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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.

DR. BENJAMIN AUGUST JOHNSON MD, MSC
NPI 1831789841
Emergency Medicine in Palo Alto, CA

Active since January 23, 2021
1199 WELCH RD, PALO ALTO, CA 94304(650) 723-5111 Get Directions Write a Review

NPPES record last updated: October 4, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Oct 4, 2026, Apr 7, 2023, Jan 23, 2021 (3 updates tracked since 2021).

About Dr. Benjamin August Johnson Md, Msc NPPES

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

DR. BENJAMIN AUGUST JOHNSON MD, MSC (NPI 1831789841) is an individual emergency medicine provider in Palo Alto, California, licensed in California (A207947) and active in the NPI registry since January 2021.

NPPES Registry Identity

NPI1831789841
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. BENJAMIN AUGUST JOHNSONCredential: MD, MSC
Location Address1199 WELCH RDPalo Alto, CA 94304-1905
Mailing Address900 Welch Rd Ste 350Palo Alto, CA 94304-1807 · (650) 723-6576
Phone(650) 723-5111
Sole ProprietorNo
Enumeration DateJanuary 23, 2021
Last NPPES UpdateOctober 4, 20263 updates tracked since enumeration
NPPES CertifiedOctober 4, 2026
✔ NPI 1831789841 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · A207947
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
1199 WELCH RD, Palo Alto, CA 94304
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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.

ELISSA MAUCK KLEIN MD
Student in an Organized Health Care Education/Training Program
1199 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 723-5111
DR. KAITLIN CLAIRE MACHINA MD
Emergency Medicine
1199 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 723-5111
BROCK ALLEN BURNETT
Student in an Organized Health Care Education/Training Program
1199 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 723-5111
STEPHEN HOEFLER
Registered Nurse
1199 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 723-5111
SUMMER GHAITH MD, JD
Emergency Medicine
1199 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 723-5111
CONRAD WILLIAM SAFRANEK MD
Student in an Organized Health Care Education/Training Program
1199 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 723-0121
DR. SAMMY MEHTAR MD, MS
Emergency Medicine
1199 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 723-6576
ERICA NICOLE SILVA
Student in an Organized Health Care Education/Training Program
1199 WELCH RD
PALO ALTO, CA 94304
Santa Clara County (650) 723-5111

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 Benjamin Johnson's NPI number?

The NPI number for Benjamin Johnson is 1831789841. It was assigned to this individual provider in the NPPES registry on January 23, 2021.

Where is Benjamin Johnson located?

Benjamin Johnson practices at 1199 Welch Rd, Palo Alto, CA 94304. The listed phone number is (650) 723-5111.

What is Benjamin Johnson's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

When was this NPI record last updated?

The NPPES record for Benjamin Johnson was last updated on October 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.