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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David Michael Greenberg, MD

Ophthalmology Physician in Chicago, IL · enumerated 2006.

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

National Provider Identifier

1730282187

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Registry record

Entity type Individual (Type 1)
Name Dr. David Michael Greenberg
Credential MD
Sex Male
Practice address 6801 N California Ave, Chicago, IL, 60645
Phone (773) 743-4300
Fax (773) 743-5132
Enumeration date Sep 7, 2006
Last updated in NPPES Apr 26, 2021

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 036073310 (IL) 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
0001617514 Other IL BCBS
036073238 Medicaid IL -

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 NPI 1730282187 active?
Yes, as of the latest NPPES snapshot, NPI 1730282187 is active (record last updated 2021-04-26).
How do I verify David Greenberg's NPI record?
Cross-check NPI 1730282187 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-26.