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

MR. GEORGE GREGORY M.D.
NPI 1558310722
Anesthesiology in San Francisco, CA

Active since May 08, 2006
505 PARNASSUS AVE, SAN FRANCISCO, CA 94143(415) 476-2131(415) 476-9516 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mr. George Gregory M.d. NPPES

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

MR. GEORGE GREGORY M.D. (NPI 1558310722) is an individual anesthesiology provider in San Francisco, California, licensed in California (A21077) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1558310722
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameMR. GEORGE GREGORYCredential: M.D.
Location Address505 PARNASSUS AVESan Francisco, CA 94143-2204
Mailing Address1635 Divisadero St., Suite 625, Box 1821San Francisco, CA 94143-0001 · (415) 476-4029 · Fax (415) 476-4150
Phone(415) 476-2131
Fax(415) 476-9516
Sole ProprietorNo
Enumeration DateMay 8, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1558310722 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CA · A21077
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.
505 PARNASSUS AVE, San Francisco, CA 94143
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Other Identifiers 1

Medicaid00A210770CA

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.

CATHERINE RAMSDELL NNP
Nurse Practitioner (Neonatal)
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-1000
DR. CLAUDIO ANDRES BRAVO CARRILLO M.D.
Internal Medicine (Advanced Heart Failure and Transplant Cardiology)
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 502-4243
MAURICIO JALIFE BUCAY M.D
Hospitalist
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 750-4994
EMMA B SHAK M.D.
Student in an Organized Health Care Education/Training Program
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-1528
DR. ADRIANA A.T. MARTIN M.D., PH.D.
Internal Medicine
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 514-7288
WILLIAM JAMES DEARDORFF
Internal Medicine (Geriatric Medicine)
505 PARNASSUS AVE, 15 LONG
SAN FRANCISCO, CA 94143
San Francisco County (415) 406-1417
KEERTHANA REDDY BANALA
Student in an Organized Health Care Education/Training Program
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 514-7288
ROBERT CHRISTIAN WENZ
Nurse Anesthetist, Certified Registered
505 PARNASSUS AVE
SAN FRANCISCO, CA 94143
San Francisco County (415) 353-8054

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 George Gregory's NPI number?

The NPI number for George Gregory is 1558310722. It was assigned to this individual provider in the NPPES registry on May 8, 2006.

Where is George Gregory located?

George Gregory practices at 505 Parnassus Ave, San Francisco, CA 94143. The listed phone number is (415) 476-2131.

What is George Gregory'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 George Gregory 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 29 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.