JOHN J. O'BRIEN M.D.
NPI 1083689061
Family Medicine in O Fallon, MO

Q: What is John O'brien's NPI number?

The NPI number for John O'brien is 1083689061. It was assigned to this individual provider in the NPPES registry on February 22, 2006.

Q: What is John O'brien's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for John O'brien was last updated on February 24, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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 February 22, 2006

2630 HIGHWAY K, O FALLON, MO 63368(636) 240-5454(618) 980-5335 Get Directions Write a Review

NPPES record last updated: February 24, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Feb 24, 2021, Sep 2, 2020 (2 updates tracked since 2020).

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About John J. O'brien M.d. NPPES

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

JOHN J. O'BRIEN M.D. (NPI 1083689061) is an individual family medicine provider in O Fallon, Missouri, licensed in Missouri (R3E76) and active in the NPI registry since February 2006. He maintains a secondary practice location in O Fallon.

NPPES Registry Identity

NPI1083689061

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameJOHN J. O'BRIENCredential: M.D.

Location Address2630 HIGHWAY KO Fallon, MO 63368-6624

Mailing Address2630 Highway KO Fallon, MO 63368-6624 · (636) 240-5454

Phone(636) 240-5454

Fax(618) 980-5335

Sole ProprietorNo

Enumeration DateFebruary 22, 2006

Last NPPES UpdateFebruary 24, 20212 updates tracked since enumeration

NPPES CertifiedFebruary 24, 2021

✔ NPI 1083689061 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in MO · R3E76

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

2630 HIGHWAY K, O Fallon, MO 63368

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Secondary Practice Location 1

Location 19426 Phoenix Village PkwyO Fallon, MO 63368-4781 · Phone (636) 561-5999 · Fax (636) 561-4746

Other Identifiers 1

Other080171320MO · Railroad Medicare

Other Providers at the Same Location NPPES 11

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

AMANDA HEIDEMANN MD

Family Medicine