1. Home
  2. Directory
  3. California
  4. Orange
  5. Internal Medicine
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JACK STEWART MD INC
NPI 1891202529
Internal Medicine - Pulmonary Disease in Orange, CA

Active since January 03, 2018
1010 W LA VETA AVE STE 750, ORANGE, CA 92868(949) 973-7389(714) 919-8804 Get Directions Write a Review

NPPES record last updated: October 1, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Oct 1, 2026, Sep 18, 2026, Aug 25, 2026 and 1 more (4 updates tracked since 2026).

About Jack Stewart Md Inc NPPES

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

JACK STEWART MD INC (NPI 1891202529) is a healthcare organization registered as a pulmonary disease in Orange, California and active in the NPI registry since January 2018. The organization lists Jack O Stewart, President, as its authorized official.

NPPES Registry Identity

NPI1891202529
Entity TypeOrganization
Primary Taxonomy207RP1001X
Legal Business NameJACK STEWART MD INC
Location Address1010 W LA VETA AVE STE 750Orange, CA 92868-4312
Mailing Address417 S Associated Rd # 1005Brea, CA 92821-5802 · (949) 688-1172
Phone(949) 973-7389
Fax(714) 919-8804
Organization SubpartNo
Authorized OfficialJack O StewartPresident · (949) 688-1172
Enumeration DateJanuary 3, 2018
Last NPPES UpdateOctober 1, 20264 updates tracked since enumeration
NPPES CertifiedOctober 1, 2026
✔ NPI 1891202529 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
Definition
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
1010 W LA VETA AVE STE 750, Orange, CA 92868
Open in Google Maps ↗

Other Providers at the Same Location NPPES 19

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

DR. PETER ROY SMETHURST MD
Internal Medicine (Critical Care Medicine)
1010 W LA VETA AVE STE 750
ORANGE, CA 92868
Orange County (714) 639-9401
DR. KATAYUN SAADAI MD
Internal Medicine
1010 W LA VETA AVE STE 750
ORANGE, CA 92868
Orange County (714) 361-6600
DR. SHAHID JALIL HAYAT M.D.
Internal Medicine (Critical Care Medicine)
1010 W LA VETA AVE STE 750
ORANGE, CA 92868
Orange County (714) 361-6600
COMPREHENSIVE PULMONARY AND PRIMARY CARE OF ORANGE COUNTY
Internal Medicine
1010 W LA VETA AVE STE 750
ORANGE, CA 92868
Orange County (714) 361-6600
LISA MARIE EVANS NP
Nurse Practitioner (Acute Care)
1010 W LA VETA AVE STE 750
ORANGE, CA 92868
Orange County (714) 361-6600
JOSEPH C PRESTON M.D.
Internal Medicine (Critical Care Medicine)
1010 W LA VETA AVE STE 750
ORANGE, CA 92868
Orange County (714) 361-6600
JAMES HENRY ROUM MD
Internal Medicine (Critical Care Medicine)
1010 W LA VETA AVE STE 750
ORANGE, CA 92868
Orange County (714) 639-9401
TACKSON TAM M.D.
Internal Medicine
1010 W LA VETA AVE STE 750
ORANGE, CA 92868
Orange County (714) 361-6600

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 Jack Stewart MD Inc's NPI number?

The NPI number for Jack Stewart MD Inc is 1891202529. It was assigned to this organization in the NPPES registry on January 3, 2018.

Where is Jack Stewart MD Inc located?

Jack Stewart MD Inc is located at 1010 W La Veta Ave Ste 750, Orange, CA 92868. The listed phone number is (949) 973-7389.

What is Jack Stewart MD Inc's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

When was this NPI record last updated?

The NPPES record for Jack Stewart MD Inc was last updated on October 1, 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.