DR. GREGORY H JOHNSON MD
NPI 1952463762
Internal Medicine - Gastroenterology in Thousand Oaks, CA

Q: What is Gregory Johnson's NPI number?

The NPI number for Gregory Johnson is 1952463762. It was assigned to this individual provider in the NPPES registry on December 15, 2006.

Q: What is Gregory Johnson's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Q: When was this NPI record last updated?

The NPPES record for Gregory Johnson was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.

Active since December 15, 2006

227 W JANSS RD, #215, THOUSAND OAKS, CA 91360(805) 497-9597 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Dr. Gregory H Johnson Md NPPES

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

DR. GREGORY H JOHNSON MD (NPI 1952463762) is an individual gastroenterology provider in Thousand Oaks, California, licensed in California (G25258) and active in the NPI registry since December 2006.

NPPES Registry Identity

NPI1952463762

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameDR. GREGORY H JOHNSONCredential: MD

Location Address227 W JANSS RD, #215Thousand Oaks, CA 91360-1848

Mailing Address227 W Janss Rd, #215Thousand Oaks, CA 91360-1848 · (805) 497-9597

Phone(805) 497-9597

Sole ProprietorNo

Enumeration DateDecember 15, 2006

Last NPPES UpdateJuly 8, 2007

✔ NPI 1952463762 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in CA · G25258

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

227 W JANSS RD, Thousand Oaks, CA 91360

Open in Google Maps ↗

Other Identifiers 1

Medicare UPINA90931CA

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.

KELSEY LINDSEY NP

Family Medicine

227 W JANSS RD
THOUSAND OAKS, CA 91360

Ventura County (805) 795-7296

PAUL L. DUDLEY M.D.

Psychiatry & Neurology (Neurology)

227 W JANSS RD, #135
THOUSAND OAKS, CA 91360

Ventura County (805) 373-2890

DR. RICHARD LESSMAN M.D.

Internal Medicine (Nephrology)

227 W JANSS RD, SUITE 110
THOUSAND OAKS, CA 91360

Ventura County (805) 496-6051

CALIFORNIA KIDNEY MEDICAL GROUP INC

Internal Medicine (Nephrology)

227 W JANSS RD, SUITE 110
THOUSAND OAKS, CA 91360

Ventura County (805) 496-6051

JASON CHEN-SHAN LEE M.D.

Radiology (Diagnostic Radiology)

227 W JANSS RD, #150
THOUSAND OAKS, CA 91360

Ventura County (805) 496-7755

DR. MARK E. MERRIMAN M.D.

Anesthesiology

227 W JANSS RD, STE 240
THOUSAND OAKS, CA 91360

Ventura County (805) 371-0455

DR. FRANCOISE GIAO PHUONG MENTEER MD

Internal Medicine

227 W JANSS RD, SUITE 305
THOUSAND OAKS, CA 91360

Ventura County (805) 449-4181

DR. HARRY J COZEN M.D.

Anesthesiology

227 W JANSS RD
THOUSAND OAKS, CA 91360

Ventura County (805) 371-0455

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 Gregory Johnson's NPI number?

The NPI number for Gregory Johnson is 1952463762. It was assigned to this individual provider in the NPPES registry on December 15, 2006.

Where is Gregory Johnson located?

Gregory Johnson practices at 227 W Janss Rd #215, Thousand Oaks, CA 91360. The listed phone number is (805) 497-9597.

What is Gregory Johnson's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for Gregory Johnson was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.