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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GASTROINTESTINAL ASSOCIATES, LLC
NPI 1912950585
Internal Medicine - Gastroenterology in Columbia, MO

Active since May 18, 2006CLIA 26D2272060 · Certificate of Compliance
210 PORTLAND ST STE 100, COLUMBIA, MO 65201(573) 777-8818(573) 777-8819 Get Directions Write a Review

NPPES record last updated: June 30, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 30, 2026, May 22, 2025 (2 updates tracked since 2025).

About Gastrointestinal Associates, Llc NPPES

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

GASTROINTESTINAL ASSOCIATES, LLC (NPI 1912950585), doing business as Gastrointestinal Associates, Llp, is a healthcare organization registered as a gastroenterology in Columbia, Missouri and active in the NPI registry since May 2006. The organization holds a CLIA Certificate of Compliance certificate valid through September 19, 2027 and lists James J Weber, Ceo/authorized Official, as its authorized official.

NPPES Registry Identity

NPI1912950585
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameGASTROINTESTINAL ASSOCIATES, LLC
Location Address210 PORTLAND ST STE 100Columbia, MO 65201-6677
Mailing Address210 Portland St Ste 100Columbia, MO 65201-6677 · (573) 777-8818 · Fax (573) 777-8819
Phone(573) 777-8818
Fax(573) 777-8819
Organization SubpartNo
Authorized OfficialJames J WeberCeo/authorized Official · (573) 777-8818
Enumeration DateMay 18, 2006
Last NPPES UpdateJune 30, 20262 updates tracked since enumeration
NPPES CertifiedJune 30, 2026
✔ NPI 1912950585 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
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.
210 PORTLAND ST STE 100, Columbia, MO 65201
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Other Names 1

Former Legal Business NameGastrointestinal Associates, Llp

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health, Ambetter from Sunflower Health Plan and more.Insurance ›

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Compliance 26D2272060

Gastrointestinal Associates LLC · Columbia, MO
Active · expires Sep 19, 2027
CLIA Number26D2272060
Laboratory TypePhysician Office
Certificate Effective DateSeptember 20, 2025
Certificate Expiration DateSeptember 19, 2027
Laboratory DirectorTiansheng Shen
Laboratory Phone(573) 777-8818
Laboratory LocationGastrointestinal Associates LLC210 Portland St, Suite 100, Columbia, MO 65201
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

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.

ALLYSON J IHMS CRNA
Nurse Anesthetist, Certified Registered
210 PORTLAND ST STE 100
COLUMBIA, MO 65201
Boone County (573) 777-8818
DR. STEPHEN W. WELSH MD
Internal Medicine (Gastroenterology)
210 PORTLAND ST STE 100
COLUMBIA, MO 65201
Boone County (573) 777-8818
RACHEL ANN EVANS CRNA
Nurse Anesthetist, Certified Registered
210 PORTLAND ST STE 100
COLUMBIA, MO 65201
Boone County (573) 777-8818
CASEY NICOLE BECKLEY CRNA
Nurse Anesthetist, Certified Registered
210 PORTLAND ST STE 100
COLUMBIA, MO 65201
Boone County (573) 777-8818
KEVIN J LOCKETT CRNA
Nurse Anesthetist, Certified Registered
210 PORTLAND ST STE 100
COLUMBIA, MO 65201
Boone County (573) 777-8818
KRISTINA MARIE REED CRNA
Nurse Anesthetist, Certified Registered
210 PORTLAND ST STE 100
COLUMBIA, MO 65201
Boone County (573) 777-8818
JEREMIAH HAYS FNP-C
Nurse Practitioner (Family)
210 PORTLAND ST STE 100
COLUMBIA, MO 65201
Boone County (573) 777-8818
REBECCA LLORENS MD
Internal Medicine
210 PORTLAND ST STE 100
COLUMBIA, MO 65201
Boone County (573) 777-8818

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 Gastrointestinal Associates, LLC's NPI number?

The NPI number for Gastrointestinal Associates, LLC is 1912950585. It was assigned to this organization in the NPPES registry on May 18, 2006. The provider was formerly known as Gastrointestinal Associates, LLP.

Where is Gastrointestinal Associates, LLC located?

Gastrointestinal Associates, LLC is located at 210 Portland St Ste 100, Columbia, MO 65201. The listed phone number is (573) 777-8818.

What is Gastrointestinal Associates, LLC's specialty?

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

Does Gastrointestinal Associates, LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 26D2272060) is associated with this NPI, valid through September 19, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Gastrointestinal Associates, LLC accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Home State Health and Ambetter from Sunflower Health Plan and 5 other insurers list Gastrointestinal Associates, LLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Gastrointestinal Associates, LLC was last updated on June 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 46 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.