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Dr. Warren Martin Hern, M.D., M.P.H., PH.D.

Public Health & General Preventive Medicine Physician in Boulder, CO · enumerated 2009 · practices at Boulder Abortion Clinic PC.

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

National Provider Identifier

1396976726

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Registry record

Entity type Individual (Type 1)
Name Dr. Warren Martin Hern
Credential M.D., M.P.H., PH.D.
Sex Male
Practice address 1130 Alpine Avenue, Boulder, CO, 80304
Phone (303) 447-1361
Fax (303) 447-0020
Enumeration date Aug 3, 2009
Last updated in NPPES Aug 3, 2009

Taxonomy & licenses

2083P0901X Public Health & General Preventive Medicine Physician Allopathic & Osteopathic Physicians · License 15278 (CO) 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
04013439 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Warren Hern?
The National Provider Identifier (NPI) for Warren Hern is 1396976726, a Type 1 (individual) record in the CMS NPPES registry.
Where does Warren Hern practice?
The practice location on file with NPPES is in Boulder, CO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-08-03.