Gregory Warner, MD

Sleep Medicine

19+ years in practiceNPI: 1699810689Licensed in CA

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Credentials & Recognition

Specialties

Sleep Medicine

NPI sub-specialties

Internal Medicine207R00000X

Internal Medicine, Pulmonary Disease207RP1001X

Internal Medicine, Sleep Medicine207RS0012X

Internal Medicine, Critical Care Medicine207RC0200X

Practice Signals

Editorial signals beyond credentials. Patient transparency over opacity. See methodology.

Mid-Level (PA/NP) Use

Doctor-led visits

Years in Practice

19+ years

Estimated from NPI enumeration date

Featured in PBCMMG Rankings

#31

Top Sleep Medicine Doctors in California, 2026

Sleep Medicine · California · 2026

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Frequently Asked Questions about Dr. Gregory Warner, MD

Where does Dr. Gregory Warner, MD practice?+
Dr. Gregory Warner, MD practices in California, CA. 5400 W HILLSDALE AVE VISALIA, CA 932918222.
What is Dr. Gregory Warner, MD's phone number?+
Dr. Gregory Warner, MD's practice phone is 559-738-7511. Office contact information is verified on the PBCMMG profile.
What does Dr. Gregory Warner, MD specialize in?+
Dr. Gregory Warner, MD's primary specialty is Sleep Medicine.
Is Dr. Gregory Warner, MD board certified?+
Board certification status for Dr. Gregory Warner, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. Gregory Warner, MD been practicing?+
Dr. Gregory Warner, MD has been in active practice for 19+ years, based on NPI enumeration and state licensing records.
What is Dr. Gregory Warner, MD's NPI number?+
Dr. Gregory Warner, MD's National Provider Identifier (NPI) is 1699810689, registered in the federal NPPES registry.

Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards

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