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DR. JAMES LEO SEBASTIAN M.D
NPI 1942224282
Internal Medicine in Milwaukee, WI

Active since July 27, 2006
5000 W NATIONAL AVE, MILWAUKEE, WI 53295(414) 384-2000 Get Directions Write a Review

NPPES record last updated: November 5, 2021. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Dr. James Leo Sebastian M.d NPPES

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

DR. JAMES LEO SEBASTIAN M.D (NPI 1942224282) is an individual internal medicine provider in Milwaukee, Wisconsin, licensed in Wisconsin (23234) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1942224282
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. JAMES LEO SEBASTIANCredential: M.D
Location Address5000 W NATIONAL AVEMilwaukee, WI 53295-0001
Mailing Address1826 N 69th StWauwatosa, WI 53213-2316 · (414) 456-6793 · Fax (414) 456-6213
Phone(414) 384-2000
Sole ProprietorNo
Enumeration DateJuly 27, 2006
Last NPPES UpdateNovember 5, 2021
✔ NPI 1942224282 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in WI · 23234
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.
5000 W NATIONAL AVE, Milwaukee, WI 53295
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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.

DR. NATALIA SCHWARTZ PHARM.D, RPH
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
DR. ELENA V ROUKHADZE M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
DEPARTMENT OF VETERANS AFFAIRS CLEMENT J. ZABLOCKI MEDICAL CENTER
General Acute Care Hospital
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
MEAGAN LISKA MSW
Social Worker (Clinical)
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
MS. MICHELLE SEAVERS
Nurse Practitioner (Family)
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
JERALEE BRIGGS PH.D.
Psychologist
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
WILLIAM GRANT STOOKSBURY MD
Psychiatry & Neurology (Psychiatry)
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000
JURGITA GRONKOWSKI PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
5000 W NATIONAL AVE
MILWAUKEE, WI 53295
Milwaukee County (414) 384-2000

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 James Sebastian's NPI number?

The NPI number for James Sebastian is 1942224282. It was assigned to this individual provider in the NPPES registry on July 27, 2006.

Where is James Sebastian located?

James Sebastian practices at 5000 W National Ave, Milwaukee, WI 53295. The listed phone number is (414) 384-2000.

What is James Sebastian'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 James Sebastian was last updated on November 5, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.