Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Warren J. Kortz, M.D.
Surgery Physician in Denver, CO · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1851489918
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Registry record
Entity type Individual (Type 1)
Name Warren J. Kortz
Credential M.D.
Sex Male
Practice address 2555 S Downing St, Ste. 130, Denver, CO, 80210
Phone (303) 777-7112
Fax (303) 722-0201
Enumeration date Oct 11, 2006
Last updated in NPPES Oct 11, 2012
Taxonomy & licenses
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 |
|---|---|---|---|
| 01265164 | Medicaid | CO | - |
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.
Frequently asked questions
What is the NPI number for Warren Kortz?
The National Provider Identifier (NPI) for Warren Kortz is 1851489918, a Type 1 (individual) record in the CMS NPPES registry.
Where does Warren Kortz 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 → Jeffrey Brent Medical Toxicology (Emergency Medicine) Physician · Denver, CO NPI 1558365114 Kenneth Kulig Medical Toxicology (Emergency Medicine) Physician · Denver, CO NPI 1578533782 Edward Cetaruk Medical Toxicology (Emergency Medicine) Physician · Denver, CO NPI 1578533154 Kathey Spence Physician Assistant · Denver, CO NPI 1073601050 Ryan Gaines Plastic Surgery within the Head & Neck (Otolaryngology) Physician · Denver, CO NPI 1295898187 Nadine Mikhaeel-Kamel Hematology & Oncology Physician · Denver, CO NPI 1316085939 Seth Reiner Radiation Oncology Physician · Denver, CO NPI 1497887624 Toxicology Associates Prof LLC Specialist · Denver, CO NPI 1275749350
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-11.