Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Gregory C Warner, MD

Individual provider Internal Medicine Physician · NPI 1699810689

Gregory C Warner, MD is a Pulmonary Disease in Visalia, California. Graduated from University of Nebraska College of Medicine in 1980, 46 years ago. Practices as a sole proprietor, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
46
Trained at
University of Nebraska College of Medicine
Licensed in
CA
In the registry since
2007
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

5400 W Hillsdale Ave
Visalia, CA 93291-8222
Phone: (559) 738-7511
Fax: (559) 739-2007
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1303 E Herndon Ave, Fresno, CA 93720-3309 — (559) 450-5672

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence G55305 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence G55305 (CA)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence G55305 (CA)
Sleep Medicine (Internal Medicine) Physician Taxonomy 207RS0012X · Licence G55305 (CA)

Record details

NPI number1699810689
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 20, 2007
Last updated in NPPESOctober 23, 2024
Certification dateOctober 23, 2024
Mailing address5400 W Hillsdale Ave, Visalia, CA 93291-8222

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS), INTERNAL MEDICINE, SLEEP MEDICINE
Medical schoolUNIVERSITY OF NEBRASKA COLLEGE OF MEDICINE
Graduated 1980 (46 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

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