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JOHN SULLIVAN MD
NPI 1558756262
Internal Medicine in Thousand Oaks, CA

Active since March 30, 2015
1 AMGEN CENTER DR, 38-4-C, THOUSAND OAKS, CA 91320(805) 447-4429 Get Directions Write a Review

NPPES record last updated: March 30, 2015. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About John Sullivan Md NPPES

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

JOHN SULLIVAN MD (NPI 1558756262) is an individual internal medicine provider in Thousand Oaks, California, licensed in California (50369) and active in the NPI registry since March 2015.

NPPES Registry Identity

NPI1558756262
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJOHN SULLIVANCredential: MD
Location Address1 AMGEN CENTER DR, 38-4-CThousand Oaks, CA 91320-1730
Mailing Address1 Amgen Center Dr, 38-4-cThousand Oaks, CA 91320-1730 · (805) 447-4429
Phone(805) 447-4429
Sole ProprietorYes
Enumeration DateMarch 30, 2015
✔ NPI 1558756262 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 50369
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedInternal Medicine · Addiction MedicineTaxonomy 207RA0401X · License 50369 (CA)
Also ListedClinical PharmacologyTaxonomy 208U00000X · License 50369 (CA)
1 AMGEN CENTER DR, Thousand Oaks, CA 91320
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Other Identifiers 1

Medicare UPINC89922MD

Other Providers at the Same Location NPPES 16

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

DR. LEANDRO GRIMALDI MD, MPH, EMBA
Specialist
1 AMGEN CENTER DR
THOUSAND OAKS, CA 91320
Ventura County (805) 447-1000
MICHAEL S VINCENT M.D., PH.D.
Internal Medicine (Rheumatology)
1 AMGEN CENTER DR
THOUSAND OAKS, CA 91320
Ventura County (805) 447-9481
DEBORAH PALASKI RNP
Nurse Practitioner (Family)
1 AMGEN CENTER DR, OCCUPATIONAL HEALTH, BLDG. 10
THOUSAND OAKS, CA 91320
Ventura County (805) 447-8899
DR. THEODORE E OKERSON II M.D.
Internal Medicine
1 AMGEN CENTER DR, MS 38/3B
THOUSAND OAKS, CA 91320
Ventura County (805) 447-9105
DR. JOSHUA JUDAH OFMAN M.D.
Specialist
1 AMGEN CENTER DR, MAILSTOP 27-2-C
THOUSAND OAKS, CA 91320
Ventura County (805) 447-0787
STEVEN KENNETH GALSON MD, MPH
Preventive Medicine (Public Health & General Preventive Medicine)
1 AMGEN CENTER DR
THOUSAND OAKS, CA 91320
Ventura County (805) 447-4988
DR. JEFFREY WIEZOREK
Internal Medicine (Medical Oncology)
1 AMGEN CENTER DR, MS 38-2-A
THOUSAND OAKS, CA 91320
Ventura County (805) 447-5707
NILOUFER CAINGLIT RN, NP
Nurse Practitioner
1 AMGEN CENTER DR
THOUSAND OAKS, CA 91320
Ventura County (805) 447-3584

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 John Sullivan's NPI number?

The NPI number for John Sullivan is 1558756262. It was assigned to this individual provider in the NPPES registry on March 30, 2015.

Where is John Sullivan located?

John Sullivan practices at 1 Amgen Center Dr 38-4-C, Thousand Oaks, CA 91320. The listed phone number is (805) 447-4429.

What is John Sullivan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for John Sullivan was last updated on March 30, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.