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License MD32764 (DC) Secondary

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

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 Jeffrey Greenberg?

Jeffrey Greenberg is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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James Salander Vascular Surgery Physician · Rockville, MD NPI 1477559144 Yung-Hao Pung Pediatric Allergy/Immunology Physician · Rockville, MD NPI 1396733473 Mohsin Ijaz Cardiovascular Disease Physician · Rockville, MD NPI 1497728760 Setareh Vistamehr Specialist · Rockville, MD NPI 1699748590 Nandini Thillairajah Pediatrics Physician · Rockville, MD NPI 1093762197 Raymond Coleman Pediatric Adolescent Medicine Physician · Rockville, MD NPI 1669414769 Y Howard Pung MD PA Allergy & Immunology Physician · Rockville, MD NPI 1659306868 Advanced Cardiology Center Prosthetics Case Management · Rockville, MD NPI 1669495628

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