Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Kenneth S Greenberg, D.O.

Infectious Disease Physician in Denver, CO · enumerated 2005.

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

National Provider Identifier

1972587228

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Kenneth S Greenberg

Credential D.O.

Sex Male

Practice address 4545 E 9th Ave, Suite 120, Denver, CO, 80220

Phone (303) 393-8050

Fax (303) 320-1953

Enumeration date Nov 30, 2005

Last updated in NPPES Dec 29, 2009

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 32546 (CO) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Kenneth Greenberg?

The National Provider Identifier (NPI) for Kenneth Greenberg is 1972587228, a Type 1 (individual) record in the CMS NPPES registry.

Where does Kenneth Greenberg practice?

The practice location on file with NPPES is in Denver, CO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-12-29.