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COLORADO GASTROENTEROLOGY PROF LLC
NPI 1396790101
Internal Medicine - Gastroenterology in Denver, CO

Active since May 23, 2006
1960 N OGDEN ST STE 220, DENVER, CO 80218(303) 861-0808(303) 861-2193 Get Directions Write a Review

NPPES record last updated: April 21, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Colorado Gastroenterology Prof Llc NPPES

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

COLORADO GASTROENTEROLOGY PROF LLC (NPI 1396790101) is a healthcare organization registered as a gastroenterology in Denver, Colorado and active in the NPI registry since May 2006. The organization lists Kevin S Sieja, Managing Physician, as its authorized official.

NPPES Registry Identity

NPI1396790101
Entity TypeOrganization
Primary Taxonomy207RG0100X
Legal Business NameCOLORADO GASTROENTEROLOGY PROF LLC
Location Address1960 N OGDEN ST STE 220Denver, CO 80218-3668
Mailing Address1960 N Ogden St Ste 220Denver, CO 80218-3668 · (303) 861-0808 · Fax (303) 861-2193
Phone(303) 861-0808
Fax(303) 861-2193
Organization SubpartNo
Authorized OfficialKevin S SiejaManaging Physician · (303) 861-0808
Enumeration DateMay 23, 2006
Last NPPES UpdateApril 21, 2025
NPPES CertifiedApril 21, 2025
✔ NPI 1396790101 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.
1960 N OGDEN ST STE 220, Denver, CO 80218
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Other Identifiers 2

Medicaid9000152752CO
OtherDB9573CO · Railroad Medicare

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

Other Providers at the Same Location NPPES 2

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

KEVIN MICHAEL RUFNER MD, MPH
Internal Medicine (Gastroenterology)
1960 N OGDEN ST STE 220
DENVER, CO 80218
Denver County (303) 861-0808
GI ALLIANCE ANESTHESIA OF COLORADO
Nurse Anesthetist, Certified Registered
1960 N OGDEN ST STE 220
DENVER, CO 80218
Denver County (303) 214-9316

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 Colorado Gastroenterology Prof LLC's NPI number?

The NPI number for Colorado Gastroenterology Prof LLC is 1396790101. It was assigned to this organization in the NPPES registry on May 23, 2006.

Where is Colorado Gastroenterology Prof LLC located?

Colorado Gastroenterology Prof LLC is located at 1960 N Ogden St Ste 220, Denver, CO 80218. The listed phone number is (303) 861-0808.

What is Colorado Gastroenterology Prof LLC's specialty?

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

When was this NPI record last updated?

The NPPES record for Colorado Gastroenterology Prof LLC was last updated on April 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months 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.