Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JEFFREY MICHAEL GAYNOR MD
NPI 1164473716
Anesthesiology in Daly City, CA

Active since May 16, 2006
1900 SULLIVAN AVE, DALY CITY, CA 94015(650) 992-4000 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Jeffrey Michael Gaynor Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JEFFREY MICHAEL GAYNOR MD (NPI 1164473716) is an individual anesthesiology provider in Daly City, California, licensed in California (C37015) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1164473716
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameJEFFREY MICHAEL GAYNORCredential: MD
Location Address1900 SULLIVAN AVEDaly City, CA 94015-2200
Mailing AddressPo Box 7793San Francisco, CA 94120-7793 · (503) 372-2740 · Fax (503) 372-2754
Sole ProprietorNo
Enumeration DateMay 16, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1164473716 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License Licensed in CA · C37015
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
1900 SULLIVAN AVE, Daly City, CA 94015

Other Identifiers 1

Medicaid00C370150CA

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Internal Medicine
1900 SULLIVAN AVE, LOWER LEVEL
DALY CITY, CA 94015
General Acute Care Hospital
1900 SULLIVAN AVE
DALY CITY, CA 94015
Emergency Medicine
1900 SULLIVAN AVE
DALY CITY, CA 94015
Radiology (Radiation Oncology)
1900 SULLIVAN AVE, RADIATION ONCOLOGY DEPT
DALY CITY, CA 94015
Internal Medicine
1900 SULLIVAN AVE, LOWER LEVEL
DALY CITY, CA 94015
Emergency Medicine
1900 SULLIVAN AVE
DALY CITY, CA 94015
Emergency Medicine
1900 SULLIVAN AVE
DALY CITY, CA 94015
Nurse Practitioner (Family)
1900 SULLIVAN AVE
DALY CITY, CA 94015

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Jeffrey Gaynor's NPI number?

The NPI number for Jeffrey Gaynor is 1164473716. It was assigned to this individual provider in the NPPES registry on May 16, 2006.

Where is Jeffrey Gaynor located?

Jeffrey Gaynor practices at 1900 Sullivan Ave, Daly City, CA 94015. The listed phone number is (650) 992-4000.

What is Jeffrey Gaynor's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

When was this NPI record last updated?

The NPPES record for Jeffrey Gaynor was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.